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key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | why do n't the electrons in the atoms like that of calcium , sodium and others , emit some photons of energy and jump into the first shell ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | any shell , including the first shell , is large enough , in terms of space , to accommodate the small volumes of a large number of electrons , is n't it ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | what if the electronic structure of the atom was quantized ? bohr suggested that perhaps the electrons could only orbit the nucleus in specific orbits or shells with a fixed radius . only shells with a radius given by the equation below would be allowed , and the electron could not exist in between these shells . | so why do the shells have a maximum of 2n^2 electrons ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | mathematically , we could write the allowed values of the atomic radius as $ r ( n ) =n^2\cdot r ( 1 ) $ , where $ n $ is a positive integer , and $ r ( 1 ) $ is the bohr radius , the smallest allowed radius for hydrogen . he found that $ r ( 1 ) $ has the value $ \text { bohr radius } =r ( 1 ) =0.529 \times 10^ { -10 ... | the lowest energy of electron in the ground state of an hydrogen atom is -13.6ev , what is ev here ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | \ \dfrac { \text c } { \lambda } & amp ; =\nu=\left ( \dfrac { 1 } { { n_ { low } } ^2 } -\dfrac { 1 } { { n_ { high } } ^2 } \right ) \cdot \dfrac { 13.6\ , \text { ev } } { h } ~~~~~~~~~~~~~~\text { divide both sides by c to solve for } \dfrac { 1 } { \lambda } .\ \ \dfrac { 1 } { \lambda } & amp ; =\left ( \dfrac { ... | how did bohr explain the stability of an electron ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | absorption and emission bohr could now precisely describe the processes of absorption and emission in terms of electronic structure . according to bohr 's model , an electron would absorb energy in the form of photons to get excited to a higher energy level as long as the photon 's energy was equal to the energy differ... | it says that an electron having energy will be more stable than an electron having no energy ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | when an electron drops from a higher shell to a lower shell , is exactly 1 photon emitted ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | what have we learned since bohr proposed his model of hydrogen ? the bohr model worked beautifully for explaining the hydrogen atom and other single electron systems such as $ \text { he } ^+ $ . unfortunately , it did not do as well when applied to the spectra of more complex atoms . | what happens to the hydrogen atom once its electron has been ionized ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | as a consequence , the emitted electromagnetic radiation must have energies that are multiples of $ h\nu $ . einstein used planck 's results to explain why a minimum frequency of light was required to eject electrons from a metal surface in the photoelectric effect . when something is quantized , it means that only spe... | what is the significance of photoelectric effect ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | only shells with a radius given by the equation below would be allowed , and the electron could not exist in between these shells . mathematically , we could write the allowed values of the atomic radius as $ r ( n ) =n^2\cdot r ( 1 ) $ , where $ n $ is a positive integer , and $ r ( 1 ) $ is the bohr radius , the smal... | why none of the spectral lines are created from moving an electron from n > 1 to n=1 ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | this is because the energy of an electron in orbit is relative to the energy of an electron that has been completely separated from its nucleus , $ n=\infty $ , which is defined to have an energy of $ 0\ , \text { ev } $ . since an electron in orbit around the nucleus is more stable than an electron that is infinitely ... | is this same as how electromagnetic wave emitter works by oscillating the electron ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | absorption and emission bohr could now precisely describe the processes of absorption and emission in terms of electronic structure . according to bohr 's model , an electron would absorb energy in the form of photons to get excited to a higher energy level as long as the photon 's energy was equal to the energy differ... | if an electron has infinite energy , why ca n't it stay in any orbit and even if it loses energy can still have infite energy right ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | absorption and emission bohr could now precisely describe the processes of absorption and emission in terms of electronic structure . according to bohr 's model , an electron would absorb energy in the form of photons to get excited to a higher energy level as long as the photon 's energy was equal to the energy differ... | what if the an electron in the first shell lose energy ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | \ \dfrac { \text c } { \lambda } & amp ; =\nu=\left ( \dfrac { 1 } { { n_ { low } } ^2 } -\dfrac { 1 } { { n_ { high } } ^2 } \right ) \cdot \dfrac { 13.6\ , \text { ev } } { h } ~~~~~~~~~~~~~~\text { divide both sides by c to solve for } \dfrac { 1 } { \lambda } .\ \ \dfrac { 1 } { \lambda } & amp ; =\left ( \dfrac { ... | what is the effect of hydrogen isotops on its spectrum ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | absorption and emission bohr could now precisely describe the processes of absorption and emission in terms of electronic structure . according to bohr 's model , an electron would absorb energy in the form of photons to get excited to a higher energy level as long as the photon 's energy was equal to the energy differ... | is the transmission of energy same when an electron move to a higher level and back to the same level ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | the energy levels and transitions between them can be illustrated using an energy level diagram , such as the example above showing electrons relaxing back to the $ n=2 $ level of hydrogen . the energy of the emitted photon is equal to the difference in energy between the two energy levels for a particular transition .... | what is the difference between the energy absorbed and the energy emitted in these two actions ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | in the following decades , work by scientists such as erwin schrödinger showed that electrons can be thought of as behaving like waves and behaving as particles . this means that it is not possible to know both a given electron ’ s position in space and its velocity at the same time , a concept that is more precisely s... | what is heisenberg uncertainty principle , what does it state ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | however , scientists still had many unanswered questions : $ $ where are the electrons , and what are they doing ? if the electrons are orbiting the nucleus , why don ’ t they fall into the nucleus as predicted by classical physics ? how is the internal structure of the atom related to the discrete emission lines produ... | why dont electrons fall into the nucleus when shifting energy levels ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | prior to bohr 's model of the hydrogen atom , scientists were unclear of the reason behind the quantization of atomic emission spectra . bohr 's model of the hydrogen atom : quantization of electronic structure bohr ’ s model of the hydrogen atom started from the planetary model , but he added one assumption regarding ... | was the hydrogen atom used to determine how many energy levels were present in any given atom ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | this means that it is not possible to know both a given electron ’ s position in space and its velocity at the same time , a concept that is more precisely stated in heisenberg 's uncertainty principle . the uncertainty principle contradicts bohr ’ s idea of electrons existing in specific orbits with a known velocity a... | what does principle quatum number mean ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | bohr supported the planetary model , in which electrons revolved around a positively charged nucleus like the rings around saturn—or alternatively , the planets around the sun . however , scientists still had many unanswered questions : $ $ where are the electrons , and what are they doing ? if the electrons are orbiti... | in 'the beginning ' which came first electrons or photons ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | prior to bohr 's model of the hydrogen atom , scientists were unclear of the reason behind the quantization of atomic emission spectra . bohr 's model of the hydrogen atom : quantization of electronic structure bohr ’ s model of the hydrogen atom started from the planetary model , but he added one assumption regarding ... | under the subtitle `` bohr 's model of the hydrogen atom : quantization of electronic structure '' in the 2nd paragraph , i still do not understand why the energy is always going to be a negative number -i do n't have facebook , can you answer this question ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | after jumping to the higher energy level—also called the excited state—the excited electron would be in a less stable position , so it would quickly emit a photon to relax back to a lower , more stable energy level . the energy levels and transitions between them can be illustrated using an energy level diagram , such ... | is n for energy level same as the nth orbit ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | according to bohr 's model , an electron would absorb energy in the form of photons to get excited to a higher energy level as long as the photon 's energy was equal to the energy difference between the initial and final energy levels . after jumping to the higher energy level—also called the excited state—the excited ... | if the new state is less stable and wo n't stay for long , why does it even make the transition in the first place ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | for the relatively simple case of the hydrogen atom , the wavelengths of some emission lines could even be fitted to mathematical equations . the equations did not explain why the hydrogen atom emitted those particular wavelengths of light , however . prior to bohr 's model of the hydrogen atom , scientists were unclea... | can those equations be explained in a simpler way if possible ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | he found that $ r ( 1 ) $ has the value $ \text { bohr radius } =r ( 1 ) =0.529 \times 10^ { -10 } \ , \text { m } $ by keeping the electrons in circular , quantized orbits around the positively-charged nucleus , bohr was able to calculate the energy of an electron in the $ n $ th energy level of hydrogen : $ e ( n ) =... | what is the value of rydberg constant ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | prior to bohr 's model of the hydrogen atom , scientists were unclear of the reason behind the quantization of atomic emission spectra . bohr 's model of the hydrogen atom : quantization of electronic structure bohr ’ s model of the hydrogen atom started from the planetary model , but he added one assumption regarding ... | how many colours does the atom emits ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | since an electron in orbit around the nucleus is more stable than an electron that is infinitely far away from its nucleus , the energy of an electron in orbit is always negative . absorption and emission bohr could now precisely describe the processes of absorption and emission in terms of electronic structure . accor... | how is the emission spectrum of the sun found ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | absorption and emission bohr could now precisely describe the processes of absorption and emission in terms of electronic structure . according to bohr 's model , an electron would absorb energy in the form of photons to get excited to a higher energy level as long as the photon 's energy was equal to the energy differ... | if we take a sample of sodium and heat on bunsen burner then will its electrons absorb energy in values of photons ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | he found that $ r ( 1 ) $ has the value $ \text { bohr radius } =r ( 1 ) =0.529 \times 10^ { -10 } \ , \text { m } $ by keeping the electrons in circular , quantized orbits around the positively-charged nucleus , bohr was able to calculate the energy of an electron in the $ n $ th energy level of hydrogen : $ e ( n ) =... | what is the difference between orbital/ subshell and ground state/ excited state ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | \ \dfrac { \text c } { \lambda } & amp ; =\nu=\left ( \dfrac { 1 } { { n_ { low } } ^2 } -\dfrac { 1 } { { n_ { high } } ^2 } \right ) \cdot \dfrac { 13.6\ , \text { ev } } { h } ~~~~~~~~~~~~~~\text { divide both sides by c to solve for } \dfrac { 1 } { \lambda } .\ \ \dfrac { 1 } { \lambda } & amp ; =\left ( \dfrac { ... | how does bohr theory explain there are only 4 visible emission lines for hydrogen ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | absorption and emission bohr could now precisely describe the processes of absorption and emission in terms of electronic structure . according to bohr 's model , an electron would absorb energy in the form of photons to get excited to a higher energy level as long as the photon 's energy was equal to the energy differ... | would dropping from the farther orbitals emit less energy than dropping nearer to the nucleus ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | for the relatively simple case of the hydrogen atom , the wavelengths of some emission lines could even be fitted to mathematical equations . the equations did not explain why the hydrogen atom emitted those particular wavelengths of light , however . prior to bohr 's model of the hydrogen atom , scientists were unclea... | why ca n't you explain the exact location of an electron in an atom ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | prior to bohr 's model of the hydrogen atom , scientists were unclear of the reason behind the quantization of atomic emission spectra . bohr 's model of the hydrogen atom : quantization of electronic structure bohr ’ s model of the hydrogen atom started from the planetary model , but he added one assumption regarding ... | what is bhor 's model of atom ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | the energy difference between energy levels $ n_ { high } $ and $ n_ { low } $ can be calculated using the equation for $ e ( n ) $ from the previous section : $ \begin { align } \delta e & amp ; = e ( n_ { high } ) -e ( n_ { low } ) \ \ & amp ; =\left ( -\dfrac { 1 } { { n_ { high } } ^2 } \cdot 13.6\ , \text { ev } \... | in my equation for lab , i have 1.912s = ( 3.288 x 10^-15 ) ( 1/4 - 1/n2^2 ) ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | as a consequence , the emitted electromagnetic radiation must have energies that are multiples of $ h\nu $ . einstein used planck 's results to explain why a minimum frequency of light was required to eject electrons from a metal surface in the photoelectric effect . when something is quantized , it means that only spe... | how did bohr explain atomic structure with respect to planck 's quantum theory and einstein 's photoelectric effect ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | however , scientists still had many unanswered questions : $ $ where are the electrons , and what are they doing ? if the electrons are orbiting the nucleus , why don ’ t they fall into the nucleus as predicted by classical physics ? how is the internal structure of the atom related to the discrete emission lines produ... | how does an electron not follow classical physics but follow quantum physics ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | \ \dfrac { \text c } { \lambda } & amp ; =\nu=\left ( \dfrac { 1 } { { n_ { low } } ^2 } -\dfrac { 1 } { { n_ { high } } ^2 } \right ) \cdot \dfrac { 13.6\ , \text { ev } } { h } ~~~~~~~~~~~~~~\text { divide both sides by c to solve for } \dfrac { 1 } { \lambda } .\ \ \dfrac { 1 } { \lambda } & amp ; =\left ( \dfrac { ... | when did bohr found the theory ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | mathematically , we could write the allowed values of the atomic radius as $ r ( n ) =n^2\cdot r ( 1 ) $ , where $ n $ is a positive integer , and $ r ( 1 ) $ is the bohr radius , the smallest allowed radius for hydrogen . he found that $ r ( 1 ) $ has the value $ \text { bohr radius } =r ( 1 ) =0.529 \times 10^ { -10 ... | what are the 10 lowest energy states of hydrogen ( n=10 to n=1 ) ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | the energy levels and transitions between them can be illustrated using an energy level diagram , such as the example above showing electrons relaxing back to the $ n=2 $ level of hydrogen . the energy of the emitted photon is equal to the difference in energy between the two energy levels for a particular transition .... | when solving for the frequency of the photon emitted from the hydrogen , why is n't it nhv = change in energy instead of hv = change of energy ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | he found that $ r ( 1 ) $ has the value $ \text { bohr radius } =r ( 1 ) =0.529 \times 10^ { -10 } \ , \text { m } $ by keeping the electrons in circular , quantized orbits around the positively-charged nucleus , bohr was able to calculate the energy of an electron in the $ n $ th energy level of hydrogen : $ e ( n ) =... | how does being stable provide a lesser ( more negative ) magnitude of energy ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | the energy of the emitted photon is equal to the difference in energy between the two energy levels for a particular transition . the energy difference between energy levels $ n_ { high } $ and $ n_ { low } $ can be calculated using the equation for $ e ( n ) $ from the previous section : $ \begin { align } \delta e & ... | why is the wavelength released larger for the drop from 3 to 2 compared with a drop from something like 5 to 2 or 4 to 2 ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the hydrogen spectrum in terms of electrons absorbing and emitting photons to change energy levels , where the photon energy is $ h\nu =\delta e = \left ( \... | what is a quantum mechanic ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | why `` non classical '' assumption ? |
a luncheon with fur the story behind the creation of object , an ordinary cup , spoon , and saucer wrapped evocatively in gazelle fur , has been told so many times its importance in modernist history transcends the fact it might be apocryphal ( of dubious authenticity ) . the twenty-two year old basel-born artist , mer... | this amusing story belies the importance of object and the critical acclaim and public fascination that has elevated it to point where it has become the definitive surrealist object ... ultimately to oppenheim ’ s dismay . what is a surrealist object ? oppenheim ’ s object was created at a moment when sculpted objects ... | how would this 'object ' have been made ? |
a luncheon with fur the story behind the creation of object , an ordinary cup , spoon , and saucer wrapped evocatively in gazelle fur , has been told so many times its importance in modernist history transcends the fact it might be apocryphal ( of dubious authenticity ) . the twenty-two year old basel-born artist , mer... | a luncheon with fur the story behind the creation of object , an ordinary cup , spoon , and saucer wrapped evocatively in gazelle fur , has been told so many times its importance in modernist history transcends the fact it might be apocryphal ( of dubious authenticity ) . the twenty-two year old basel-born artist , mer... | would the fur have been simply glued to the surface of the spoon and the ceramics ? |
a luncheon with fur the story behind the creation of object , an ordinary cup , spoon , and saucer wrapped evocatively in gazelle fur , has been told so many times its importance in modernist history transcends the fact it might be apocryphal ( of dubious authenticity ) . the twenty-two year old basel-born artist , mer... | the frisson we experience when china is unexpectedly wrapped in fur is based on our familiarity with both , and the fur requires us to extend our sensory experiences to fully appreciate the work . object insists we imagine what sipping warm tea from this cup feels like , how the bristles would feel upon our lips . with... | why would your kitchen utensils need fursuits ? |
a luncheon with fur the story behind the creation of object , an ordinary cup , spoon , and saucer wrapped evocatively in gazelle fur , has been told so many times its importance in modernist history transcends the fact it might be apocryphal ( of dubious authenticity ) . the twenty-two year old basel-born artist , mer... | however , while oppenheim preferred a non-descriptive title , breton took the liberty of titling the piece le déjeneur en fourrure , or luncheon in fur . this title is a play on two nineteenth-century works : édouard manet ’ s infamous modernist painting luncheon on the grass ( le déjeneur sur l ’ herbe ) and leopold v... | why is is that people assume the artwork has erotic suggestions ? |
what is the buoyant force ? imagine you ’ re hanging out with your friends on a friday night , when your good friend jacques texts you and asks you to join him on a trip to the bottom of the ocean . jacques has a brand new submarine that he ’ s been itching to try out , and he wants you to come with him to check out so... | because the volume is the same at any depth , and the density of water is the same at any depth , the total mass of displaced water ( mass = volume x density ) is the same at any depth—making the buoyant force constant . consider the following… the bends the amount of dissolved gases in your bloodstream is related to t... | but would n't the amount of gas dissolved in the blood increase as the diver went deeper and the pressure increased ? |
what is the buoyant force ? imagine you ’ re hanging out with your friends on a friday night , when your good friend jacques texts you and asks you to join him on a trip to the bottom of the ocean . jacques has a brand new submarine that he ’ s been itching to try out , and he wants you to come with him to check out so... | what is the buoyant force ? imagine you ’ re hanging out with your friends on a friday night , when your good friend jacques texts you and asks you to join him on a trip to the bottom of the ocean . | `` the buoyant force does not get smaller as you sink '' does that mean if i was originally more dense then water , that i would fall at constant velocity ( even with drag ) until i hit sea floor ? |
what is the buoyant force ? imagine you ’ re hanging out with your friends on a friday night , when your good friend jacques texts you and asks you to join him on a trip to the bottom of the ocean . jacques has a brand new submarine that he ’ s been itching to try out , and he wants you to come with him to check out so... | at the top of mount everest the pressure is closer to 33 kpa . the decrease in pressure occurs simply because as you go higher there is less air above you pushing down on you . under water is a different situation . | do manufacturers of compressed air tanks for scuba diving intentionally decrease the partial pressure of nitrogen in their tanks to reduce the risk of getting the bends ? |
what is the buoyant force ? imagine you ’ re hanging out with your friends on a friday night , when your good friend jacques texts you and asks you to join him on a trip to the bottom of the ocean . jacques has a brand new submarine that he ’ s been itching to try out , and he wants you to come with him to check out so... | what is the buoyant force ? imagine you ’ re hanging out with your friends on a friday night , when your good friend jacques texts you and asks you to join him on a trip to the bottom of the ocean . | does the buoyant force remain the same ? |
what is the buoyant force ? imagine you ’ re hanging out with your friends on a friday night , when your good friend jacques texts you and asks you to join him on a trip to the bottom of the ocean . jacques has a brand new submarine that he ’ s been itching to try out , and he wants you to come with him to check out so... | if , at the end of a dive , you attempt to re-surface very quickly , this dissolved nitrogen will suddenly exit your bloodstream in the form of tiny bubbles that can disrupt or damage your blood vessels . this condition is known as decompression sickness or the bends , and it constitutes a life-threatening risk in deep... | for example , do free divers have to slowly rise back up when they come from let 's say , a 50-100 m dive ? |
what is the buoyant force ? imagine you ’ re hanging out with your friends on a friday night , when your good friend jacques texts you and asks you to join him on a trip to the bottom of the ocean . jacques has a brand new submarine that he ’ s been itching to try out , and he wants you to come with him to check out so... | what is the buoyant force ? imagine you ’ re hanging out with your friends on a friday night , when your good friend jacques texts you and asks you to join him on a trip to the bottom of the ocean . | assuming there was a strong enough gravity to pull you to the left , would the buoyant force push you to the right ? |
key points the budget constraint is the boundary of the opportunity set—all possible combinations of consumption that someone can afford given the prices of goods and the individual ’ s income . opportunity cost measures cost in terms of what must be given up in exchange . marginal analysis is the process of comparing ... | self-check question suppose alphonso ’ s town raised the price of bus tickets to \ $ 1 per trip , the price of burgers stayed at \ $ 2 , and alphonso 's budget remained \ $ 10 per week . draw alphonso ’ s new budget constraint . what happens to the opportunity cost of bus tickets ? | is n't the slope of the new budget constraint steeper than the original one ? |
key points the budget constraint is the boundary of the opportunity set—all possible combinations of consumption that someone can afford given the prices of goods and the individual ’ s income . opportunity cost measures cost in terms of what must be given up in exchange . marginal analysis is the process of comparing ... | that is , he will choose some combination on the budget constraint that connects points a and f. every point on or inside the constraint shows a combination of burgers and bus tickets that alphonso can afford . any point outside the constraint is not affordable because it would cost more money than alphonso has in his ... | or would investments be part of the budget line ? |
in rebellious silence , the central figure ’ s portrait is bisected along a vertical seam created by the long barrel of a rifle . presumably the rifle is clasped in her hands near her lap , but the image is cropped so that the gun rises perpendicular to the lower edge of the photo and grazes her face at the lips , nose... | in women of allah , initiated shortly after her return to iran in 1991 , the veil functions as both a symbol of freedom and of repression . the veil and the gaze the veil is intended to protect women ’ s bodies from becoming the sexualized object of the male gaze , but it also protects women from being seen at all . th... | how were ( or are ) women 's bodies violated with cameras ? |
in rebellious silence , the central figure ’ s portrait is bisected along a vertical seam created by the long barrel of a rifle . presumably the rifle is clasped in her hands near her lap , but the image is cropped so that the gun rises perpendicular to the lower edge of the photo and grazes her face at the lips , nose... | the gaze , here , might also reflect exotic fantasies of the east . in orientalist painting of the eighteenth and nineteenth centuries , for instance , eastern women are often depicted nude , surrounded by richly colored and patterned textiles and decorations ; women are envisaged amongst other beautiful objects that c... | did early users of cameras and/or imperialist colonizers , such as the british , u.s. , french , or even dutch or other westerners , or even imperial japan , force women in their colonies to be photographed nude ? |
in rebellious silence , the central figure ’ s portrait is bisected along a vertical seam created by the long barrel of a rifle . presumably the rifle is clasped in her hands near her lap , but the image is cropped so that the gun rises perpendicular to the lower edge of the photo and grazes her face at the lips , nose... | in rebellious silence , the central figure ’ s portrait is bisected along a vertical seam created by the long barrel of a rifle . presumably the rifle is clasped in her hands near her lap , but the image is cropped so that the gun rises perpendicular to the lower edge of the photo and grazes her face at the lips , nose... | what is the meaning behind the rifle in the rebellious silence ? |
intimate and lively tlatilco figurines are wonderful small ceramic figures , often of women , found in central mexico . this is the region of the later and much better-known aztec empire , but the people of tlatilco flourished 2,000-3,000 years before the aztec came to power in this valley . although tlatilco was alrea... | the makers of tlatilco figurines lived in a large farming village near the great inland lake in the center of the basin of mexico . modern mexico city sits on top of the remains of the village , making archaeological work difficult . we don ’ t know what the village would have looked beyond the basic shape of the commo... | i wonder if the figurine at the top could be of a pair of actual olmec conjoined diprosopus twins ? |
intimate and lively tlatilco figurines are wonderful small ceramic figures , often of women , found in central mexico . this is the region of the later and much better-known aztec empire , but the people of tlatilco flourished 2,000-3,000 years before the aztec came to power in this valley . although tlatilco was alrea... | intimate and lively tlatilco figurines are wonderful small ceramic figures , often of women , found in central mexico . this is the region of the later and much better-known aztec empire , but the people of tlatilco flourished 2,000-3,000 years before the aztec came to power in this valley . | in your opinion , why would be important for this community to replicate daily day actions in ceramic ? |
overview proponents of the new south envisioned a post-reconstruction southern economy modeled on the north ’ s embrace of the industrial revolution . henry w. grady , a newspaper editor in atlanta , georgia , coined the phrase the `` new south ” in 1874 . he urged the south to abandon its longstanding agrarian economy... | beginning in the early 1880s , northern capitalists invested in building textile mills in the southern appalachian foothills of north carolina , south carolina , and georgia , drawn to the region by the fact that they could pay southern mill workers at half the rate of workers in northern mills . in consequence of the ... | were n't many of these new industries built upon labor supplied by convict lease ? |
overview proponents of the new south envisioned a post-reconstruction southern economy modeled on the north ’ s embrace of the industrial revolution . henry w. grady , a newspaper editor in atlanta , georgia , coined the phrase the `` new south ” in 1874 . he urged the south to abandon its longstanding agrarian economy... | this system left both black and white tenant farmers living in dire poverty . in addition , since no one had any money to spend , the southern economy stagnated. $ ^1 $ an economic vision for a new south enter henry w. grady , editor of the atlanta constitution , a newspaper in georgia ’ s capital city . in a series of... | further depressing the real social-economic benefits of southern industrialization ? |
overview proponents of the new south envisioned a post-reconstruction southern economy modeled on the north ’ s embrace of the industrial revolution . henry w. grady , a newspaper editor in atlanta , georgia , coined the phrase the `` new south ” in 1874 . he urged the south to abandon its longstanding agrarian economy... | those who worked the fields shared a portion of the crop yield with the landlord as payment for renting the land . under the sharecropping system , the landlord typically supplied the capital to buy the seed and equipment needed to sow , cultivate , and harvest a crop , while the sharecropper supplied the labor . in ot... | why do the farmers ( sharecroppers ) have loans given that `` under the sharecropping system , the landlord typically supplied the capital to buy the seed and equipment needed to sow , cultivate , and harvest a crop '' ? |
what is diabetes mellitus ? diabetes mellitus is a common disease where there is too much sugar ( glucose ) floating around in your blood . this occurs because either the pancreas can ’ t produce enough insulin or the cells in your body have become resistant to insulin . how does your body normally regulate glucose ? w... | eventually the body destroys all of these cells and the symptoms of diabetes manifest . type 2 dm : people with type 2 diabetes can still make insulin , but their cells have some degree of insulin resistance . type 2 diabetes is a continuum which begins with insulin resistance and can end in loss of insulin secretion . | what properties of such foods make it so ? |
what is diabetes mellitus ? diabetes mellitus is a common disease where there is too much sugar ( glucose ) floating around in your blood . this occurs because either the pancreas can ’ t produce enough insulin or the cells in your body have become resistant to insulin . how does your body normally regulate glucose ? w... | these patients likely have nerve damage to other parts of their body , including their heart . the atypical symptoms lead to a delay in diagnosis of heart attacks . | in the final paragraph what does atypical mean ? |
what is diabetes mellitus ? diabetes mellitus is a common disease where there is too much sugar ( glucose ) floating around in your blood . this occurs because either the pancreas can ’ t produce enough insulin or the cells in your body have become resistant to insulin . how does your body normally regulate glucose ? w... | diabetes mellitus is a common disease where there is too much sugar ( glucose ) floating around in your blood . this occurs because either the pancreas can ’ t produce enough insulin or the cells in your body have become resistant to insulin . how does your body normally regulate glucose ? | if it does develop over time does the pancreas just stop producing insulin ? |
what is diabetes mellitus ? diabetes mellitus is a common disease where there is too much sugar ( glucose ) floating around in your blood . this occurs because either the pancreas can ’ t produce enough insulin or the cells in your body have become resistant to insulin . how does your body normally regulate glucose ? w... | what is diabetes mellitus ? diabetes mellitus is a common disease where there is too much sugar ( glucose ) floating around in your blood . | are there any follow up articles about the benefits of eating a ketogenic way of eating , safely of course , to combat diabetes ? |
what is diabetes mellitus ? diabetes mellitus is a common disease where there is too much sugar ( glucose ) floating around in your blood . this occurs because either the pancreas can ’ t produce enough insulin or the cells in your body have become resistant to insulin . how does your body normally regulate glucose ? w... | what is diabetes mellitus ? diabetes mellitus is a common disease where there is too much sugar ( glucose ) floating around in your blood . | can people die from diabetes ? |
what is diabetes mellitus ? diabetes mellitus is a common disease where there is too much sugar ( glucose ) floating around in your blood . this occurs because either the pancreas can ’ t produce enough insulin or the cells in your body have become resistant to insulin . how does your body normally regulate glucose ? w... | as type 2 diabetes continues to progress , patients have to start taking insulin to ensure they have enough of the molecule in their body . what are the symptoms of diabetes mellitus ? initial symptoms : type 1 : the classic initial presentation of type 1 diabetes is increased thirst , increased urination , weight loss... | how can you help when you know that someone maybe in your family or a friend who has diabetes and they get those symptoms that you have shown in this article ? |
what is diabetes mellitus ? diabetes mellitus is a common disease where there is too much sugar ( glucose ) floating around in your blood . this occurs because either the pancreas can ’ t produce enough insulin or the cells in your body have become resistant to insulin . how does your body normally regulate glucose ? w... | the main difference between type 1 and type 2 diabetes mellitus is the underlying mechanisms that cause your blood sugar to stray from the normal range . type 1 dm : type 1 diabetics suffer from a complete lack of insulin in their bodies . although the exact cause has not been identified , it is clear that the cells wh... | if a type 1 diabetic has ketoacids can it be treated with a high dose of insulin ? |
what is diabetes mellitus ? diabetes mellitus is a common disease where there is too much sugar ( glucose ) floating around in your blood . this occurs because either the pancreas can ’ t produce enough insulin or the cells in your body have become resistant to insulin . how does your body normally regulate glucose ? w... | if this happens in the brain or the heart , it causes a stroke or a heart attack . high blood glucose levels may also damage the smallest vessels in the body , leading to multiple long-term microvascular complications . this damage both destroys the cells in the blood vessels and leads to decreased blood flow and tissu... | what is the difference between atherosclerosis caused by dm and high cholesterol concentration in the body ? |
what is diabetes mellitus ? diabetes mellitus is a common disease where there is too much sugar ( glucose ) floating around in your blood . this occurs because either the pancreas can ’ t produce enough insulin or the cells in your body have become resistant to insulin . how does your body normally regulate glucose ? w... | this damage both destroys the cells in the blood vessels and leads to decreased blood flow and tissue death . poorly controlled diabetes can cause retinopathy ( damage to the retina in the eyes , leading to blindness ) , nephropathy ( damage to the kidneys resulting in kidney failure ) , neuropathy ( damage to your ner... | in paragraph nine , talking about diabetes causing kidney damage , is the damage caused by large amounts of glucose going through the nephrons and stretching or harming them ? |
what is diabetes mellitus ? diabetes mellitus is a common disease where there is too much sugar ( glucose ) floating around in your blood . this occurs because either the pancreas can ’ t produce enough insulin or the cells in your body have become resistant to insulin . how does your body normally regulate glucose ? w... | as insulin works on your body , the amount of glucose in the blood slowly returns to the same level it was before you ate.. this glucose level when you haven ’ t eaten recently ( called fasting glucose ) sits around 3.5-6 mmol/l ( 70-110 mg/dl ) . just after a meal , your blood glucose can jump as high as 7.8mmol/l ( 1... | can glucose completely block up kidneys ? |
the wall paintings from nebamun 's tomb-chapel show an idealized vision of daily ancient egyptian life . much less is known about the lives of the majority of society . the study of human remains in poor cemeteries is often the only way of learning about the short lives of most ancient egyptians . many of the objects b... | the body was then smoothed , the eyes and fins added and the core scraped out . wooden toy cat cats may have been kept as pets as early as the fourth millennium b.c.e . two wild species of cat lived in egypt , the jungle cat and the african wild cat . | did the ancient egyptians domesticate dogs to keep as pets as well or just cats ? |
the wall paintings from nebamun 's tomb-chapel show an idealized vision of daily ancient egyptian life . much less is known about the lives of the majority of society . the study of human remains in poor cemeteries is often the only way of learning about the short lives of most ancient egyptians . many of the objects b... | by the late first millennium b.c.e . cats were bred on an industrial scale for use in the cult of the cat goddess bastet . from the twelfth dynasty , cats are shown in tomb decoration , seated beneath the chair of the deceased or accompanying him on a hunt in the marshes . | what on earth were they doing with those cats that they needed to be bred 'on an indurstrial scale ' ? |
the wall paintings from nebamun 's tomb-chapel show an idealized vision of daily ancient egyptian life . much less is known about the lives of the majority of society . the study of human remains in poor cemeteries is often the only way of learning about the short lives of most ancient egyptians . many of the objects b... | the wall paintings from nebamun 's tomb-chapel show an idealized vision of daily ancient egyptian life . much less is known about the lives of the majority of society . | are re and ra the same deity ? |
the wall paintings from nebamun 's tomb-chapel show an idealized vision of daily ancient egyptian life . much less is known about the lives of the majority of society . the study of human remains in poor cemeteries is often the only way of learning about the short lives of most ancient egyptians . many of the objects b... | the cat had a similar role on the divine plane . in the funerary text called the litany of re , the sun god appears as a cat and battles the snake apep . this serpent , a manifestation of the forces of chaos , attacked the solar boat as it passed through the night sky . | what is the `` snake apep `` ? |
the wall paintings from nebamun 's tomb-chapel show an idealized vision of daily ancient egyptian life . much less is known about the lives of the majority of society . the study of human remains in poor cemeteries is often the only way of learning about the short lives of most ancient egyptians . many of the objects b... | the wall paintings from nebamun 's tomb-chapel show an idealized vision of daily ancient egyptian life . much less is known about the lives of the majority of society . | would only the wealthier families have been able to afford toys for their spawns or were they economical enough for lower class kids ? |
one of the four greatest powers in the world aksum was the name of a city and a kingdom which is essentially modern-day northern ethiopia ( tigray province ) and eritrea . research shows that aksum was a major naval and trading power from the 1st to the 7th centuries c.e . as a civilization it had a profound impact upo... | although their scriptures and prayers are in ge ’ ez , rather than in hebrew , they adhere to religious beliefs and practices set out in the pentateuch ( torah ) , the religious texts of the jewish religion . although often regarded by scholars/academics as not technically ‘ `` jewish '' but instead a pre-christian , s... | if judaism is religion , why are people now associating with a race/culture of people ? |
one of the four greatest powers in the world aksum was the name of a city and a kingdom which is essentially modern-day northern ethiopia ( tigray province ) and eritrea . research shows that aksum was a major naval and trading power from the 1st to the 7th centuries c.e . as a civilization it had a profound impact upo... | judaism although christianity had a profound effect upon aksum , judaism also had a substantial impact on the kingdom . a group of people from the region called the beta israel have been described as `` black jews . '' although their scriptures and prayers are in ge ’ ez , rather than in hebrew , they adhere to religio... | `` black jews '' why are they not just jews ? |
one of the four greatest powers in the world aksum was the name of a city and a kingdom which is essentially modern-day northern ethiopia ( tigray province ) and eritrea . research shows that aksum was a major naval and trading power from the 1st to the 7th centuries c.e . as a civilization it had a profound impact upo... | aksum developed a civilization and empire whose influence , at its height in the 4th and 5th centuries c.e. , extended throughout the regions lying south of the roman empire , from the fringes of the sahara in the west , across the red sea to the inner arabian desert in the east . the aksumites developed africa ’ s onl... | they traded with egypt , how is it that egyptian writing is not `` indigenous '' to africa ? |
one of the four greatest powers in the world aksum was the name of a city and a kingdom which is essentially modern-day northern ethiopia ( tigray province ) and eritrea . research shows that aksum was a major naval and trading power from the 1st to the 7th centuries c.e . as a civilization it had a profound impact upo... | the aksumites developed africa ’ s only indigenous written script , ge ’ ez . they traded with egypt , the eastern mediterranean and arabia . despite its power and reputation—it was described by a persian writer as one of the four greatest powers in the world at the time—very little is known about aksum . | have i missed some reorganization of the world where egypt has been relocated to a different continent ? |
one of the four greatest powers in the world aksum was the name of a city and a kingdom which is essentially modern-day northern ethiopia ( tigray province ) and eritrea . research shows that aksum was a major naval and trading power from the 1st to the 7th centuries c.e . as a civilization it had a profound impact upo... | despite its power and reputation—it was described by a persian writer as one of the four greatest powers in the world at the time—very little is known about aksum . written scripts existed , but no histories or descriptions have been found to make this african civilization come alive . a counterpoint to the greek and r... | do the african civilizations still tell tales about the older civilizations ? |
one of the four greatest powers in the world aksum was the name of a city and a kingdom which is essentially modern-day northern ethiopia ( tigray province ) and eritrea . research shows that aksum was a major naval and trading power from the 1st to the 7th centuries c.e . as a civilization it had a profound impact upo... | one of the four greatest powers in the world aksum was the name of a city and a kingdom which is essentially modern-day northern ethiopia ( tigray province ) and eritrea . research shows that aksum was a major naval and trading power from the 1st to the 7th centuries c.e . | was part of eritrea in the kingdom of axum ( aksum ) ? |
one of the four greatest powers in the world aksum was the name of a city and a kingdom which is essentially modern-day northern ethiopia ( tigray province ) and eritrea . research shows that aksum was a major naval and trading power from the 1st to the 7th centuries c.e . as a civilization it had a profound impact upo... | the king had been converted by frumentius , a former syrian captive who was made bishop of aksum . on his return , frumentius had promptly baptized king ezana , who then declared aksum a christian state , followed by the king ’ s active converting of the aksumites . by the 6th century , king kaleb was recognized as a c... | the aksum ruler was described as the ''king of kings '' , wouldn't that mean that jesus was a kind of symbolic head of state ? |
one of the four greatest powers in the world aksum was the name of a city and a kingdom which is essentially modern-day northern ethiopia ( tigray province ) and eritrea . research shows that aksum was a major naval and trading power from the 1st to the 7th centuries c.e . as a civilization it had a profound impact upo... | between 1985 and 1991 almost the whole beta israel population of ethiopia was moved to israel . solomon and sheba the queen of sheba and king solomon are important figures in ethiopian heritage . traditional accounts describe their meeting when sheba , queen of aksum , went to jerusalem , and their son menelik i formed... | did queen sheba really rule over aksum ? |
one of the four greatest powers in the world aksum was the name of a city and a kingdom which is essentially modern-day northern ethiopia ( tigray province ) and eritrea . research shows that aksum was a major naval and trading power from the 1st to the 7th centuries c.e . as a civilization it had a profound impact upo... | this invasion saw the inclusion of the region into the aksumite kingdom for the next seven decades . judaism although christianity had a profound effect upon aksum , judaism also had a substantial impact on the kingdom . a group of people from the region called the beta israel have been described as `` black jews . '' | were there any laws/rules that ran the kingdom , i cant find examples , and what was the impact that the government had in axum ? |
one of the four greatest powers in the world aksum was the name of a city and a kingdom which is essentially modern-day northern ethiopia ( tigray province ) and eritrea . research shows that aksum was a major naval and trading power from the 1st to the 7th centuries c.e . as a civilization it had a profound impact upo... | one of the four greatest powers in the world aksum was the name of a city and a kingdom which is essentially modern-day northern ethiopia ( tigray province ) and eritrea . research shows that aksum was a major naval and trading power from the 1st to the 7th centuries c.e . | what was the relationship between the religions of askum and their government ? |
one of the four greatest powers in the world aksum was the name of a city and a kingdom which is essentially modern-day northern ethiopia ( tigray province ) and eritrea . research shows that aksum was a major naval and trading power from the 1st to the 7th centuries c.e . as a civilization it had a profound impact upo... | one of the four greatest powers in the world aksum was the name of a city and a kingdom which is essentially modern-day northern ethiopia ( tigray province ) and eritrea . research shows that aksum was a major naval and trading power from the 1st to the 7th centuries c.e . | what are some geography differences between the ancient kingdom of aksum and modern-day ethiopia ? |
overview the us government 's decision to develop a hydrogen bomb , first tested in 1952 , committed the united states to an ever-escalating arms race with the soviet union . the arms race led many americans to fear that nuclear war could happen at any time , and the us government urged citizens to prepare to survive a... | early contributors included j. robert oppenheimer , the director of the manhattan project , and albert einstein , who dedicated the final years of his life to promoting nuclear disarmament . in 1947 , they printed their first magazine , placing on its cover what would become an iconic symbol of the nuclear age : the do... | does anyone know what the doomsday clock stood at in 1962 during the cuban missile crisis ? |
overview the us government 's decision to develop a hydrogen bomb , first tested in 1952 , committed the united states to an ever-escalating arms race with the soviet union . the arms race led many americans to fear that nuclear war could happen at any time , and the us government urged citizens to prepare to survive a... | when the clock first appeared , the scientists predicted that humankind was mere seven minutes to midnight. $ ^1 $ but by 1953 , the scientists had revised their estimate to just two minutes to midnight . their reason for this panicked prognosis was the united states ' decision to develop and test a hydrogen bomb , or ... | how in the world is ducking and covering going to work when your out in the open when a atomic bomb goes off ? |
overview the us government 's decision to develop a hydrogen bomb , first tested in 1952 , committed the united states to an ever-escalating arms race with the soviet union . the arms race led many americans to fear that nuclear war could happen at any time , and the us government urged citizens to prepare to survive a... | early contributors included j. robert oppenheimer , the director of the manhattan project , and albert einstein , who dedicated the final years of his life to promoting nuclear disarmament . in 1947 , they printed their first magazine , placing on its cover what would become an iconic symbol of the nuclear age : the do... | where does the doomsday clock currently stand ? |
overview the us government 's decision to develop a hydrogen bomb , first tested in 1952 , committed the united states to an ever-escalating arms race with the soviet union . the arms race led many americans to fear that nuclear war could happen at any time , and the us government urged citizens to prepare to survive a... | early contributors included j. robert oppenheimer , the director of the manhattan project , and albert einstein , who dedicated the final years of his life to promoting nuclear disarmament . in 1947 , they printed their first magazine , placing on its cover what would become an iconic symbol of the nuclear age : the do... | what is the doomsday clock ? |
overview the us government 's decision to develop a hydrogen bomb , first tested in 1952 , committed the united states to an ever-escalating arms race with the soviet union . the arms race led many americans to fear that nuclear war could happen at any time , and the us government urged citizens to prepare to survive a... | when the clock first appeared , the scientists predicted that humankind was mere seven minutes to midnight. $ ^1 $ but by 1953 , the scientists had revised their estimate to just two minutes to midnight . their reason for this panicked prognosis was the united states ' decision to develop and test a hydrogen bomb , or ... | what is more powerful an h-bomb or a a-bomb ? |
overview the us government 's decision to develop a hydrogen bomb , first tested in 1952 , committed the united states to an ever-escalating arms race with the soviet union . the arms race led many americans to fear that nuclear war could happen at any time , and the us government urged citizens to prepare to survive a... | the us government provided instructions for building and equipping bomb shelters in basements or backyards , and some cities constructed municipal shelters . nuclear bomb drills became a routine part of disaster preparedness. $ ^5 $ the civil defense film duck and cover , first screened in 1952 , sought to help schoolc... | cant special material protect you from the excess radiation ? |
overview the us government 's decision to develop a hydrogen bomb , first tested in 1952 , committed the united states to an ever-escalating arms race with the soviet union . the arms race led many americans to fear that nuclear war could happen at any time , and the us government urged citizens to prepare to survive a... | did civil defense films like duck and cover comfort or traumatize american children ? would it have been possible to halt nuclear development , or was the creation of more and deadlier atomic bombs unavoidable ? | did the public not realise how dangerous radiation or an atomic blast was then ? |
overview the us government 's decision to develop a hydrogen bomb , first tested in 1952 , committed the united states to an ever-escalating arms race with the soviet union . the arms race led many americans to fear that nuclear war could happen at any time , and the us government urged citizens to prepare to survive a... | when the clock first appeared , the scientists predicted that humankind was mere seven minutes to midnight. $ ^1 $ but by 1953 , the scientists had revised their estimate to just two minutes to midnight . their reason for this panicked prognosis was the united states ' decision to develop and test a hydrogen bomb , or ... | is the hydrogen bomb the one that was not dropped ? |
overview the us government 's decision to develop a hydrogen bomb , first tested in 1952 , committed the united states to an ever-escalating arms race with the soviet union . the arms race led many americans to fear that nuclear war could happen at any time , and the us government urged citizens to prepare to survive a... | overview the us government 's decision to develop a hydrogen bomb , first tested in 1952 , committed the united states to an ever-escalating arms race with the soviet union . the arms race led many americans to fear that nuclear war could happen at any time , and the us government urged citizens to prepare to survive a... | when was the last time a atomic bomb was used , and how many have been used since the first ? |
overview the us government 's decision to develop a hydrogen bomb , first tested in 1952 , committed the united states to an ever-escalating arms race with the soviet union . the arms race led many americans to fear that nuclear war could happen at any time , and the us government urged citizens to prepare to survive a... | when the clock first appeared , the scientists predicted that humankind was mere seven minutes to midnight. $ ^1 $ but by 1953 , the scientists had revised their estimate to just two minutes to midnight . their reason for this panicked prognosis was the united states ' decision to develop and test a hydrogen bomb , or ... | and how does the nuclear bomb work ? |
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