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Consider the equation 1/a + 1/b + 1/c = 1 where a, b and c are
natural numbers and 0 < a < b < c. Prove that there is
only one set of values which satisfy this equation.
Three frogs hopped onto the table. A red frog on the left a green in the middle and a blue frog on the right. Then frogs started jumping randomly over... | <urn:uuid:e64d882b-51cd-4dd6-af31-c92ea9d976c0> | 3.171875 | 1,790 | Content Listing | Science & Tech. | 77.146735 |
One should separate the question into two parts, the first of which is philosophical, and the second physics. The philosophical question is resolved by understanding that there are "constants" which are just those that set the system of units, and these are constant for the simple reason that they define our convention... | <urn:uuid:c3bdbea6-b0c3-46e0-8612-8ff3b5dbfc32> | 3.0625 | 1,013 | Q&A Forum | Science & Tech. | 34.552933 |
New presentation showing all three main greenhouse gases on one graph.
Carbon dioxide’s post 1990 acceleration is sustained.
Methane post 2007 renewed increase due to planetary feedback emissions sustained.
Nitrous oxide still by far the fastest rising greenhouse gas, the most powerful of the 3 GHGs.
Mauna Loa carbon d... | <urn:uuid:c999d879-412e-4040-871f-eaef924fbb3c> | 3.53125 | 343 | Knowledge Article | Science & Tech. | 41.553235 |
Science subject and location tags
Articles, documents and multimedia from ABC Science
Monday, 22 April 2013
Average temperatures around the world in the last thirty years of the 20th century were higher than any other time in nearly 1400 years.
Friday, 19 April 2013
Antarctica's abrupt deep freeze around 34 million yea... | <urn:uuid:f08841b4-8351-4247-83d6-7720785eaa8b> | 3 | 538 | Content Listing | Science & Tech. | 47.965657 |
Mysterious world of RNAs: CIRCULAR RNAs Regulating MicroRNAs
The world of RNAs does not seems to stop surprising us, latest being CIRCULAR RNAs controlling gene expression. In past few decades we have come across many non traditional RNAs. While some were very short and some surprisingly long and some influenced gene e... | <urn:uuid:700882d9-f266-4ec4-9256-a323cdfb84f3> | 3.21875 | 584 | Nonfiction Writing | Science & Tech. | 42.228745 |
How do you predict fog?
First, fog is simply a cloud at ground level. It's formed by water vapor cooling and condensing. Forecasters look for wet ground, light wind or no wind and clear skies. The clear skies and light winds allow the cooling needed to condense water vapor (from the wet ground) into the tiny water drop... | <urn:uuid:ba6f8c3d-1513-4cce-9919-2d0de7e6e8db> | 3.234375 | 77 | Knowledge Article | Science & Tech. | 78.560286 |
Name: Catherine Barber
How do you explain the oxidation process when combining
energy, carbohydrates, protein, and fats? How is oxidation also related
Any oxidation process involves the loss of electrons from atoms - and
usually the combination of other atoms with oxygen in the process.
Oxidation is the chemical proces... | <urn:uuid:b434d20e-5bb4-4f63-9944-d88d468fab80> | 3.09375 | 161 | Q&A Forum | Science & Tech. | 29.496313 |
Color Your World
Color the picture by clicking on a color swatch at the bottom of the image then click on the image where you want to apply that color. Color off-line by downloading and printing the pdf version.
The sun is unique. It is among the top 10% (by mass) of stars in its neighborhood. It has the ideal size to ... | <urn:uuid:27619205-662a-4e6b-a1ce-c127a37dcbc0> | 2.71875 | 136 | Tutorial | Science & Tech. | 65.862077 |
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
December 20, 1998
Explanation: Is our Galaxy this thin? We believe so. The Milky Way, like NGC 891 pictured above, has the width of a typical spiral... | <urn:uuid:fe9901a8-8bd1-48fc-b02b-b1a4e7dbe1a5> | 3.984375 | 250 | Knowledge Article | Science & Tech. | 63.119069 |
In our earlier post we discussed why this bound they put forward was based on a weak argumentation. The essential point was assuming the highest energy photon had been emitted during a particular late peak in the low energy spectrum. Since that peak almost coincided with the arrival of the photon the resulting bound wa... | <urn:uuid:78032ba1-48f0-45b9-8dcb-0478ed553bc6> | 2.6875 | 384 | Personal Blog | Science & Tech. | 46.713763 |
Next: Mapping Files Up: Parallel I/O Previous: Parallel I/O
Two ideas have been advanced which use the idea of giving hints to the compiler without changing the Fortran file semantics.
The first is based on the observation that although the distribution of an array when it is written may be available to the compiler or... | <urn:uuid:cbc626fb-187c-43c6-b1e4-21ec9322a0d2> | 2.890625 | 347 | Documentation | Software Dev. | 51.432019 |
Electron Transport in Photosynthesis
The above illustration draws from ideas in both Moore, et al. and Karp to outline the steps in the electron transport process that occurs in the thylakoid membranes of chloroplasts during photosynthesis. Both Photosystems I and II are utilized to split water to get electrons. Electr... | <urn:uuid:c6e8a278-0c0b-4a7e-861c-cd7cda3a37a1> | 3.28125 | 178 | Knowledge Article | Science & Tech. | 23.958234 |
We may be hundreds of miles away from the nearest ocean, but the Show-Me-State has jellyfish. Swimmers and skiers need not be alarmed, however. Although the tentacles of freshwater jellyfish are armed with stinging cells like those of their saltwater cousins, Missouri's freshwater jellyfish are only about the size of a... | <urn:uuid:f1e143fd-f80a-4fbc-a7dc-df70eaab0137> | 3.640625 | 768 | Knowledge Article | Science & Tech. | 33.848446 |
1) You have specified width as %5x but there is a rule regarding width specifier in C. If the width of the number to be printed is more than the assigned width, the width specifier is ignored. So in the last column the number content cant be represented in the assigned width 5 so width limit has been ignored.Why width ... | <urn:uuid:257be97d-5042-403d-a2ad-1da37f0bee81> | 3.5 | 798 | Q&A Forum | Software Dev. | 72.035207 |
The Polar bear is animal that is admired around the
world for its looks and cute appearance. For anyone who had never seen
one of these animals in the world they would link them with the polar bears
on the coke cola commercials. Don't let these cute looking animals fool
you, as anyone who has seen them in the wild woul... | <urn:uuid:6e28e6b4-3fa1-4c8d-a1df-d386da823c0b> | 3.15625 | 327 | Knowledge Article | Science & Tech. | 65.218333 |
|Hugging the horizon, a dark red Moon greeted
early morning skygazers in eastern
Atlantic regions on December 21, as the total phase of 2010's
Solstice Lunar Eclipse began near
This well composed image of the
event is a composite of multiple exposures following
the progression of the eclipse from
Tenerife, Canary Islan... | <urn:uuid:622a9810-54ee-40f0-96ba-e85d69803ac9> | 2.859375 | 143 | Truncated | Science & Tech. | 27.145657 |
The unconfined aquifer is the major source of water supply in west-central and southwestern Delaware. The aquifer, which is composed of quartz sand, gravel, clay, and silt, ranges in thickness from 20 to 200 feet. The water table ranges from land surface to about 20 feet below land surface. Analyses of water from wells... | <urn:uuid:558e54dd-6b9c-4258-895e-270720a29124> | 3.46875 | 141 | Knowledge Article | Science & Tech. | 32.792231 |
According to the Los Angeles Times, L.A. Mayor Antonio Villaraigosa is advocating a proposal to install enough rooftop solar panels on buildings in the city by 2013 to power 100,000 households now served by the Department of Water and Power (DWP).
According the MSNBC, a team led by former NASA executive and physicist J... | <urn:uuid:3c0ee669-c370-48a5-8986-28aef8b438e4> | 2.75 | 546 | Content Listing | Science & Tech. | 37.667526 |
Definition of Which of the following compounds shows aromatic properties?
Any of a large class of organic compounds whose molecular structure includes one or more planar rings of atoms, usually but not always six carbon atoms. The ring's carbon-carbon bonds ( bonding) are neither single nor double but a type characteri... | <urn:uuid:2018cd21-05f8-44ea-bb33-b2ee3200d825> | 3.140625 | 128 | Content Listing | Science & Tech. | 39.647834 |
From about A.D. 950 to 1250, the North Atlantic region of the globe experienced a period of higher-than-normal temperatures. Known as the Medieval Warm Period (MWP), it was a time in which crops could grow much further north than is now common and oceanic ice did not come as far south. Eventually the warming was revers... | <urn:uuid:a0dcfb6a-72bd-4c26-8e6e-9841cd7bdae3> | 3.78125 | 302 | Truncated | Science & Tech. | 40.777832 |
For instance, one of my rewrite rules for a project I'm working on is "replace o with ö if o is the next to last vowel and even numbered (counting left to right)"
So, an example is:
heabatoik would become heabatöik (o is the next to last vowel, as well as the 4th vowel)
habatoik would not change (o is the next to last ... | <urn:uuid:7a42c6ae-b51b-4c06-82bd-562ad06ca0d8> | 3.140625 | 779 | Documentation | Software Dev. | 52.347729 |
Last week, I got my copy of the 2012 Particle Data Group Review of Particle Physics booklet — which, along with its heavy, 1000-page full-length counterpart, we simply call “the PDG.” My very first copy, during my first months at CERN in the summer of 2003, is a vivid memory for me. Here was a book with almost everythi... | <urn:uuid:72c59262-4f2e-4b62-bdda-b55f3f41a133> | 2.953125 | 557 | Personal Blog | Science & Tech. | 70.446659 |
2012, Oceanography 25(3):202–203, http://dx.doi.org/10.5670/oceanog.2012.95
Adrian Jenkins | British Antarctic Survey, Natural Environment Research Council, Cambridge, UK
Pierre Dutrieux | British Antarctic Survey, Natural Environment Research Council, Cambridge, UK
Stan Jacobs | Lamont-Doherty Earth Observatory of Col... | <urn:uuid:5c87e5a6-7de5-438a-b63d-68aae7e7dd08> | 2.9375 | 1,445 | Knowledge Article | Science & Tech. | 83.590357 |
If and are two distinct rational numbers written in their lowest terms, then , which implies that , which implies that . Therefore, if is a real number and we can find a sequence of rational numbers (in their lowest terms, with denominators tending to infinity) such that (which is equivalent to saying that ), then cann... | <urn:uuid:fed96f57-f109-4469-89ba-dc72430980bf> | 3.5 | 482 | Academic Writing | Science & Tech. | 43.828314 |
In this case, "o" means object. It's an attempt at using the "systems" variation of hungarian notation.
There are two types of hungarian: Systems and Apps. Systems uses a prefix to identify the type of data stored. For example, the "i" in iCounter would indicate that the variable was an integer.
Apps hungarian took a c... | <urn:uuid:78e73d65-3bd4-4bfa-99b3-848d64e1b5e5> | 3.109375 | 305 | Q&A Forum | Software Dev. | 59.586538 |
4.2. Getting Files into the Repository
Now that you have created the empty repository, it's time to get the project files into it. To do this, you need to put the files into a basic directory structure for the repository, and then import the entire structure. It would be possible to make that directory structure as sim... | <urn:uuid:48c50c81-0e2f-4550-9f3e-7876f308d1b6> | 2.96875 | 918 | Tutorial | Software Dev. | 40.124195 |
Since the time of the Herschels, surveys of bright galaxies have provided the foundations upon which much of observational cosmology rests. A history of the major surveys extends from William and John Herschel in the first half of the 19th century, through William Parsons, the third Earl of Rosse, to Isaac Roberts, Dre... | <urn:uuid:7fdcfa53-19c0-4d7d-8688-5db1cdcf9dcb> | 3.421875 | 981 | Knowledge Article | Science & Tech. | 46.231375 |
Blue Electron Beam
Name: Justin S.
When using the Leybold q/m Apparatus, why is the beam of
electrons coming out of the electron gun blue?
I cannot say for certain, because I do not have the apparatus. I can
however, think of two very likely possibilities.
One, of course, is that the source of electrons is also a sourc... | <urn:uuid:e4bd341a-dc97-4931-94d1-7ec6fc67f6e5> | 3.46875 | 377 | Q&A Forum | Science & Tech. | 56.729561 |
Sea Gull Behavior
We are 300 miles from the east coast on Claytor Lake in
VA. Lately we have seen thousands of sea gulls on the water and flying
around. What are they doing so far inland, where do they go at night,and
where do they go from here.
I'm from Illinois, so I can't answer specific questions. However, the term... | <urn:uuid:e4790ed3-8249-4632-aaca-e5b590548dd8> | 3.109375 | 246 | Knowledge Article | Science & Tech. | 63.557913 |
Weekly Problem 27 - 2013
Can you find the area of a parallelogram defined by two vectors?
The seven pieces in this 12 cm by 12 cm square make a Tangram set. What is the area of the shaded parallelogram?
Four rods, two of length a and two of length
b, are linked to form a kite, as shown in the diagram. The
linkage is mo... | <urn:uuid:0e6d0a69-bc16-4a82-a7b6-5e0d6a20b85b> | 3.234375 | 131 | Q&A Forum | Science & Tech. | 70.28 |
|11 Nov 2010||
Blueprint to protect the Future of Australia's oceans revealed
Conservation Biology paper - assessing the capacity of Australia's Protected areas to protect endangered species
A new paper has come out in Conservation Biology entitled The capacity of Australia’protected-area system to represent threatened... | <urn:uuid:bfd304d6-555c-44b4-bbef-08f4f2f98a6a> | 2.796875 | 2,325 | Content Listing | Science & Tech. | 42.012942 |
What is a gas bladder?
If you have found a strange balloon-like object washed up on the beach, you may be looking at a fish's gas bladder.
The images show a gas bladder found by P. Merrick on Avoca Beach in January 2005. It is the gas bladder from a Porcupinefish (often called Spiny Pufferfish or Burrfishes).
The gas b... | <urn:uuid:8c4e680e-3216-4dd5-85f4-bed4c6060102> | 3.4375 | 213 | Knowledge Article | Science & Tech. | 52.653696 |
In the 1970s, an astronomer called Vera Rubin was measuring the velocities of stars in other galaxies and noticed something strange: the stars at the galaxies' edges moved faster than had been predicted. To reconcile her observations with the law of gravity, scientists proposed that there is matter we can't see and cal... | <urn:uuid:7aa16ff2-5ece-44c5-994f-44048a949d95> | 4.34375 | 940 | Knowledge Article | Science & Tech. | 32.832429 |
Simply begin typing or use the editing tools above to add to this article.
Once you are finished and click submit, your modifications will be sent to our editors for review.
The prolific zooplankton of Antarctic waters feed on the copious phytoplankton and, in turn, form the basic diet of whales, seals, fish, squid, an... | <urn:uuid:85d13ed8-a28c-41b1-9cd5-ae3c61f357bc> | 3.265625 | 407 | Content Listing | Science & Tech. | 38.282625 |
How We Should Program GPGPUs
Listing 3. Fortran Matrix Multiplication Loop, Tagged to Be Compiled for the Accelerator
!$acc begin do i = 1,n1 do k = 1,n3 c(i,k) = 0.0 do j = 1,n2 c(i,k) = c(i,k) + a(i,j) + b(j,k) enddo enddo enddo !$acc end
Although a compiler may be able to determine or estimate compute intensity, the... | <urn:uuid:dd53632f-b772-4eee-bcc4-41dd4541e62a> | 2.765625 | 1,504 | Truncated | Software Dev. | 43.977042 |
Report an inappropriate comment
Wings Don't Generate Lift Through Pressure Differences
Wed Dec 08 12:16:33 GMT 2010 by Jeroen Versteeg
"Wings, whether bird or Boeing, soar because air moves faster over their top sides, reducing the pressure above. The relatively high pressure below pushes upwards, providing lift."
*sig... | <urn:uuid:386674f8-88da-4420-a0ab-dbdd2aa821a9> | 2.765625 | 143 | Comment Section | Science & Tech. | 68.0544 |
|Nov23-08, 08:04 PM||#1|
Archimedes's Principle Lab
we were doing a lab to test archimedes's principle and it said to measure the specific gravity of a sphere using a jolly balance..
however, i fail to see how this is related to archimedes's principle since the jolly balance doesnt measure the displacement of the water... | <urn:uuid:3a1b3176-966b-4a22-bebc-612dfaecd70c> | 3.046875 | 452 | Comment Section | Science & Tech. | 53.196235 |
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Ask RP Photonics concerning different kinds of blue lasers. Particular expertise is available for frequency-doubled lasers and for blue upconversion lasers.
Definition: lasers emitting blue light
German: blaue Laser
This article deals with lasers emitting in the blue and violet spectral region, i... | <urn:uuid:07a66219-c11f-428e-8eb7-f809c2e2b49b> | 2.875 | 1,675 | Knowledge Article | Science & Tech. | 65.811383 |
By IVARS PETERSON
According to modern physics, the first micromoments of the Big Bang were a time of unimaginable extremes.
No more than a cosmic spark, the universe was then so extraordinarily hot that the strong nuclear force was too weak to keep quarks bound tightly together in protons and other particles of ordinar... | <urn:uuid:a3ea59d8-3734-46b9-ba6f-3825e580d28d> | 3.1875 | 1,881 | Truncated | Science & Tech. | 35.945707 |
A recent publication in PNAS conducts a genetic analysis of the pink iguana, or rosada, to this point only an anecdotal species (some park rangers in the Galápagos saw one in 1986). It turns out that this version of the land iguana only lives on one particular volcano on the island. Based on data analysis of microsatel... | <urn:uuid:e5ba80cb-d171-4ec9-9d2e-2b3c287c757f> | 3.59375 | 219 | Personal Blog | Science & Tech. | 42.331858 |
Definition: Merge n sorted streams into one output stream. All the stream heads are compared, and the head with the least key is removed and written to the output. This is repeated until all streams are empty.
See also ideal merge, optimal merge.
Note: The run time is Θ(mn), where m is the total number of elements and ... | <urn:uuid:72c605b2-0b6b-44f7-9680-5e7a4b48f01f> | 3.359375 | 200 | Structured Data | Software Dev. | 76.854199 |
September 20, 2012 4:07 pm
Scientific American’s Symbiartic blog is celebrating the month September with a new piece of science art every day.
They just highlighted the beautiful MicROCKScopica project, a website created by Bernardo Cesare. Cesare is a professor of petrology at the University of Padova, Italy, and a ph... | <urn:uuid:c50c405b-0333-4654-9155-0fb4ce85a8b7> | 3.515625 | 350 | Personal Blog | Science & Tech. | 54.503194 |
Conditions of Use
Living in Space
Living in a zero gravity world, millions of miles away from your own planet must be a really exiting but challenging adventure. In a space shuttle, even the most basic things like taking a shower and sleeping can become very complicated. I did some research to find out what it must be ... | <urn:uuid:5d2e2f73-fa38-4557-89f5-b9ac0e7f24a0> | 3.140625 | 638 | Personal Blog | Science & Tech. | 67.550084 |
Web design and development can be as easy as using a template to build a web site or it can be a refined skill for professionals. In this section, learn more about design, animation, web servers, domain names and more.
As powerful as computers are, they have difficulty listening and understanding the people who use the... | <urn:uuid:dba4d077-4323-4108-8326-44e27ab0a1ba> | 2.90625 | 239 | Content Listing | Software Dev. | 52.821902 |
Correct usage/method of Java Interfaces
I really don't know this is the right place to post this question,
i hope my question though fundamental, may not be that basic.
My question is: Java Interfaces, what is the proper way of using them? Conceptually, everybody i spoke to, says it supports multiple inheritance. And t... | <urn:uuid:c5ec55a8-ac3d-4709-9a18-296381d9facb> | 3.015625 | 1,133 | Comment Section | Software Dev. | 51.793082 |
How about adding rational fraction to Python?
Sun Mar 2 17:36:28 CET 2008
Lie <Lie.1296 at gmail.com> writes:
> You hit the right note, but what I meant is the numeric type
> unification would make it _appear_ to consist of a single numeric type
> (yeah, I know it isn't actually, but what appears from outside isn't
> a... | <urn:uuid:eadc77b9-e7eb-4220-8dde-dedfff608182> | 2.703125 | 414 | Comment Section | Software Dev. | 52.099188 |
I am not a geologist, although I did go to school and primarily did take geology classes, but that was years ago and not the real subject of this post. The real subject is the fact that we have a super volcano smack dab in the middle of the United States and nobody seems to be talking, or considering the risk it poses.... | <urn:uuid:1ea76be6-d2d0-408e-878e-3756b49fdab5> | 2.828125 | 553 | Personal Blog | Science & Tech. | 63.916538 |
NASA eClips: Aurora: Why the exist and what causes them
This NASA video segment explores the phenomenon of the polar aurora, called the Northern Lights (Aurora Borealis) in the Northern hemisphere. Scientists have been investigating them for nearly 200 years. With the help of satellite measurements we now have a very d... | <urn:uuid:407b2a3f-1c17-4ef9-80e1-6ba0a0db029c> | 4.03125 | 212 | Content Listing | Science & Tech. | 26.189655 |
The reversal potential (also known as the Nernst potential) of an ion is the potential of the cell membrane at which there is no net (overall) flow of ions from one side of the membrane to the other. It defines the negative resting potential of neurons, muscle cells and other excitable cells when the cell is quite (not... | <urn:uuid:54064140-01e5-4a2c-b2fb-b1578db73766> | 3.546875 | 1,401 | Knowledge Article | Science & Tech. | 38.171556 |
Rusty Elliotte Harold continues his coverage of VML in thi ssecond of two parts. This part includes coverage on how to position VML shapes with CSS properties,
More articles by Elliotte Harold
Microsoft's Vector Markup Language (VML) is an XML application for vector graphics that can be embedded in Web pages in place o... | <urn:uuid:171986ab-6d6b-4d26-832e-35bf1ab2247e> | 2.84375 | 242 | Content Listing | Software Dev. | 55.454783 |
Narrow the scope of your process to individual elements (designed with Class Diagrams). Add other diagrams where they help you understand the system. Repeat Steps 1 through 4 as appropriate for the current scope.
In this step, you’ll narrow your scope to look at a single component (as identified in Step 4). By zooming ... | <urn:uuid:0494b634-a017-4d5c-9b48-65f0118ccb6b> | 3.140625 | 1,502 | Tutorial | Software Dev. | 43.729681 |
Introductionsun, intensely hot, self-luminous body of gases at the center of the solar system. Its gravitational attraction maintains the planets, comets, and other bodies of the solar system in their orbits.
Sections in this article:
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University P... | <urn:uuid:ea5a452a-2da0-4224-98e2-44e37bb0a6d2> | 3.15625 | 85 | Knowledge Article | Science & Tech. | 21.611368 |
Science Reference Guides
Geosphere-biosphere interactions and climate. Edited by Lennart O. Bengtsson,
Claus U. Hammer. New York, Cambridge University Press, 2001. 302 p.
Johnson, Douglas L. Land degradation: creation and destruction. 2nd ed. Lanham, Rowman & Littlefield, c2007. 303 p.
Includes bibliographical referenc... | <urn:uuid:63d58fe5-6578-45c9-b82d-814dc3013329> | 2.828125 | 616 | Content Listing | Science & Tech. | 52.318055 |
CAT | History
In today’s modern era, it’s almost impossible to imagine a time when we didn’t know about microscopic particles and structures; magnification is a fundamental part of everyday life, from a pair of reading glasses to the side mirrors on a car. With the birth of the optical microscope in the 17th century, s... | <urn:uuid:2b2bac14-847c-49ed-85d5-8ce1e7dffe62> | 3.984375 | 1,716 | Personal Blog | Science & Tech. | 35.985926 |
(CO2.aq),1 bicarbonate ion (HCO3–), and carbonate ion (CO32–) (see Box 2.1 for definitions.). CO2 dissolved in seawater acts as an acid and provides hydrogen ions (H+) to any added base to form bicarbonate:
CO32– acts as a base and takes up H+ from any added acid to also form bicarbonate:
Borate [B(OH)4–] also acts as ... | <urn:uuid:83f71493-3e49-4276-a40a-ec809f8c5efc> | 3.703125 | 574 | Academic Writing | Science & Tech. | 56.875867 |
The great yellow bumblebee, Bombus distinguendus, is one of our most striking species. It has shown a very dramatic decline in Britain, highlighting the plight of bumblebees and making it a flagship species for bumblebee conservation.
Bees are extremely important for pollinating commercial crops and they account for 85... | <urn:uuid:edd189ad-198c-4d90-a4ec-335822b56bef> | 3.828125 | 505 | Knowledge Article | Science & Tech. | 36.152056 |
In today's high paced modern world, technology is moving faster and faster and boosting the speed of our everyday lives. Every eight months there is a new model of some type of technological device reaching the market and the old is being discarded as it is unable to keep up with our fast paced society. Where have the ... | <urn:uuid:b6bc9123-b9dc-434f-b6be-f0f564c40eff> | 3.375 | 536 | Truncated | Science & Tech. | 42.752244 |
From our analysis of falling in air,
we found that if an object falls long enough through a fluid, it will
reach a terminal velocity. Let's look a little closer at this
- Terminal velocity occurs when the air resistance (sometimes
called "drag") force equals the weight of the falling object.
This means that:
- the obje... | <urn:uuid:259e7a9f-034d-45c0-a801-fafb1e16ca45> | 4.21875 | 162 | Knowledge Article | Science & Tech. | 55.615625 |
Introductory Trailer to Chandra
In Florence, Italy, in the year 1609, the world changed. Using a small telescope, Galileo proved that the Earth is not distinct from the universe, but part of it. And he showed that there is much more to the universe than we see with the naked eye.
In the twentieth century, astronomers m... | <urn:uuid:9e8d4320-ac23-4b83-b463-dbe48d860434> | 3.828125 | 154 | Truncated | Science & Tech. | 31.210551 |
In some ways the augmentation of intelligence already has a long history. From the first time we cut notches into sticks or painted on cave walls, we were augmenting our memories by creating a tangible record. The written word developed this concept even further. More recently, the internet and search engines have give... | <urn:uuid:9de3e5e1-1e93-4449-93ca-2091a00a18d7> | 3.5 | 698 | Personal Blog | Science & Tech. | 23.36861 |
3.4. The size-luminosity distribution function
The suggestion that it is smaller galaxies that are driving the increase in star-formation rate to z ~ 1 is more directly illustrated by the bivariate size-luminosity function. The Fig. 5 (from Paper 2) shows the bivariate size-luminosity function for all galaxies in the C... | <urn:uuid:e3cb3e7a-66ba-4a82-a3a2-9aa6450213fe> | 2.90625 | 335 | Academic Writing | Science & Tech. | 52.318793 |
January 12, 2012
The new species Paedophryne amauensis is the world's smallest vertebrate...so far. Photo from: Rittmeyer EN et al. (2012) Ecological Guild Evolution and the Discovery of the World's Smallest Vertebrate. PLoS ONE 7(1): e29797.
The smallest specimen of the new frog, named Paedophryne amauensis was just 7... | <urn:uuid:2aadd2f6-31fa-4e35-8a22-6b1c67d45bab> | 3.484375 | 924 | Content Listing | Science & Tech. | 54.527882 |
| The 1860 apparatus catalogue of Edward S. Ritchie of Boston
describes the apparatus at the left as
"Snell's Improved Powell's Wave Instrument, for showing the Undulations of Light, in Plane, Elliptical and Circular Polarization. The frame is of mahogany, 24 inches long by 30 inches in height; twenty four white balls ... | <urn:uuid:d2cea97c-6e4f-4689-be34-f5c6eb7830db> | 3.5625 | 472 | Knowledge Article | Science & Tech. | 54.085209 |
Thigmotropism is the growth of a plant around a support. Tropism is a phenomena by which a plant, usually climber like money plant and ivy, responds to a stimulus. Stems of the pea plant, for instance, are weak and have coil-like structures called tendrils. When tendrils approach a support (stick), a phytohormone calle... | <urn:uuid:4462dcf4-3f34-46ff-a13b-199b8d1b66a1> | 3.125 | 130 | Knowledge Article | Science & Tech. | 54.133333 |
A Solar System Like Ours, Supersized
The research was published Dec. 8 in the advance online version of the journal Nature.
The astronomers say the planetary system resembles a supersized version of our solar system.
"Besides having four giant planets, both systems also contain two 'debris belts' composed of small rock... | <urn:uuid:6529d406-46eb-4a39-894f-dbf2e99a9d3c> | 3.296875 | 944 | Knowledge Article | Science & Tech. | 42.635032 |
Simply begin typing or use the editing tools above to add to this article.
Once you are finished and click submit, your modifications will be sent to our editors for review.
...a nondestructive phenomenon if the resulting power dissipation is limited to a safe value. The applied forward voltage is usually less than one... | <urn:uuid:10639d36-0b5b-4bbe-bc53-767dac95b7d3> | 2.921875 | 125 | Knowledge Article | Science & Tech. | 44.558094 |
The Mutable Comprehension of const
constas a modifier of pointer/reference types in C and C++ can cause confusion.
I don't know about you, but I get all future-shocked when trying to express or understand concepts where language is used ambiguously. Unfortunately, even after all these years, it seems that the use of
co... | <urn:uuid:c6cbb55c-7276-4558-af63-0dcf82e78064> | 2.71875 | 1,419 | Personal Blog | Software Dev. | 48.031656 |
ANSI Common Lisp 21 Streams 21.2 Dictionary of Streams
&optional input-stream eof-error-p
- Arguments and Values:
input-stream -- an input stream designator.
The default is standard input.
eof-error-p - a generalized boolean.
The default is true.
eof-value - an object.
The default is nil.
recursive-p - a generalized bo... | <urn:uuid:caaa3ae9-03f2-46f5-996d-6a611c62359c> | 3.25 | 428 | Documentation | Software Dev. | 53.155849 |
Solar radiation, temperature and available water affect photo-synthesis, plant respiration and decomposition, thus climate change can lead to changes in NEP. A substantial part of the interannual variability in the rate of increase of CO2 is likely to reflect terrestrial biosphere responses to climate variability (Sect... | <urn:uuid:5ea7bd5e-8390-4613-9355-14073c3a7f5b> | 3.453125 | 832 | Academic Writing | Science & Tech. | 35.457098 |
Cloning is the process of producing populations of genetically-identical individuals that occurs in nature when organisms such as bacteria, insects or plants reproduce asexually.
Cloning in biotechnology refers to processes used to create copies of DNA fragments (molecular cloning), cells (cell cloning), or organisms.
... | <urn:uuid:5719458c-1988-4b9c-ba5f-10f143f7a867> | 3.984375 | 1,080 | Knowledge Article | Science & Tech. | 23.800998 |
CALIFORNIA sea lions may have the best memory of all non-human creatures. A female called Rio that learned a trick involving letters and numbers could still perform it 10 years later - even though she hadn't performed the trick in the intervening period.
Learning concepts such as "sameness" - when one letter or number ... | <urn:uuid:3536240a-4f05-4d6d-a9c7-6b59d137dc1b> | 3.546875 | 214 | Truncated | Science & Tech. | 47.142892 |
THE pull of the ocean lures people to beaches the world over, but its draw doesn't stop at the edge of the sand. At many beaches, broken waves quickly regroup into hidden torrents that sweep thousands of beach-goers straight out to sea every year.
If you've ever spent time wading in the sea, you have probably felt one ... | <urn:uuid:88bf203e-ab88-4c2a-b76c-34bf3295ba94> | 2.96875 | 213 | Truncated | Science & Tech. | 65.047812 |
4. METHOD OF SOLUTION
The electron differential spectrum as a function of depth is inferred by assuming that electrons travel straight ahead and that distance travelled and energy are related by a range-energy relationship. The electron dose rate at a given depth is calculated by integrating, over energy and direction,... | <urn:uuid:b177bc57-7ac5-4dea-8183-073921c54a64> | 2.75 | 312 | Documentation | Science & Tech. | 21.59423 |
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How Do We Know Light Behaves as a Wave?
Looking for a lab that coordinates with this page? Try the Getting it Right with Light Lab from The Laboratory.Curriculum Corner
Learning requires action. Give your students this sense-making activity from The Curriculum Corner.Fisherman Sunglasses
An applet near the bottom of th... | <urn:uuid:635353cd-795f-4736-ab20-12c94ed8699a> | 3.546875 | 3,152 | Tutorial | Science & Tech. | 34.857531 |
|Mar31-10, 08:14 PM||#1|
simple harmonic oscillation
1. The problem statement, all variables and given/known data
A block of mass 5 kg is attached to a spring of 2000N/m and compressed a distance of 0.6m. The spring is then released and oscillates.
a. what are the period, frequency, and angular frequency
b. what is the... | <urn:uuid:79231551-bed6-4a90-8f81-14ee9400fe02> | 3.078125 | 398 | Comment Section | Science & Tech. | 64.284118 |
See chapter 1 of the book.
This list is not complete.
So basically an innocent end user downloads a random program and allows it to be executed on his machine. Therefore there should be strict rules as to what this program can and cannot do.
var security_hazard = connection.open('malicious.com'); security_hazard.upload... | <urn:uuid:b0d30013-5347-4894-9a7d-8df07fe84052> | 2.828125 | 278 | Tutorial | Software Dev. | 50.2522 |
Oct. 22, 2007 Although the ozone layer over the Antarctic this year is relatively small, this is due to mild temperatures in the region’s stratosphere this winter and is not a sign of recovery, the United Nations World Meteorological Organization (WMO) has said.
Since 1998, only the ozone holes of 2002 and 2004 have be... | <urn:uuid:e42a443b-72eb-4b4b-8bd8-b319f16fa357> | 3.796875 | 304 | Truncated | Science & Tech. | 33.280563 |
Jay M. Pasachoff is Field Memorial Professor of Astronomy at Williams College in Massachusetts. He sent this answer:
"Trigonometric parallax--the tiny, apparent back-and-forth shifts of nearby stars caused by our changing perspective as the earth orbits the sun--can indeed be used to measure distances only to comparati... | <urn:uuid:94ed3fd6-a6fc-4508-9672-3fd165fdea7c> | 4.3125 | 825 | Knowledge Article | Science & Tech. | 34.799968 |
Carbon nanotube springs could herald a new era of energy storage
Sincethe system would store energy in a spring, it won’t lose any chargeover time and could potentially be used endlessly to store energy,without any loss in performance. The nanotube springs could store about1000 times the energy of steel springs, and of... | <urn:uuid:05317741-ef16-495e-bfc6-a9bef32c1f1d> | 3.15625 | 376 | Truncated | Science & Tech. | 23.954417 |
Jet streams are fast-moving rivers of air in the upper levels of the atmosphere. You may have heard about jet streams on television, where weathercasters track their paths on weather maps. Weather forecasters pay lots of attention to the positions of the jet streams because they are the boundary between warm and cold a... | <urn:uuid:a4971e39-600a-4d13-bfbc-9fa3e615c1c4> | 4.59375 | 587 | Knowledge Article | Science & Tech. | 44.673712 |
This section is for the benefit of those new to the growing field of applied geophysics.
The success of all geophysical methods relies on there being a measureable contrast between the physical properties of the target and those of the surrounding medium. The properties used are typically density, elasticity, magnetic ... | <urn:uuid:482ca434-cc93-4c6a-a05f-d709109119d3> | 3.21875 | 119 | Knowledge Article | Science & Tech. | 21.565 |
Fires in Zambia, Africa
Managing wildlfire is a difficult business but it is pretty much the same the world over. In order to prevent future fires you need to start small controlled fires to get rid of what wildfires can use as fuel in areas you really don't want burned. Recently personnel from the U.S. Forest Service ... | <urn:uuid:fe77c417-f863-44fd-b8b8-81a1f970f0a6> | 3.484375 | 344 | Knowledge Article | Science & Tech. | 41.121865 |
Scientific name: Shargacucullia lychnitis
Flies at night in June and July. Similar to the Mullein (S. verbasci), but typically smaller and lighter, the Mullein flying from late April to May.
The larvae of both species are also superficially similar, the Mullein having black spotting between each segment, whereas Stripe... | <urn:uuid:ee1c1a9c-7265-41bd-a4aa-ace279e066fc> | 3.1875 | 329 | Knowledge Article | Science & Tech. | 41.789326 |
#include <deque> void push_back( const TYPE& val );
The push_back() function appends val to the end of the deque. For example, the following code puts 10 integers into a deque:
deque<int> dq; for( int i = 0; i < 10; i++ ) dq.push_back( i );
When displayed, the resulting deque would look like this:
0 1 2 3 4 5 6 7 8 9
p... | <urn:uuid:b15ee3c1-f85f-4d81-9011-4bcb2da05270> | 2.71875 | 114 | Documentation | Software Dev. | 83.241364 |
statement_listEND LOOP [
LOOP implements a simple loop
construct, enabling repeated execution of the statement list,
which consists of one or more statements, each terminated by a
;) statement delimiter. The
statements within the loop are repeated until the loop is
terminated. Usually, this is accomplished with a
LEAVE... | <urn:uuid:20f65d34-823e-4e74-ac51-567b385a26b0> | 3.015625 | 176 | Documentation | Software Dev. | 36.005471 |
As a teenager I found it hard to picture the 3D structure of DNA, proteins and other molecules. Remember we didn’t have a computer then, no videos, nor 3D-pictures or 3D models.
I tried to fill the gap, by making DNA-molecules of (used) matches and colored clay, based on descriptions in dry (and dull 2D) textbooks, but... | <urn:uuid:cd8f2746-e0be-4f53-b3da-f09fe4455fef> | 3.421875 | 376 | Personal Blog | Science & Tech. | 40.362544 |
Creating and Accessing Web Services Walkthroughs
Web services provide programmatic access to application logic using standard Web protocols, such as XML and HTTP. Web services can be either stand-alone applications or sub-components of a larger Web application. Web services are accessible from just about any other kind... | <urn:uuid:31632f8c-d61e-4098-9516-7687ee0c0c50> | 2.84375 | 324 | Tutorial | Software Dev. | 38.434198 |
Marine Wildlife Encyclopedia
Roundworm Dolicholaimus marioni
It is hard to see which end is which on a roundworm, as both ends of its thin body are pointed. The body is round in cross-section and has longitudinal muscles but no circular ones. This results in a characteristic way of moving in which the body is thrashed ... | <urn:uuid:1994bb24-77ac-40fe-b11c-72126b68bf72> | 3.609375 | 150 | Knowledge Article | Science & Tech. | 43.913333 |
Pseudogenes are genes that used to have a function, but no longer do. If a gene contributes to an important function for the organism, offspring with deleterious mutations that ruin the gene will have lower fitness, and as a result won't have as many offspring, if any at all. That mutated gene will likely not go to fix... | <urn:uuid:6a1119ca-a9da-4519-b421-7807e88791d8> | 3.546875 | 1,102 | Academic Writing | Science & Tech. | 46.716962 |
EXPLANATION OF PLAN CHECK
The purpose of this plot is to check for sun danger, estimate SEPS cumulative
sun exposure time, and gauge how well the modeled magnetic field lies in the SEPS field of view.
- The absolute value of the pitch angle difference between the boresight and the sun vector is shown in the top panel. ... | <urn:uuid:b7850c01-a071-4c3b-9f07-4ea3c12fea7f> | 2.921875 | 186 | Documentation | Science & Tech. | 41.301533 |
In 2002 and 2003, over 1500 square miles of southern California burned in firestorms unequaled for over a century, the largest fires since accurate records have been kept. Because of the fires’ unprecedented size, their effects on the ecosystem were unknown and unpredictable. Over 738 square miles burned in San Diego C... | <urn:uuid:ab9cef0a-d0d2-4f29-b58f-793f491fe53f> | 3.765625 | 746 | Academic Writing | Science & Tech. | 26.198883 |
In ecology, predation describes a relationship and actions between two creatures. A predator attacks and eats its prey. Predators may or may not kill their prey before eating them. But the act of predation always causes the death of its prey and taking in the prey's body parts into the predators body. A true predator c... | <urn:uuid:fcbb6cd8-eb08-47d8-aecd-78f0dc44a9c9> | 3.671875 | 264 | Knowledge Article | Science & Tech. | 52.49105 |
Spook Hills in the Lab
Spook hills, also known as antigravity or magnetic hills, are natural places where cars in neutral gear seem to move uphill on a slightly sloping road, seemingly defying the laws of gravity. The phenomenon, found all over the world, has long kept both paranormal believers and skeptics wondering.
... | <urn:uuid:58c099e4-2104-4bf8-8b2d-a80fe779dd68> | 3.078125 | 1,568 | Knowledge Article | Science & Tech. | 23.87318 |
Mostly found in Southeast Asian countries such as Indonesia, this moth is called Attacus Atlas or Sirama-rama or kupu gajah, which translates as "elephant butterfly," after its large size. The 21-centimeter pretty moth was dying when Jhony took these photographs. The presence of Attacus Atlas, according to Javanese myt... | <urn:uuid:2464cd91-aaa4-4a62-ba73-5ee6c748f7cd> | 2.984375 | 211 | Personal Blog | Science & Tech. | 44.909849 |
#1: "#include <file.h>" does exactly the same thing as opening file.h
and copy-pasting it where the "#include <file.h>" statement is located. No more, no less.
#2: preprocessor directives are the things that start with a "#" hash sign. It can be used for preprocessor macros (you generally want to stay away from those),... | <urn:uuid:95ed6101-606d-4b26-b0cf-560c7f112ad2> | 3.640625 | 645 | Comment Section | Software Dev. | 59.262653 |
Whales: Weathering Change?
from Wayne Perryman, Biologist
Perryman is the government's leading expert on gray whale cows
and calves. He counts them each spring as they pass the California
coast at Pt.
Piedras Blancas on their way to Alaska.
Perryman reminds us, “Most of the eastern Pacific population
of gray whales fee... | <urn:uuid:08f78000-12d3-44c1-9bf0-175757472821> | 3.953125 | 657 | Knowledge Article | Science & Tech. | 56.943793 |
LRO stands for Lunar Reconnaissance Orbiter. It is a robotic spacecraft that is orbiting, or flying around, the moon. LRO will take pictures of the moon's surface. It will help NASA learn more about the moon. LRO launched in June 2009.
How Will LRO Study the Moon?
LRO has six different science instruments. The orbiter ... | <urn:uuid:a5dc9ced-68d4-40df-9d3e-c9a67fbd7a40> | 4.15625 | 916 | Knowledge Article | Science & Tech. | 72.418384 |
00:00 04 February 2009
Whales evolved from land mammals sometime between 50 and 30 million years ago. New Scientist discovers what the transition species might have looked like
Image 1 of 11
Whales evolved from split-hooved land mammals. Very little is known about the animals that first ventured into the water, so draw... | <urn:uuid:d052679f-4d16-4afe-a964-be5a66b65bc2> | 3.53125 | 149 | Truncated | Science & Tech. | 38.566522 |
|Eco-restructuring: Implications for Sustainable Development (UNU, 1998, 417 p.)|
|Part I: Restructuring resource use|
|3. Ecological process engineering: The potential of bio-processing|
To implement and accelerate these changes, a number of conditions must be met. Most of the points made in this section have already ... | <urn:uuid:a19a5f55-dbfe-47d7-a137-9d7f582a5bfb> | 2.9375 | 1,434 | Knowledge Article | Science & Tech. | 27.242174 |