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fdc6ae65a2a623df | Q: What are complex numbers used for?
Physicist: If you’ve ever had to do square roots you’ve probably come up against the problem of taking the square root of a negative number. If you restrict your attention only to real numbers (0,1, -17, \pi, √2, …, any number you can think of), then there’s no way to take the sq... |
54712d997e951f05 | From the Greek meaning 'heavy with wine'
A blog devoted to science and reason
Written after a glass or two of Pinot Noir.
Sunday, December 9, 2012
Twas the Night Before What?
CREDIT: unknown
Twas the Night Before Newtonmas.
Twas the night before Newtonmas, when all through the house
Not a field was changing, not ... |
846fb6e7a9b5c904 | Skip to main content
Select Source:
The German physicist Max Planck (18581947) introduced the quantum of action h (Planck's constant) into physics in his successful theory of blackbody radiation in 1900 and thus started quantum theory, one of several revolutionary discoveries that occurred in physics at the turn of ... |
5012597495d7250a | Séminaires de l’année 2013
Séminaire de la Fédération PHYSTAT-SUD : Ludwik Leibler
Ludwik Leibler, Matière Molle et Chimie, ESPCI, Paris
Glass-workers shape marvelous objects without using moulds or precise temperature control because glass is a unique material that transforms from liquid to solid in a very progres... |
536f39462760551d | Intro to Quantum Mechanics
This page is intended to give an ordinary person a brief overview of the importance and wonder of quantum mechanics. Unfortunately, most people believe you need the mind of Einstein in order to understand QM so they give up on it entirely. (Interesting side note: Einstein didn't believe... |
e236379a3963883b | Thursday, January 31, 2008
China's Current Submarine Threat
UPDATE [No Coincidence]: February 01, 2008 - Third Middle East submarine cable damaged - Undersea cable operator FLAG is reporting that a third cable in the region has been severed. The FALCON cable was cut at a point around 56kms from Dubai, just before 6am... |
d2a99e79c2f7d9b2 | Take the 2-minute tour ×
Does anybody know if there exists a mathematical explanation of Mendeleev table in quantum mechanics? In some textbooks (for example in "F.A.Berezin, M.A.Shubin. The Schrödinger Equation") the authors present quantum mechanics as an axiomatic system, so one could expect that there is a deducti... |
fb272ef704e341c3 | Notes to Many-Worlds Interpretation of Quantum Mechanics
1. The mathematical part of the MWI, (i), yields less than mathematical parts of some other theories such as, e.g., Bohmian mechanics. Indeed, our experience is consistent with the MWI, but it does not follow from its mathematical part. The Schrödinger equation ... |
658573951046f1d2 | complete surface
Computational chemistry
The methods employed cover both static and dynamic situations. In all cases the computer time and other resources (such as memory and disk space) increase rapidly with the size of the system being studied. That system can be a single molecule, a group of molecules, or a soli... |
ece55164d997770d | Critical Review of "A New Kind of Science"
12 July 2002
With extreme hubris, Wolfram has titled his new book on cellular automata "A New Kind of Science".
But it's not new.
And it's not science.
Solo Discovery?
The main text of the book gives the strong impression that everything pictured and described in the boo... |
e7458f3d89ef9f03 | evolution equation
An evolution equation is an equation of the form
tf=Lf\partial_t f = L f
where t represents the partial derivative with respect to time, L is a differential operator and f is usually assumed to be an element of some topological vector space. Examples are the Schrödinger equation and the Fokker-P... |
0c4715ced3681fbf | Statistical mechanics
From Wikipedia, the free encyclopedia
(Redirected from Statistical thermodynamics)
Jump to: navigation, search
Statistical mechanics is a branch of mathematical physics that studies, using probability theory, the average behaviour of a mechanical system where the state of the system is uncerta... |
51c8905baae72652 | Antonie J.W.G. Visser1,2 and Olaf J. Rolinski2
1Laboratory of Biochemistry, Microspectroscopy Centre
Wageningen University, P.O. Box 8128
6700 ET Wageningen, The Netherlands
2Department of Physics, University of Strathclyde
Scottish Universities Physics Alliance, Photophysics Group
Glasgow G4 0NG, UK
Basic photophy... |
9bace36645060085 | Jump to navigation Jump to search
3D (left and center) and 2D (right) representations of the terpenoid molecule atisane.
In chemistry, a molecule is defined as a sufficiently stable electrically neutral group of at least two atoms in a definite arrangement held together by strong chemical bonds.[1][2] In organic che... |
d5f75859cb03ef81 | Green's functions
Lecture Notes on Green's Functions for lecture given on St. Patrick's day, so written in Green naturally.
Some of the most important equations in physics can be solved by constructing a beast with a curious set of properties, called a Green’s function. This post contains some interesting nuggets fr... |
ee2c12c3e1b42ec0 | Einstein’s Revenge
“Like an electron becomes a muon or whatever?”
“How’s that?”
“OK, that’s odd but how is it weird?”
“Wait, what?”
“The masses oscillate, too?”
“And on the theory side?”
“Oh, yeah? Let’s hear it.”
“Yeah, so?”
“I could do worse.”Neutrino swirl around Einstein
~~ Rich Olcott
P... |
b1e02e7fee717935 | Entanglement and quantum secrecy
June 16, 2017. A presentation for the Melbourne Maths and Science Meetup on entanglement and quantum key distribution. Although the talk was pitched at a general audience, the notes here are more technical.
1. Quantum Mechanics
We’re going to start our journey towards entanglement wi... |
1cdecfbf71fe3c4b | CRC 1173
Project A12 • Dynamics of the Gross–Pitaevskii equation
Principal investigators
JProf. Dr. Xian Liao (1/2020 - )
Prof. Dr. Guido Schneider (1/2020 - )
Project summary
The Gross–Pitaevskii equations (especially the nonlinear Schrödinger equations) arise naturally in numerous physical fields, such as Bo... |
a1f690d81f158188 | Magic Number (physics)
Get Magic Number Physics essential facts below. View Videos or join the Magic Number Physics discussion. Add Magic Number Physics to your PopFlock.com topic list for future reference or share this resource on social media.
Magic Number Physics
Graph of isotope stability, with some of the magic nu... |
e0410575be07f4d6 | Many Worlds? The Measurement Problem
In the last article on Many Worlds, we saw that quantum mechanics is a weird and counterintuitive theory of how the world works on the microscopic level. Despite its strange framework however, experimental evidence weighs convincingly on its side, so it is a theory that we should ... |
b2a151238a11b30d | Wolfram Blog
Michael Trott
An Exact Value for the Planck Constant: Why Reaching It Took 100 Years
May 19, 2016 — Michael Trott, Chief Scientist, Wolfram|Alpha Scientific Content
Blog communicated on behalf of Jean-Charles de Borda.
Some thoughts for World Metrology Day 2016
Please allow me to introduce myself
I’m ... |
af4bcd2e03fd3e3d | Print | Save
Estimating Undergraduate Bilingual
Scientific Literacy in Sweden
John Airey
University of Kalmar (Sweden)
This paper reports ongoing research results from the first Swedish study to be carried out into the relationship between the teaching language and disciplinary learning at university level. The... |
01b4b878b0f02c28 | Telechargé par Abdelmouid Fillalli
Six Not-So-Easy Pieces Einsteins Relativity, Symmetry, and Space-Time by Richard P. Feynman, Robert B. Leighton, Matthew Sands (
“In these lectures, everything you’ve ever heard about Feynman’s wit and
revolutionized the teaching of physics around the world. Six Not-So-Easy Pieces, ... |
70c1714a18e58748 | Maximizing Performance under a Power Constraint on Modern Multicore Systems
DOI: 10.4236/jcc.2019.77021 PDF HTML XML 225 Downloads 491 Views Citations
Energy efficiency and energy-proportional computing have become a central focus in modern supercomputers. These supercomputers should provide high through... |
955f0b643ff63dd0 |
The special theory of relativity implies that only particles with zero rest mass may travel at the speed of light. Tachyons, particles whose speed exceeds that of light, have been hypothesized, but their existence would violate causality, and the consensus of physicists is that they cannot exist. On the other hand, w... |
e96f2de628598b84 | a repository of mathematical know-how
The tensor power trick
Quick description
General discussion
This trick works best when using techniques which are "dimension-independent" (or depend only weakly (e.g. polynomially) on the ambient dimension M). On the other hand, the constant C is allowed to depend on other par... |
cd5328a8b958bb7f | Correspondence principle
From Wikipedia, the free encyclopedia
Jump to: navigation, search
This article discusses quantum theory and relativity. For other uses, see Correspondence principle (disambiguation).
In physics, the correspondence principle states that the behavior of systems described by the theory of quantu... |
a4db98f3bad97b39 | Matrix Methods in Quantum Mechanics
One of the most fundamental concepts in quantum theory lies in the idea that "xp" does not equal "px". We have seen elsewhere how pure numbers cannot behave in this fashion, but operators can. This is why we needed to alter our understanding of these physical properties from being r... |
ac7b6b52b32ceafe | Monday, September 30, 2019
Shana Tova, People! Be Careful!
Here's wishing a happy new year to my Jewish readers. I have always been lucky to have Jewish friends and neighbors, and we would often double up on holidays- we would celebrate Hanukkah with them, they would come over for Christmas Eve. I am still flabbergas... |
13fc024c08c265b1 | From Gender to Gleason
… or, The Case of Adam Becker’s What Is Real? (2018).
It is easy to argue that the founders of quantum mechanics made statements which are opaque and confusing. It is fair to say that their philosophical takes on the subject are not infrequently unsatisfying. We can all use reminders that human... |
8ed60d5186115384 | Skip to main content
Chemistry LibreTexts
Electrostatic Potential maps
• Page ID
• Electrostatic potential maps, also known as electrostatic potential energy maps, or molecular electrical potential surfaces, illustrate the charge distributions of molecules three dimensionally. These maps allow us to visualize var... |
7b281717e46c8e08 | Numerical solution of PDE:s, Part 8: Complex Ginzburg-Landau Equation
In the previous numerical solution posts, I described linear equations like diffusion equation and the Schrödinger equation, and how they can be solved by (implicit or explicit) finite differencing. The idea of the implicit methods was to convert th... |
052fe059376b56a7 | Second Quantization: The Source of the Difference in Particle Statistics for Bosons and Fermions
San José State University
Thayer Watkins
Silicon Valley
& Tornado Alley
Second Quantization:
The Source of the Difference in Particle
Statistics for Bosons and Fermions
Bosons and Fermions
Bosons are particles for whi... |
9a756e2c47a890d6 | Q&A with Colleen Bertoni, the ALCF’s Margaret Butler Fellow
Colleen Bertoni
In 2017, Colleen Bertoni, a recent PhD graduate from Iowa State University, joined the Argonne Leadership Computing Facility (ALCF) as the recipient of its Margaret Butler Fellowship in Computational Science.
Now entering the second year of ... |
8ab5db39ad284e97 | Deception by top universities and journals-3 .
Criticize University and journals.
Top New
Gravitational lens, Einstein is false.
[ Light is bent by "air refraction" more than gravity ! ]
(E-1) Einstein gravity theory is nonsense. is bent ?
Einstein general relativity claims that light is bent by gravity.... |
d5d8d89e477c76a7 |
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Please help promote PhysicsOverflow ads elsewhere if you like it.
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8e29e6b78a41d06e | Coherent driving and freezing of bosonic matter wave in an optical Lieb lattice
See allHide authors and affiliations
Science Advances 20 Nov 2015:
Vol. 1, no. 10, e1500854
DOI: 10.1126/sciadv.1500854
Although kinetic energy of a massive particle generally has quadratic dependence on its momentum, a flat, dispersio... |
d5660f10fcdf56f7 | The “Scientific World-view” Needs an Update
At the end of each year, I take the liberty of speculating on a scientific subject beyond the usual scope of this blog. This one is the broadest yet.
— John Archibald Wheeler
— Mrs Haine, my 6th Grade teacher (1961)
erroneously attributed to Mark Twain
The community of s... |
e85b3dd4010bbc53 | Skip to content
Starts With A Bang
Can just one equation describe the entire history of the universe?
As the first Friedmann equation celebrates its 99th anniversary, it remains the one equation to describe our entire universe.
Friedmann equation
An illustration of our cosmic history, from the Big Bang until the pres... |
9ae095342d5030af | Subscribe to receive notifications of new posts:
Subscription confirmed. Thank you for subscribing!
The quantum solace and spectre
Blogpost about the current trends on quantum and post-quantum algorithms.
Not only is the universe stranger than we think, but it is stranger than we can think of
Werner Heisenberg
Eve... |
ce20969bdf49f7ab | • by Arpan Dey
The main objective of the present paper is to investigate the de Broglie relation [1] and determine its consequences on the time-independent Schrödinger equation [2], and whether the results are valid in terms of accommodating relativistic corrections in the Schrödinger equation. The de Broglie relatio... |
3b9dfe962d270261 | (Cross-posted from my blog with light edits)
Related to: Which Basis is More Fundamental?
Epistemic status: Not an expert on physics, please point out any mistakes.
In physics, there appears to be a deep duality between position and momentum, in the sense that one can switch between position-based and momentum-based... |
a3d4ace42677a14b | Weekly Papers on Quantum Foundations (40)
Authors: A. S. Sanz
Since its inception Bohmian mechanics has been generally regarded as a hidden-variable theory aimed at providing an objective description of quantum phenomena. To date, this rather narrow conception of Bohm’s proposal has caused it more rejection than acce... |
888927eab4458a2c | Water molecules in ultrashort intense laser fields
Full text
Water molecules in ultrashort intense laser fields
Simon Petretti
, Alejandro Saenz
, Alberto Castro
, Piero Decleva
AG Moderne Optik, Institut für Physik, Humboldt-Universität zu Berlin, Newtonstr. 15, D-12489 Berlin, Germany
Institute for Bioc... |
78af760f9ce7ffb8 | viernes, 18 de noviembre de 2011
(review about the book here:
How Matter becomes Imagination
Basic 2000
The Darwinian Perspective
Our brief review of the vast field of neurological and neurophysiological evidence in this and the previous chapter leads to the following conclusions.
First, conscious processes ar... |
5280acb6bfa06a0e | I read about how to solve the Schrödinger equation for the quantum harmonic oscillator in one dimension. It started with the Schrödinger equation, $$ \frac{p^2}{2m}\psi(x, t)+\frac{1}{2}m\omega^2x^2\psi(x, t)=\hat{E}\psi(x, t) $$ It makes sense to me; that looks like energy conservation. Putting differential equations ... |
a988ff18aeb288de | pgtruspace's blog
about things that interest me.
Category Archives: experiment
Navy Patent to modify Mass / Inertia
Patent for a craft using an Inertial Mass Reduction Device patent number 10,144,532B2
It was brought to my attention that a researcher for the U.S. Navy had patented a device for the reduction of m... |
65055f3a170ad505 | A trek through Physics
©Fernando Caracena 2013
by Fernando Caracena, PhD
What is this?
This is a walkabout through the land of physics. It is an adventurous trek. In going back through the various concepts, I find that all I learned about physics is still there in my mind; but when I dredge it up out of my memory, ... |
818c3567dcf54a2d | I don't know if this is really applicable but I want to add a custom force (say, $F(x,y,z)$) to some atoms in my geometry optimization. Is there any way to add such forces to the DFT or molecular mechanics calculations? (preferably GAMESS or Gaussian for QC or Avogadro for MM).
It can be also done as Molecular Mechani... |
1f6af3b56450896e | Quantum mechanics
From Wikipedia, the free encyclopedia
(Redirected from Quantum physics)
Jump to navigation Jump to search
Quantum mechanics (QM) is the part of physics that tells how the things that make up atoms work. QM also tells how electromagnetic waves (like light) work. It is also called "quantum physics" or... |
e0feab3e3fae3558 | Ground state
From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Energy levels for an electron in an atom: ground state and excited states. After absorbing energy, an electron may jump from the ground state to a higher-energy excited state.
The ground state of a quantum-mechanical system is its lo... |
ebf98ec347990d96 | 2100: Models of the Atom
Explain xkcd: It's 'cause you're dumb.
Revision as of 08:45, 30 January 2019 by (talk)
Jump to: navigation, search
Models of the Atom
J.J. Thompson won a Nobel Prize for his work in electricity in gases, but was unfairly passed over for his "An atom is plum pudding, and plum pudding is MADE of... |
13ff1678728ae5b8 | "Classical" Lagrangian formulation of quantum field theory | PhysicsOverflow
• Register
PhysicsOverflow is a next-generation academic platform for physicists and astronomers, including a community peer review system and a postgraduate-level discussion forum analogous to MathOverflow.
Welcome to PhysicsOverflow! Ph... |
b8234a546df8c191 | Sunday, September 24, 2006 ... Deutsch/Español/Related posts from blogosphere
Wavefunctions and hydrodynamics: crackpots vs. rational thinking
This is also the case of the recent preprint
What did Wallstrom point out? He looked at the theories in which
• abs(psi)^2
is interpreted as a density of some liquid,... |
24e45937693957b5 | Periodic systems of small molecules
From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Periodic systems of molecules are charts of molecules similar to the periodic table of the elements. Construction of such charts was initiated in the early 20th century and is still ongoing.
It is commonly bel... |
c788bf64a7132a0b | Saturday, December 31, 2005 ... Deutsch/Español/Related posts from blogosphere
Testing E=mc2 for centuries
Chad Orzel seems to disagree with my comments about the interplay between the theory and experiment in physics. That's too bad because I am convinced that a person who has at least a rudimentary knowledge about ... |
c393e540d823e0b4 | Does Quantum Physics Make it Easier to Believe in God?
By Stephen M. Barr
Not in any direct way. That is, it doesn’t provide an argument for the existence of God. But it does so indirectly, by providing an argument against the philosophy called materialism (or “physicalism”), which is the main intellectual opponent ... |
3d8582343d9b395b | Fundamental Physics 2013: What is the Big Picture?
2013 has been a great year for viXra. We already have more than 2000 new papers taking the total to over 6000. Many of them are about physics but other areas are also well covered. The range is bigger and better than ever and could never be summarised, so as the year ... |
e4cb96fc52867518 | Wednesday, June 20, 2012
Heroes, Power and Obscurity by Suppression
There are a few people in a century that think so far outside the box that if positioned right can change the operating basis of the entire world. The significance of discoveries can be as great as Nikola Tesla with Alternating current (which we all ... |
e9eb56456e9400ee | Polymer physics
From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Polymer physics is the field of physics that studies polymers, their fluctuations, mechanical properties, as well as the kinetics of reactions involving degradation and polymerisation of polymers and monomers respectively.[1][2][3... |
11cfc8de1c6640c8 | Inverse scattering transform and optical communications
Inverse Scattering Transform is a powerful method to exactly solve nonlinear partial differential equations, including the nonlinear Schrödinger equation which is the master model describing light propagation in optical fibers. Currently most of the internet data... |
7050cf5f43e75600 | IN-DEPTH | Logic takes on the physics paradoxes: Review essay on The Spacetime Model: A Theory of Everything by Jacky Jerôme
The history of science is the record of the achievements of individuals who…met with indifference or even open hostility on the part of their contemporaries…A new idea is precisely an idea that... |
9e38bcdf9e2af041 | Inorganic Chemistry/Chemical Bonding/Molecular orbital theory
From Wikibooks, open books for an open world
Jump to: navigation, search
In chemistry, molecular orbital theory (MO theory) is a method for determining molecular structure in which electrons are not assigned to individual bonds between atoms, but are treat... |
d61cc83ee35a7a5d | "Knowledge" is the ninth episode in the second season of Teen Titans Go!, and the 61st overall episode of the series.
Starfire is tired of not being able to fit in with the other Titans, so she asks Raven to help her to learn more about Earth culture. Raven casts a spell to give Starfire all human knowledge there is,... |
2573debade2a0bf4 | Spin clean-up method brings practical quantum computers closer to reality
Osaka City University develops a quantum algorithm that removes pesky spin contaminants from chemical calculations on quantum computers.
Credit: Kenji Sugisaki, Kazunobu Sato and Takeji Takui, Osaka City University
Osaka, Japan. Quantum comp... |
7b5173a76724d813 | Rovibrational interactions in linear triatomic molecules:a theoretical study in curvilinear vibrational coordinatesDedicated to Professor Małgorzata Witko on the occasion of her 60th birthday
Rovibrational interactions in linear triatomic molecules:
a theoretical study in curvilinear vibrational coordinatesthanks: Ded... |
93fa43118c4930a1 | Holstein–Herring method
From formulasearchengine
Jump to navigation Jump to search
The Holstein–Herring method,[1][2][3][4] also called the Surface Integral method,[5][6] also called Smirnov's method[7] is an effective means of getting the exchange energy splittings of asymptotically degenerate energy states in molec... |
2ecb1c059cf061a4 | Jun 07, 2019
Nuclear-physics and quantum-chemistry theoreticians join forces to accurately predict the properties of the atomic nucleus
Predicting properties of, e.g., molecules or atomic nuclei from first principles requires to solve the Schrödinger equation with high accuracy. The computing cost to find exact soluti... |
415af1a0afd181fc | My watch list
Quantum electrodynamics
Quantum mechanics
\hat{H}|\psi\rangle = i\hbar\frac{d}{dt}|\psi\rangle
Introduction to...
Mathematical formulation of...
Advanced theories
Quantum field theory
Wightman axioms
Quantum electrodynamics
Quantum chromodynamics
Quantum gravity
Feynman diagram
This box: view tal... |
0a796362eeea0bab |
On the dependence of the wave function of a bound nucleon on its momentum and the EMC effect
C. Ciofi degli Atti Department of Physics
University of Perugia and INFN Sezione di Perugia,
Via A. Pascoli, I-06123 Perugia, Italy
L. L. Frankfurt School of Physics and Astronomy, Tel Aviv University, 69978 Tel Aviv, Isr... |
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b99d3424d2cba8eb | Essays on Science and SocietySPORE* Series Winner
Computational Experiments for Science Education
See allHide authors and affiliations
Science 24 Jun 2011:
Vol. 332, Issue 6037, pp. 1516-1517
DOI: 10.1126/science.1197314
Computational physics, which provides digital representations of natural phenomena by solving ... |
2479db737bde1a51 | 10 The Aharonov–Bohm effect
Consider once more the two-slit experiment with electrons. What happens if we place a thin, long solenoid right behind (or right in front of) the slit plate, between the two slits. If no current is flowing in the solenoid, we observe the usual interference pattern. But if a current is flowi... |
d12a741e90650617 | XRFWin controls an x-ray spectrometer to acquire x-ray intensity as a function of energy or wavelength and will determine the composition, thickness or multi-layer thickness of a specimen using qualitative and quantitative analysis.
XRFWin is a comprehensive software package for performing qualitative and quantitativ... |
a82eaf2a66e63b38 | Update on The Energies of the LBP
by Dr. Georgi Stankov, December 27, 2011, copyright 2011
The last discussion on the real cosmic energies behind the LBP and the role of the sexual energy “kundalini“, respectively the lack of any role of this low frequency energy in this process, revealed that there is a great need... |
3fcd9e845ac34a0a | Why did Nature Invent Spin?
I think this issue receives too little attention. Usually, it is said that spin is a consequence of the Dirac equation and thus, something that follows necessarily from relativity and quantum mechanics. Let us have a brief look at the argument. Schrödinger’s non-relativistic equation is .
... |
840eae2fe8b97870 | Born–Oppenheimer approximation
From Wikipedia, the free encyclopedia
(Redirected from Born-Oppenheimer Approximation)
Jump to: navigation, search
Not to be confused with the Born approximation.
In quantum chemistry and molecular physics, the computation of the energy and the wavefunction of an average-size molecule... |
b3ce99190f6b9cc3 | Hartree–Fock method
From Wikipedia, the free encyclopedia
(Redirected from Hartree–Fock)
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In computational physics and chemistry, the Hartree–Fock (HF) method is a method of approximation for the determination of the wave function and the energy of a quantum many-body system in a stationa... |
6b2ce55bba95705a | Normal mode
From Wikipedia, the free encyclopedia
(Redirected from Mode shape)
Jump to: navigation, search
For other types of mode, see Mode (disambiguation).
Vibration of a single normal mode of a circular disc with a pinned boundary condition along the entire outer edge. See other modes.
A flash photo of cup of bl... |
55978bafc2baa7f1 | Quantum state
From Wikipedia, the free encyclopedia
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In quantum physics, quantum state refers to the state of a quantum system. A quantum state is given as a vector in a Hilbert space, called the state vector. For example, when dealing with the energy spectrum of the electron in a hydrogen ... |
895d0482c4d88988 | Sign up ×
When we solve the Schrödinger equation on an infinite domain with a given potential $U$, much of the time the lowest possible energy for a solution corresponds to a non-zero energy. For example, for the simple harmonic oscillator with frequency $\omega$, the possible energies are $\hbar\omega(n+\frac12)$ for... |
ce6c90f2c78f2a3d | Take the 2-minute tour ×
At school I really struggled to understand the concept of imaginary numbers. My teacher told us that an imaginary number is a number which has something to do with the square root of -1. When I tried to calculate the square root of -1 on my calculator, it gave me an error. To this day I do not... |
c75247bf59e87f71 | General relativity
From Wikipedia, the free encyclopedia
(Redirected from Spatial curvature)
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For a more accessible and less technical introduction to this topic, see Introduction to general relativity.
For the book by Robert Wald, see General Relativity (book).
A simulated black hole of 1... |
c26f9ff33b485f4e | Chem1 Atomic structure and the periodic table
The quantum atom
Contents of this page
The wave function and its physical meaning
Why doesn't the electron fall into the nucleus?
Quantum numbers of electrons in atoms
Electron spin and the Pauli exclusion principle
What you should know
concept map
Artist Kenneth ... |
22eeb4803f3fe796 | a state of dance
founded by michael klien and davide terlingo
A Proposal for Developing Quantum Computing in Software
by Alan N. Shapiro and Alexis Clancy
(with special thanks to Jeffrey Gormly for important contributions)
[EDITORIAL NOTE: We are pleased to publish this ground-breaking paper by two of our regular ... |
ccdad12194f95176 | Research Papers
Virtually all my research, which is still continuing actively, has been based on the conviction that time, motion and size are all relative. I call this the relational approach. My main collaborators for the earlier work were Bruno Bertotti, Niall Ó Murchadha, Edward Anderson, Brendan Foster, and Bryan... |
f3b99da0cc0a5fbb | Thursday, March 22, 2012
Science and religion
The relationship between science and religion has been a topic of discussion recently. New Scientist has articles about the attempts of scientists to explain spirituality and religion (see for instance this and this). Also Bee has written about this under the title What c... |
907cac7804512208 | Physics (PHY)
Kara Beauchamp, Lyle Lichty (chair), Derin Sherman
Major: CSC 140 (Foundations of Computer Science), MAT 120 (Calculus of a Single Variable Part II) or 121 (Calculus of a Single Variable), 122 (Calculus of Several Variables), 221 (Linear Algebra), and 236 (Differential Equations); PHY 161, 162, 263, 302... |
008b3db9d715eed3 | Take the 2-minute tour ×
In mathematical derivations of physical identities, it is often more or less implicitly assumed that functions are well behaved. One example are the Maxwell identities in thermodynamics which assume that the order of partial derivatives of the thermodynamic potentials is irrelevant so one can ... |
35f66900d20aefb0 | Determining the Radial Part of a Wave Function - dummies
Determining the Radial Part of a Wave Function
By Steven Holzner
In quantum physics, you can determine the radial part of a wave function when you work on problems that have a central potential. With central potential problems, you’re able to separate the wave... |
74f39820774e0304 | Open main menu
Degenerate energy levels
(Redirected from Degenerate energy level)
In quantum mechanics, an energy level is degenerate if it corresponds to two or more different measurable states of a quantum system. Conversely, two or more different states of a quantum mechanical system are said to be degenerate i... |
42c5b70ce72aabcf | 2000 atoms in two places at once: A new record in quantum superposition
2000 atoms in two places at once--A new record of quantum superposition
Artistic illustration of the delocalization of the massive molecules used in the experiment. Credit: © Yaakov Fein, Universität Wien
The quantum superposition principle has b... |
58253c45f815c3a7 | Why you should consider buying Bitcoin right now (Jan 2015) if you have high risk tolerance 2015-01-13T20:02:20.732Z · score: 4 (23 votes)
Ethereum creator Vitalik Buterin mentions LessWrong, discusses the various camps and ideologies in Cryptocurrency development 2014-12-31T22:23:09.227Z · score: 6 (7 votes)
An explan... |
fe7bf7747d1f0ba7 | How to cure cold sores inside mouth
Author: admin, 11.07.2015. Category: Herpes Cure
It might be the reason for a lot of diseases such as genital herpes, how to cure cold sores inside mouth fever blisters, chickenpox and shingles. The intake of silica acts as a supportive treatment for inflammation of the middle ear.... |
eac15fe93780439f | Field of Science
Chemistry is not harder than other sciences...just different.
A well known physicist turned venture capitalist asked on Twitter the other day why people seem to have a harder time understanding chemistry rather than physics or biology. Chemistry is by no means harder to understand than physics or bio... |
3bc50ad13e546a1c | The Full Wiki
Electron: Wikis
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A glass tube containing a glowing green electron beam
Experiments with a Crookes tube first demonstrated the particle nature of electrons. In this illustration... |
c897ac33c626263c | The Most Important Equation In The Universe
An illustration of our cosmic history, from the Big Bang until the present, within the context of the expanding Universe. The first Friedmann equation describes all of these epochs, from inflation to the Big Bang to the present and far into the future, perfectly accurately, ... |
d3232b8f094de166 | Friday, March 29, 2019
Proving the Periodic Table
The year 2019 is the International Year of the Periodic Table celebrating the 150th anniversary of Mendeleev's discovery. This prompts me to report on something that I learned in recent years when co-teaching "Mathematical Quantum Mechanics" with mathematicians in par... |
45f6f767f3b0ec50 | Thursday, May 22, 2014
Border Crossing
The day toughens when it bends with mirrors. The border is completely bullets. How do we break on through to the other side? If it rains a holiday on the sculpture we will come to our whiskers in pride and ribbons. We will cross at dawn. Your mind seems bruised with surprise. We... |
04bf5ff2708a1729 | Main Introduction to Quantum Mechanics (Corrected)
Introduction to Quantum Mechanics (Corrected)
ISBN 13: 978-1107189638
File: PDF, 25.22 MB
Proofs of a Conspiracy
Year: 2012
Language: english
File: EPUB, 393 KB
How Sweden Became Multicultural
Year: 2017
Language: english
File: AZW, 488 KB
Third edition
Changes a... |
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