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Entangled Quartet
Entangled Quartet

... In a classical world, something is either a particle or a wave, so a physical system will exhibit correlations either in the particle­type or wave­type detection set­up — but not in both. However, in the quantum world that we live in, it is possible to place, for example, a single photon simultaneou ...
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... the nuclei propagate without having a collision. From above results and discussions as above mentioned, the results in Fig. 2 are outside the statistical error bars and above point of view on the role of loose neutron-halo structure on the fragmentation is reasonable. In addition we calculated also ...
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Answer Key, Problem Set 6 – complete, with explanations
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AP Chemistry - Problem Drill 03: Matter and Energy Question No. 1
AP Chemistry - Problem Drill 03: Matter and Energy Question No. 1

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A Theoretical and Experimental Approach for Correlating

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PC 4421 Lecture 1: Nuclei and Nuclear Forces
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... If we assume that a nucleon interacts with ALL the other nucleons in the nucleus then there should be A(A-1)/2 pairs of nuclei. Since the binding energy increases with the number of interactions BE ~ A(A-1)/2. Then BE/A would be linear, which it is but only roughly up to around A~10. The binding ene ...
arXiv:0803.3834v2 [quant-ph] 26 May 2009
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... We construct any value of angular momentum by adding several spin 1/2 particles. We show how the vector model works for two spin 1/2 particles. The sum of two spin 1/2 particles gives a total angular momentum of j = 1 or j = 0. Take first the case of the state with j = 1 and m = 1. The state is repr ...
Insulators and Conductors in Equilibrium
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... Why must there be another force counteracting the acceleration due to an electric field inside a conductor? If there was not another force, electrons would accelerate to the speed of light if we applied an electric field. The extra force comes from scattering off the charged lattice ions. ...


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Chemistry 120

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Final Exam

Nickel(II) cis- and trans-Dimethyl Complexes of
Nickel(II) cis- and trans-Dimethyl Complexes of

... system and a single ethylene bridge carbon signal at δ 48.29. The apparent mirror plane implied for 1 in the solution NMR spectra is attributed to a rocking libration about the C(11)-C(12) vector. The 1H NMR spectrum of 1 in toluene-d8 at -80 °C did not result in appreciable broadening of the two si ...
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Atomic theory



In chemistry and physics, atomic theory is a scientific theory of the nature of matter, which states that matter is composed of discrete units called atoms. It began as a philosophical concept in ancient Greece and entered the scientific mainstream in the early 19th century when discoveries in the field of chemistry showed that matter did indeed behave as if it were made up of atoms.The word atom comes from the Ancient Greek adjective atomos, meaning ""uncuttable"". 19th century chemists began using the term in connection with the growing number of irreducible chemical elements. While seemingly apropos, around the turn of the 20th century, through various experiments with electromagnetism and radioactivity, physicists discovered that the so-called ""uncuttable atom"" was actually a conglomerate of various subatomic particles (chiefly, electrons, protons and neutrons) which can exist separately from each other. In fact, in certain extreme environments, such as neutron stars, extreme temperature and pressure prevents atoms from existing at all. Since atoms were found to be divisible, physicists later invented the term ""elementary particles"" to describe the ""uncuttable"", though not indestructible, parts of an atom. The field of science which studies subatomic particles is particle physics, and it is in this field that physicists hope to discover the true fundamental nature of matter.
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