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Higher Tier, Unit C2: Chemistry
Higher Tier, Unit C2: Chemistry

Selective field ionization in Li and Rb: Theory and experiment
Selective field ionization in Li and Rb: Theory and experiment

... that lead to ionization at field F, with nearly randomly varying phases on the different paths; the differing phases essentially guarantee that the interference between different paths will average to zero. In the model of Ref. 关13兴, the phases need to be retained because all of the phase difference ...
Microscopic simulations in physics - University of Illinois Urbana
Microscopic simulations in physics - University of Illinois Urbana

... interesting dynamical model. The two methods are not completely different; for example, there exist hybrid methods in which molecular dynamics are used for awhile, after which the velocities are randomized. What is not always appreciated is that one does not do a brute force integration with Monte C ...
Time-Gated Photoionization Spectroscopy Demonstrated for Cesium Rydberg Wave Packets
Time-Gated Photoionization Spectroscopy Demonstrated for Cesium Rydberg Wave Packets

... by the inverse of the energy spacing between extreme k states from the n and n 1 1 Stark manifolds. The energies where the two periods commensurate are indicated by the 6y1, 4y1, and 3y1 arrows in Fig. 3(b), corresponding to an angularyradial oscillation time of 10.5y1.8, 9.2y2.3, and 8.6y2.8 ps, re ...
AP Chemistry: Bonding Multiple Choice
AP Chemistry: Bonding Multiple Choice

CHEMISTRY
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... A mixture of substances is considered homogeneous if the mixture has the same physical and chemical properties throughout it. A homogeneous mixture is also called a solution. An element is a substance that contains only one kind of atom. A compound is a substance with two or more kinds of atoms comb ...
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PDF

... travel between the clocks. Under this condition, it is fundamentally impossible, barring superluminal propagation, to synchronize the clocks exactly. This follows from the principle of special relativity, which is built on the axiom that there exists a maximum speed --- namely, the speed of light in ...
Review Packet Honors Chemistry Kovacs
Review Packet Honors Chemistry Kovacs

Arnoldi
Arnoldi

Including Nuclear Degrees of Freedom in a Lattice Hamiltonian, P. L. Hagelstein, I. U. Chaudhary, This paper has been accepted for publication in J. Cond. Mat. Nucl. Sci. and will be published soon. An earlier version was posted on the LANL ArXiV (/0401667 [cond-mat.other] 20 Jan 2012).
Including Nuclear Degrees of Freedom in a Lattice Hamiltonian, P. L. Hagelstein, I. U. Chaudhary, This paper has been accepted for publication in J. Cond. Mat. Nucl. Sci. and will be published soon. An earlier version was posted on the LANL ArXiV (/0401667 [cond-mat.other] 20 Jan 2012).

... After analyzing many candidate transitions, we came to the conclusion that there were no physical transitions which could serve as the strongly coupled two-level transition within the model. We were optimistic in our writing about the possibility that systems described by three-level systems (or N-l ...
Phys 111 CE1 2013 Fall
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PDF: 27 pages, 167 KB - Quantum aspects of the world

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... represents an electrically neutral plasma with equal concentration of electrons, protons, and neutrons (for N = Z). Inside the nucleus the potential takes on a constant value equal to - V, = - ( 3 ~ ~ n , ) " ~ - u -1.94m,c 2. Near the edge of the nucleus there is a transition layer with a width ind ...
Introduction to Computational Chemistry
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Lecture Notes 09: Electrostatic Fields In Matter, Dielectric Materials and Their Properties
Lecture Notes 09: Electrostatic Fields In Matter, Dielectric Materials and Their Properties

... n.b. The nucleus “sees” this same electric field strength, due to the electron’s electric charge. This is a typical electric field strength internal to/in the vicinity of atoms (& molecules)!!! Compare this internal electric field strength to the electric field strengths easily / routinely ...
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Phys. Rev. Lett. 99, 200404 - Harvard Condensed Matter Theory group

... intrachain hopping J  1 to realize a system with moderate value of K far from the Mott state. At time t  0 the interchain hopping J? was abruptly decreased from a very large value to J?  0:1. Despite seemingly small size we point out that this system contains more than 106 states, which is more t ...
AP Physics - Stafford County Public Schools
AP Physics - Stafford County Public Schools

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Moles and Stoichiometry - Ms. Randall`s Science Scene
Moles and Stoichiometry - Ms. Randall`s Science Scene

... CONSERVATION of mass, energy, and charge – “what goes in must come out” • The number of ATOMS of each element must be EQUAL on BOTH SIDES of the equation. **Matter and energy cannot be created nor destroyed, only changed from one form to another ...
Fall `12 PHY 122 Homework Solutions #3 Chapter 22 Problem 38 (II
Fall `12 PHY 122 Homework Solutions #3 Chapter 22 Problem 38 (II

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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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