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Trapping beam
Trapping beam

lecture 19 (zipped power point) (update: 13Jan 04)
lecture 19 (zipped power point) (update: 13Jan 04)

... Due to the probabilistic interpretation of the matter wave, the notion of “existence” of a physical entity, at its most fundamental level, begins to deviate from our conventional wisdom  The existence of an entity is now no more be deterministic notion (e.g. it either exist or not at all) but only ...
Charge Transfer in Collisions of Ions with atoms and - Indico
Charge Transfer in Collisions of Ions with atoms and - Indico

... required to treat the dynamics of electron capture processes in a collision. When the centre of mass (CM) energy is of the order of a few hundred eV/amu or greater, the de Broglie wave-length of the nuclear motion is much less than the Bohr radius . So while, a quantum description of the internal el ...
Molecular Orbital Theory
Molecular Orbital Theory

Atomic Physics  - Teaching Commons Guide for MERLOT
Atomic Physics - Teaching Commons Guide for MERLOT

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Chemistry MCQs - Target Publications

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Chapter 6 Quantum Theory of the Hydrogen Atom

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QOLECTURE4

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Broglie and Schrodinger Atomic Model
Broglie and Schrodinger Atomic Model

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IOSR Journal of Applied Physics (IOSR-JAP)
IOSR Journal of Applied Physics (IOSR-JAP)

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Midterm 2 from Summer 2012

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The Quantum Mechanical Model of the Atom

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AP CHEMISTRY
AP CHEMISTRY

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The Kapitza - Dirac effect.
The Kapitza - Dirac effect.

... especially clear when we realise that the beams emerging from a grating are coherent with each other. This means that Kapitza and Dirac might have called their paper: 'A coherent beam - splitter for matter waves'. In optics a simple piece of coated glass constitutes nothing less then a coherent beam ...
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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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