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MORE PHYSICSPHYSICS DICTIONARY TERMS
redshiftThe displacement of spectrum lines, as determined by the increasing distance between, and the relative velocity of, the observer and a light source, causing the lines to move toward the red portion of the spectrum. It is used in astrophysics to...
de Broglie wavelengthThe concept of the de Broglie wavelength exploits the wave-particle duality of quantum physics by associating all matter (of...
quasi-linear theoryThe first nonlinear theory in plasma physics that details the time and space evolution of plasma wave instability from a...
momentum transferIn physics, momentum transfer is the amount of momentum transferred from one particle to another during particle collision...
scintillation1. The variation in intensity of a light beam as it travels through the atmosphere. 2. In radiation physics, a light flash...
opticsThe study of light – optics is the area of physics that deals with the generation, propagation, and interaction of...
octaveThe interval between two points, where the frequency at the second point is twice the frequency of the first. In physics and...
single-molecule spectroscopyAn advanced technique that allows the detection of one molecule within a crystal or a cell through optical excitation....
plasma physicsThe study of highly ionized gases. Many phenomena not exhibited by uncharged gases are associated with plasma physics.
laser coolingA process and method by which manipulation and orientation of a given number of directed laser beams decreases the motion of...
correspondence theoryBohr's formulation that every new theoretical principle must correspond to the salient classical predecessor. The principle...
multipletA group of related lines that represent transitions between two spectroscopic terms, each of which may be complex. Also in...
x-ray opticsThe study of the physics of x-rays, where the x-rays exhibit properties similar to those of lightwaves. Also called Roentgen...
absorbanceThe natural log of the ratio of absorbed intensity over the total intensity which gives a constant value assuming a stable...
geometric opticsA field of physics that deals with light as if it truly were composed of rays diverging in various directions from the...
acousto-opticsDiscipline within optical physics that addresses sound vibration, phonon effects and their influencing behavior within...
kinematicsThat portion of physics concerned with motion in the abstract, such as of points or space figures, and separated from its...
polaritonIn solid-state physics, a quantum of the coupled-mode motion resulting from the interaction between a photon and a phonon.
electro-optics1. The branch of physics that deals with the use of electrical energy to create or manipulate light waves, generally by...

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