Terms: Phase Velocity (380,000), phase velocities (64,600), electromagnetic phase velocity (2), acoustic phase velocity (103), acoustic phase velocities (24), seismic wave velocity (14,400), seismic wave velocities (12,100), ultrasonic phase velocity (270), microwave phase velocity (62),
Terms: diamagnetic materials (13,900), diamagnetic liquids (99), diamagnetic crystals (191), diamagnetic superconductors (13), diamagnetic conductor (14), diamagnetic gases (70),
Terms: diamagnetic glass (42), diamagnetic glasses (145), diamagnetic material (11,200), diamagnetic liquid (196), diamagnetic crystal (71), diamagnetic superconductor (73), diamagnetic conductor (14), diamagnetic gas (102),
Terms: conductors (22,500,000), plasmas (15,900,000), plasma conductivity (3,390), metalic conductivity (18), ceramic conductivity (113), high temperature conductivity (905),
Boolean: diamagnetic +"electron shielding" (41), diamagnetic +electron (206,000), diamagnetic +superconducting (56,500), diamagnetic +"speed of light" (12,100), diamagnetic +"electron repulsion" (586),
Terms: electron * diamagnetic (332), electron is diamagnetic (2), diamagnetic effects (1,530), diamagnetic effect (1,920),
Terms: diamagnetism * conductivity (9), conductivity * diamagnetism (17), diamagnetic * conductivity (6), conductivity * diamagnetic (26),
Hyperphysics - Magnetic properties of solids - Any conductor will show a strong diamagnetic effect in the presence of changing magnetic fields because circulating currents will be generated in the conductor to oppose the magnetic field changes. A superconductor will be a perfect diamagnet since there is no resistance to the forming of the current loops. When an external magnetic field is applied to a material, these current loops will tend to align in such a way as to oppose the applied field. This may be viewed as an atomic version of Lenz's law: induced magnetic fields tend to oppose the change which created them. Materials in which this effect is the only magnetic response are called diamagnetic. All materials are inherently diamagnetic
An electron will be repulsed by a magnetic field gradient, since it is diamagnetic.
Boolean: "magnetic gradient" +"magnetic moment" (1,020), stern gerlach +moment +force +gradient (1,320),
Terms: verdet constant (7,220), faraday effect (68,000), faraday rotation (102,000), linear birefringence (11,900), quadratic birefringence (1), magnetooptic anomaly (1),
Temperature dependence of the Verdet constant in several diamagnetic glasses
Terms: slow light (218,000), negative index of refraction (26,200),
Phase, Group, and Signal Velocity
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Incidentally, since we can contrive to make the "groups" propagate in either direction, it's not surprising that we can also make them stationary. Two identical waves propagating in opposite directions at the same speed are given by |
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Superimposing these two waves propagating (with synchronized nodes) in opposite directions yields a standing pure wave |
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Light, Phase and Group Velocities - In the general case,
Terms: group velocity (442,000), group velocities (59,700), signal velocity (19,100), signal velocities (686),
Boolean: "phase velocity" +"group velocity" (73,400),
Boolean: infrared +"phase velocity" (25,000), "x-ray" +"phase velocity" (26,400), "gamma ray" +"phase velocity" (1,900), "radio wave" +"phase velocity" (1,290), microwave +"phase velocity" (45,000),
