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Particle Physics - Atomic physics department
Particle Physics - Atomic physics department

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Work, Power & Energy

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... Catalog Description including pre- and co-requisites: supporting data required for grade prerequisite of ‘C’ or higher. ...
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... functions at k points that are very close together will be almost identical, hence it is possible to represent the electronic wave functions over a region of k space by the wave functions at a single k point. ...
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... 0 K to the temperature of the gas. Calorimetry, like any thermodynamic measurement, yields a difference, and thus gives ∆S rather than absolute entropy values. Unlike the corresponding energy or enthalpy, entropy is normally set equal to zero at 0 K in accord with the third law of thermodynamics the ...
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... a collection of related objects and interactions. the masses and velocities of a collection of objects. C. the masses and velocities of a collection of objects, and the forces that act on them. D. the objects within a volume that you are interested in 2. A large bird with a mass of 1.0 kg is flying ...
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... During storage, most energy harvesting systems are not harvesting enough energy to sustain perpetual operation. If the system is allowed to run during storage, all energy will eventually be depleted, potentially over-discharging and causing damage to sensitive energy storage elements such as a thin- ...
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... cohesion in them is negligible. It is the London dipole-dipole interactions between the Rydberg atoms that yield significant cohesion. This consists of two principal terms: one is a repulsive overlap term; and the other an attractive dipole-dipole term (both are induced dipoles). These terms differ ...
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... mechanical. Note that if factors of ~ and c are made explicit in Eqn. (3), our dimensional analysis is consistent with that microscopic calculation. As seen from Eqn. (4), the BICEP result suggests a scale of inflation of Einflation ≈ 2 × 1016 GeV. Remarkably, that same scale appears in quite a diff ...
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gravitational potential energy

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Eigenstate thermalization hypothesis

The Eigenstate Thermalization Hypothesis (or ETH) is a set of ideas which purports to explain when and why an isolated quantum mechanical system can be accurately described using equilibrium statistical mechanics. In particular, it is devoted to understanding how systems which are initially prepared in far-from-equilibrium states can evolve in time to a state which appears to be in thermal equilibrium. The phrase ""eigenstate thermalization"" was first coined by Mark Srednicki in 1994, after similar ideas had been introduced by Josh Deutsch in 1991. The principal philosophy underlying the eigenstate thermalization hypothesis is that instead of explaining the ergodicity of a thermodynamic system through the mechanism of dynamical chaos, as is done in classical mechanics, one should instead examine the properties of matrix elements of observable quantities in individual energy eigenstates of the system.
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