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In spectroscopy, oscillator strength is a dimensionless quantity that expresses the probability of absorption or emission of electromagnetic radiation in transitions between energy levels of an atom or molecule. [1] [2] For example, if an emissive state has a small oscillator strength, nonradiative decay will outpace radiative decay.
A kip-up or kick-up (also called a rising handspring, Chinese get up, kick-to-stand, nip-up, [1] flip-up, or carp skip-up) is an acrobatic move in which a person transitions from a supine, and less commonly, a prone position version known as prone get-up, to a standing position.
The momentum balance equations can be extended to more general materials, including solids. For each surface with normal in direction i and force in direction j, there is a stress component σ ij. The nine components make up the Cauchy stress tensor σ, which includes both pressure and shear.
Similarly, the coupling between an electromagnetic wave and an atomic transition with transition dipole moment depends on the charge distribution within the atom, the strength of the electric field, and the relative polarizations of the field and the transition. In addition, the transition dipole moment depends on the geometries and relative ...
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A phonon is a collective excitation in a periodic, elastic arrangement of atoms or molecules in condensed matter, specifically in solids and some liquids.A type of quasiparticle in physics, [1] a phonon is an excited state in the quantum mechanical quantization of the modes of vibrations for elastic structures of interacting particles.
The motion in which all the particles of a body move through the same distance in the same time is called translatory motion. There are two types of translatory motions: rectilinear motion; curvilinear motion.
I'm really pleased to see such a strong quarter, being up 5% and up 9% on the bottom line, feels really good. Great to see that the momentum is still there. Stores and clubs still driving volume ...