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zb23
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What would happen with Einstein's coefficients if we wouldn't neglect the recoil effects?
Assuming that Einstein's coefficients are basically probabilities of absorption or emission of light by an atom or molecule, would recoil influence those probabilities?zb23 said:What would happen with Einstein's coefficients if we wouldn't neglect the recoil effects?
Einstein's coefficients recoil effect is a phenomenon in which an atom or molecule emits a photon with a certain energy and momentum, causing the atom or molecule to recoil in the opposite direction. This effect is a consequence of the conservation of momentum and energy.
The recoil effect causes the emitted photon to have a slightly lower energy and longer wavelength compared to the original energy and wavelength of the atom or molecule. This is because some of the energy and momentum is transferred to the atom or molecule itself, causing it to recoil.
The recoil effect is important in understanding the behavior of atoms and molecules, particularly in the emission and absorption of photons. It also plays a role in the Doppler effect and the spectral lines of atoms and molecules.
Einstein first predicted the recoil effect in his theory of spontaneous emission in 1917. He derived the equations for the recoil effect by considering the conservation of momentum and energy in the emission of photons from atoms and molecules.
No, the recoil effect can also occur in other types of particles, such as electrons, protons, and neutrons. However, it is most commonly observed in the emission and absorption of photons due to their extremely small mass and high speed.