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单词 Einstein's absorption coefficient
释义 Einstein's absorption coefficient
[`īn´stīnz ǝb`sȯrp·shǝn ´kō·i´fish·ǝnt]
ATOMIC PHYSICS
The proportionality constant governing the absorption of electromagnetic radiation by atoms, equal to the number of quanta absorbed per second divided by the product of the energy of radiation per unit volume per unit wave number and the number of atoms in the ground state.
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