Mössbauer effect

Mössbauer effect

 
noun Physics.
the phenomenon in which an atom in a crystal undergoes no recoil when emitting a gamma ray, giving all the emitted energy to the gamma ray, resulting in a sharply defined wavelength.
Origin:
1955–60; named after R. Mössbauer
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Mössbauer effect is always a great word to know.
So is conduction. Does it mean:
the transfer of heat between two parts of a stationary system, caused by a temperature difference between the parts
a positively charged nucleus neutralized by negatively charged electrons revolving in orbits at varying distances from the nucleus
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Collins
World English Dictionary
Mössbauer effect (ˈmɒsˌbaʊə, German ˈmœsbauər)
 
—n
physics the phenomenon in which an atomic nucleus in a crystal of certain substances emits a gamma ray without any recoil to the atom. The study of the emitted gamma rays (Mössbauer spectroscopy) is used to determine the energy levels in a nucleus, the structure of molecules, etc
 
[C20: named after Rudolf Ludwig Mössbauer (born 1929), German physicist]

Collins English Dictionary - Complete & Unabridged 10th Edition
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