diffractometer

[dih-frak-tom-i-ter, dif-rak-]

dif·frac·tom·e·ter

[dih-frak-tom-i-ter, dif-rak-]
noun Physics.
an instrument that is used to study atomic crystal structure by measuring the angles at which x-rays, neutrons, or electrons are diffracted by matter.

Origin:
1905–10; diffract + -o- + -meter
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Diffractometer is always a great word to know.
So is vibration. Does it mean:
the analogous motion of the particles of a mass of air or the like, whose state of equilibrium has been disturbed, as in transmitting sound
a sequence of changing states that produces a final state identical to the original one; one of a succession of periodically recurring events
Collins
World English Dictionary
diffractometer (ˌdɪfrækˈtɒmɪtə)
 
n
physics an instrument used in studying diffraction, as in the determination of crystal structure by diffraction of X-rays

Collins English Dictionary - Complete & Unabridged 10th Edition
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