radiometric

[rey-dee-om-i-ter]

ra·di·om·e·ter

[rey-dee-om-i-ter]
noun
1.
Also called Crookes radiometer. an instrument for demonstrating the transformation of radiant energy into mechanical work, consisting of an exhausted glass vessel containing vanes that revolve about an axis when exposed to light.
2.
an instrument for detecting and measuring small amounts of radiant energy.

Origin:
1870–75; radio- + -meter

ra·di·o·met·ric [rey-dee-oh-me-trik] , adjective
ra·di·om·e·try, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Radiometric is always a great word to know.
So is lollapalooza. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
Collins
World English Dictionary
radiometer (ˌreɪdɪˈɒmɪtə)
 
n
any instrument for the detection or measurement of radiant energy
 
radiometric
 
adj
 
radi'ometry
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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