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polarimeter

[ poh-luh-rim-i-ter ]

noun

, Optics.
  1. an instrument for measuring the amount of light received from a given source as a function of its state of polarization.
  2. a form of polariscope for measuring the angular rotation of the plane of polarization.


polarimeter

/ ˌpəʊləˈrɪmɪtə; ˌpəʊlərɪˈmɛtrɪk /

noun

  1. an instrument for measuring the amount of polarization of light
  2. an instrument for measuring the rotation of the plane of polarization of light as a result of its passage through a liquid or solution See optical activity
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Derived Forms

  • ˌpolarˈimetry, noun
  • polarimetric, adjective
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Word History and Origins

Origin of polarimeter1

1860–65; < Medieval Latin polāri ( s ) polar + -meter
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Example Sentences

They'll have a polarimeter to examine the directional quality of the corona's light and a spectrometer to look for the behaviour of excited iron atoms.

From BBC

“If we look at clouds and see polarization, that would be a smoking gun,” says astrophysicist Philip Kaaret of the University of Iowa, who worked on a rival polarimeter proposal that lost out to IXPE.

On a 2010 episode of The History Channel show, he saw a polarimeter.

Glucose may be estimated by means of the polarimeter, i.e. by determining the rotation of the plane of polarization of a solution, or, chemically, by taking advantage of its property of reducing alkaline copper solutions.

Nevertheless, by using the spectroscope and the polarimeter, I ascertained that this light did not appear to differ perceptibly from the natural light diffused by a white surface.

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PolariPolaris