polarimeter

 
Pronunciation: /ˌpəʊləˈrɪmɪtə/

noun

  • an instrument for measuring the polarization of light, and especially for determining the effect of a substance in rotating the plane of polarization of light.

Derivatives

polarimetric

adjective

polarimetry

noun

Origin:

mid 19th century: from medieval Latin polaris 'polar' + -meter