polarimeter

An instrument used to measure the rotation of the plane of polarization of polarized light passing through an optical structure or sample.

A polariscope; more specifically, an instrument for measuring the amount of polarized light in the light received from a given source, or for measuring the angular rotation of the plane of polarization. See photo-pola-rimeter, polaristrobometer, and saccharimeter.

An instrument for determining the amount of polarization of light, or the proportion of polarized light, in a partially polarized ray.

An instrument used to measure the rotation of the plane of polarized light as it passes through a sample of an optically active compound.

an optical device used to measure the rotation of the plane of vibration of polarized light