POLARIMETER
\pˈə͡ʊlɑːɹˌa͡ɪmiːtə], \pˈəʊlɑːɹˌaɪmiːtə], \p_ˈəʊ_l_ɑː_ɹ_ˌaɪ_m_iː_t_ə]\
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An instrument for determining the amount of polarization of light, or the proportion of polarized light, in a partially polarized ray.
By Oddity Software
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An instrument for determining the amount of polarization of light, or the proportion of polarized light, in a partially polarized ray.
By Noah Webster.
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An apparatus for measuring the degree of rotation which a beam of polarized light undergoes. It consists of a Nicol prism (polarizer) which polarizes the light, and a second Nicol prism (analyser) which extinguishes the polarized ray. When a substance which rotates the plane of polarization is placed between the prisms, the ray which has been extinguished reappears and the analyser has to be rotated through a certain angle in order again to extinguish it.
By Alexander Duane
By Willam Alexander Newman Dorland
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An apparatus for measuring the degree of polarization, the proportion of polarized light present in a beam of light, or the amount by which the plane of polarization is rotated by the passage of a polarized ray through an optically active substance. See polariscope and saccharimeter. [Lat.]
By Smith Ely Jelliffe
Word of the day
tinctura quininae ammoniata
- A preparation made by dissolving quinin sulphate in alcohol [Br. Ph.].