Kerr cell

Kerr cell

[kahr, kur]
noun Physics.
a transparent cell filled with a fluid, usually nitrobenzene, and containing two electrodes placed between two polarizing light filters, suitable for demonstrating the Kerr effect and often used as a high-speed camera shutter.

Origin:
1925–30; see Kerr effect

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kerr cell

noun
optical device consisting of a transparent cell with two electrodes between two polarizing media; passes light only if the two planes of polarization are parallel; used as a high-speed shutter or to modulate a laser beam 
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