Meaning of Kerr cell

Kerr' cell"

Pronunciation: (kär, kûr), [key]
— Physics. Physics.
  1. 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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.