Calculate the length of a Kerr cell using carbon disulphiderequired to produce half wave retardation for an applied voltage of30kV. The electrodes of this cell have a separation of 1.5 cm. Isthis cell practical? Repeat the calculation, this time the carbondisulphide being replaced by 4-cyanophenyl 4-pentylbenzoate. Usevalues given in the notes. Is this cell practical?
Carbon disulphide CS2 3.5 × 10-12 cmV-2 .
4-cyanophenyl 4-pentylbenzoate 9537 × 10-12 cmV-2 at 63.9ºC.
