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Description: | none DES KERR,John,Reverend circa 1878 Glasgow Scotland MANU Unsigned. circa 1877 Glasgow Scotland This is a large liquid cell made from a shaped block of glass with a ground edge and two pieces of plate glass. The cell was formed by a on oblong cut out of the block such that when the plates are in position the cell is open at the top.
Kerr filled the cell with dielectric liquids such as nitrobenzene, dichloromethane and carbon disulphide. To demonstrate 'the Kerr electro-optic effect' the cell was connected to a high voltage source, about 4 Kv, in the form of a Rumkorff induction coil or a Holtz influence machine. Kerr found that the plane of polarisation of light passing through the cell was rotated. Because of the speed of the effect Kerr cells were used in early television cameras to modulate light, they have also been used as shutters in ultra high speed cameras. | License: | http://www.hmag.gla.ac.uk/spirit/rights/ | Publisher: | Hunterian Museum and Art Gallery, University of Glasgow | Rights holder: | Hunterian Museum and Art Gallery, University of Glasgow | Subjects: | SCIENTIFIC COLLECTION : | Source: | Hunterian Museum | Creator: | Hunterian Museum and Art Gallery, University of Glasgow | Identifier: | http://www.huntsearch.gla.ac.uk/cgi-bin/... | Language: | en-GB | Go to resource |
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