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Description: | STANDARD PENTANE LAMP (white paint on the glass pentane reservoir). VERNON HARCOURT'S STANDARD PENTANE LAMP No.2 MADE BY WOODHOUSE & RAWSON< UNITED LTD No 5652. (engraved on a brass maker's trade plate). DES after VERNON HARCOURT,George,Augustus. second half 19th century Christ Church, Oxford, England. MANU Woodhouse & Rawson, United Ltd. circa 1900 England. This is a standard pentane lamp used in photometery as a replacement for the Standard British Candle which was defined as: seven eigths of an inch in diameter, six to the pound, and burns one hundred and twenty grains of spermaceti (i.e. cetaceum a translucent crystalline wax, cheifly consisting of cetyl palmitate, derived from the heads of sperm and bottle nosed whales) per hour. Under standard conditions the lamp was rated at ten Standard British Candles. Harcourt produced three standard pentane lamps of varying complexity. The standard pentane lamp was largely superceeded in 1924 with the introduction of standard electric incandescent lamps. | 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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