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ERIC Number: EJ1080570
Record Type: Journal
Publication Date: 2015-Nov
Pages: 4
Abstractor: As Provided
ISSN: ISSN-0031-9120
Humphrey Davy and the Safety Lamp: The Use of Metal Gauze as a Flame Barrier
Mills, Allan
Physics Education, v50 n6 p673-676 Nov 2015
The "safety lamp" invented by Humphrey Davy in 1815 utilised the cooling effect of metal gauze to prevent the flame of a candle or oil lamp (essential for illumination in mines) from passing through such a screen. It is therefore rendered unable to ignite any potentially explosive mixture of air and methane in the atmosphere surrounding the lamp. A number of experimental demonstrations are detailed to illustrate this effect, and show how the lamp could also indicate the presence of methane in the air of a coal mine.
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A