Description

Picture taken 25th November 1973

Massachusetts

during Queen Mary I's reign

Cripplegate Postern

Interior view of Burlington Arcade

Davy lamp equality Picture taken 25th November 1973Original model for a miners' safety lamp by Humphry Davy, the narrow cylindrical gauze is shown housed under a glass dome on an ebonized base. Davy created the lamp for use in coal mines, he discovered that a flame enclosed inside the fine mesh does not ignite firedamp (methane and other flammable gases) thus preventing explosions. ca. 1815

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Davy lamp equality Picture taken 25th November 1973

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