Engraving depicting Mangin and Leroyers signalling lamp for mines. The incandescent bulb was immersed in a lantern of distilled water to minimize the chance of an explosion should the lamp break. Dated 19th century.
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Details
Creative#:
TOP29619159
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
Not Available
Property Release:
Not Available
Right to Privacy:
No
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