Stephenson-safety-lamp
Forfatter/Opretter:
Samuel Smiles
Kredit:
Lives of the Engineers, 1862, digitized by Project Gutenberg 27710
Shortlink:
kilde:
størrelse:
525 x 499 Pixel (60876 Bytes)
beskrivelse:
Safety lamp invented by George Stephenson in 1815 for use in mines, with a Davy Lamp on the left, invented in the same year.
Licens:
Public domain
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