Filings coherer, glass tube curved into near U-shape at one end with coil winding at other end, 1894-1904

Filings coherer, glass tube curved into near U-shape at one end with coil winding at other end, 1894-1904

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Filings coherer, glass tube curved into near U-shape at one end with coil winding at other end, designed or used by Sir Oliver Lodge, England, 1894-1904

Details

Category:
Radio Communication
Object Number:
1942-40/2
Materials:
silk, metal (unknown) and glass
Measurements:
overall: 20 mm x 125 mm x 40 mm,
type:
coherer
credit:
Donated by E. E. and T. H. Robinson