Pill box filled with porphyrised copper, 1894-1904

PART OF:: Experimental coherers designed or used by Sir Oliver Lodge, 1894-1904

Made:: 1894-1904 in England

Pill box, marked in writing on lid ‘Porphyrised / copper / top of box’, containing a quantity of powdered copper, unknown maker, England, 1894-1904

Details

Category:: Radio Communication

Object Number:: 1942-40/31

Materials:: copper (alloy)

Measurements:: box diameter: 35 mm,

type:: pill box

credit:: Donated by E. E. and T. H. Robinson

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Pill box filled with porphyrised copper, 1894-1904

Details

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