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Coherer, coarse brass turnings in long glass tube bent at end
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Filings coherer
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Coherer, narrow-bore glass tube
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Filings coherer, Lodge pattern
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Filings coherer
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Filings coherer
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Filings coherer, glass tube, capped at ends
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Filings coherer
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Coherer
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Filings coherer
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Filings coherer, glass tube bent into U-shape at one end
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Filings coherer with arrangement for adjusting the compression
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Filings coherer, glass tube almost of taper shape
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Filings coherer
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Filings coherer, glass tube
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Coherer
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Filings coherer
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Filings coherer with arrangement for adjusting the compression
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Filings coherer with arrangement for adjusting the compression
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Filing coherer
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Filings coherer, glass tube containing powdered copper
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Coherer
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Filings coherer, small glass tube with bulb at one end
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Coherer
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Filings coherer
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Filings coherer
Science Museum Group Collection
© The Board of Trustees of the Science Museum