Coherer with coarse brass turnings, 1894
1894
Experimental coherers designed or used by Sir Oliver Lodge, 1894-1904
- Made:
- 1894-1904 in United Kingdom
- designer:
- Oliver Joseph Lodge
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Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
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© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Thirty coherers of various types and a pill box containing a quantity of porphyrised (powdered) copper, designed or used by Sir Oliver Lodge, British, 1894-1904.
These coherers, or detectors of Hertzian waves, are part of a collection originally owned by Sir Oliver Lodge, and show the development of design. Some were probably designed by Lodge's assistant E E Robinson, while others may be of French origin. One of this collection of thirty coherers is currently missing.
Filings coherer, glass tube curved into near U-shape at one end with coil winding at other end, 1894-1904
1894-1904
Filings coherer, glass tube, 1898
1898
Coherer, with several needles, 1894-1904
1894-1904
Coherer, with several needles in contact with crystal, 1894-1904
1894-1904
Filings coherer, Lodge-Muirhead system, 1900-1910
1900-1910
Filings coherer, Lodge-Muirhead system, 1900-1910
1900-1910
Filings coherer, glass tube bent into U-shape at one end, 1894-1904
1894-1904
Filings coherer, glass tube containing powdered copper, bulb at one end, 1894-1904
1894-1904
Filings coherer, glass tube capped at ends, 1894-1904
1894-1904
Filings coherer, Lodge pattern, 1895-1900
1895-1900
Filings coherer, small glass tube with bulb at one end and cap of red sealing wax at other end, 1898
1898
Coherer, narrow-bore glass tube, 1894-1904
1894-1904
Filings coherer, glass tube with side-pocket attached to mounting bracket, 1894-1904
1894-1904
Filings coherer, glass tube formed into bulbs at each end at right angles, 1899
1899
Filings coherer, glass tube formed into T-shape at one end and bent round into U-shape at other end with bulb, 1899
1899
Filings coherer, glass tube bent at 45-degree angle at one end to form side-pocket, 1898
1898
Filing coherer, glass tube, fitted on to mounting bracket with terminals, 1894-1904
1894-1904
Filings coherer, glass tube bent into U-shape at one end with bulb to form side-pocket on mounting bracket with terminals, 1894-1904
1894-1904
Coherer, narrow-bore glass tube, 1894-1904
1894-1904
Filings coherer, small glass tube with bulb at one end, 1894-1904
1894-1904
Filings coherer, small glass tube with bulb at one end, 1894-1904
1894-1904
Filings coherer, glass tube almost of taper shape, 1894-1904
1894-1904
Coherer, with steel needle inside part-wound with copper wire, 1894-1904
1894-1904
Filings coherer, Lodge-Muirhead system, 1900-1910
1900-1910
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Details
- Category:
- Radio Communication
- Object Number:
- 1942-40
- Materials:
- glass, metal (unknown), copper (alloy), brass (copper, zinc alloy) and wax
- Measurements:
-
overall (largest coherer): 280 mm x 90 mm x 15 mm,
overall (display board): 400 mm x 300 mm 3 kg
- type:
- coherer
- credit:
- Donated by E. E. and T. H. Robinson
