Image
Category
Collection
Maker
On Display
Object type
Place
Material
Date

Filings coherer, glass tube bent into U-shape at one end, 1894-1904

1894-1904

Filings coherer, glass tube almost of taper shape, 1894-1904

1894-1904

Marconi coherer and Admiralty pattern decoherer, 1900-1910

1900-1910

Filings coherer, Lodge-Muirhead system, 1900-1910

1900-1910

Filings coherer, glass tube containing powdered copper, bulb at one end, 1894-1904

1894-1904

Filings coherer, Lodge pattern with two wires inserted into bulb at one end, 1894-1904

1894-1904

Coherer, ebonite, with adjustable contacts, 1890-1896

1890-1896

Coherer, narrow-bore glass tube, 1894-1904

1894-1904

Filings coherer, small glass tube with bulb at one end and cap of red sealing wax at other end, 1898

1898

Filings coherer, glass tube with side-pocket attached to mounting bracket, 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

Filings coherer, glass tube formed into T-shape at one end and bent round into U-shape at other end with bulb, 1899

1899

Coherer, with several needles in contact with crystal, 1894-1904

1894-1904

Filing coherer, glass tube, fitted on to mounting bracket with terminals, 1894-1904

1894-1904

Filings coherer, small glass tube with bulb at one end, 1894-1904

1894-1904

Filings coherer, glass tube with side pocket mounted on cylindrical rod with brass screw terminals at ends, 1894-1904

1894-1904

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

1894-1904

Filings coherer, Lodge pattern, 1895-1900

1895-1900

Filings coherer, Lodge-Muirhead system, 1900-1910

1900-1910

Filings coherer, Lodge-Muirhead system, 1900-1910

1900-1910

'Italian Navy' detector, 1899-1901

1899-1901

Coherer with coarse brass turnings, 1894

1894

Spiral spring coherer, 1890-1894

1890-1894

Branly tripod coherer, 1900-1910

1900-1910

Filings coherer, small glass tube with bulb at one end, 1894-1904

1894-1904

Filings coherer, glass tube, 1898

1898

Filings coherer, Lodge-Muirhead system, 1900-1910

1900-1910

Coherer, coarse iron turnings, 1894-1904

1894-1904

Filings coherer, Lodge-Muirhead system, 1900-1910

1900-1910

Coherer, with steel needle inside part-wound with copper wire, 1894-1904

1894-1904

Coherer, with several needles, 1894-1904

1894-1904

Filings coherer, glass tube capped at ends, 1894-1904

1894-1904

Iron borings coherer (Branly type), 1894

1894

Filings coherer, glass tube formed into bulbs at each end at right angles, 1899

1899

Iron borings coherer (Branly type), 1894

1894

Filings coherer, glass tube bent at 45-degree angle at one end to form side-pocket, 1898

1898

Spark gap or knob coherer, 1889

1889

Double coherer (experimental), 1895-1906

1895-1906

Original wheel or steel-disc coherer, 1902

1902

Coherer, one of two

1885-1940

Flat steel-spring (or watch-spring) coherer, 1894

1894

Two slaby coherers, wireless

Coherer in original metal box (MMS Patent 10445)

Two iron borings coherers

Coherer, one of two

1885-1940

Wheel or steel-disc coherer (thin-film detector), 1902

1902

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

1894-1904

Iron filings coherer

Filings coherer

Home made coherer