Selenium cells and model apparatus for transmitting pictures by telegraph, 1881

Made:
1881 in United Kingdom

Selenium cells and model apparatus for transmitting pictures by telegraph (phototelegraphy). Designed and constructed by Dr Shelford Bidwell in 1881. Mounted on board. (Seven parts, 1908-141/1 to 1908-141/7).

Model apparatus for transmitting pictures by telegraph, 1881

Model apparatus for transmitting pictures by telegraph, 1881

1881
One of four examples of photosensitive (selenium) material in various stages of construction. Fixed to wooden mount.

Example of photosensitive (selenium) material c 1890

1880-1900
Black paper stencil of a butterfly mounted on glass plate.

Glass image of a butterfly c 1890

1880-1900
Scanned print of image of butterfly (1908-141 Pt3) on sensitised paper. Bound and mounted behind glass.

Scanned print of image of butterfly on sensitised paper, c 1890

1880-1900
Stencilled image of a horse, on glass. Part of apparatus for transmitting pictures by telegraph (phototelegraphy). Designed and constructed by Dr Shelford Bidwell in 1881.

Glass image of a horse, c 1890

1881
Scanned print of image of horse on sensitised paper, c 1890

Scanned print of image of horse on sensitised paper, c 1890

1880-1900
Wooden block with groove in its. Used to support one of the images (1908-141 Pt3 or 1908-141 Pt5) in front of the transmitter.

Wooden stand used to support images for transmission, c 1890

1880-1900
'Mica Strip With Notched Edges Ready for Winding.' One of four examples of photosensitive (selenium) material in various stages of construction. Fixed to wooden mount. Part of apparatus for transmitting pictures by telegraph (phototelegraphy). Designed and constructed by Dr Shelford Bidwell in 1881.

Mica Strip With Notched Edges Ready for Winding

1880-1900
'Mica Strip Wound With Wire.' One of four examples of photosensitive (selenium) material in various stages of construction. Fixed to wooden mount. Part of apparatus for transmitting pictures by telegraph (phototelegraphy). Designed and constructed by Dr Shelford Bidwell in 1881.

Mica Strip Wound With Wire

1880-1900
'Wound Mica Coated With a Film of Selenium'. One of four examples of photosensitive (selenium) material in various stages of construction. Fixed to wooden mount. Part of apparatus for transmitting pictures by telegraph (phototelegraphy). Designed and constructed by Dr Shelford Bidwell in 1881.

Wound Mica Coated With a Film of Selenium

1880-1900
Model Apparatus for Transmitting Pictures by Telegraph (Phototelegraphy)

Model Apparatus for Transmitting Pictures by Telegraph (Phototelegraphy)

1881
One of four examples of photosensitive (selenium) material in various stages of construction. Fixed to wooden mount.

Example of photosensitive (selenium) material c 1890

1880-1900
One of four examples of photosensitive (selenium) material in various stages of construction. Fixed to wooden mount.

Example of photosensitive (selenium) material c 1890

1880-1900
One of four examples of photosensitive (selenium) material in various stages of construction. Fixed to wooden mount.

Example of photosensitive (selenium) material c 1890

1880-1900
Cylindrical wooden block with groove in its.

Cylindrical wooden block with groove in its.

1880-1900

Details

Category:
Telecommunications
Object Number:
1908-141
type:
demonstration model
credit:
Bidwell, Shelford

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