Search our collection

Clear all filters
Image
Category
Maker
Object type
Place
Material
Date
Cascade generator built at the Cavendish Laboratory

Cascade generator built at the Cavendish Laboratory

1937
"Lightometer" light meter model E703

"Lightometer" light meter model E703

1950-1960
EEL Lightmaster Photometer serial no. 18-3486 (a light meter)

EEL Lightmaster Photometer serial no. 18-3486 (a light meter)

1960-1969 (estimated)
Four selenium low power rectifiers

Four selenium low power rectifiers

1942-1946
Photoectric cell c. 1915 (probably by GEC)

Photoectric cell c. 1915 (probably by GEC)

1910-1920
Glass-stoppered bottle containing selenium

Glass-stoppered bottle containing selenium

1801-1892 (prepared)
Bust of Berzelius in selenium, 1862

Bust of Berzelius in selenium, 1862

1862
Specimen of selenium powder

Specimen of selenium powder

1977
solid state rectifier for Philips million-volt accelerator (perspex stand)

solid state rectifier for Philips million-volt accelerator (perspex stand)

1937
Model 603 illumination meter by Weston Electrical Instrument Co.

Model 603 illumination meter by Weston Electrical Instrument Co.

1928-1938
Printing Cylinder from a Xerox Machine, 1978

Printing Cylinder from a Xerox Machine, 1978

1978
Cascade generator for 1.5 million volt accelerator

Cascade generator for 1.5 million volt accelerator

1937
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
'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 603 illumination meter, no. A.40195 by Weston Electrical Instrument Co., Surbiton, England, c. 1933.

Model 603 illumination meter by Weston Electrical Instrument Co.

1928-1938
Two selenium high voltage rectifiers: 1945 British 16 H.T.80; 1948 British 36 H.T.40

Two selenium high voltage rectifiers

1945-1948
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
A phial of source material for electromagnetic separator, labelled: 'Se' (selenium metal), unsigned, Europe, 1970-1980

Selenium for electromagnetic separator

1970-1980
Selenium medal commemorating Jacob Berzelius, unsigned, France, 1826. Obverse, head and shoulders with jacket, left-facing in profile representation of Jacobus Berzelius. Reverse, inscription. This medal is almost an exact copy of 1973-416/15: the difference being that this medal is smaller, unsigned and made in France.

Selenium medal commemorating Jacob Berzelius, France, 1826

1826
Selenium medal commemorating Jacob Berzelius, by H. Kirchner and Batka, Czechoslovakia, 1826. Obverse, head and shoulders, left-facing in profile representation of Jacobus Berzelius. Reverse, inscription. This medal is almost an exact copy of 1973-416/77: the difference being that this medal is larger, signed and made in Czechoslovakia.

Selenium medal commemorating Jacob Berzelius, 1826

1826
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