Still image produced from radiation-sensitive materials (sensitive to light, electron beams, or nuclear radiation), generally by means of the chemical action of light on a sensitive film, paper, glass, or metal. Photographs may be positive or negative, opaque or transparent.
    

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Tropical Diseases, Elephantiasis of the scrotum.

Squamous cell carcinoma, mouse eye

A man putting a barrel on his shoulder. Photogravure after Eadweard Muybridge, 1887.

E. Muybridge "Animal locomotion", plate

Canine brain affected by cerebral haemorrhage

A man batting. Photogravure after Eadweard Muybridge, 1887.

Make us gasp with your images / Wellcome Images.

Portrait photograph of Charles Darwin

A man digging with a shovel. Photogravure after Eadweard Muybridge, 1887.

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Canine brain affected by cerebral haemorrhage

A man batting. Photogravure after Eadweard Muybridge, 1887.

Make us gasp with your images / Wellcome Images.

Portrait photograph of Charles Darwin

A man digging with a shovel. Photogravure after Eadweard Muybridge, 1887.