Photogram
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A photogram is a photographic image made without a camera by placing objects directly onto the surface of a light-sensitive material such as photographic paper and then exposing it to light.
A photogram of a number of photography-related objects
Photogram with soil and plants
One of Anna Atkins's cyanotype photograms of Festuca grasses
Photogram of a feather by Van Dyke brown print copying technique.
Thomas Wedgwood was an English photographer and inventor. He is most widely known as an early experimenter in the field of photography. He is the first person known to have thought of creating permane
Photogram
…silver salts, confirmed by Carl Wilhhelm Scheele in 1777, who found that violet light caused the greatest reaction in silver chloride. Humphry Davy and Thomas Wedgwood reported that they had produced temporary images from placing stencils/light sources on photo-sensitized materials but had no means of fixing (making…
Thomas Wedgwood
Salted paper photogram of a leaf, circa 1839. A speculative attribution to Wedgwood in 2008 was later retired.