54.1 MB (2.6 MB compressed)
4833 x 3914 pixels
40.9 x 33.0 cm ⏐ 16.1 x 13.0 in (300dpi)
ADRIENNE HART-DAVIS / SCIENCE PHOTO LIBRARY ADRIENNE HART-DAVIS / SCIENCE PHOTO LIBRARY
An artistic rainbow formed by coloured pencils. This simple instrument is composed of a stick of graphite and clay previously fired in a kiln and then encased in wood. Drawing sticks were in use by the 17th century and Nicholas-Jacques Conte (1755- 1805) is considered the official inventor.
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