Temporary suspension of EU shipping, view details here.

William Herschel's glas prism on stand, 1780-1800.

Exton, David

William Herschel's glas prism on stand, 1780-1800.
4 0 c m
actual image size: 26cm x 32cm


Sir William Herschel (1738-1822), the famous astronomer, used this glas prism with bras base for his experiments on thermal radiation. Used in conjunction with a heliostat, Herschel directed sunlight through the prism. This produced a spectrum whose temperature was les towards the blue than the red and greatest beyond the visible red light. Known today as the infrared this was the first time that radiation beyond visible light had been detected by experiment.

Image Details

Image Ref.

© Science Museum / Science & Society Picture Library

buy a print

Select size
Select finish
How many prints?

buy a framed print

buy a canvas

buy a framed canvas