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

Exton, David

 
William Herschel's glas prism on stand, 1780-1800.
4 0 c m
 
34cm
actual image size: 26cm x 32cm

Description

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.

© Science Museum / Science & Society Picture Library

buy a print

Select size
 
Select finish
 
How many prints?
 
£20.00
 

buy a framed print

buy a canvas

buy a framed canvas

image details