Engraving of a spectroscope attached to a telescope for solar work, 1874.
4 0 c m
 
39cm
actual image size: 31cm x 32cm

Engraving of a spectroscope attached to a telescope for solar work, 1874.

© Science Museum / Science & Society Picture Library

Description

Plate taken from Joseph Norman Lockyer's, 'Contributions to Solar Physics'. This engraving shows how observations of the Sun were conducted with a spectroscope attached to a telescope, and identifies the various component parts of the instrument by means of a key. A spectroscope is used to analyse the spectrum of solar radiation, with the light split into its constituent wavelengths by prisms.
 

Image Ref.

10408751
 

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