London : Cassell & Company.
1 print : process print, printed in colours ; image 8.8 x 17.2 cm
Spectra of the sun and stars. I. Sun. II. Sirius. III. Aldebaran. IV. Betelgeuze.
This picture is available at Wellcome Library
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Optics: spectra of various stars, including our sun. Coloured process print by Cassell.
Credit: Wellcome Collection.
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