Summary
Glass slide of a chart showing distribution of radial velocities in sunspots, from a book by American astronomer Charles Edward St John, circa 1920s. It is part of a collection of eighteen astronomical black and white photographic lantern slides and glass negatives.
Description of Content
Reproduction of a diagram showing the distribution of radial velocities in sunspots.
Physical Description
Black and white glass slide.
More Information
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Collecting Areas
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Author
Charles E. St John, United States of America, circa 1920s
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Date Manufactured
circa 1920s
of Slide -
Format
Glass Slide, Black & White
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Inscriptions
Hand written in black ink on a white label attached to glass: '190' Text printed in negative: '342 / CHARLES E. ST. JOHN / [extensive text]'
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Classification
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Category
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Discipline
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Type of item
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Overall Dimensions
82 mm (Width), 107 mm (Height)
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Keywords
Astronomy, Diagrams, Illustrations, Lantern Slides, Observatories, Stars, Sunspots