Glass Positive - 'Distribution of Radial Velocities in Sunspots', circa 1920s, 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.
Keywords:
Glass Positive, Distribution, Radial Velocities, Sunspots, circa 1920s, Glass slide, chart showing distribution, radial velocities, sunspots, book, American astronomer Charles Edward St John, part, collection, eighteen astronomical black, white photographic lantern slides, glass negatives
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