A high-school astronomy: in which the descriptive, physical, and practical are combined .. (1859)
Mattison, Hiram, 1811-1868 · New York, Mason brothers · leaf 218
White Let a ray of light from the sun be admitted through a hole in the window shutter, Anto a room from which all other light is excluded; it will form, on a screen placed a lit-tle distance in front, a circular image, B, of white light. Now, interpose near the shut-ter a glass prism. C, and the…
Astronomy
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