Stanislaw Lubieniecki. Mathematicarum de Motu Cometae, Cometicar, Rudbekiana, Motus Cometici. 1662.
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Orbits of the planets Herschel and Leverrier, eccentric names for Uranus and Neptune. Smith’s Illustrated astronomy. 1855.
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Helisaeus Roeslin - Diagram of the Created Cosmos, ‘’De Opere Dei Creationis’’, 1597.
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Fig. 140a. Hering figure. Elements of physiological psychology. 1911.
When two straight and parallel lines are presented in front of radial background (like the spokes of a bicycle), the lines appear as if they were bowed outwards.
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crowd of the damned
Pamplona Bible, Navarre 1197
Amiens, Bibliothèque municipale, ms. 108, fol. 254r
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Fig. 121. The elliptical orbit of the Moon allows a portion of its dark side to sometimes become visible. Astronomy for the use of schools and academies. 1882. (via nemfrog)
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