The Astronomical Unit, Stellar Parallax, & the Transits of Venus
Determinating the Distance of the Earth from the Sun
From Eudoxus of Cnidos to Harold Spencer Jones
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The Orbits of the Earth & Venus
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Diagramatic Representation Containing the Essentials Geometric Relations Underlying Halley's Proposed Mehtod (Modern)
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Lalande's world map for the 1769 transit of Venus, showing the times for ingress & egress.
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Losmonov's Drawings of the 1769 Venus Transit
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Torbern Bergman's Drawings of the 1769 Venus Transit
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Close-up of Bergman's Drawing of the Blackdrop Effect
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Another Close-up of the Blackdrop Effect
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The Blackdrop Effect at the Limb of the Sun
The Orbits of the Earth & Venus
Diagramatic Representation Containing the Essentials Geometric Relations Underlying Halley's Proposed Mehtod (Modern)
Lalande's world map for the 1769 transit of Venus, showing the times for ingress & egress.
Losmonov's Drawings of the 1769 Venus Transit
Torbern Bergman's Drawings of the 1769 Venus Transit
Close-up of Bergman's Drawing of the Blackdrop Effect
Another Close-up of the Blackdrop Effect
The Blackdrop Effect at the Limb of the Sun