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Lot 40
TELLURIAN; HEYMANN, Ludwig. [German school tellurian.] Leipzig: Ludwig Jul. Heymann, c.1870.
22 October 2014, 13:00 EDT
New YorkSold for US$2,000 inc. premium
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TELLURIAN; HEYMANN, Ludwig.
[German school tellurian.] Leipzig: Ludwig Jul. Heymann, c.1870.
A mid nineteenth-century geared tellurian on cast-iron stand. 14 inches tall, 13 inches long, the terrestrial globe 3 inches (7.6 cm) in diameter with 12 color lithograph gores and 2 polar calottes, signed "Erd Globus. Leipzig. Ldw. Jul. Heymann." Candle plate with paper onlay printed with seasons, months, days, direction, and signs of the zodiac. Crank mechanism Wanting candle-holder and reflector, paper on candle-plate wax-stained and chipped with some loss, about half of teeth to base gear broken off, paint to moon chipped, some wear and soiling to globe.
Tellurians were designed to demonstrate the rotations of the moon around the Earth, and the Earth around the Sun using a candle to act as the Sun. Using a geared mechanism, the Earth and Moon rotate around the Sun at the end of a long arm, while a candle reflector, which was fitted to a base that could be adjusted in height, demonstrated the position of shadows on the Earth and Moon according to their relative positions in relation to the Sun and each other.
A mid nineteenth-century geared tellurian on cast-iron stand. 14 inches tall, 13 inches long, the terrestrial globe 3 inches (7.6 cm) in diameter with 12 color lithograph gores and 2 polar calottes, signed "Erd Globus. Leipzig. Ldw. Jul. Heymann." Candle plate with paper onlay printed with seasons, months, days, direction, and signs of the zodiac. Crank mechanism Wanting candle-holder and reflector, paper on candle-plate wax-stained and chipped with some loss, about half of teeth to base gear broken off, paint to moon chipped, some wear and soiling to globe.
Tellurians were designed to demonstrate the rotations of the moon around the Earth, and the Earth around the Sun using a candle to act as the Sun. Using a geared mechanism, the Earth and Moon rotate around the Sun at the end of a long arm, while a candle reflector, which was fitted to a base that could be adjusted in height, demonstrated the position of shadows on the Earth and Moon according to their relative positions in relation to the Sun and each other.

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