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The Antikythera mechanism (fragment A – front and rear); visible is the largest gear in the mechanism, about 13 cm (5 in) in diameter.
The Antikythera mechanism (fragment A – front and rear); visible is the largest gear in the mechanism, about 13 cm (5 in) in diameter.
Image: NAMA Machine d'Anticythère 4
Image: NAMA Machine d'Anticythère 4
Derek J. de Solla Price (1922–1983) with a model of the Antikythera mechanism
Derek J. de Solla Price (1922–1983) with a model of the Antikythera mechanism
Computer-generated front panel of the Freeth model
Computer-generated front panel of the Freeth model
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A small orrery showing Earth and the inner planets
A small orrery showing Earth and the inner planets
Antikythera mechanism, main fragment, c. 205 to 87 BC
Antikythera mechanism, main fragment, c. 205 to 87 BC
Carlo G Croce, reconstruction of Dondi's Astrarium, originally built between 1348 and 1364 in Padua
Carlo G Croce, reconstruction of Dondi's Astrarium, originally built between 1348 and 1364 in Padua
Astronomical clock (Venus-Mercury side) by Eberhard Baldewein, 1563–1568. Exhibit in the Mathematisch-Physikalischer Salon of Dresden, Germany.
Astronomical clock (Venus-Mercury side) by Eberhard Baldewein, 1563–1568. Exhibit in the Mathematisch-Physikalischer Salon of Dresden, Germany.