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Aristarchus of Samos (/ ˌ æ r ə ˈ s t ɑːr k ə s /; Ancient Greek: Ἀρίσταρχος ὁ Σάμιος, Aristarkhos ho Samios; c. 310 – c. 230 BC) was an ancient Greek astronomer and mathematician who presented the first known heliocentric model that placed the Sun at the center of the universe, with the Earth revolving around the Sun once a year and rotating about its axis once a day.
Japanese Historical Text Initiative (JHTI) is a searchable online database of Japanese historical documents and English translations. It is part of the Center for Japanese Studies at the University of California at Berkeley .
Aristarchus's 3rd century BCE calculations on the relative sizes of, from left, the Sun, Earth and Moon, from a 10th-century CE Greek copy. On the Sizes and Distances (of the Sun and Moon) (Ancient Greek: Περὶ μεγεθῶν καὶ ἀποστημάτων [ἡλίου καὶ σελήνης], romanized: Perì megethôn kaì apostēmátōn [hēlíou kaì selḗnēs]) is widely accepted ...
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On the Sizes and Distances (Aristarchus), by Aristarchus of Samos (c. 310 – c. 230 BC) On Sizes and Distances (Hipparchus) , by Hipparchus ( c. 190 – c. 120 BC ) Topics referred to by the same term
Brownlee, John S. (1997) Japanese historians and the national myths, 1600-1945: The Age of the Gods and Emperor Jimmu. Vancouver: University of British Columbia Press. ISBN 0-7748-0644-3 Tokyo: University of Tokyo Press. ISBN 4-13-027031-1; Brownlee, John S. (1991).
Aristarchus's inequality (after the Greek astronomer and mathematician Aristarchus of Samos; c. 310 – c. 230 BCE) is a law of trigonometry which states that if α and β are acute angles (i.e. between 0 and a right angle) and β < α then
Aristarchus of Samos (/ ˌ æ r ə ˈ s t ɑːr k ə s /; Ἀρίσταρχος, Aristarkhos; c. 310 – c. 230 BC) was an ancient Greek astronomer and mathematician who presented the first known model that placed the Sun at the center of the known universe with the Earth revolving around it (see Solar System).