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Year 1963, Volume: 27 Issue: 105, 31 - 36, 20.01.1963

Sevim Tekeli

Abstract

Birûnî's Methods on Finding the Solar Parameters

Year 1963, Volume: 27 Issue: 105, 31 - 36, 20.01.1963

Sevim Tekeli

Abstract

To calculate the eccentricity and the longitude of the apogee of the orbit of the sun, Hipparchus used the intervals of the seasons. Consequently, he observed the tropics and the equinoxes by using several instruments. After him, Ptolemy followed the same way. In 16th Century, as it is known, the astronomers dwelt upon the dissatisfaction of this method because of the difficulty of the observation of the tropics. Are there any astronomers who took this problem up before 16th Century? We find the answer of this question in Al Qânun al Mas'ûdî of Birûnî. Birüni examines the sun in the sixth chapter of his book. He calculates the eccentricity and the longitude of the apogee of the orbit of the sun by using the old method.

Keywords

Birûni Al Qânun al Masûdî Hipparchus Solar Parameters Longitude Calculation Islamic History of Science

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Details

Primary Language English
Journal Section Araştırma Makaleleri
Authors

Sevim Tekeli This is me

Publication Date January 20, 1963
Published in Issue Year 1963 Volume: 27 Issue: 105

Cite

APA Tekeli, S. (1963). Birûnî’s Methods on Finding the Solar Parameters. BELLETEN, 27(105), 31-36. https://doi.org/10.37879/ttkbelleten.1213062
AMA Tekeli S. Birûnî’s Methods on Finding the Solar Parameters. TTK BELLETEN. January 1963;27(105):31-36. doi:10.37879/ttkbelleten.1213062
Chicago Tekeli, Sevim. “Birûnî’s Methods on Finding the Solar Parameters”. BELLETEN 27, no. 105 (January 1963): 31-36. https://doi.org/10.37879/ttkbelleten.1213062.
EndNote Tekeli S (January 1, 1963) Birûnî’s Methods on Finding the Solar Parameters. BELLETEN 27 105 31–36.
IEEE S. Tekeli, “Birûnî’s Methods on Finding the Solar Parameters”, TTK BELLETEN, vol. 27, no. 105, pp. 31–36, 1963, doi: 10.37879/ttkbelleten.1213062.
ISNAD Tekeli, Sevim. “Birûnî’s Methods on Finding the Solar Parameters”. BELLETEN 27/105 (January 1963), 31-36. https://doi.org/10.37879/ttkbelleten.1213062.
JAMA Tekeli S. Birûnî’s Methods on Finding the Solar Parameters. TTK BELLETEN. 1963;27:31–36.
MLA Tekeli, Sevim. “Birûnî’s Methods on Finding the Solar Parameters”. BELLETEN, vol. 27, no. 105, 1963, pp. 31-36, doi:10.37879/ttkbelleten.1213062.
Vancouver Tekeli S. Birûnî’s Methods on Finding the Solar Parameters. TTK BELLETEN. 1963;27(105):31-6.

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