Tien T. Tsong - Academia Sinica
Tien T. Tsong - Academia Sinica
Tien T. Tsong - Academia Sinica
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Eratosthenes As Astronomer<br />
• Measured the distance to the sun as<br />
804,000,000 stadia ( 測 量 地 球 到 太 陽 之 距 離 )<br />
• Measured the distance to the Moon as 780,000<br />
stadia. ( 測 量 地 球 到 月 球 之 距 離 )<br />
• He computed these distances using data<br />
obtained during lunar eclipses. ( 從 月 蝕 時 得 到<br />
的 數 據 計 算 而 得 這 些 距 離 )<br />
• Measured the tilt of the Earth‘s axis with great<br />
accuracy obtaining the value of 11/83 of 180 ,<br />
namely 23 51’ 15“. ( 測 量 地 球 自 旋 角 度 )<br />
<strong>Tien</strong> T. <strong>Tsong</strong>
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