Tien T. Tsong - Academia Sinica
Tien T. Tsong - Academia Sinica
Tien T. Tsong - Academia Sinica
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Madian Al-Qawsouni (d. 1634 AD)<br />
discussing simultaneity<br />
同 時 性 與 觀 察 者 關 係 的 討 論<br />
• The earth is spherical, and from there flows a<br />
problem. If three people stand together and one<br />
goes east, the other west, while the third would<br />
remain where he is. ( 三 人 之 中 一 人 往 東 , 一 人 往<br />
西 , 一 人 不 動 )<br />
• The two travelers would return to him, the one<br />
going east returning from the west, and vice versa.<br />
( 兩 旅 行 者 環 繞 地 球 一 圈 後 回 到 原 點 )<br />
• But the number of days spent by the travelers<br />
would be increased by one day for the one<br />
traveling east and decreased by a day for the one<br />
traveling west. ( 往 東 者 增 一 天 , 往 西 者 少 一 天 )<br />
<strong>Tien</strong> T. <strong>Tsong</strong>
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