送交者: HunHunSheng 于 2005-1-12, 17:26:33:

回答: 混混脑子糊涂了,你的同时也是可以算的,不过就不需要夏至这个概念了. 由 wangle 于 2005-1-12, 17:22:11:

If two cities were so apart and it may take
several days to go from one to the other.

Antient timepieces like sand clock might
not be accurate enough

• 测量最短距离,就保证它是夏至中午,当然还要测出两地连线和这时影子的角度. - wangle (0 bytes) 2005-1-12, 17:32:21
  • Noon at one city might be ahead of or lag behind the noon at the other city - HunHunSheng (0 bytes) 2005-1-12, 17:34:21
    • It is still possilbe to get simultaneity if you really want it - wasguru (105 bytes) 2005-1-12, 21:29:41

加跟贴