r/2(R+r)=about 4%o.Please note the tangent line.

来源: jinjing 于 2011-08-13 14:27:31 [] [旧帖] [给我悄悄话] 阅读数 : (0 bytes)
回答: 回复：一次流星雨能有多少人看到？ 由 wxcfan123 于 2011-08-13 12:05:27

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• 0.4%? -贫论员- ♀ 给 贫论员 发送悄悄话 (0 bytes) () 08/15/2011 postreply 12:07:10

• Yes.Only estimat,we don't know the time,it has relation with the -jinjing- ♀ 给 jinjing 发送悄悄话 (0 bytes) () 08/15/2011 postreply 16:33:51

• It has relation with the rotation of the Earth. -jinjing- ♀ 给 jinjing 发送悄悄话 (0 bytes) () 08/15/2011 postreply 16:50:46

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