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- Newsgroups: rec.puzzles
- Path: sparky!uunet!stanford.edu!Csli!hiraga
- From: hiraga@Csli.Stanford.EDU (Yuzuru Hiraga)
- Subject: Direction of the sun
- Message-ID: <1992Dec24.012636.17115@Csli.Stanford.EDU>
- Organization: Stanford University CSLI
- Date: Thu, 24 Dec 1992 01:26:36 GMT
- Lines: 16
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-
- # Heard from a Japanese colleague -- Sorry again if this is in the FAQL
-
- Two boys, A and B, are watching the sunset.
- A points to the sun and says:
- "This is the direction where the sun is right now."
- B replies:
- "But don't you know that the rays take over 8 minutes to reach the Earth?
- The sun is actually already below the horizon."
- Which is correct? Why? (Make it understandable to a ten year-old.)
-
- # note: ignore subsidiary points like refraction by the atmosphere.
-
- BONUS: What would the answer be under the Ptolemaic system?
-
- -Yuzuru Hiraga
-