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- Newsgroups: rec.puzzles
- Path: sparky!uunet!spool.mu.edu!uwm.edu!rpi!batcomputer!cornell!karr
- From: karr@cs.cornell.edu (David Karr)
- Subject: Re: Direction of the sun
- Message-ID: <1992Dec28.051138.24331@cs.cornell.edu>
- Organization: Cornell Univ. CS Dept, Ithaca NY 14853
- References: <1992Dec24.012636.17115@Csli.Stanford.EDU> <1hjv7nINN34t@gap.caltech.edu>
- Date: Mon, 28 Dec 1992 05:11:38 GMT
- Lines: 21
-
- In article <1hjv7nINN34t@gap.caltech.edu> carl@SOL1.GPS.CALTECH.EDU writes:
- >In article <1992Dec24.012636.17115@Csli.Stanford.EDU>, hiraga@Csli.Stanford.EDU (Yuzuru Hiraga) writes:
- >>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.)
- >
- >The one who says that the sun is below the horizon. Just to help us in this
- >exercise,
- the great ship that the boys saw sailing off into the sunset suddenly falls
- off the edge of the world and disappears from sight.
-
- Well, if you're going to go with the Ptolemaic system, why not go whole-hog
- and postulate a flat Earth as well?
-
- -- David Karr (karr@cs.cornell.edu)
-
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