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- Newsgroups: rec.puzzles
- Path: sparky!uunet!wupost!darwin.sura.net!blaze.cs.jhu.edu!jyusenkyou!arromdee
- From: arromdee@jyusenkyou.cs.jhu.edu (Ken Arromdee)
- Subject: Re: Direction of the sun
- Message-ID: <1992Dec27.233525.5964@blaze.cs.jhu.edu>
- Sender: news@blaze.cs.jhu.edu (Usenet news system)
- Organization: Johns Hopkins University CS Dept.
- References: <1992Dec24.012636.17115@Csli.Stanford.EDU> <1hjv7nINN34t@gap.caltech.edu>
- Date: Sun, 27 Dec 1992 23:35:25 GMT
- Lines: 19
-
- In article <1hjv7nINN34t@gap.caltech.edu> carl@SOL1.GPS.CALTECH.EDU 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.
-
- Wrong. The rays from where the sun is now will reach us in 8 minutes, and
- will at that time be below the horizon, but that's because the horizon has
- moved in the intervening time, not because the sun has moved.
- --
- "the bogosity in a field equals the bogosity imported from related areas, plus
- the bogosity generated internally, minus the bogosity expelled or otherwise
- disposed of." -- K. Eric Drexler
-
- Ken Arromdee (arromdee@jyusenkyou.cs.jhu.edu, arromdee@jhunix.hcf.jhu.edu)
-