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- From: minsky@media.mit.edu (Marvin Minsky)
- Subject: Re: Why are elementary particles small?
- Message-ID: <1993Jan4.022335.25485@news.media.mit.edu>
- Sender: news@news.media.mit.edu (USENET News System)
- Cc: minsky
- Organization: MIT Media Laboratory
- References: <1993Jan3.235010.17976@math.ucla.edu>
- Date: Mon, 4 Jan 1993 02:23:35 GMT
- Lines: 18
-
- In article <1993Jan3.235010.17976@math.ucla.edu> barry@arnold.math.ucla.edu (Barry Merriman) writes:
- >Why are elementary particles small?
- >
- >Clearly, the ones that comprise our bodies must be much smaller than
- >ourselves, but why are there no other elementary particles that are
- >the size of, say, a baseball?
-
- Well, the common hadrons are smallish, but low energy photons can be
- as big as you like.
-
- Possible, there are some very large particles -- whose energies are so
- small that we have not been able to detect them. This is assuming
- that large size goes with small mass, a la uncertainty. On the other
- side, the as-yet unestablished black holes appear to be more or less
- "elementary", in the sense of having very few parameters. They are
- very massive -- and are either very large or very small, depending on
- whether you think about the or the singularity. Aren't the baseball-sized
- ones rather short lived, according to Hawking radiation theory?
-