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- Newsgroups: sci.med
- Path: sparky!uunet!europa.asd.contel.com!darwin.sura.net!mips!decwrl!csus.edu!csusac!cindy!rat!kestrel.edu!king
- From: king@reasoning.com (Dick King)
- Subject: Re: Colonic irrigations
- Message-ID: <1992Jul26.183138.9750@kestrel.edu>
- Sender: news@kestrel.edu (News)
- Nntp-Posting-Host: drums.reasoning.com
- Organization: Reasoning Systems, Inc., Palo Alto, CA
- References: <15782@pitt.UUCP> <15813@pitt.UUCP> <1992Jul26.063951.126394@zeus.calpoly.edu>
- Date: Sun, 26 Jul 1992 18:31:38 GMT
- Lines: 35
-
- In article <1992Jul26.063951.126394@zeus.calpoly.edu> dfield@zeus.calpoly.edu (Daniel R. Field) writes:
- >In article <15813@pitt.UUCP> geb@dsl.pitt.edu (gordon e. banks) writes:
- >>People seem to "sit" on light bulbs quite often, too.
- >>If they are going to, it is better if they sit on the
- >>rounded end, leaving the screw end toward the anus so
- >>you can extract it by threading it onto a cord.
- >
- >Provided somebody doesn't get the bright idea of plugging it in!
-
- That would be dangerous. The walls of the lightbulb would crack from
- temperature gradients ;-) .
-
- >
- >Don't these people ever, uh, break the light bulb during this activity?
- >This seems potentially dangerous.
-
- Well it is of course, but nearly spherical objects made of brittle material can
- take an amazing amount of reasonably uniform compression. You need to apply
- LOCALIZED pressure to break it, so the material comes under tension somewhere.
-
- Wrap an egg in a handkercheif and try to break it by squeezing it in a fist.
- The handkercheif is to prevent any cuts in case you DO succeed, but you
- probably won't. Do try to apply uniform compression -- do NOT try to impres a
- hole with a finger joint, and especially don't cut with a fingernail.
-
- There is at least one research submarine made of a glass sphere. It can dive
- to 1500 feet. The motor and batteries, etc. are all outside the sphere, and
- the pilot controls these by light beams and photocells -- it would not be OK to
- pierce the shell with wiring. The two halves are very precisely ground [but
- there is an O ring].
-
- Some light bulbs have a near-vacuum inside.
-
-
- -dk
-