Message-Id: <3.0.32.19981115013250.00874a10@netmail.home.com>
Date: Sun, 15 Nov 1998 01:32:51 -0700
To: "Pinhole Listserv" <pinhole@exploratorium.edu>
From: The Lahrs <JohnJan@lahr.org>
Subject: Re:Disease Project
A suggestion I saw at the National Middle School Association's convention
in Denver was to use a fine powder that glows under a black light to
demonstrate the transmission of germs. I don't know any other details,
but suppose that if one person started with the powder on their hands at the
start of the day, by the end of the day it would have spread to many
other people's hands and the surfaces of the tables, etc.
John
* John C. and Jan H. Lahr *
* JohnJan@lahr.org *
* 1925 Foothills Road *
* Golden, Colorado 80401-1718 *
* (303) 215-9913 *
* http://lahr.org/john-jan *
* AOL version of homepage: *
* http://lahr.org/john-jan/homepage.html *
* http://giseis.alaska.edu/lahr *