If you want to get your hands on some sticky-back liquid crystal
thermometers quickly, look in the aquarium supplies department of your local
discount or pet store. The aquarium thermometers would suit your needs very
well.
If you'd like inexpensive digital thermometers for other experiments, you
can get some nice ones for $10-$12 in the cooking gadgets department in
Wal-Mart (or similar discount store). Some of them don't go low enough for
the home-made ice cream salt/water mix, but they cover the range from
freezing to boiling water very well, your choice of F or C.
For all kinds of physics toys/gadgets, try the everything-for-a-dollar
stores. You never know what goodies you'll find.
Vickie
-----Original Message-----
From: Seth Miller [mailto:stmiller@NYX.NET]
Sent: Friday, September 13, 2002 2:32 PM
To: PHYS-L@lists.nau.edu
Subject: Thermal/Temperature Strips
Hello all-
I am looking for temperature strips - small strips of some paper-like
material that you can attach to a substance and which will change color
to display the approximate temperature.
The idea is that for a 9th grade class I will do a demonstration where
students go to various different objects in the room and
phenomenologically test the temperature by simply feeling it with their
hands. Then I will have them place these temperature strips on the
objects they touched, wait a while, then have the students read the
temperatures for the various objects. This way they will be able to
note that although some objects feel warmer or cooler, all the
temperature strips read the same (I'm assuming these objects have all
been in the same room for a few hours). Or perhaps a better way to say
it is that although the temperature strips read the same, some objects
feel warmer or cooler.
If anyone could help me locate these strips or anything else that would
work for this experiment (I need cheap!) I would be very greatful!!
Thanks-
-Seth Miller
Denver Waldorf High School
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