temperature sensitive film
c_pike at ACAD.FANDM.EDU
Wed May 30 09:17:12 EST 2001
Many years ago i purchased such material from Edmund Scientific.
They had several versions, each changing temperature over a different
range. It was a fairly effective demonstration. You can compare
narrow and broad leaves, dissected leaves, etc. I think these are
liquid crystal materials, of the sort used in the fever thermometers
you stick on your forehead.
Carl S. Pike
Harry W. and Mary B. Huffnagle Professor of Botany
Department of Biology Phone (717) 291-3958
Franklin and Marshall College email C_PIKE at ACAD.FANDM.EDU
P.O. Box 3003 fax (717) 358-4548
Lancaster, PA 17604-3003 USA
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