temperature sensitive film

Carl Pike 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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