(This is a plug for the AAPT apparatus competition, just concluded at Guelph,
Ontario)
Two different entries involving mirror symmetry won 'low-cost' awards at this
year's AAPT apparatus competition. One is called 'right-hand and left-hand
rules' (from Alice Churukian) , and the other is called 'Axial Vectors - A
Corridor Display' (from Gene Mosca and John Ertel of the Naval Academy).
All the info (entries, parts lists, description, pictures of apparatus and
people, winners of various awards) is at
Mike
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Mike Moloney, Physics & Applied Optics Department
Rose-Hulman Inst of Tech, 812 877 8302
moloney@rose-hulman.edu http://www.rose-hulman.edu/~moloney