Variable Angle Glass Prism, 25° x 25° x 130° Subcategory_Thermometers with lengths varying by density with lengths varying by density to isolate the mass volume density relationship for student investigation Sixteen SWG bare constantan wire on a 125g reel — a copper nickel alloy with a low temperature coefficient that holds resistance steady across a wide temperature range Pairs a 25° apex with 25° x 25° x 130° geometry on a glass prism the apex continuing the systematic angle versus deviation series for comparing nonlinear deviation growth
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Variable Angle Glass Prism, 25° x 25° x 130° Subcategory_Thermometers with lengths varying by density