Description
Plug-in 120V AC blower sized to feed a linear air track
Bicycle dynamo on a 4mm-socket base with a parallel-wired MES lamp and 2
demonstrating how AC input is converted to pulsing DC output
Wooden-frame abacus on a 13
producing more sinusoidal oscillation than a standard helical spring for SHM studies
Hair Hygrometer, 105mm Diameter Size_13 Inch Plug-in 120V AC blower sizedMetal cased hair hygrometer on a 105 mm dial reading 0 to 100 percent relative humidity in 1 percent divisions through hair fiber response, running battery free for direct room condition reads.
Exchange/Return Notes
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