Sling Psychrometer, to measure relative humidity, Includes two plastic-backed Celsius thermometers, one for dry bulb measurements and the other for wet bulb measurements, Includes an activity guide with relative humidity calculation table, Requires assembly
Lenz' Law - Open & Closed Loop, Simple, Economical Device, Constructed Of Cast Iron Base And Aluminum Ring, Used To Demonstrate The Induction Of An Magnetic Field, This Teaches Faraday'S Law Of Induction As Well As Lenz' Law.
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