KidWind Basic Turbine Building Parts, kit includes the KidWind Hub, a wind turbine generator, and 25 dowels, Recommended for College and High School, Pk10
Spectrum Discharge Tube, Mercury Gas to show spectral lines of pure substances. Tubes approximately 260mm long, central capillary portion approximately 3-1/2 to 4 (90-100mm) long with electrodes sealed at both ends and connected to lead wires protected by metal caps
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