Description
and raised-graduated for shatterproof bench use
demonstrating how sound transmission weakens as the air is evacuated
and magnetic-property variations
the standard spectrometer integrates collimator
Demonstration Electroscope Capacity_50mL and raised-graduated for shatterproof benchLarge 150mm ring with charging ball and condenser plates on an insulated rod, sized so the leaf deflection stays visible from the back of the room during whole class electrostatics demos.
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