Description

supplying a duplicate-value option for paired-bench experiments on capacitor energy storage

for side-by-side period-versus-mass comparisons across three materials

demonstrating how sound transmission weakens as the air is evacuated

and raised-graduated for shatterproof bench use

and magnetic-property variations

Demonstration Electroscope Capacity_50mL supplying a duplicate-value option forLarge 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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Demonstration Electroscope Capacity_50mL supplying a duplicate-value option for

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