Description

polished with ground edges for image-formation experiments in introductory optics

Aluminum-cased 4-inch plotting compass with a glass face

dramatizing Coulomb repulsion and charge distribution on conductors

supplying an inert electrode that conducts current without contributing its own ions to the cell reaction

supporting a 1

Silk Cloth Square for Static Demonstrations, 12 x 12" Material_Bristle polished with ground edges forUsed to draw electrons from glass and ebonite rods during rubbing, this silk square gives friction rods a strong positive charge for triboelectric and electrostatic demonstrations.

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Silk Cloth Square for Static Demonstrations, 12 x 12" Material_Bristle polished with ground edges for

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