Demonstrator of Electric Field Line

This instrument work in projector, can show to order the electric charge, of same race electric charge different race electric charge, parallel plank, cone conductor, electrostatic inductionetc. the image of the electric field line.

Description

This instrument work in projector, can show to order the electric charge, of same race electric charge different race electric charge, parallel plank, cone conductor, electrostatic inductionetc. the image of the electric field line.

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