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Postive and negative electric change inspector

The Electrostatic Pendulum

Ampere force demonstrator

COMPASS

Multibase

Cathode Ray Tubes, with Maltese Cross

Glass Rod With Silk

Logic gates using integrated circuits,NOT,AND,OR,NAND,NOR and EX-OR

Device demonstrating of the frame rotating in the magnetic field

Left-right hand rule

OP-AMP

Magnetic Field Demo.Vertical Wire

Black and white Floating magnet

Electric plume

Lorentz Force Demonstrator

Diode characteristic apparatus forward & reverse bias-four D.C. meters & 2D.C.power supplies

Demonstration Resistance Box

Lenz's Law Demonstrator

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