Description

Plastic-bodied wave apparatus with eccentric discs that drive metal rods up and down as the handle turns

and 6V-powered ignition light staging each step

this Wimshurst generator builds a visible high-voltage spark

this motor-generator pairs a split-ring commutator against slip rings with bulb indicators

6-Piece Optical Lens Set, 3", Double Convex and Double Concave Physics_Mechanics Plastic-bodied wave apparatus with eccentricSix piece 3 inch optical lens set combining three double convex and three double concave glass lenses at 200mm, 300mm, and 500mm focal lengths for comparative refraction experiments.

Exchange/Return Notes

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6-Piece Optical Lens Set, 3", Double Convex and Double Concave Physics_Mechanics Plastic-bodied wave apparatus with eccentric

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