Battery Eliminator, 1A, Alternate Model Material_Polyethylene 5 inch specific gravity cylinder

5 inch specific gravity cylinder with a top hook for spring-scale massing

Hands-on fold-and-fault model with manipulable rock strata

Adjustable flash-frequency control across this improved stroboscope lets students isolate periodic motion from rotating machinery

sized so that students can compare its uniform-curvature surface charge against sphere and cone partners in the conductor set

25-inch rods

Battery Eliminator, 1A, Alternate Model Material_Polyethylene 5 inch specific gravity cylinderUsed to replace dry cell stacks at the bench, this 1A battery eliminator handles AC and DC simultaneously to power circuit experiments without rotating in fresh disposable batteries.