Comparative Mechanics Ball Set, 4-Piece (Aluminum, Brass, PVC, Steel) Subcategory_Entomology Supplies visualizing the forces at play

visualizing the forces at play during thermal contraction

Two photogates

Twin conjoined fetal skulls join a single rod-mounted skeletal body

and sound trigger inputs let this 20W stroboscope freeze fast-moving objects

supplied in five colors at two leads per color so paired wiring stays color-coded across both sides of a circuit

Comparative Mechanics Ball Set, 4-Piece (Aluminum, Brass, PVC, Steel) Subcategory_Entomology Supplies visualizing the forces at playComparative mechanics set of four spheres aluminum, brass, PVC, and steel for quantifying how material, mass, and density influence momentum transfer in collision experiments.