Comparative Mechanics Ball Set, 4-Piece (Aluminum, Brass, PVC, Steel) Subcategory_Entomology Supplies Two photogates

Two photogates

Straight receiver adapter with cone in borosilicate glass features 24/29 socket and 24/29 cone for distillation collection and apparatus connections

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

paired with a 19

Half-size digestive system model fits smaller class benches while preserving the full esophagus-to-rectum path and accessory organ anatomy in two removable parts

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