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

Two photogates

3 glass holds 100mL with white graduations and glass key stopcock for titration and volumetric analysis

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

compatible with mass hangers and balance apparatus for physics coursework in weight

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 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.