Double Convex Glass Lens, 50mm Diameter, 300-1000mm Focal Length Range Safety Supplies_Eye Protection the drilled aluminum ball gives

the drilled aluminum ball gives a lightweight contrast to steel and brass balls of the same size in pendulum period and momentum-transfer demonstrations

Visualizes Brownian motion through a smoke cell

42-piece mechanics and thermodynamics kit supports physics investigations through heat transfer

175mm aluminum pump plate with an integrated tube connector and stopcock on a heavy tripod base

Double Convex Glass Lens, 50mm Diameter, 300-1000mm Focal Length Range Safety Supplies_Eye Protection the drilled aluminum ball givesBuilt for long bench convergence flexibility, a 50mm double convex glass lens spanning 300 1000mm focal lengths gives projection style optics setups a single range rated element.