Double Convex Glass Lens, 50mm Diameter, 300-1000mm Focal Length Range Safety Supplies_Eye Protection showing how the center of

showing how the center of gravity of a solid passes through its support polygon

a mid-density reference for comparative experiments alongside the copper and aluminum cylinders

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

Mounted in a plastic case with 4mm safety sockets

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

Double Convex Glass Lens, 50mm Diameter, 300-1000mm Focal Length Range Safety Supplies_Eye Protection showing how the center ofBuilt 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.