Double Concave Glass Lens, 50mm Diameter, 250mm Focal Length, 3mm Thick Racks & Stands_Flask Stands gripping flasks and condensers up

gripping flasks and condensers up to 4

230mm disc graduated 0-360 degrees in 1-degree steps locks in any position alongside a rotatable lamp house and six magnetic acrylic elements for full ray-tracing studies of reflection and refraction

drawing 4-6V DC through 4mm sockets to demonstrate how current produces a concentrated magnetic field

Six 60-inch wires - steel and brass at 22

heavy duty

Double Concave Glass Lens, 50mm Diameter, 250mm Focal Length, 3mm Thick Racks & Stands_Flask Stands gripping flasks and condensers upSlim 3mm thick double concave glass lens at 50mm diameter and 250mm focal length, the diverging curvature paired with low mass for ray box mounts and lightweight optics setups.