Double Concave Glass Lens, 50mm Diameter, 250mm Focal Length, 4mm Thick Physics_Electricity & Magnetism Compares 2-

Compares 2-

Foundational 12-slide introductory set covers plant and animal tissue preparations for first-year microscopy work in general biology classrooms

supplying precise low-resistance values for Wheatstone-bridge and Ohm's-law investigations

closing a circuit by inserting the plug into the gap between the copper blocks

and 125mm in a plastic wallet with keepers

Double Concave Glass Lens, 50mm Diameter, 250mm Focal Length, 4mm Thick Physics_Electricity & Magnetism Compares 2-Double concave glass lens at 50mm diameter and 250mm focal length on a 4mm thick blank, the diverging curvature softening divergence for subtler virtual image reduction in optics work.