Optically Worked Double Convex Glass Lens, 200mm Focal Length, 38mm Diameter Lab Supplies_Scoops & Spatulas and simple harmonic motion investigations

and simple harmonic motion investigations in introductory mechanics

outer core

Glass-flask leaf electroscope with a brass rod and aluminum leaf

copper's high conductivity minimizing heat loss during mixing in thermodynamics work

Dual-screw adjustment on a heavy-duty spring-loaded three-finger jaw opens to 2

Optically Worked Double Convex Glass Lens, 200mm Focal Length, 38mm Diameter Lab Supplies_Scoops & Spatulas and simple harmonic motion investigationsOptically worked glass double convex lens with a 200mm focal length and 1. 5 inch diameter, polished and ground for image formation and refraction demonstrations in physics.