Concave Glass Mirror, 75mm Diameter, 300mm Focal Length Item Type_Density Cubes & Cylinders Polished copper calorimeter at 75

Polished copper calorimeter at 75 by 50mm with a lidded wood-and-plastic cover

an Erlenmeyer flask

Copper plate with 4mm socket terminals for the simple-cell apparatus

Four-socket E10 lamp holder pre-wired in series on a hard-plastic base with two 4mm banana terminals

Barlow's Wheel apparatus with neodymium magnets and a heavy base

Concave Glass Mirror, 75mm Diameter, 300mm Focal Length Item Type_Density Cubes & Cylinders Polished copper calorimeter at 75Concave glass mirror, 75mm diameter and 300mm focal length, ~3mm thick, the f 4 curvature stretching the focal throw for projection style image formation and reflector telescope analogues.