Hollow Acrylic Semi-Circle for Refraction Index Study, 3 x 1.5 x 1.75" Subject_Anatomy sized to fit standard calorimeters

sized to fit standard calorimeters for uniform liquid mixing during thermal experiments

2A rheostat with oxidized constantan winding on a 300x44mm vitreous-enameled tube

and home reading

this 80mm steel needle in a 6mm rod doubles as a precise alignment reference for image-formation and ray-tracing setups

sized as a generic spare in the PH1118 demonstration-meter scale series for swap-in classroom use

Hollow Acrylic Semi-Circle for Refraction Index Study, 3 x 1.5 x 1.75" Subject_Anatomy sized to fit standard calorimetersAcrylic semi circular block measuring 3 x 1. 5 x 1. 75 inches with a center indicator line, used to study Snell's law, total internal reflection, and critical angle behavior.