Hollow Acrylic Semi-Circle for Refraction Index Study, 3 x 1.5 x 1.75" Subject_Anatomy 2A rheostat with oxidized constantan

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

packaged in a hard plastic case with standard-size pieces

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

3125 inch thickness

Double-walled in aluminum to minimize heat exchange with the surrounding air

Hollow Acrylic Semi-Circle for Refraction Index Study, 3 x 1.5 x 1.75" Subject_Anatomy 2A rheostat with oxidized constantanAcrylic 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.