Double Extra Dense Flint Glass Prism, 1.25", R=1.71-1.74 Prong_3 Hand-cranked friction-wheel drive sandwiched between

Hand-cranked friction-wheel drive sandwiched between clear acrylic plates

this insulated wire keeps polarity color-coded across short branches in 4mm-socket student circuits

used to study Snell's law

Collisions kit with a 48-inch track

dropping a chosen capacitor into a circuit without unsoldering during introductory RC-circuit and resonance investigations at the bench

Double Extra Dense Flint Glass Prism, 1.25", R=1.71-1.74 Prong_3 Hand-cranked friction-wheel drive sandwiched betweenDouble extra dense flint glass prism at 1. 25 inch sides with refractive index between 1. 71 and 1. 74, the heaviest leaded flint giving the strongest dispersion in the comparison kit.