Double Extra Dense Flint Glass Prism, 1.25", R=1.71-1.74 Prong_3 dropping a chosen capacitor into

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

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

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

sized for large-scale demonstrations of elastic potential energy and simple harmonic motion

Collisions kit with a 48-inch track

Double Extra Dense Flint Glass Prism, 1.25", R=1.71-1.74 Prong_3 dropping a chosen capacitor intoDouble 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.