Double Extra Dense Flint Glass Prism, 1.25", R=1.71-1.74 Prong_3 sized for large-scale demonstrations of

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

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

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

exposing the longitudinal and transverse components of wave motion mechanically

Double Extra Dense Flint Glass Prism, 1.25", R=1.71-1.74 Prong_3 sized for large-scale demonstrations ofDouble 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.