Extra Dense Flint Glass Prism, R=1.65 Prong_3 running on 220/240V mains for

running on 220/240V mains for laboratory experiment work

this brass cylinder on an ebonite-insulated base demonstrates Faraday-cage shielding and uniform-curvature charge density

sized for field measurements and outdoor physics investigations

Class-visible 12-inch demonstration meter with magnetically damped moving coil and Perspex front-and-back panels

5-meter bench on leveling-screw feet

Extra Dense Flint Glass Prism, R=1.65 Prong_3 running on 220/240V mains forHeavy flint glass prism at refractive index 1. 65, the leaded body delivering pronounced spectral separation for comparing dispersion against crown and flint baselines.