Student Electrophorus Prong_2 Two pith balls suspended on

Two pith balls suspended on unspun silk from a brass pillar

Demonstrates the polarity-sensitive forward-bias behavior of a light-emitting diode on a base with two 4mm terminals

Polyhedral 120mL glass alcohol lamp ships with a metal cap and fiber wick for low-temperature bench heating in chemistry and biology demonstrations

the f/3 curvature stretching the focal throw for demos that need the focal point set comfortably beyond the mirror face

lets students compare how line density per unit length controls the spacing of the resulting interference pattern

Student Electrophorus Prong_2 Two pith balls suspended onStudent sized electrophorus with a 15cm plastic charge plate and a metal disc on an insulated handle, used to demonstrate charging by induction and repeated transfer of charge.