Spherical Conductor, 8cm Diameter Subcategory_Sound and Resonance set in motion by ion

set in motion by ion wind from corona discharge whenever the apparatus is connected to a high-voltage source

this large-capacity polypropylene measuring jug carries raised graduations and tolerates autoclave

5 newtons for measuring small forces during spring-law and tension-force classroom investigations

Designed to make electric field lines visible

Five ceramic ring magnets at 1

Spherical Conductor, 8cm Diameter Subcategory_Sound and Resonance set in motion by ionPolished 8cm brass sphere on an ebonite insulated metal base, sized to retain induced charge through demonstrations of Coulomb's law and surface charge distribution.