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

supporting variable audio modulation 1Hz-1kHz plus a 250kHz square wave for speed-of-light measurement work

Hand-cranked to convert mechanical work into electrostatic energy

Cork-jawed safety tongs measuring 12 inches in stainless steel accommodate both round-bottom flasks and straight-sided beakers

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.