Electrostatic Force Flow Visualization
Keywords: coherent thread, corona, electron theory, high-voltage, ion flow, schlieren imagery
Yost examines the discharge from the electrodes of a DSI Wimshurst generator. Schlieren imaging reveals a coherent thread constantly emanating from charged, pointed negative electrodes, and cumulus puffs at the negative electrode upon discharge. Corona effects of different-shaped cathodes and anodes are observed in the dark under a microscope.