2 "Ficheiro:Experiments_with_Alternate_Currents_of_High_Potential_and_High_Frequency_-_Fig_2.png".

Ficheiro:Experiments with Alternate Currents of High Potential and High Frequency - Fig 2.png

English Fig. 2.—Imitating the Spark of a Holtz Machine. described at URL: https://en.wikisource.org/wiki/Page:Experiments_with_alternate_currents_of_high...

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