Figure 2625 -- Oscilliograph recorded on moving film
Portion of oscillograph record taken with cinematograph film camera, showing the effect of switching off a high-voltage feeder circuit, and illustrating the the violent fluctuations produced by sparking at the circuit's switch contacts.
For a list of all these illustrations used in Wikipedia please see the article Hawkins Electrical Guide on the English Wikipedia.
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=== Illustration Description === Figure 2625 -- Oscilliograph recorded on moving film Portion of oscillograph record taken with cinematograph film camera, showing the effect of switching off a high-voltage feeder circuit, and illustrating the the violent
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