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.

• Hawkins Electrical Guide, Volume 6
• Chapter 63: Wave Form Measurement
• Page 1867, Figure 2625
• Copyright 1917 by Theo. Audel & Co.
• Printed in the United States

• Scanned by User:DMahalko, Dale Mahalko, Gilman, WI, USA -- Email: [email protected], on 22:39, 18 May 2008 (UTC)
• Scanned at 600dpi, 8-bit grayscale
• Level-adjusted and cleaned up

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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