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7 Terrifying Historical Figures

October 29, 2012

By Evan Andrews

History.com

They say that truth is stranger than fiction, but it might also be spookier. History is filled with accounts of barbarians, murderers and sorcerers who make the vampires and slashers of Hollywood horror movies look positively tame by comparison. 1,614 more words

History

Measuring DC motor voltage with an oscilloscope

My current setup involves an analog controller board that is driving a DC motor and I would like to monitor the voltage being applied to the motor at all times. 90 more words