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Electronic Gadgets for the Evil Genius, 2E : 35 New Do-It-Yourself Projects by Robert Iannini

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CHAPTER 5
Field Detector (Ion, Electrical Field, Lightning, and Paranormal Disturbance Detector)
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Overview
Provides a low-cost method of detecting selectable electrical fields. This device detects both positive and negative electrical fields produced by ions, ultralow static fields, lightning, and other associated phenomena.
Hazards
No real hazards exist, with the exception of using this device during electrical storms or around other high-voltage sources (and this is just the physical hazard of holding a metal object under these conditions). Eye protection should be worn when making and testing this device.
Difficulty
Requires intermediate skills ...

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