By Gerard Fonte View In Digital Edition
This is one of those things that seems just a little interesting at the start, but, as you look closer, it gets stranger and stranger. It’s a simple, plain, plastic box. It has a knob, LED, and power connector. When you turn it on, it doesn’t seem to do anything at all. It just sits there. However, put an empty soda can on the machine and lightly rub it with a dry finger. The can vibrates. Yet, this does not happen with a stationary finger or a damp finger.
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