The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
60
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Energy is being wasted if a toaster is left plugged in after use.
21
There’s an internet-enabled jacket which gives you a “hug” every time a Facebook friend likes your status.
12
Sony researchers have developed a refrigerator that only opens when you smile.
9
The electric chair was invented by a dentist!
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