The holes on the prongs of your electrical plugs may look random, but there's a clear reason they were created and why they ...

Ever tried to plug in an appliance, only to realize you had the plug backwards on the first try? Modern outlets use this ...

Not all outlet holes are the same, and there's a reason for that. The shapes (vertical slots, round holes, T-slots, etc.) correspond to specific electrical functions and safety features. Take the ...