LIGHTSWITCH!!!

A light switch is a very useful tool.  It makes turning on and off lights a breeze.  Without the light switch we would have to spend an extra ten seconds looking for another way to turn on or off a light.  Ten whole seconds!  That is too much time to be spending, looking for a way to turn on or off a light.  I bet Thomas Edison would be amazed with what we can do from his simple invention.  We have whole shows just dedicated on light and Edison was the first person to invent the incandescent light bulb.  The way a light switch works is that when the light switch is on the circuitry is all connected and the electricity can flow, when it is off then there becomes a break in the circuits which cuts off the flow of electricity.  It is a very cool invention that people take for granted every day.