Light Bulb
![Picture](/uploads/2/0/8/2/20829150/1397174274.jpg)
A Bright Idea....Thomas Edison invented the light bulb in October 22, 1878. It lasted 13.5 hours. He didn't invent the first bulb, He invented the first incandescent light bulb. He used bamboo, because of the carbon. His light bulb lasted only 1,200 hours.
short circuits
![Picture](/uploads/2/0/8/2/20829150/8757942.jpeg?151)
A short circuit will damage the part(s) in a circuit and/or cause the batteries to run out quickly or die.
Just like pressure, if it went both ways and pushed then it would explode.
Just like pressure, if it went both ways and pushed then it would explode.
batteries
![Picture](/uploads/2/0/8/2/20829150/8137520.jpeg?378)
Batteries power portable electrical devices. There are many types some sown in the picture on the left.