Thursday, March 21, 2013

Light bulbs

We just learned about the Electrical Circuit.

Another part of electricity is how light bulbs work.

Inside a light bulb there are two wires that send electricity two a wire in the middle called the filament

This makes the filament glow super bright. It is typically made of a special metal called tungsten. (Sounds like tongues ten) light bulb
(From: Wikipedia - light bulb)