Beta

So what'll happen to the length of the coil?
It'll increase or go down
It'll get longer again, then at a point
It'll go straight up again
It'll back up again
So it'll go up and down

Okay, I'm gonna turn on the switch and watch what happens
Hey, that's something
Look at it going down
Gee, it really is jumping, Dad
That's right, now that's because we have electricity
Going through the wires and creating magnetism
Pulling the wires together and making it jump up and down