Magnetic Field of a Bar Magnet

Magnetic Field of a Bar Magnet, By Sam

Apparatus:
Aluminum cooking pan
2 bar magnets
Canon Camera
Scotch Tape
Paper
Steel Brads
Electric Toothbrush
Filings

Instructions:
Tape 1 bar magnet to pan
Put 1 brad in pan
Turn brad to WE, it won't work, it turns to NS
Then put a handful of brads on pan
Take electric toothbrush
Turn electric toothbrush on
Place electric toothbrush hard on pan
Keep pushing and see what happens

Observations
What happened with the brads is they take shape of the magnetic force and make an awesome pattern. What happened with the filings is they do the same thing but they are smaller and don't get clumped up as much. Why it happens is the magnetic force pulls the iron onto itself and they stay

Observations from C:
Brads make circular patterns in pan when vibrated.
Iron filings will make cross section of a magnetic field.