There's is a huge magnet inside the planet Earth, this magnet has 2 ends... the Poles. Each one of them point to one different direction, the North Pole and the South Pole.
A compass is an object with a magnetic needle that is attracted to the Earth magnetic North.
We can find these instruments in all kind of places, from a big ship to a traveler pocket. Although the different sizes, uses and owners, all the compasses are the same: a magnetized needle rotating freely in a fixed point.
Today we are going to build a compass, homemade style.
What we need:
Et Voilá!
Try to do 4 or 5 compasses; do they always point same direction?
Enjoy!
A compass is an object with a magnetic needle that is attracted to the Earth magnetic North.
We can find these instruments in all kind of places, from a big ship to a traveler pocket. Although the different sizes, uses and owners, all the compasses are the same: a magnetized needle rotating freely in a fixed point.
Today we are going to build a compass, homemade style.
What we need:
- wine cork,
- metal needle,
- bowl of water, or plate,
- tape,
- magnet.
- First of all cut a slice of the wine cork, with about1/4in thick;
- Rub the needle in circular movements on the magnet; you will need to do 40 to 50 turns;
- Stick the needle to the cork slice with the tape;
- Drop the cork in the bowl with water, as figure shows; the needle can't touch the water,
- After a few seconds the cork will move to point magnetic pole.
Et Voilá!
Try to do 4 or 5 compasses; do they always point same direction?
Enjoy!
No comments:
Post a Comment