When you sail with a magnetized needle, it will point towards the magnetic north pole. This is because the needle aligns itself with the Earth's magnetic field, which is used for navigation purposes.
A compass has a magnetized needle that can spin freely.
A compass has a magnetized needle that can spin freely.
The magnetic field of earth exerts a torque on the needle, pulling one end or pole of the needle toward the Earth's North magnetic pole, and the other toward the South magnetic. The needle is mounted on a low-friction pivot point, in better magnetized needle a jewel bearing, so it can turn easily. When the magnetized needle is held level, the needle turns until, after a few seconds to allow oscillations to die out, one end points toward the North magnetic pole.
a compass
Compass
It is still a needle, but could be referred to as a compass needle.
Answer:A compass needle can be made from any ferrous metal that can be magnetized.
compass
(:magnetic field :)
By observing a compass needle.
1. A device using a magnetized needle to point to the direction of magnetic north (which is actually a south pole, but that's another story). 2. A device for drawing circles.
An ordinary steel sewing needle is easy to magnetize.