- #1
Hornbein
- 2,070
- 1,694
A compass needle can be magnetized to point to the north. Am I correct in thinking that the needle could have been magnetized to point to any other horizontal direction?
Right, this is what I had in mind.Ibix said:I don't see why you couldn't magnetize a piece of iron so that its field was not parallel to the long axis.
To magnetize a compass needle, you can use a strong magnet and stroke it along the needle in one direction several times. This will align the magnetic domains in the needle and make it magnetic.
Yes, any strong magnet can be used to magnetize a compass needle. However, it is recommended to use a bar magnet or a neodymium magnet for best results.
The process of magnetizing a compass needle can take a few minutes. It depends on the strength of the magnet used and how many times it is stroked along the needle.
A compass needle needs to be magnetized in order to accurately point towards the Earth's magnetic north pole. Without magnetization, the needle would not have a consistent direction and would not be able to function as a compass.
Yes, a compass needle can lose its magnetism over time due to exposure to strong magnetic fields or physical damage. It is recommended to regularly check and re-magnetize the needle if necessary to ensure accurate readings.