Natural magnets, such as lodestones, have a permanent and persistence magnetic field. These permanent magnets can also temporarily magnetize material such as iron, nickel, and cobalt.
Magnets were not invented; they occur naturally in certain materials. However, humans have been using magnets for thousands of years for various purposes such as navigation, medicine, and industry. The discovery of the properties of magnets and their application in technology has led to their widespread use in modern society.
Because you know how magnets work.
Nickel is used more in magnets
Lodestones were the naturally occurring magnets that were known and used in earlier times. These stones possess the property of attracting iron and were a valuable resource for early compasses and navigation.
electronic magnets as they work with electricity produced
Hard magnets are permanent magnets that do not require electricity to retain their magnetism and are not easily demagnetized. They are magnetically charged naturally and can be artificially, too.
Magnets first occurred naturally, so "before Man" would be your answer.
Magnets
Metals naturally present in the human body, such as iron, are in very small quantities and not magnetic enough to be attracted to magnets in the way iron or steel objects would be. Therefore, they do not typically exhibit magnetic properties strong enough to be visibly attracted by magnets.
Magnets first occurred naturally, so "before Man" would be your answer.
Some are metal some aren't. Ceramic magnets are common. Magnetite is one naturally occurring rock that is a magnet. Most magnets are either metallic alloys or nonmetallic compounds of the elements Iron, Nickel, or Cobalt.
Like magnets.