electromagnet

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Electromagnets – electricity and magnets

By |2018-05-31T11:49:20+00:00August 16th, 2017|History|

An electromagnet from inside a stereo speaker In the early 1800s AD, about 200 years ago, scientists in Denmark and Britain figured out another way to make magnets. This way you didn't need a lodestone. You could also make much stronger magnets. And you could turn the magnets on and off. The new way [...]

Electromagnet project – Electricity – Science

By |2018-05-31T11:49:13+00:00August 16th, 2017|Physics|

Build your own electromagnet with a nail, some copper wire, and a battery You can build your own electromagnet. Get about five meters of copper magnet wire (you can buy it at Radio Shack or Home Depot), a large iron nail or another piece of iron about the same size like a butter knife, a rubberband, some sandpaper, [...]

What is a battery? Electricity

By |2018-05-31T11:49:20+00:00August 16th, 2017|Modern Europe, Science|

A Leyden Jar - an early kind of electric battery In the early 1800s AD, about 200 years ago, scientists in Denmark and Britain figured out another way to make magnets. This way you didn't need a lodestone. You could also make much stronger magnets. And you could turn the magnets on and off. [...]