There are electromagnets inside stereo speakers When did people invent electromagnets? In the early 1800s AD, about 200 years ago, scientists in Denmark and Britain figured out another way to [...]
Build your own electromagnet with a nail, some copper wire, and a battery What will I need? You can build your own electromagnet. Get about five meters of copper magnet wire (you can [...]
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. [...]
