Many objects around you contain electromagnets. They are found in electric motors and loudspeakers. Electric bells like the ones used in most schools also contain an electromagnet. The slideshow ...

If we're looking for one specific function or system that uses the most electricity, it's space heating and cooling. Keeping spaces comfortable can contribute to around 43 percent of the ...

Electricity is a type of energy that we use every day. Televisions, ovens and lights in your home all use electricity. Some electricity is made using methods that harm the planet. But we can help ...

In use, the electromagnet is powered up by a small 12-volt power supply, fixing the jig in place on the stock. The angle grinder is traced around and makes a surprisingly clean cut. Check out the ...

which is effectively a fancy electromagnet—and demonstrates how it creates sound waves in this way. Finally, the fourth station demonstrates the use of a microphone to record a voice ...