What is magnetism – magnetism for kids

We use magnetism in so many ways that modern life would be impossible without it. We need magnetism to produce large amounts of electricity in power stations. There are magnets in compasses, loudspeakers, electric motors, refrigerator doors, computer disks, and…

How Batteries Work?

A battery may have just one cell or more than one. Many flashlight batteries, have only one cell. Each cell is made up of three main parts. Do you know how batteries make flashlights and other things work? When you…

What is Fiber Optics?

The baby in the picture hasn’t been born yet. It is still lying inside its mother’s womb.How could a photograph like this have been taken? The photograph was taken using flexible, transparent threads, or fibers, of glass. These are so…