An electric motor reduced to its essentials is a machine that turns energy into rotating motion. It achieves this by bringing a magnetic field to bear
We have a supercool experiment for your next science class, and this one is bound to be a winner! We have already shared ideas on this site for lighting up an LED
Well actually copper-coated zinc coins, to be honest. Because if pennies were solid copper, they would cost more than their value, and Dad might have to pay more tax.
We rely on digital clocks in all kinds of ways, and when their batteries go flat there’s a problem. They tell us when the fries are cooked, and who won the hurdle race.
A party balloon is a battery. Inflate one and release it in the air to convince yourself it is an energy storage system.
A battery as we generally know it contains one or more cells inside a case. These convert the energy in their chemicals into the electricity we use
If you decide to sleep out in a tent at the bottom of the garden, you may want to light a campfire. But if your matches get wet or the lighter runs out of fuel, what are you to do?
We have posted experiments on these pages involving connecting cell batteries in series. These demonstrate how electricity flows like water in pipes when connectivity is good.
Yesterday we wrote about hydrogen-oxygen fuel cells. We imagined how they might turn the energy world around
‘Science’ is a systematic approach for establishing, and testing knowledge about the universal world around us.