Most microphones work the same way. They have diaphragms that vibrate when sound strikes them.
Yesterday we wrote about hydrogen-oxygen fuel cells. We imagined how they might turn the energy world around
Alessandro Volta made the world’s first battery in 1791. We don’t know why he piled alternating copper and zinc disks atop each other.
Samuel Morse hit on the idea of transmitting coded messages down a wire in 1836. This was better than sending letters with Pony Express
‘Science’ is a systematic approach for establishing, and testing knowledge about the universal world around us.
Electrochemistry is a big topic and not always easy to understand. In simple terms, it is the study of chemical reactions during an exchange of electricity
Not so long ago we wrote about using magnets, a battery, and copper wire to make a simple train. Today we are going to explain how to turn a battery into a roller toy.
To make a simple electric train not as complicated as the picture, and have endless fun with friends you need three simple things.
Splitting water sounds as crazy as cutting it with a knife, because it will flow back again together. Here we are talking about splitting water (H2O) into hydrogen (H) and oxygen (O)
An electric motor stripped to its essentials is a device a magnetic field causes to rotate. All the other bits are purely mechanical.