You might have heard of electrets being used in microphones, but do you know what they are? Electrets produce a semi-permanent static electric field, similar to how a magnet produces a magnetic field.

You might have heard of electrets being used in microphones, but do you know what they are? Electrets produce a semi-permanent static electric field, similar to how a magnet produces a magnetic field.

Lightning is the simple process of balancing negatively and positively charged electrons in the atmosphere. We can do this on a small scale with electric shock on your finger when you and another ...

WORKING in tanks, manholes, and underground vaults are some of the most dangerous and potentially lethal occupations found in the industrial work environment. Federal, state, and corporate safety ...

Ancient Greeks discovered that when animal fur and amber were rubbed together, the fur could be used to attract feathers, glass dust and other lightweight objects. It wasn’t until 1600 AD, however, ...