Sharks are often attracted by low-level electromagnetic fields surrounding underwater electric cables and are sometimes electrocuted when they mistake the conduit for living prey and bite into it. Many fish have lateral lines on either side of their bodies that are composed of magnetite, which ...
In her 2010 action thriller "Salt," Angelina Jolie plays a CIA officer accused of being a Russian spy who must prove her innocence while on the run. To prep for fight scenes, Jolie had to learn a combination of Muay Thai and Krav Maga, and some of her stunts included walking on a na...
Electrical engineers understand the high frequencyskin effect. The skin being the round outer layer or edges of the conductor. A copper wire conducts DC electricity throughout the wire. But AC electricity travels more along the outside of the wire, depending on the frequency. The higher the fre...