Have you ever wondered how an engine starter motor works to bring your car to life? In this video ... the electrical circuit that powers the starter motor and how the starter relay and ignition switch ...

Physicists and Albert Einstein (search) buffs began flipping light switches and dialing phones in an attempt at a worldwide relay of lights to commemorate the World Year of Physics and the 50th ...

Justin Bieber, Jesse Tyler Ferguson, Jimmy Fallon Rev Their Engines for NASCAR Relay Race (Video) The stars teamed up with Sprint Cup drivers Jeff Gordon, Kevin Harvick, Martin Truex Jr. and Kyle ...