In quantum mechanics and particle physics, spin is an intrinsic form of angular momentum carried by elementary particles, composite particles, and atomic nuclei. Spin is one of two types of angular momentum in quantum mechanics, the other being orbital angular momentum. The orbital angular momentum operator is the quantum-mechanical counterpart to the classical angular momentum of orbital revolution: it arises when a particle executes a rotating or twisting trajectory. The existence of spin angu
The Famous Orca Fishing Boat from the Movie Jaws - A detailed model. Full Playlist: http://www.youtube.com/playlist?list=...
Their scientific name, Orcinus orca, comes from the mythical Orcus -- the Roman god of death and the underworld, who was also known as a punisher [source: Britannica ]. In North America, the indigenous Haida call them skana, which is a killer demon.here are plenty of depictions of people-friendly orcas, such as the movie Free Willy and SeaWorld's Shamu. So what did the orca do to get this frightening name? If you've ever seen the 1970s movie Orca, the Killer Whale starring Richard Harris and Bo Derek, you may already have an idea.