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=...
Most people call the larger cetaceans whales, and the smaller ones dolphins. However, some species that we call whales actually belong to the dolphin family. In New Zealand there are five such whales: the killer whale (orca), short-finned pilot, long-finned pilot, false killer and melon-headed whales.