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=...
Orcas are dolphins they are called killer whales because of their size and how they kill. They kill use mostly their weight and the strength of their jaws. An orca, or killer whale, is in the family Delphinidae, making it a dolphin by classification. However, all dolphins are in the order Cetacea, making all dolphins to be whales. Dolphins (and thus orcas) a family in the sub-order of toothed whales, which belongs to the order of whales.