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=...
Sometimes they blow bubbles at them, possibly to frighten them into moving. Eating such prey is dangerous. A young female orca was found dead in the Hauraki Gulf with two stingray spines inside her. She died either because of blood loss from the spines penetrating her body, or because she was poisoned by the spines.