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=...
This particular pod is called the Southern Resident Killer Whales (SRKW) Granny is said to be the matriarch of the group and was spotted in the Strait of Georgia at the weekend. She is thought to have travelled around 800 miles up from California. The average lifespan of a wild orca is between 60 and 80 years.