What IS Angular Momentum?
http://audible.com/minutephysics EDWARD SNOWDEN book on Audible: http://www.audible.com/pd/Nonfiction/No-Place-to-Hide-Audiobook/B00MEL9RTI/ref=a_search_c4_1_1_srTtl/191-2173915-6184263?qid=1421950...
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Physics, at its most basic, is just a description of the motion of the stuff in our universe.“This planet goes this way, that rocket goes that way” – except that some – infact, many – objects move without moving. Or, more precisely, they move without goinganywhere.I’m talking objects that spin, revolve, rotate, pirouette, orbit, circle, gyrate,whirl, twirl, cartwheel, and so on. Like a planet around a star, an electron in an atom,or even our solar system going around the gravitational center of the milky way: fromup close they’re certainly moving, but in the grand scheme of things, that motion doesn’ttake them anywhere.We can still talk about it, though: just like “momentum” is a concept that describeshow much oomph an object has when it move...
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Physics, at its most basic, is just a description of the motion of the stuff in our universe.“This planet goes this way, that rocket goes that way” – except that some – infact, many – objects move without moving. Or, more precisely, they move without goinganywhere.I’m talking objects that spin, revolve, rotate, pirouette, orbit, circle, gyrate,whirl, twirl, cartwheel, and so on. Like a planet around a star, an electron in an atom,or even our solar system going around the gravitational center of the milky way: fromup close they’re certainly moving, but in the grand scheme of things, that motion doesn’ttake them anywhere.We can still talk about it, though: just like “momentum” is a concept that describeshow much oomph an object has when it move...
