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09.03.2017, 11:19 - nieeshoes - Rank 6 - 1073 Posts , cheap jordans free shipping Starlings seem to have nothing in common with quantum matter, cheap wholesale jordans . But the equations explaining some of the quantum dynamics of superfluid helium may describe what happens when a flock of starlings makes a sharp turn, cheap retro jordans . Hundreds or thousands of starlings can flock together and appear to move through the sky as a single organism, cheap jordan shoes , shifting directions as though of one mind. “The moment the decision to turn is sweeping through the flock is a moment of weakness in the group,” says physicist Andrea Cavagna of the Sapienza University of Rome. He explains that during starlings’ turns, cheap air jordans , predators such as peregrine falcons can strike because the flock isn’t flying as cohesively as possible. Since sticking together during turns is so important, cheap jordans online , Cavagna and his colleagues wondered how information about which way and when to turn spreads through a flock. Previous computer simulations suggested that each bird’s behavior changes to match its neighbor’s in a manner that resembles the game of telephone: The cue to turn diffuses from one bird to the next but may fade out as it reaches the outer birds in a flock. But when Cavagna and his colleagues filmed 12 flocks, cheap jordans for sale , each with up to 500 starlings, cheap real jordans , and tracked the three-dimensional trajectory of each bird, the footage suggested something different. The birds turn as a nearly cohesive group, almost like synchronized swimmers. The decision to turn begins with a few birds and then travels through the flock at a fixed http://www.siempreluce...p;view=article&id=115 http://users.atw.hu/cr...orum_topic&topic=9864 http://www.regards-publicite.com/