Wednesday, June 24, 2009

Birds 1, Quantum Physicists 0

Turns out migratory birds might be better at entangling quantum particles than us, and they've been doing it for a long time.

Apparently their eyes can see the earth's magnetic field because they have structures in their eyes that can create entangled electrons from incident photons. As these electrons split apart, they remain entangled but are effected differently by earths magnetic field. This difference effects the electrical signal going to their brain, and is then translated into something the bird can see.

Wild. How did something like that evolve? This is very illustrative of the idea that the way we (or animals) understand the world around us is really only an approximation of reality, and through evolution we have taken advantage of whatever sources of information we can that prove to be useful from a survival perspective.

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