On 10 June 2016 at 01:05, Mike Gordon via olympus <olympus@xxxxxxxxxxxxxxxxx
> wrote:
> Well not for sure, but looking likely that this is the case. Very
> curious paper published today shedding light on how birds and some
> insects navigate using magnetic fields.
>
>
> The use of magnetic fields in navigation by animals has been known for
> decades but the mode of signal transduction has remained a deep mystery.
> About 1978 Klaus Schulten is a German American computational biophysicist
> proposed that quantum entanglement of a radical-pair system could underlie
> a biochemical compass-- an editor is Science thought a less bold scientist
> would have "designed this piece of work for the waste basket."
> The paper was indeed NOT published in Science.
>
> It looks increasingly likely that this may indeed underlie how the signal
> from the avian cryptochromes are produced.
> So in brief light can create entangled electron pairs within the
> crypotchrome though radical pairs can also be generated by the
> light-independent dark reoxidation of the flavin cofactor by molecular
> oxygen through the formation of a spin-correlated FADH-superoxide radical
> pairs.
> The ambient magnetic field interacts differentially with the entangled
> electron pairs depending on their spin which in turn affects the lifetime
> of the activated cryptochrome--and then influences the visual signals. Thus
> the bird actually "sees" the magnetic fields.
> This seemed very bizarre at least in part as entangled electron pairs can
> be created the lab but the T1/2 of them is exquisitely short except near
> absolute zero. The paper today suggests these effects within the protein
> environment are indeed quite long enough to influence photochemical
> reactions.
>
>
> http://iopscience.iop.org/article/10.1088/1367-2630/18/6/063007?fromSearchPage=true
>
> Oh, here is something easier to read:
>
> http://www.physicscentral.com/explore/action/pia-entanglement.cfm
>
>
>
> So the bird outside you window may be navigating using "spooky action
> through a distance." You can't make this stuff up.
>
> Wish I had this ability to navigate the one-way cow paths of Boston, Mike
>
>
> --
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>
Jim Al-Khalili covered this, or something very likely in a recent BBC
documentary series on quantum mechanics. Here he is doing a TED talk on
the subject:
https://www.ted.com/talks/jim_al_khalili_how_quantum_biology_might_explain_life_s_biggest_questions?language=en
Nobody understands quantum mechanics. Richard Feynman said that, and he's
way cleverer than me.
ian
--
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