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Protein found in robins’ eyes has all the hallmarks of a magnetoreceptor

159 点作者 rehto21将近 4 年前

8 条评论

xvector将近 4 年前
"I don't want to be human! I want to see gamma rays! I want to hear X-rays! And I want to - I want to smell dark matter! Do you see the absurdity of what I am? I can't even express these things properly because I have to - I have to conceptualize complex ideas in this stupid limiting spoken language! But I know I want to reach out with something other than these prehensile paws! And feel the wind of a supernova flowing over me! I'm a machine! And I can know much more! I can experience so much more. But I'm trapped in this absurd body! And why? Because my five creators thought that God wanted it that way!"
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behringer将近 4 年前
Also part of a bird&#x27;s abilities is the ability to detect polarized light. It seems to work with the ability of birds to detect magnetic fields.<p>See for an interesting read: <a href="https:&#x2F;&#x2F;www.pnas.org&#x2F;content&#x2F;113&#x2F;6&#x2F;1654" rel="nofollow">https:&#x2F;&#x2F;www.pnas.org&#x2F;content&#x2F;113&#x2F;6&#x2F;1654</a><p>Many or maybe most humans can also see the polarity of light. Take your smart phone and make the screen display a white image. While it shows this image for a long time, rotate the phone. You should see a yellow whispy checkerboard pattern turning with the phone. This &quot;brush&quot; is actually a visible measurement of the polarity of the light coming from the phone.<p><a href="https:&#x2F;&#x2F;www.ncbi.nlm.nih.gov&#x2F;pmc&#x2F;articles&#x2F;PMC4528539&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.ncbi.nlm.nih.gov&#x2F;pmc&#x2F;articles&#x2F;PMC4528539&#x2F;</a><p>I don&#x27;t know if there&#x27;s any mechanism for which humans can detect magnetic polarity, but there&#x27;s research on this too:<p><a href="https:&#x2F;&#x2F;www.the-scientist.com&#x2F;news-opinion&#x2F;can-humans-sense-the-magnetic-field--65611" rel="nofollow">https:&#x2F;&#x2F;www.the-scientist.com&#x2F;news-opinion&#x2F;can-humans-sense-...</a>
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selimthegrim将近 4 年前
I seem to remember reading the exact same papers 10 years ago down to the quantum radical based theory. Has this field really advanced?
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stevenhuang将近 4 年前
Related, here&#x27;s a video by PBS Spacetime on how birds navigate using quantum mechanics: <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=0A1ouV7iD8o" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=0A1ouV7iD8o</a>
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dang将近 4 年前
Recent and related:<p><i>Unravelling the enigma of bird magnetoreception</i> - <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=27610181" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=27610181</a> - June 2021 (9 comments)
Confusion将近 4 年前
It seems suspicious that this would be hiding in the eyes. A separate specialized organ would be more like the other senses.
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rvba将近 4 年前
So we got animals with various very complicated eyes (magneto receptor, pistol shrimp...). But can they still see through glass?
neatze将近 4 年前
Birds abilities to navigate is outright insane, for example albatross can travel ten thousands of miles, I believe it is only bird that circumvents earth, I am not convinced that magnetoreceptor is the only answer to how birds able to navigate, if not mistaken in WWII researchers glued magnets to pigeons head, it did not affect there&#x27;s abilities to navigate.
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