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  1. #4
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    umm, its a bit weird.


    so they have one very common receptor (rods) with a detection maximum at 494 nm, thats blue, bordering on green.

    then they have cones. one kind at 551 nm, thats green. and one more rare kind at 380 nm, thats really surprising. thats ultraviolet, and its pretty much at the border of what humans can see when it comes to ultraviolets.

    so their lines are extremely sensitive in blue (close to green), with some green, and a little bit of UV, and its hard UV, at the limit of what humans can see. no red, orange, or yellow. really weird, i guess its tuned for night vision.

    when it comes to seeing the world in nice colors, these receptors are really bad choices. but at night it makes sense. when you want to make the most out of the little light you get at night, these receptors make sense. they also make sense when you want to watch the blue sky. and that rare receptor for ultraviolet would certainly be useful when you want to find a basking spot that is rich in ultraviolet.

    if i could choose my receptors, i would not choose blue, green and ultraviolet. flowers and fruits look boring, blood looks black. but for a nocturnal reptile it somehow makes sense.
    The Big Bang almost certainly (beyond reasonable doubt) happened 13.7 billion years ago. If you disagree, send me a PM.
    Evolution is a fact, evolutionary theory explains why it happens and provides four different lines of evidence that coalesce to show that evolution is a fact. If you disagree, send me a PM.
    One third of the global economy relies on technology that is based on quantum mechanics, especially quantum electrodynamics (electron-photon or electron-electron interactions). If you disagree, send me a PM.
    Time Dilation is real, it is so real that all clocks if they are precise enough can measure it, and GPS could not possibly work without it.
    If you disagree, send me a PM.

    The 4 philosophically most important aspects of modern science are: Evolutionary theory, Cosmology, Quantum mechanics, and Einsteins theory of general relativity. Understand these to get a grip of reality.

    my favorite music video is online again, its really nice: https://www.youtube.com/watch?v=oABEGc8Dus0


  2. The Following 4 Users Say Thank You to Pythonfriend For This Useful Post:

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