Every star -- everything that emits light, really -- has its own spectrum, which tells you how energetic its light is at different wavelengths. Our Sun is most energetic at a wavelength of about 500nm, which corresponds to the color green. This has some interesting consequences for life here on Earth. For example, this is why most plants are green. Plants have chosen quantity over quality by reflecting the high-energy green photons and absorbing all the other abundant but low-energy photons.
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yeah totally fair, this is probably outside your day to day field. It is striking now I think about it that all the plants are green.
On a brief google it looks like chlorophyl has the (unique?) property of excited states corresponding to red AND blue light whereas presumably many chemicals have excited states corresponding to just one wavelength. And then chlorophyl happens to be green Got this from here, it's just a person talking on the internet but they seem to know what they're talking about: https://www.researchgate.net/post/Why_are_plants_green Plus we're just people talking on the internet lol
I'm not sure it's the most advantageous actually. I don't know if anyone has found a concrete answer to this yet, but if I had to guess, I'd say the advantage is that absorbing lots of low-energy colors means the plants can still get energy even if green light becomes unavailable? Even if that's not the case, it seems that plants are able to get all the energy they need by absorbing just the red, blue, and yellow photons.
Sorry I'm not quite following. Why is it evolutionarily advantageous for a plant to be green if that's the most energetic wavelength? Why wouldn't you want to absorb the highest energy (i.e. most common?) wavelength?