Re:Why are plants green? To reduce the noise in photosynthesis
by layer8 on Saturday October 01, 2022 @08:46PM
(#33051612)
All stars have approximately a blackbody curve as their spectrum. The sun’s spectrum happens to peak around green, and our eyes are calibrated to interpret that as neutral (white). Other stars can only have that peak shifted towards blue/violet (when hotter) or towards yellow/orange/red (when cooler), which to our eyes correspondingly looks more blue/violet or more yellow/orange/red. If our sun peaked at red or blue, we would probably be able to see green stars.
Re:Why are plants green? To reduce the noise in photosynthesis
by currenciessfe on Saturday October 01, 2022 @09:14PM
(#33051768)
The color of noon sun light on earth is literally the definition of white balance (6500K). So it doesn't appear yellow, unless you talk about sunset.
Re:Why are plants green? To reduce the noise in photosynthesis
by AuryGlenz on Monday October 03, 2022 @12:52AM
(#33063608)
It appears yellow if your eyes are adjusted to the color of the blue sky.
Re:Why are plants green? To reduce the noise in photosynthesis
by RRWagner on Saturday October 01, 2022 @11:35PM
(#33052584)
We view stars through the same atmosphere as the sun. Why aren't stars orange when near the horizon?
Re:Why are plants green? To reduce the noise in photosynthesis
by layer8 on Sunday October 02, 2022 @01:13AM
(#33053065)
They actuality are: https://en.wikipedia.org/wiki/Extinction_(astronomy)#Atmosph...
Re:Why are plants green? To reduce the noise in photosynthesis
by dgoldstein0 on Saturday October 01, 2022 @08:15PM
(#33051422)
There are no green stars because stars don't just emit one wavelength, they emit a range that has a peak somewhere. If the peak is green, they also emit similar amounts of red and blue light, and all combined the result looks white. Whereas there totally are blue stars and red stars out there, because those colors are at either end of the visible spectrum, and so you can get a lot more blue than red out of a star or vice versa.
The Sun appears yellow and orange because green, blue and red light is scattered by the atmosphere; in space, the Sun appears white like other stars. The questions are, if green is the most intense frequencies output by white stars, why are there no green stars? And why aren't plants yellow and/or orange?
Also, I find that gathering, preparing and eating food is expensive, inefficient and time consuming. How do I get chloroplasts? Why is no one working on this?!