On Wed, Jun 06, 2018 at 08:26:34PM -0700, Brent Meeker wrote: > Interesting story. But hasn't the Sun been getting hotter, which would mean > moving from yellow toward green rather than the other way. And it's still > still more a yellow than green store.
The peak of the sun's spectrum is about 500nm, very much a green colour. That it appears yellow probably has more to do with preferential scattering of blue light by the atmosphere. Evolutionary speaking, ambient daylight should appear white. How much that has changed from ca 3 billion years ago, I'm not sure, except that the Sun is warmer now than then. > So why don't the red/blue pigmented > plants out compete the green ones. I think there must be more to it. Is > the chlorophyll pathway more efficient? > I think it has more to do with cyanobacteria being intolerant of oxygen, and plants not only being tolerant, but thriving in the presence of oxygen. I couldn't find a quick statement of whether cyanobacteria were more or less efficient than plants. -- ---------------------------------------------------------------------------- Dr Russell Standish Phone 0425 253119 (mobile) Principal, High Performance Coders Visiting Senior Research Fellow [email protected] Economics, Kingston University http://www.hpcoders.com.au ---------------------------------------------------------------------------- -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
