Slashdot Mirror


When the Earth Was Purple

Ollabelle writes "It's always been a bit of a mystery why plants absorb red and blue light, reflecting green, when the sun emits the peak energy of the visible spectrum in the green. A new theory offers one possible answer: that the first chlorophyll-utilizing microbes evolved to exploit the red-and-blue light that older green-absorbing microbes didn't use, eventually out-competing them through greater efficiency and the rise of oxygen."

5 of 278 comments (clear)

  1. ATTN: SWITCHEURS! by Anonymous Coward · · Score: -1, Troll

    If you don't know what Cmd-Shift-1 and Cmd-Shift-2 are for, GTFO.
    If you think Firefox is a decent Mac application, GTFO.
    If you're still looking for the "maximize" button, GTFO.
    If the name "Clarus" means nothing to you, GTFO.

    Bandwagon jumpers are not welcome among real Mac users. Keep your filthy, beige PC fingers to yourself.

  2. Re:Plants on other planets by cluckshot · · Score: -1, Troll

    Actually the answer here lies in a very simple understanding of the earth and why the sky is blue. The reason is extremely simple. The sky is blue because it is fluorescent in the blue and green bands due to X and UV radiation emissions from the sun affecting the lower atmosphere (Generally below 60,000 feet). This process produces a strong optical appearance of a "Blue Sky" but for exactly the same reason that the the primary paint colors are Red Yellow and Blue while the light primary colors are Red Green and Blue (See your color Video Monitor for details) this makes plants green. They are focused on the primary solar emission that is near omni directional during the daytime on earth.

    I know somebody will argue that the sky is blue due to scattering. It isn't! It is blue because it glows. This is obvious at higher altitudes. By 45,000 feet in flight, the upper sky is black. The glow is obvious. This is also obvious by shots from the space station of the curve of the earth. It actually has color layers.

    This process of atmosphere glows is responsible for the massive bloom of life in the arctic regions of the earth. The Aurora produce a strong set of emissions in the UV and IR bands that supply the life with its energy. The emission strength in the Arctic bands near the Aurora is nearly equal on a 24/7 basis to the emissions of light received at the tropical regions. These blooms of life associated with light are 1:1 and obvious. The Temperate Latitudes get most of this Blue Sky glow on earth and they get it seasonally. The result is that the region grows the most plant life. The Arctic regions get their glow on a fairly cyclic basis which is associated with March 21 and Sept 21. This corresponds to the migrations and breeding seasons of the animals and plants in the regions. This is also why they tend to be off synchronization with the normal "solar cycle".

    These emissions of the atmosphere are related to Plasma Charges approaching the earth in space and with the non-visible emissions of the sun being converted to visible emissions. The sun in space is actually in the visible band quite a dim star. On earth it is much brighter due to the conversion of frequencies.

    --
    Never Politically Correct ~ I prefer the facts If you don't like what I say, get a life, or comment yourself.
  3. Re:Plants on other planets by kt0157 · · Score: 0, Troll

    "You wouldn't find any microbes on Europe because in our frame of reference they too would be very natural."

    I think you'll find there's intelligent life in Europe. More than you'll find in the US, anyway.

  4. Re:Still fighting old battles by Anonymous Coward · · Score: -1, Troll

    Fuuuuck you.

  5. Re:Still fighting old battles by Anonymous Coward · · Score: -1, Troll

    You can't even *spell* atheist. Moron.