[TML] Alien ecologies

[Robert O'Connor]

Jerry Barrington wrote:
> No, it is not.  Did you look at the link I mentioned for chlorophyll's
> absorption spectra? 

No. I used graphs like these:
http://www.mbari.org/staff/ryjo/cosmos/Cabs.gif
http://upload.wikimedia.org/wikipedia/commons/4/4c/Solar_Spectrum.png

and compared them. I see no need to retract my earlier statement:

>> At the Earth's surface, the spectrum of light available for chlorophyll
>> to intercept is fairly well matched to its absorption spectrum.

Having very broad absorption spectra is unlikely for plausible energy 
transducing compounds (e.g. organic heterocycles with transition metal 
or group 2 metal ion reactive centres).


Robert O'Connor
medico, gamer