Electrical Engineering - Re: Please answer my rational question [was Re: AM radio: astronomically-high frequency modulator s

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Re: Please answer my rational question [was Re: AM radio: astronomically-high frequency modulator s

Bill Ward

2007-06-27, 5:25 pm

On Wed, 27 Jun 2007 17:25:07 +0000, Willie.Mookie wrote:

<snip>

> ... life of course has adapted to the sun by using photosynthesis to use
> the dominant wavelength of the sun, around 550 nm (leaf green).to
> convert light to chemical energy. We tap into that energy today when
> we burn decayed leaves that have been trapped underground for millions
> of years.

Not quite. If green light were absorbed, leaves wouldn't appear green.
It's mostly the red-orange (650-680nm) that's absorbed, transmitting and
reflecting the green light.

This should clarify it for you:

http://kentsimmons.uwinnipeg.ca/cm1504/Image172.gif

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