[permaculture] oops - Cabbage Maggots cont'd

Jay Woods woodsjay at cox.net
Wed Mar 26 06:57:32 EDT 2008


Sunlight has most of the energy in the infrared and water absorbs strongly in 
the 1400-1500 nm region between Near infrared and Mid-infrared. (It isn't 
used in spectral mapping because it absorbs so strongly as to swamp (ha-ha) 
everything else out.)

http://en.wikipedia.org/wiki/Multi-spectral_image#Spectral_bands

On Tuesday 25 March 2008 07:37:40 am Dieter Brand wrote:
>   What is this business about the black appearance of water in infrared?
>   Is this some kind of test you do?
>



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