[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.)


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?

More information about the permaculture mailing list