while googling IR and h20, came the words:
water vapour absorption window (
926.0–
969.7 nm)
maybe thats why stan chose IR led's?
on an italian forum, i read:
"Pulsed potential impacts on the polarized, aligned water molecules not only extend electronsphere ITS, ITS raising quantum state, But Also Affect the photoelectron yield of the water, in effect rendering it more susceptible to photodissociation Than it is in a normal ground state.
With photon emission occuring from Oxygen upon liberation, the quantum efficiency of photolysis becomes greater than one, with each dissociated water molecule triggering the dissociation of others.
The peak absorption point of this photosensitivity is Believed to be in the Infrared, around 900nm, Which does not correspond with That of normal water, Which Is in the UV portion of the spectrum."