Abstract

The accurate knowledge of the water absorption spectrum is of vital importance for many branches of science and technology. Although it was investigated by different techniques, particularly between 300 – 450 nm, there is still significant disagreement between various studies [1–4]. From 3 to 0.3 mm, the water absorption coefficient drops 8 orders of magnitude, reaching a minimum at ~ 0.4. However, the wavelength and value of the minimum absorption is still unclear.

© 2009 IEEE