Steps to Visible Aquaphotomics

This article discusses one of the most popular methods for studying water - spectrophotometry. Already known as a fact that water is strongly absorbing at most of the wavelengths in the electromagnetic spectrum. The water molecule, in the gaseous state, has three types of transition that can give rise to absorption of electromagnetic radiation: rotational transitions, vibrational transitions and electronic transitions. In liquid water the rotational transitions are effectively quenched, but absorption bands are affected by hydrogen bonding. In this paper, we mainly consider the behavior of the spectral characteristics of liquid water in the visible range of the spectrum. The results discussed in this article show the influence of the path length on the water spectral characteristics in the visible range.