Frost et al., 2002, wrote that "the band at 3262 cm -1 is most intense in the Raman spectrum and is assigned to the water OH symmetric stretching mode". Ogorodova et al., 2017, wrote that "the highfrequency line with maximum at 3138 cm -1 and shoulder near 3280 cm -1 correspond to the valence vibrations of OH-groups (in water molecules)". Due to these two affirmations, it is necessary to shortly consider the Raman spectrum of water.