original passage: Heavy water lacks the characteristic blue color of light water; this is because the molecular vibration harmonics, which in light water cause weak absorption in the red part of the visible spectrum, are shifted into the infrared and thus heavy water does not absorb red light.
original sentence: Heavy water lacks the characteristic blue color of light water; this is because the molecular vibration harmonics, which in light water cause weak absorption in the red part of the visible spectrum, are shifted into the infrared and thus heavy water does not absorb red light.
sentence2: Does the color of heavy water depend on molecular vibrations taking place?
sentence1: Heavy water has the characteristic blue color of light water; this is because of the lack of molecular vibration harmonics, which in light water cause weak absorption in the red part of the visible spectrum. Thus, the spectrum shifts into the infrared, and heavy water do not absorb red light.