This time we are looking on the crossword puzzle clue for: Water color.
it’s A 11 letters crossword definition.
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Last seen on: –LA Times Crossword 6 Oct 20, Tuesday
–The Washington Post Crossword – Oct 6 2020
–NY Times Crossword 21 Sep 20, Monday
–Wall Street Journal Crossword – January 08 2020 – Thanks, But No Thanks
Wall Street Journal Crossword – June 22 2019 – Terminus
Random information on the term “Water color”:
The color of water varies with the ambient conditions in which that water is present. While relatively small quantities of water appear to be colorless, pure water has a slight blue color that becomes a deeper blue as the thickness of the observed sample increases. The blue hue of water is an intrinsic property and is caused by selective absorption and scattering of white light. Dissolved elements or suspended impurities may give water a different color.
The intrinsic colour of liquid water may be demonstrated by looking at a white light source through a long pipe that is filled with purified water and closed at both ends with a transparent window. The light turquoise blue colour is caused by weak absorption in the red part of the visible spectrum.
Absorptions in the visible spectrum are usually attributed to excitations of electronic energy states in matter. Water is a simple three-atom molecule, H2O, and all its electronic absorptions occur in the ultraviolet region of the electromagnetic spectrum and are therefore not responsible for the colour of water in the visible region of the spectrum. The water molecule has three fundamental modes of vibration. Two stretching vibrations of the O-H bonds in the gaseous state of water occur at v1 = 3650 cm−1 and v3 = 3755 cm−1. Absorption due to these vibrations occurs in the infrared region of the spectrum. The absorption in the visible spectrum is due mainly to the harmonic v1 + 3v3 = 14,318 cm−1, which is equivalent to a wavelength of 698 nm. In liquid state at 20°C these vibrations are red-shifted due to hydrogen bonding, resulting in red absorption at 740 nm, other harmonics such as v1 +v2 + 3v3 giving red absorption at 660 nm. The absorption curve for heavy water (D2O) is of a similar shape, but is shifted further towards the infrared end of the spectrum, because the vibrational transitions have a lower energy. For this reason, heavy water does not absorb red light and thus large bodies of D2O would lack the characteristic blue colour of the more commonly-found light water (1H2O).