Water; has unusual exotic features (Introduction)

by David Turell , Monday, September 28, 2020, 18:26 (1516 days ago) @ David Turell

Water has two forms when cooled:

https://www.sciencenews.org/article/stop-motion-experiment-reveals-supercooled-water-du...

"Supercooled water may be a two-for-one deal.

"A long-standing theory holds that liquid water at temperatures well below freezing is composed of two different arrangements of molecules, one with high density and one with low density. Now, an experiment provides new evidence for that theory, researchers report in the Sept. 18 Science.

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"The researchers conclude that the water’s behavior as it was heated and cooled could be explained by the coexistence of two different molecular arrangements, as previously predicted. However, the team hasn’t directly measured the density of those structures, so more work is still needed to confirm whether the theory is correct.

“'The combination of techniques is quite new and original,” says chemical engineer Pablo Debenedetti of Princeton University, who was not involved with the study.

"Better understanding the strange properties of supercooled water might help scientists understand water’s quirks. For example, unlike most substances, water expands when it freezes, making it less dense than its liquid form. That’s the reason why ice floats in your cup and why it sits atop a lake, leaving a liquid layer underneath that can shelter aquatic life over the winter.

“'Water is a very strange liquid,” says physicist Greg Kimmel, a coauthor of the study, also at the Pacific Northwest National Laboratory. “But everybody’s familiar with it, so we don’t really realize how weird it is.'”

Comment: Without water, life can't exist. Our bodies are over 70% water. Along with quantum mechanics it is one of God's very strange inventions to create us.