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Critical Point

All articles tagged with #critical point

Water's Hidden Critical Point Revealed: Evidence of a Dual-Liquid Phase in Supercooled Water
science11 days ago

Water's Hidden Critical Point Revealed: Evidence of a Dual-Liquid Phase in Supercooled Water

Scientists report new evidence for a hidden critical point in supercooled water, supporting a liquid-liquid transition between high- and low-density forms and revealing a slowed, critical region near -63°C at around 1000 atm. Using rapid heating and ultra-fast X-ray snapshots, researchers observed the transition before freezing, narrowing the boundary of this mysterious state and enhancing our understanding of water’s peculiar behavior and its broader implications.

Water Reveals Dual Liquid States at Ultra-Cold Conditions
science12 days ago

Water Reveals Dual Liquid States at Ultra-Cold Conditions

Scientists using ultrafast X-ray lasers observed water in the deeply supercooled regime and found evidence for a critical point between two distinct liquid states that merge at that point; these fluctuations between the two forms help explain water’s abnormal properties, including why ice is less dense than liquid water and how water’s dynamics slow near the critical state.

The Universe's Transformative Shift: Neutron Decay and Currents.
physics2 years ago

The Universe's Transformative Shift: Neutron Decay and Currents.

Physicists at the Relativistic Heavy Ion Collider (RHIC) are studying phase changes in nuclear matter from gold ion collisions to identify a critical point in these transformations. Their research, involving recreating and examining the transition of quark-gluon plasma, a state of matter present after the Big Bang, suggests that fluctuations in the formation of lightweight nuclei could indicate this critical point. Certain data deviations hint at potential fluctuations, but further research is required to confirm a discovery.