Quantcast

Latest Phase changes Stories

2012-05-25 10:32:35

Scientists at the Georgia Institute of Technology achieved a 17-percent increase in boiling efficiency by using an acoustic field to enhance heat transfer. The acoustic field does this by efficiently removing vapor bubbles from the heated surface and suppressing the formation of an insulating vapor film. As reported in the American Institute of Physics' (AIP) journal the Physics of Fluids, bubble removal was enhanced because the acoustic field induces capillary waves on the bubble, causing...

Weird World Of Water Just Got Weirder
2011-11-09 13:59:02

Strange, stranger, strangest! To the weird nature of one of the simplest chemical compounds -- the stuff so familiar that even non-scientists know its chemical formula -- add another odd twist. Scientists are reporting that good old H2O, when chilled below the freezing point, can shift into a new type of liquid. The report appears in ACS' Journal of Physical Chemistry B. Pradeep Kumar and H. Eugene Stanley explain that water is one weird substance, exhibiting more than 80 unusual...

2010-06-24 04:25:33

Hydrogen is the most abundant element in the universe and is a major component of giant planets such as Jupiter and Saturn. But not much is known about what happens to this abundant element under high-pressure conditions when it transforms from one state to another. Using quantum simulations, scientists at the Lawrence Livermore National Laboratory, the University of Illinois at Urbana-Champaign and the University of L'Aquia in Italy were able to uncover these phase transitions in the...

4f06e846ecbaf6a3bc5bc75ac6c181421
2010-05-22 08:43:02

Physicists from the University of Pennsylvania and Hong Kong University of Science and Technology have reported an elegant experimental study of the melting behaviors of thin crystalline films, uncovering a variety of interesting differences between thick films of greater than four layers and thinner or single-layer films. Put simply, thin crystalline films melt differently depending on thickness.  The scientists made crystalline films from closely packed micron size gel beads. ...

2010-04-21 13:55:56

Supercooling, a state where liquids do not solidify even below their normal freezing point, still puzzles scientists today. A good example of this phenomenon is found everyday in meteorology: clouds in high altitude are an accumulation of supercooled droplets of water below their freezing point. Scientists from the Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), the Centre National de Recherche Scientifique (CNRS) and the ESRF have found an...

2010-03-03 13:41:11

KINGSTON, ON "“ The same antifreeze proteins that keep organisms from freezing in cold environments can also prevent ice from melting at warmer temperatures, according to a new Queen's University study. The study presents the first direct measurements of the superheating of ice crystals in antifreeze protein solutions. Superheated ice crystals can be stabilized above the melting point for hours, at a maximum temperature of about +0.5 degree Celsius. "You can hold the ice crystal at...

2010-03-01 16:14:20

Scientists publish first direct measurements of 'superheating' phenomenon The same antifreeze proteins that keep organisms from freezing in cold environments also can prevent ice from melting at warmer temperatures, according to a new Ohio University and Queen's University study published today in the Early Edition of the journal Proceedings of the National Academy of Sciences. Antifreeze proteins are found in insects, fish, bacteria and other organisms that need to survive in cold...

2009-12-18 13:58:59

Using a microscope the size of a football field, researchers from The University of Western Ontario are studying why some insects can survive freezing, while others cannot. Why is this important? Because the common fruit fly (Drosophila melanogaster) is one of the bugs that cannot survive freezing and the little creature just so happens to share much of the same genetic makeup as humans, therefore finding a way to freeze them for research purposes is a top priority for geneticists the world...

cd0be91faf926fc87e6778aff2c490b11
2009-11-24 08:48:11

Water expands when it freezes. Anyone who has ever left a can of soda or bottle of water in the freezer too long has witnessed this first hand. So how do plants and animals survive severe temperatures? Insects exposed to subzero temperatures can adapt to the extreme climate to survive freezing temperatures, but until now, antifreeze molecules had not been isolated from freeze-tolerant animals. The NSF-supported study, published in the November 24 issue of Proceedings of the National Academy...

2009-01-22 03:15:00

AMSTERDAM, January 22 /PRNewswire/ -- Avantium Technologies announces the launch of a new system to study crystallization processes for the pharmaceutical industry. The system will be marketed under the name Crystalline. The Crystalline has been designed to address the need in the pharma industry to learn as much as possible about a drug candidate early in the development cycle. "Avantium is proud to launch its next system in crystallization research. The Crystalline follows the...


Latest Phase changes Reference Libraries

0_a883504f1809bc568bef5ad20d53ef9a
2009-07-18 14:15:52

Water vapor (aqueous vapor) is the gaseous phase of water. It is one stage of the water cycle of our planet. Water vapor is formed from either evaporation or heating of liquid water, or from the sublimation of ice. In nature, water vapor is continuously produced by evaporation and removed by condensation. Along with carbon dioxide and methane gas, water vapor is one of the greenhouse gases. The release of water molecules from liquid water is considered evaporation. The transition of these...

22_b97fdf1ae7f75e8dc5fe481d4f9ae46c
2009-07-06 16:28:37

Condensation is the change of the physical state of matter from a gaseous form into liquid form. When the transition of matter happens from gaseous to solid directly, it is known as deposition. Condensation occurs when a vapor is cooled or compressed to its dew point. Water vapor that naturally condenses on cold surfaces into liquid is called dew. Water vapor will only condense on another surface when the temperature of the surface is cooler than the temperature of the water vapor. Water...

More Articles (2 articles) »
Word of the Day
barghest
  • A goblin in English folklore, often appearing in the shape of a large dog and believed to portend imminent death or misfortune.
  • A ghost, wraith, hobgoblin, elf, or spirit.
The origin of 'barghest' is not known, but it may be from perhaps burh-ghest, town-ghost, or German Berg-geist (mountain spirit) or Bär-geist (bear-spirit).
Related