By summer 2005, researchers in the Fluids Research Laboratory at Virginia Tech will be able to look for evidence of water on Mars by examining submicroscopic bubbles in martian meteorites, determine whether fluids and silicate melts trapped in volcanic rock can help predict future eruptions, and locate buried mineral deposits using data from surface rocks. Robert Bodnar, University Distinguished Professor in the Department of Geosciences in the College of Science, has received equipment grants from the National Science Foundation (NSF) that will make the lab one of the best equipped for the study of fluid inclusions in the United States.
When minerals form on Mars or deep in a volcano on Earth, small droplets of fluid, vapor, or silicate may be trapped. These tiny, ancient samples contain the rock’s chemical history and represent time capsules from the moment they were sealed in a rocky envelope. Recovering that moment in time has been a long-term challenge for geoscientists.
"Scientists can learn a lot about the composition of such inclusions by observing their behavior during heating and cooling under the microscope," said Bodnar, "but to really learn what is going on, you have to do quantitative chemical analysis." Non-destructive techniques using lasers to approximate the compositions of inclusions have existed for many years. Now there is an instrument that goes a step further – actually digging or ablating into the inclusion and removing the fluid for direct chemical analysis.
Colorado River's connection with the ocean was a punctuated affair
16.11.2017 | University of Oregon
Researchers create largest, longest multiphysics earthquake simulation to date
14.11.2017 | Gauss Centre for Supercomputing
The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.
During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....
The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.
Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...
Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...
15.11.2017 | Event News
15.11.2017 | Event News
30.10.2017 | Event News
17.11.2017 | Physics and Astronomy
17.11.2017 | Health and Medicine
17.11.2017 | Studies and Analyses