Nor are atmospheres
something subjective, for example determinations of a psychic state.
it contributes to a reducing atmosphere
in the mold during the metalcasting process, thus creating an oxygen scavenger.
While observing a rare celestial alignment, astronomers made the first X-ray measurement of the atmosphere
of Titan, Saturn's most tantalizing moon.
The group helps clients resolve key problems in areas ranging from lasers to planetary atmospheres
It's still unclear when scientists will have the tools to characterize extrasolar planets' atmospheres
with enough precision to recognize signs of life.
When the composition of the mold atmosphere
was measured at the interface in molds with seacoal additions and in those without seacoal or other carbonaceous additions, it was discovered that there was little difference between the two--the atmospheres
in both molds were reducing.
The enlarged space, triple the original size, allows TransFRESH researchers to explore expanded applications for its Tectrol(R) atmospheres
In experiments that lasted 24 hours, plants in atmospheres
that contained carbon dioxide concentrations of 2,000 ppm grew five times as fast as those exposed to modem concentrations of the gas.
: The more reducing mold atmospheres
(those rich in |H.
The company's Tectrol atmospheres
slow produce degradation by the manipulation of atmospheric composition within the container.
Also, he notes, similar simulations should shed light on the cratering rates on other celestial objects with atmospheres
, such as Venus, Mars, and Saturn's moon Titan.
In planetary atmospheres
, in contrast, the smaller, denser volume of material makes the scattering of incoming solar X rays dominate over interactions with the solar wind, says Dennerl.
Astronomers have long wondered what the atmospheres
of planets beyond the solar system might be like.
27 JOURNAL OF GEOPHYSICAL RESEARCH (ATMOSPHERES
) that a small but significant change in the way the atmosphere
circulates in the tropics may explain the increased dustiness during glacial times.
That impact and its reverberations, which compressed the volatile element to nearly 2 million atmospheres
of pressure and cooked it to 4,400 kelvins, lasted long enough for researchers to watch hydrogen's electrical resistivity drop to a value typical of metals such as cesium and rubidium at that temperature.