November 28, 2013
Mohenjo
Science
amazon, AOL video, Astronomers, astrophysicist Karl Battams, business, Business News, Comet Ison, fiery death, Hotels, human-rights, icy comet, ISON, ISON (EYE'-sahn), Karl Battams, medicine, mental-health, NASA, NASA telescopes and spacecraft, Naval Research Laboratory, research, Science, Science News, Solar System, Sun, survive, technology, Technology News, Thanksgiving, travel, vacation, Video, Will it meet a fiery death
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Comet ISON is teasing the solar system as it dances with the sun and it’s giving astronomers mixed signals.Will it meet a fiery death – or survive – when it whips around the sun on Thursday?
The icy comet will be only about 1 million miles away from the sun’s super-hot surface during its close encounter on Thanksgiving. On Monday, it looked like it was about to die even before it got there. On Tuesday, it appeared healthy again.
“We have never seen a comet like this,” Naval Research Laboratory astrophysicist Karl Battams said during a NASA news conference Tuesday. “It has been behaving strangely.”
Because it is so close to the sun, ISON (EYE’-sahn) will likely not be visible from Earth on Thursday – except via a fleet of NASA telescopes and spacecraft aimed at the comet as it gets closest to the sun at 1:37 p.m. EST, he said. And it will be a few hours before scientists know whether the comet survives.
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August 30, 2013
Mohenjo
Technical
amazon, Breaking Defense, business, Business News, chemical contamination, Christopher Field, firefighting robot, Hotels, Nanotechnology, nanowire, Naval Research Laboratory, navy lab, precious air, radiation leaks, research, rotten food, Science, Science News, sensors, SiN-VAPOR, technology, Technology News, tiny sensors, travel, vacation
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Imagine: tiny sensors built into military combat gear to detect chemical or biological weapons; unseen sensors peppered throughout a submarine to detect radiation leaks or chemical contamination of the crew’s precious air; a cellphone — think Star Trek tricorder, flip it open, open the app and bingo! — able to detect the gas of explosives down to parts per trillion that helps to speed passengers through crowded airports. Or you could embed sensors in your refrigerator and it could tell you exactly what was spoiling and whether it was still safe to eat.All those technologies may be possible thanks to a breakthrough at the Navy’s premier research lab who may be on the verge of unleashing the long-sought promise of nanotechnology. Researchers at the Naval Research Laboratory (NRL) – Christopher Field, Junghoon Yeom, Daniel Ratchford, Hyun Jin In and Pehr E Pehrsson – have figured out how to manufacture nanowires reliably using existing technology.
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