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Latest Doppler effect Stories

New Doppler Radar Will Measure Rain And Wind On This Summer's HS3 Mission
2013-08-01 09:29:29

NASA Most aircraft carrying Doppler radar look like they've grown a tail, developed a dorsal fin, or sprouted a giant pancake on their backs. But when the unmanned Global Hawk carries a radar system this summer, its cargo will be hard to see. The autonomous and compact High-altitude Imaging Wind and Rain Profiler, or HIWRAP, a dual-frequency conical-scanning Doppler radar, will hang under the aircraft's belly as it flies above hurricanes to measure wind and rain and to test a new method...

How We Perceive Movement Through Space And Time Is Directly Connected
2013-03-13 21:50:31

redOrbit Staff & Wire Reports - Your Universe Online From time immemorial, humans have grappled to understand the slippery notion of time, often drawing on familiar metaphors of physical motion such as “time flies” or “time marches on.” When Einstein published his paper on special relativity in 1905, he forever fused the notions of space and time into a single, mind-boggling, yet mathematically elegant, concept known as spacetime. Now, new research on the human...

Image 1 - WHOI Studies Hydrocarbon Flow Rate Of Deepwater Horizon Spill
2011-09-06 05:23:09

  Researchers at the Woods Hole Oceanographic Institution (WHOI) have calculated the flow rate of the BP Macondo well to be about 57,000 barrels of oil per day, totaling close to 5 million barrels of oil and nearly 100 million standard cubic feet per day of natural gas released from April 2010 to July 2010. The study results were published in the online issue of the Proceedings Of The National Academy Of Sciences (PNAS). The estimates matched those made by the federal government...

2011-05-11 00:31:59

Whether they know it or not, anyone who's ever gotten a speeding ticket after zooming by a radar gun has experienced the Doppler effect "“ a measurable shift in the frequency of radiation based on the motion of an object, which in this case is your car doing 45 miles an hour in a 30-mph zone. But for the first time, scientists have experimentally shown a different version of the Doppler effect at a much, much smaller level "“ the rotation of an individual molecule. Prior to this...

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2005-05-25 08:09:27

MADISON -- What if the speed of light is a constant only most of the time? What if gravity sometimes pushed instead of pulled? Scientists are increasingly asking what would seem like far-out questions regarding the laws and rules of physics after discovering conditions and materials where the rules don't quite apply. Take the Doppler effect. The Doppler effect is in use everywhere, everyday. Police use it to catch speeders. Satellites use it to track space debris and air-traffic controllers...


Latest Doppler effect Reference Libraries

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2004-10-19 04:45:41

Doppler Effect -- The Doppler effect is the apparent change in frequency or wavelength of a wave that is perceived by an observer moving relative to the source of the waves. For waves, such as sound waves, that propagate in a wave medium, the velocity of the observer and the source are reckoned relative to the medium in which the waves are transmitted. The total Doppler effect may therefore result from both motion of the source and motion of the observer. Each of these effects is analyzed...

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Word of the Day
attercop
  • A spider.
  • Figuratively, a peevish, testy, ill-natured person.
'Attercop' comes from the Old English 'atorcoppe,' where 'atter' means 'poison, venom' and‎ 'cop' means 'spider.' 'Coppa' is a derivative of 'cop,' top, summit, round head, or 'copp,' cup, vessel, which refers to 'the supposed venomous properties of spiders,' says the OED. 'Copp' is still found in the word 'cobweb.'
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