News tagged with doppler effect
Researchers use Doppler Effect for computer gesture control
(Phys.org) -- Researchers from Microsoft and the University of Washington have together created a system whereby a computer user can use hand gestures to instigate a limited set of computer commands such as ...
Technology / Computer Sciences
May 07, 2012 |
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169 years after its discovery, Doppler effect found even at molecular level
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, ...
May 10, 2011 |
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Scientists reverse Doppler Effect
(PhysOrg.com) -- Researchers from Swinburne University and the University of Shanghai for Science and Technology have for the first time ever demonstrated a reversal of the optical ‘Doppler Effect’ ...
Mar 07, 2011 |
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New look at relativity: Electrons can't exceed the speed of light -- thanks to light itself, says biologist
When resolving why electrons can never beat the speed limit set by light, it might be best to forget about time. Thanks to insight from studying movement inside a biological cell, it seems that light itself -- not the relativity ...
Nov 19, 2010 |
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Explained: the Doppler effect (w/ Video)
Many students learn about the Doppler effect in physics class, typically as part of a discussion of why the pitch of a siren is higher as an ambulance approaches and then lower as the ambulance passes by. ...
Aug 03, 2010 |
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NASA develops enhanced search and rescue technologies
NASA, which pioneered the technology used for the satellite-aided search and rescue capability that has saved more than 27,000 lives worldwide since its inception nearly three decades ago, has developed new technology that ...
Space & Earth / Space Exploration
May 24, 2010 |
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Most extreme white dwarf binary system found with orbit of just 5 minutes
(PhysOrg.com) -- An international team of astronomers, including Professor Tom Marsh and Dr Danny Steeghs from the University of Warwick, have shown that the two stars in the binary HM Cancri definitely revolve ...
Mar 08, 2010 |
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Mars Express heading for closest flyby of Phobos (w/ Video)
ESA's Mars Express will skim the surface of Mars' largest moon Phobos on Wednesday evening. Passing by at an altitude of 67 km, precise radio tracking will allow researchers to peer inside the mysterious moon.
Space & Earth / Space Exploration
Mar 01, 2010 |
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Using lasers to cool and manipulate molecules
(PhysOrg.com) -- "For years, we have been using laser cooling to trap and manipulate atoms," David DeMille tells PhysOrg.com. "This has been very useful for both basic science and many applications. Recent ...
Dec 07, 2009 |
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Optical atomic clock becomes portable
You imagine a clock to be different -- yet the optical table with its many complicated set-ups really is one. Optical clocks like the strontium clock in the Physikalisch-Technische Bundesanstalt (PTB) in Braunschweig ...
Sep 03, 2009 |
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Peculiar, junior-sized supernova discovered by New York teen
In November 2008, Caroline Moore, a 14-year-old student from upstate New York, discovered a supernova in a nearby galaxy, making her the youngest person ever to do so. Additional observations determined that the object, called ...
Jun 11, 2009 |
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