Radar is quite spectacular in telling us exactly where rain is falling by pinging precipitation with radio waves! Our weather radar can determine more than just a storm’s location, but its movement as ...
The inverse Doppler effect has been observed in an experiment for the first time. Nigel Seddon and Trevor Bearpark at BAE Systems in Bristol in the UK saw the effect in an electrical transmission line ...
Since 1988, this meteorological breakthrough has nearly doubled tornado warning times, giving communities crucial minutes to ...
Ever notice how the pitch of an ambulance's siren changes as it speeds by? If so, then you're already familiar with a phenomenon that astronomers use to measure the relative speeds of astronomical ...
The Doppler Effect is physics that is so ingrained in our brain that even the movies get it right. Any time some character is walking down a street and a car or train rushes past, the sound of the ...
A twist on the physics that cops use to clock speeding drivers can determine how fast an object is spinning. The approach could be used to protect wind turbines from damaging winds, learn about ...
Expertise from Forbes Councils members, operated under license. Opinions expressed are those of the author. There are many laws that govern the natural world: the laws of polarity, gravity, relativity ...
The Doppler shift of sound or light waves from a moving source is familiar to physicists and non-physicists alike. Now, researchers in China and Australia have seen the more exotic inverse Doppler ...
Two Microsoft Research projects presented at the Conference on Human Factors in Computing Systems used unique methods, completely absent of any cameras, to sense gestures. Called Soundwave, one ...
Microsoft’s Kinect peripheral senses motion inputs using a combination of a depth sensor, RGB camera and a multi-array microphone. Now Microsoft’s research division, Microsoft Research, has developed ...
Physicists at the University of California, San Diego have developed a material that, at microwave frequencies, reverses Doppler shift, Snell's law and the direction in which Cerenkov radiation is ...