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. Imagine you're at the train station, waiting to catch the northbound train. It's a quiet ...

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 ...

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 ...

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Forbes contributors publish independent expert analyses and insights. I cover the history of science and exploration. Today's Google Doodle celebrates the 214th birthday of Christian Doppler, whose ...

Sitting on the beach at Gecko Island one afternoon, A man finds himself beneath the flight path of the airplanes leaving East Blue Airport. a) What frequency will the man hear as a jet, whose engines ...

Twist and shift: Incident beams with opposite orbital angular momentum (green spiral) reflect from a spinning surface: some of the light in the reflected beam has been red-shifted after reflection and ...

Controversial research suggests the Big Bang may be a myth due to its reliance on the Doppler effect theory. This idea says the universe is neither expanding, nor contracting; instead it is steady, ...

The International Isle of Man TT is a crazy motorcycle race. I mean—it's seriously ludicrous. They ride on public roads (yes, they are closed to normal traffic) such that you get these videos of bikes ...