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 ...

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 for the first time at optical wavelengths The Doppler effect is common in everyday life—the sound of a motor car has a higher frequency as it approaches ...

Everyone has experienced the Doppler effect: an ambulance's siren has a higher pitch as it approaches you, and a lower pitch when moving away. Now imagine that the pitch goes down as the ambulance ...

The headline is somewhat of a trick question: of course the effect did exist before the railroads. However, it wasn’t yet defined by the physics of the day, nor was it even noticed before the ...

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 ...

This periodic fluctuation was caused by the " Doppler Effect," in which wavelengths of light are stretched or smooshed as an object passes by them. This 372-day pattern was evidence that the "object" ...