Sound is a form of energy. It is that form of energy which makes us hear. Sound wave is a vibratory disturbance in a medium which carries energy from one point to another without there being a direct ...

Though many people may hear “Doppler Radar” as tool for tracking weather systems, it is used for much more and has roots in science dating back generations. The Doppler Effect, as it is known, is also ...

Can't see the video? Download an mp4 [10.4 MB] version of this video. Smart phones are expensive so please take care not to swing yours too close to a wall or a person or inside a sock that's almost ...

"Sound of siren sounds high when it approaches, it sounds low when going away" is often expressed by the word "Doppler effectIn fact, it is also used for exploring the universe. Astronomer Rad Milla ...

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 Doppler effect is an observed change in pitch (how high or low a sound is) when either the source of the sound or the listener is in motion. Imagine a car, its horn blaring, approaching you as you ...

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 ...

A video of scientists dropping ice into a really deep hole has gone viral because of the wobbly cartoon-spaceship sound the falling ice makes. Princeton University geochemist John Andrew Higgins ...

Physicists have generated a lot of excitement in recent years by dreaming up specially structured materials with novel applications like invisibility cloaks. What’s more, some of these “metamaterials” ...