News tagged with light waves

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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
3.4 / 5 (24) 21 | with audio podcast

The sound of an atom has been captured

Researchers at Chalmers University of Technology are first to show the use of sound to communicate with an artificial atom. They can thereby demonstrate phenomena from quantum physics with sound taking on ...

Sep 11, 2014
4.2 / 5 (19) 3

Making a better invisibility cloak

The first functional "cloaking" device reported by Duke University electrical engineers in 2006 worked like a charm, but it wasn't perfect. Now a member of that laboratory has developed a new design that ...

Nov 11, 2012
4.5 / 5 (17) 3 | with audio podcast