News tagged with sound

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How the kettle got its whistle

(Phys.org) —Researchers have finally worked out where the noise that makes kettles whistle actually comes from – a problem which has puzzled scientists for more than 100 years.

Oct 25, 2013
4.7 / 5 (38) 11 | with audio podcast

Uncovering liquid foam's bubbly acoustics

Liquid foams fascinate toddlers singing in a bubble bath. Physicists, too, have an interest in their acoustical properties. Borrowing from both porous material and foam science, Juliette Pierre from the Paris Diderot University, ...

Oct 17, 2013
5 / 5 (1) 0

The science of stadium sound

Football fans attending BYU home games the last two seasons may have noticed a few students roving through the crowd, giving their full attention to hand-held scientific instruments instead of the game.

Sep 04, 2013
not rated yet 2

Frogs without ears hear with their mouth

Gardiner's frogs from the Seychelles islands, one of the smallest frogs in the world, do not possess a middle ear with an eardrum yet can croak themselves, and hear other frogs. An international team of scientists ...

Sep 02, 2013
4.8 / 5 (4) 2 | with audio podcast

A layer of tiny grains can slow sound waves

In some ways, granular material—such as a pile of sand—can behave much like a crystal, with its close-packed grains mimicking the precise, orderly arrangement of crystalline atoms. Now researchers at ...

Aug 05, 2013
5 / 5 (2) 2 | with audio podcast