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Posts tagged sound waves

August 7, 2009

 

Two caves on Mediterranean coast

Losing Your Voice To An Echo

Shout "HELLO" between two cliffs and you'll hear echoes as sound waves bounce back and forth. But how do echoes really work? Find out on this Moment of Science.

August 2, 2007

 

Close up of ear

Your Ear’s Internal Amplifier

You probably imagine that your ears are rather passive, but they can play a surprisingly active role too. Learn more on this Moment of Science.

April 16, 2007

 

secret

Don’t Talk Behind My Back

Did you know whispering behind someone's back rather then in front of them is better for secret telling?

January 5, 2006

 

soundproof

Shh!

There are several ways to keep sound out if you're soundproofing your home recording studio.

September 30, 2004

 

Infrasound: Sounds You Can’t Hear

There's a whole world of sound, called infrasound, that your ears can't pick up. Learn more, on this Moment of Science.

September 27, 2003

 

Becoming Part of the Music

Unlike waves on a lake, sound waves don’t travel up and down. Instead they’re more like layers of high and low pressure traveling outward in all directions. Each wave consists of a layer of high pressure followed by a layer of low pressure.

September 27, 2003

 

Jugband Physics

When the bottle vibrates, the water inside has to vibrate with it. Having to move all that water slows down the vibrations of the glass and that in turn slows down the frequency of the sound waves, producing a lower pitch. Adding more water slows down the bottle’s vibrations even more, creating an even lower pitch.

September 27, 2003

 

Tricking Your Ears

By temporarily altering the shape of the pinnas with plastic molds, researchers in the Netherlands found that indeed, people with new pinnas had a hard time locating sound sources.

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