A Moment of Science

Posts tagged pitch

July 10, 2013

 

toddler laughing while a woman holds him

The Acoustics Of Laughter

There's a lot more to laughter than you might imagine, in this Moment of Science.

August 25, 2011

 

white picket fence

The Physics Of A Picket Fence Clap

Stand in front of a picket fence, clap your hands, and listen to the musical quality of the reverberation.

December 14, 2010

 

illustration of a blue whale and a person

Blue Whales Sing In Perfect Pitch

No, they aren't trying to get on American Idol. Research shows that blue whales use Doppler shift to sing.

November 21, 2008

 

Smiling Woman

Smiley Voices

Can you tell if someone is smiling even if you aren't looking at them, but just hearing their voice?

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?

December 1, 2005

 

Good Vibrations (The Theremin)

You know the Beach Boys song “Good Vibrations”? You know that weird, eerie sound that floats through the song? That’s a theremin, or at least a synthesized version of one. Learn more on this Moment of Science.

October 30, 2003

 

Stuttering Ear

A whopping three million people in the United States alone are affected by this problem. What is it?

September 27, 2003

 

The Sexiest Frog in Borneo

To us, it’s a relaxing sound. To female frogs, it’s downright sexy. The louder the chirp, the more interesting the male. So what’s a Romeo frog to do if his voice isn’t quite up to volume?

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

 

When a Boy’s Voice Changes

As a boy goes through adolescence, his secondary sex characteristics develop. One of these characteristics is the rapid growth of the larynx and vocal cords. A boy’s voice deepens as his larynx develops because the bigger the vocal cords, the deeper the voice.

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