There's a lot more to laughter than you might imagine, in this Moment of Science.
Stand in front of a picket fence, clap your hands, and listen to the musical quality of the reverberation.
No, they aren't trying to get on American Idol. Research shows that blue whales use Doppler shift to sing.
Can you tell if someone is smiling even if you aren't looking at them, but just hearing their voice?
Did you know whispering behind someone's back rather then in front of them is better for secret telling?
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.
A whopping three million people in the United States alone are affected by this problem. What is it?
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.
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.
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?