Acoustics is the science of sound as it reacts to air, water and solid materials. Learn about topics from radar to white noise, plus find out why you can hear the ocean in a seashell.
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If you have trouble sleeping you might have been told to get a white noise machine. But white isn't the only color of noise out there.
By Talon Homer
Listen in as the guys from Stuff They Don't Want You to Know investigate the sonic weapons "attack" in Cuba.
By Diana Brown
Overtone is a sound accompanying the main tone produced by a vibrating body. The number and loudness of overtones determine the timbre, or tone color, of a musical sound.
An object free to vibrate tends to do so at a specific rate called the object's natural, or resonant, frequency.
Sound. When a drum is struck, the drumhead vibrates and the vibrations are transmitted through the air in the form of waves.
A tuning fork is a small U-shaped piece of steel that, when struck, produces a clear tone of unvarying pitch.
Acoustics, the branch of physics that deals with the production, transmission, properties, and effects of sound waves.
Do you remember holding a large conch shell up to your ear to hear the ocean? Why does this work even when you're far away from the sea?
I was watching an old movie today, and two kids (neighbors) were talking to each other using two tin cans and a string. Does that really work? If so, why does it work?
The decibel scale measures sound based on human hearing, which makes it one of the most unusual scientific measurements. How are decibel calculated and what do they tell us about sound?
When an airplane flies faster than the speed of sound, you hear a large booming sound. But how can something that seems so simple cause such a boom?