MostTriv #99 Sound Waves

Hey, Listen to THIS!

I was just having fun yelling at you :-)

Pete Townshend on iPods

“Who guitarist Pete Townshend is warning iPod users they may face hearing loss if they pump up the volume on the devices.

“Townshend, 60, said his hearing was irreversibly damaged from using studio headphones, and he now takes 36-hour breaks between recording sessions. The band was known for loud performances. “ "Hearing loss is a terrible thing because it cannot be repaired," Townshend said on his website. "If you use an iPod or anything like it, or your child uses one, you may be OK. But my intuition tells me there is terrible trouble ahead."

Explaination on one of the questions in this show:

Water vapor in the air increases this speed slightly. Sound travels faster through warm air than through cold air. This is to be expected because the faster-moving molecules in warm air bump into each other more often and therefore transmit a pulse in less time. For each degree rise in temperature above 0 degrees C, the speed of sound in air increases by 0.6 meters per second. In water, sound travels about four times as fast as it does in air, while in steel, the speed of sound is about fifteen times as great as in air.

What do you know, Joe?

Why do people often experience ringing in the ears after a loud music concert?

A. Some cilia in the ear have been destroyed and are "dying".


B. The hammer, anvil and stirrup are still sending electrical waves to the brain. 


C. The brain is still processing subtle vibrations of the cilia.

D. The pinna is still funneling trapped sound waves.

Last Post Answers: D: Irish Wolfhound

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