Register to reply

Sound waves

by Null_
Tags: sound, waves
Share this thread:
Jun1-10, 08:23 AM
P: 232
After much thought on the matter, I am very confused about sound. I know that it is just a wave...what is the wave made of? Vibrations of what? And if the wave is made of nothing, then how does it travel through a vacuum?

And, if there are no "sound particles" as I have been told, then why does sound travel slower than light? Light has an associated mass, so I don't see why this doesn't slow it down to slower than the speed of sound.

I don't have much physics knowledge as you can probably tell, so please keep the responses so. :)
Phys.Org News Partner Physics news on
New complex oxides could advance memory devices
Nature's designs inspire research into new light-based technologies
UCI team is first to capture motion of single molecule in real time
Jun1-10, 01:35 PM
P: 5,632
check can answer your questions..

Sound is vibrational energy of a material...hence sound, unlike electromagnetic radiation (light) cannot ravel in a there is no material to vibrate...

For example in traditional telephone receivers carbon granules move in response to varying electrical signal strength...this moves a diaphram..which vibrates air molecules..and, voila, you can HEAR another person....vocal cords also vibrate air molecules so you can get hollered at by girlfriends and your parents....

Register to reply

Related Discussions
Can light enegry or waves affects sound waves? General Physics 7
Wavelength of sound waves and speed of sound in air column Introductory Physics Homework 1
Sound waves propagated as transverse waves General Physics 14
Comparing sound waves to waves in a Coaxial Cable aka T.E.M. Advanced Physics Homework 5
Why will ultrasonic waves not interfere with other sound waves in water? Introductory Physics Homework 1