Determining the distance of a pipe by the length of an echo
View Single Post
Feb24-10, 05:53 PM
How could I determine the length of a pipe by playing a certain frequency into it, then measuring how long the echo is audible?
The hemihelix: Scientists discover a new shape using rubber bands (w/ video)
Mapping the road to quantum gravity
Chameleon crystals could enable active camouflage (w/ video)