b3ta.com board
You are not logged in. Login or Signup
Home » Messageboard » Message 2230906 (Thread)

# That's pretty interesting
On the subject of sound waves I read that a wave can get 'stuck' in a room for years and just sort of reverberate around. There is a certain spot in my kitchen where if I stand and hum a certain note I can make the windows and cupboards vibrate, which I guess could be confused for something supernatural if you were that way inclined. I agree with the face recognition thing too
(, Wed 29 Oct 2003, 15:44, archived)
# experiment for you
if you put something twangy (short ruler, toothbrush etc) between my teeth and twang it you can make your skull and eyes vibrate so that tvs and monitors go all wierd.

not supernatural, but mildly amusing.
(, Wed 29 Oct 2003, 16:45, archived)
# so, if i...
put a ruler between YOUR teeth and twang it, MY skull will vibrate?! that sounds pretty supernatural to me
(, Thu 30 Oct 2003, 11:54, archived)
# It does have a simple cause...
Evey container, a room or concert hall for example, has what's called a simple harmonic. The note that will have a wavelength exactly twice the length of the room. When that note is truck one half a wave fills the room and the room vibrates to the 'simple harmonic'. Best place to try it, snd it's why singing there is soo much fun, is the bathroom.
(, Thu 30 Oct 2003, 10:50, archived)
# Odd thing with the sound....
...I noticed this silly little thing by accident

If the smoke alarm goes of in the hall way and the parrot (who also lives in the hall) starts squawking... the sound resonates in your ears and sounds like a matrixesque digital shrieking noise
(, Thu 30 Oct 2003, 21:12, archived)
# Get a slinky
Place coiled up version over ear.
Turn head 90 degrees so the slinky is now facing the ground.
Drop slinky end while holding one part to ear.
Promptly hear "laser" sound.
Realise it is completely off-topic.
Find post is deleted.
(, Fri 31 Oct 2003, 21:50, archived)