# A Demonstration In Physics: Sounding Pipes

Submitted by: Essen 2 weeks ago in
4

It's about time to science it up a notch.
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There are 6 comments:
Male 4,445
Fun facts: the Bb trumpet is 4.5 feet long, and its resonant pitch is Bb (see how that works) below middle C. Bb Trombones are 9 feet long, and its resonant pitch is Bb (again, see how that works) an octave below the trumpet. BBb tubas are approximately 18 feet long, and its resonant pitch is Bb below the trombone.

For valved instruments, every time a valve is pressed, the length of the tube is increased, changing the resonant pitch. 2nd valve lowers the pitch by a minor second, 1st lowers by a major second, 3rd OR 1st and 2nd lowers the pitch by a minor third, 2nd and 3rd lowers it by a major third, 4th (if applicable) OR 1st and 3rd lowers it by a perfect fourth, 1st 2nd and 3rd OR 2nd and 4th lowers it by a tritone, repeat the pattern with the 4th valve to continue the pattern.
Male 536
He got sound from the large one, but he couldn't hear it himself.... :D
Male 9,305
~looks down~ I got your long, excited pipe right here!
Male 1,129
That was a nice watch, love his enthusiasm.
Male 4,062
How interesting be a fly on the wall of his lab and just observe him puttering about.