In message <[email protected]>, Paul
Scott <[email protected]> writes
I don't see how the physics would work to give you a quarter-
wavelength as you claim.
I just did some quick online research and he is right. A tube closed
on one end like a clarinet or trumpet has a wavelength that is four
times the length of the tube. A flute is open on both ends so it has
a wavelength of double the length of the tube.
I think I have it! All blown musical instruments are, as far as physics
is concerned, "open" at both ends. Don't think of it as "the mouthpiece
closes the tube", think of it in physics terms as nodes and antinodes.
The bell end, being open, has to be an antinode. The mouthpiece end,
being the source of the vibrations, ALSO has to be an antinode (a node,
by definition, does not vibrate). Therefore, by definition, all blown
musical instruments will have a fundamental frequency of 2L.
Cheers,
Wol
--
Anthony W. Youngman - [email protected]
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