Register to reply

What is acoustic lenth

by polaris90
Tags: acoustic length
Share this thread:
Feb18-13, 10:27 PM
P: 45
What is acoustic length in a pipe/tube? On a physics lab, the lab write up mentions it but it doesn't explain what it is. I know it's give by L = λ/4 and higher ones will be odd multiples of the first one. But what does this actually mean and what is it for? I looked it up but couldn't find any information.
Some help would be appreciated.
Phys.Org News Partner Physics news on
Physicists unlock nature of high-temperature superconductivity
Serial time-encoded amplified microscopy for ultrafast imaging based on multi-wavelength laser
Measuring the smallest magnets: Physicists measured magnetic interactions between single electrons
Feb19-13, 04:07 AM
Sci Advisor
HW Helper
tiny-tim's Avatar
P: 26,157
hi! polaris90!

acoustic length of a tube is an imaginary measurement that's longer than the actual length

you put it into equations (instead of the actual length), and the equations work!
see eg for details, and lots of pretty pictures
Feb20-13, 06:56 PM
P: 45
ok, thank you. That was very helpful

Register to reply

Related Discussions
The first acoustic peak in CMB Cosmology 5
Acoustic Problem Introductory Physics Homework 13
Snorkel Lenth Classical Physics 4
Light rod (acoustic rod?) what is that? Special & General Relativity 4
Lenth of line around an object? General Math 8