Quincke's Tube

3B55.40 |
Catalog: 
3B55.40
Room: 
PS F175
Quantity: 
1
Setup Time: 
5 minutes
  • A small speaker at the bottom sends sound in two directions before recombining a
    A small speaker at the bottom sends sound in two directions before recombining as it comes out of the horn.
  • The path of the sound can be lengthened on one side by pulling the slide like a
    The path of the sound can be lengthened on one side by pulling the slide like a trombone.
  • This tube can be removed to change the speaker if needed.
    This tube can be removed to change the speaker if needed.
Date Added: 
Thursday, January 26, 2006 - 12:00am
Description: 

The sound from a small speaker branches in two directions then out the horn. The length of one of the paths can be changed by pulling the slide like a trombone. The sound will constructively and destructively add as the slide is pulled.

Purpose: 
To show that the sound constructively or destructively add as the paths vary by half a wavelength.
Reference: 
Phys. Rev. 27, 494?498 (1926) [Issue 4 ? April 1926 ]