Ok-2 Echo Box With Choke Coupling
Published: Wednesday 15 March 2006 - Updated: Monday 28 March 2011
Aim
To illustrate the importance of symmetry in physics.
Apparatus
Cylinder and board as shown.
Diagrams
Click on pictures to enlarge.
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Echo Box Diagram |
Description
A glass tube containing water is mounted above a screen with the cryptic message "ECHO BOX WITH CHOKE COUPLING". All letters with horizontal symmetry have been coloured blue.