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We were discussing a problem on the Resonance Tube Experiment in class when my teacher wrote down the following equations:

My teacher's figure

AN and N stand for the positions of the antinode and node, e stands for the end correction and l1, l2 and l3 are lengths of the tube in the three cases. What I am wondering is, why can't the end correction be applied inside the tube? Mathematically. why can't e be negative? Does this have anything to do with the reason for end correction?

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The, e, assumes that the anti-node lies beyond the end of the open tube. Combining two of the resonance equations permits finding, λ, and, e; but you may find that e changes as, λ, gets smaller.

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  • $\begingroup$ Is it physically possible for the organ pipe to exceed the length of the antinode? Why or why not? $\endgroup$ – Ambica Govind Mar 31 at 5:57

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