Please teach me a little about nodal and anti nodal lines

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SUMMARY

The discussion centers on the concepts of nodal and anti-nodal lines in wave physics, specifically in relation to the equation |a-b| = λ(n - ½). Participants clarify that the middle nodal line cannot equal 0, as this value is reserved for anti-nodal lines. The correct interpretation suggests that the middle nodal line corresponds to a value of 1, leading to Pn = 3, while the alternative interpretation of Pn = 2 is deemed incorrect. The reference provided links to a resource on double slit interference, reinforcing the concepts discussed.

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  • Knowledge of wavelength (λ) and its significance in wave physics
  • Basic grasp of nodal and anti-nodal line definitions
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julianwitkowski
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Random question about waves like this as they pertain to |a-b| = λ(n - ½).

Untitled-4.jpg


Is the middle nodal line = 1, since it is 2 over, would Pn = 3 in this image.

If that is not right, the middle nodal line must = 0, and therefore Pn = 2.

I don't think this is true because I remember reading the middle nodal line is never 0, only an anti-nodal line, but I might be wrong.
 
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