What is the meaning of r in the equation 2t=mλ for dark fingers?

Thread starter kenok1216
Start date Apr 24, 2016
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Lens

AI Thread Summary

In the equation 2t=mλ, the variable r refers to a specific radius relevant to the context of dark fringes in interference patterns. The discussion clarifies that r is not the curvature of a plano-convex lens nor is it related to the radius r5001 dark, as using these interpretations would yield incorrect results. The focus is on determining the correct meaning of r in relation to the dark fringes observed. The equation is used to analyze the conditions for destructive interference in thin films. Understanding the role of r is crucial for accurate calculations in this context.

Apr 24, 2016

kenok1216

Homework Statement

λ[/B]

Homework Equations

2t=mλ for dark fingers

The Attempt at a Solution

how can i calculate r_{5001 dark},also ,what is the meaning of r in qusetion(r=5mm),<----- it is not the curvature R of plano-convex lens also it is not r_{5001 dark},since it will get incorrect answer so what is radius r mean?

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Apr 24, 2016

kenok1216

solved

Last edited: Apr 24, 2016

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