(adsbygoogle = window.adsbygoogle || []).push({}); 1. Show that for t<<R, the radius r of a fringe is related to r= (2TR)^1/2

I'm not sure what the relevant equations are, that would be the problem. A gentle shove in the right direction would be appreciated, I've been looking for exactly how to prove it and I can't. ^_^ Thanks for any help!

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# Homework Help: Newton's Rings

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