Physics Help Forum fringes of equal inclination/thickness?

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 May 2nd 2009, 11:30 PM #1 Junior Member   Join Date: Feb 2009 Posts: 6 fringes of equal inclination/thickness? Can anyone explain to me their differences and relation? thanks!
 May 6th 2009, 09:16 PM #2 Senior Member   Join Date: Apr 2008 Location: HK Posts: 886 It can be talking something about soap bubble producing non-uniform interence pattern. It is because the thickness of upper region of soap bubble is very thin with path differnece amlost zero due to pull by gravity. The non-uniform thickness results in non-uniform fringes. In essence, the relationship can be described by the following equation. $\displaystyle 2nt = m\lambda$ or $\displaystyle 2nt=(k-0.5)\lambda$ where $\displaystyle t$ is the thickness of film of material between $\displaystyle \lambda$ being the wavelength n ,m and k being constants

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# what is frenges of equal thickness

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