# Michelson interferometer maxima

## Homework Statement

A Michelson interferometer uses light from a sodium lamp. Sodium atoms emit light having wavelengths 589.0 nm and 589.6 nm. The interferometer is intially set up with both arms of equal length (L1=L2) producing a bright spot at the center of the interference pattern. How far must mirror M2 be moved so that one wavelength has produced one more new maxima than the other wavelength?

## Homework Equations

wavelength = 2 (delta L) / (delta m)

## The Attempt at a Solution

I know that we are looking for delta L but I don't know which wavelength and m value to use.

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## Homework Statement

A Michelson interferometer uses light from a sodium lamp. Sodium atoms emit light having wavelengths 589.0 nm and 589.6 nm. The interferometer is intially set up with both arms of equal length (L1=L2) producing a bright spot at the center of the interference pattern. How far must mirror M2 be moved so that one wavelength has produced one more new maxima than the other wavelength?

## Homework Equations

wavelength = 2 (delta L) / (delta m)

## The Attempt at a Solution

I know that we are looking for delta L but I don't know which wavelength and m value to use.
I got it how to do it :

let one of the m value be m and the other m+1...both have same L...so sub L value from one equation to the other and then solve for m..once u have m, sub in one of the equation and find L... :zzz:

## Homework Statement

A Michelson interferometer uses light from a sodium lamp. Sodium atoms emit light having wavelengths 589.0 nm and 589.6 nm. The interferometer is intially set up with both arms of equal length (L1=L2) producing a bright spot at the center of the interference pattern. How far must mirror M2 be moved so that one wavelength has produced one more new maxima than the other wavelength?

## Homework Equations

wavelength = 2 (delta L) / (delta m)

## The Attempt at a Solution

I know that we are looking for delta L but I don't know which wavelength and m value to use.