Finding distance between two slits in conditions related to Young's Experiment

AI Thread Summary
To find the distance between two slits in Young's Experiment using light of a known wavelength, one can analyze the interference pattern produced on a screen. The spacing of the bright fringes can be used to derive the slit separation. The formula distance = wavelength/sin(theta) is relevant, but the angle theta can be determined from the fringe pattern. Observing the far-field diffraction pattern helps in calculating this angle based on the positions of the maxima. Understanding the relationship between wavelength, slit distance, and fringe spacing is crucial for solving the problem.
wScott
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Good evening to all you genius people out there, I've been racking my brains for the past 10 minutes and can't come up with anything.

The exact wording of the question:

Describe how you could use light of a known wavelength to find the distance between two slits.

I thought of using distance = wavelength/ sin(theta). But then I realized I'm not given the angle. Got any suggestions for this predicament?
 
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Hint -- Do you know what the "far field" pattern looks like when you send monochromatic (and coherent) light through two neighboring slits? the angle will come from something about that.
 

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