I'm thinking about using two slits, a webcam and a laser to calculate distances for a project.(adsbygoogle = window.adsbygoogle || []).push({});

Usually you measure the distances between maxima but this can be easily measured in a dark room using Matlab and it's image processing routines.

I can create the slits and accurately measure them using an optical microscope.

Is this a good or bad idea? Using error analysis, I think I can get the distance down to 1 part in 1000 so 1mm over 1 m away or .5mm over 2m away.

Maybe I can combine it with a cheap interferometer and make it super accurate. Problem with an interferometer is that you can only measure within 1 wavelength.

Any comments?

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# Comments on Double Slit Experiment for Accurately measuring distances?

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