i wonder how we can describe the degree of diffraction of waves in a single slit in a mathematical formula , with the variables , wavelength and slit width ....my attempt to it is to use the equation for double-slit interference(or plane transmission grating) , namely 'd sin theta=n lambda' ...it is clearly shown that lambda is directly proportional to the value of sin theta while the slit separation is inversely proportional to it....as the value of sin theta is also related to the degree of diffraction of the two diffracted waves.....the equation can also be applied to describe the degree of diffraction of waves in a single slit.......does anyone have other suggestions?(adsbygoogle = window.adsbygoogle || []).push({});

another question , how can the diffracted waves form alternating dark and bright fringes on a screen ? it makes me hard to distinguish 'interference' and 'diffraction'

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# Degree of diffraction in single slits

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