Two lasers are shining on a double slit, with slit separation ddd. Laser 1 has a wavelength of d/20, whereas laser 2 has a wavelength of d/15. The lasers produce separate interference patterns on a screen a distance 4.90 m away from the slits. Part B: What is the distance Δymax−max between the first maxima (on the same side of the central maximum) of the two patterns? Part C: What is the distance Δymax−min between the second maximum of laser 1 and the third minimum of laser 2, on the same side of the central maximum?

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Diffraction of light

In physics, the term diffraction is defined as the bending of light around the corners of the obstacle. As a light ray passes by an aperture, it bends around the edges or through slits, it spreads out through a narrow opening. The diffracted light will produce fringes of bright and dark or colored bands which are labeled as a diffraction pattern.