Keywords: Slit 20um 40um.jpg en Single slit diffraction patterns; the top pattern is of a 20 μm slit the bottom one of a 40 μm slit; note that the minima caused by the wider slit are twice as far apart Light source sunlight through a no 29 Wratten filter; projected on the camera CCD without a lens own Pieter Kuiper 2009-08-23 Diffraction ImageNote 1 1540 149 1584 526 3216 1418 2 20 μm slit width ImageNoteEnd 1 ImageNote 2 1560 771 1568 382 3216 1418 2 40 μm slit width ImageNoteEnd 2 ImageNote 3 1298 317 80 864 3216 1418 2 First minimum of the 20 μm slit pattern is at the the same angle as the second minimum of the 40 μm pattern ImageNoteEnd 3 |