1. The problem statement, all variables and given/known data A Fraunhofer diffraction pattern is produced on a screen 218 cm from a single slit. The distance from the center of the central maximum to the first-order maximum is 7620 times the wavelength (lambda). Calculate the slit width. Answer in __m 2. Relevant equations 3. The attempt at a solution I have no idea how to even start this problem but this is what I tried. 7620 = (1.5 * 2.18)/a where a is the slit width. This was not correct. I would really appreciate any kind of help on this!