P. 3851. A diffraction grating is illuminated by light of wavelength 598 nm. The distance between the lines in the diffraction pattern formed on a screen 5 m away from the grating is 2 cm. Find the distance between two rulings. How would the diffraction pattern change if half of the grating parallel to the rulings, or perpendicular to the rulings was covered?
Deadline expired on 11 January 2006.