A plane light wave of wavelength A is incident normally on a grating consisting of 6 identical parallel slits a distance d apart. (a) At what angles with the normal are the interference maxima? (b) What is the angular width of the interference maxima, say from the maximum to the nearest null (zero intensity point)? (c) What is the ratio of the intensity at an interference maximum to the intensity obtained for a single slit? (d) Using a math software, make a plot of the interference pattern as a function of angle.

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Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.