題組內容

9. To study the interference of two beams, instead of using two slits, one can use one light source and a reflecting surface to construct an interferometer, as shown in the figure. Suppose that the incidence angle is always big enough to assume that the intensities of the direct beam and reflected beam are very close to each other.65a874ec9d4eb.jpg

(b) If the mirror is made of highly conductive metal such as copper or gold, how would the interference pattern differ from that of the previous case? Provide your reason. (5%)