Question: Suppose the interference pattern of Fig. 10.18b was created by a thin wire illuminated by light from a helium-neon laser at a wavelength of 633 nm. Determine the diameter of the wire.
Fig. - The lower curve shows the pattern of intensity from a single slit of width 100λ . The upper curve is the pattern of intensity of laser light diffracted around on opaque strip of width 100λ. the width of the laser beam is 16 times of the width of the strip.