Astudent is doing a lab experiment in which she uses diffraction to measure the width of a shaft of her hair. she shines a 530 nm green laser pointer on a single hair, which produces a diffraction pattern on a screen 1.2 m away. the width of the central maximum of the pattern is 14 mm. a. what is the thickness of the hair? (91µm) b. if she chose a wider shaft of hair, how would this change the width of the central maximum? (b): for a single slit, we know that a wider slit gives a narrower pattern; the same is true for the hair.