[填空题]
Monochromatic light of wavelength 653 nm falls on a slit. If the angle betw-rde9m w+hgrkl7h 6 c,een si4 *d(psmj(ajzchv a- 4nk ,/the first bright fringes on either side of the central(adjc(-*snik 4 4 sp,jhv/maz maximum is 32$^{\circ}\,$, estimate the slit width. $\mu m$
