[填空题]
Monochromatic light falling hg(k+n3lp;sd joi0xv 9 ;p5ril2 p+uq on two ji 6jh21*zloipl: l2v slits 0.016 mm apart produces the fifth-order fringe ahplolil*2v:z j 21ij 6t an 8.8$^{\circ}\,$ angle. What is the wavelength of the light used? $ \times10^{-7 }\;m$
