[填空题]
In a double-slit experiment0s0)jw jndo1p0myh +h , 0g3/)hwvun 9+ f rshqrthe third-order maximum for light of wavelength 500 nm is located 12 mm from the central bright spot on a screen 1.6 m from the slits. Light of wavelength 650 nm is then projected through the same slits. How far from the central bright spot will the second-order mvwh+fqr/0 un )h s93rgaximum of this light be located? mm