[填空题]
When blue light of wavj)bdvsnbc9 31elength 440 nm falls on a single s 84igbs*)ng bl um:-s 8lvcn5wlit, the first dark bands on either side of center are separate* -simvcnbngl45:bu)w s88 lgd by 55.0$^{\circ}\,$. Determine the width of the slit. $ \times10^{-7 }\;m$
