The shi ny surface of a CD is imprinted with millions of
Chapter 17, Problem 52(choose chapter or problem)
The shi ny surface of a CD is imprinted with millions of tinypits, arranged in a pattern of thousands of essentially concentriccircles that act like a reflection grating when light shines onthem. You decide to determine the distance between those circlesby aiming a laser pointer (with A = 680 nm) perpendicularto the disk and measuring the diffraction pattern reflected onto ascreen 1.5 m from the disk. The central bright spot you expectedto see is blocked by the laser pointer itself. You do find twoother bright spots separated by 1.4 m, one on either side of themissing central spot. The rest of the pattern is apparently diffractedat angles too great to show on your screen. What is thedistance between the ci rcles on the CD's surface?
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