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Introductory Physics Homework Help
A diffraction grating formed by parallel adjacent tracks on a CDROM
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[QUOTE="help I have 12 hours, post: 6315460, member: 674106"] [B]Homework Statement:[/B] The parallel tracks on a CD-ROM reflect light just like a diffraction grating. Looking at a CD-ROM under white light, you observe a bright reflection of 475 nm blue light at 40.6° from normal incidence. The next bright blue reflection occurs at 77.2°. Calculate the spacing between the CD-ROM tracks. Show your work here, and then enter your final numeric answer in the next answer box. [B]Relevant Equations:[/B] (d) sin(theta)=(wave length)*m (d)sin(40.6)=(475*10^-9)(1) d=730*10^-9 (m) prof says answer is 1460*10^-9 (m) tho [/QUOTE]
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A diffraction grating formed by parallel adjacent tracks on a CDROM
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