Transcription of Chapter 14 Interference and Diffraction
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Chapter 14 Interference and Diffraction
Chapter 14. Interference and Diffraction Superposition of Waves .. 14-2. Young's Double-Slit Experiment .. 14-4. Example : Double-Slit 14-7. Intensity Distribution .. 14-8. Example : Intensity of Three-Slit Interference .. 14-11. 14-13. Single-Slit 14-13. Example : Single-Slit Diffraction .. 14-15. Intensity of Single-Slit Diffraction .. 14-16. Intensity of Double-Slit Diffraction 14-19. Diffraction Grating .. 14-20. 14-22. Appendix: Computing the Total Electric 14-23. Solved Problems .. 14-26. Double-Slit Experiment .. 14-26. Phase Difference .. 14-27. Constructive 14-28. Intensity in Double-Slit Interference .. 14-29. Second-Order Bright Fringe .. 14-30. Intensity in Double-Slit Diffraction .
22 rr21−=()r2+r1(r2−r1)=2drsinθ (14.2.3) In the limit L, i.e., the distance to the screen is much greater than the distance between the slits, the sum of and may be approximated by d r1 r2 rr12+ ≈2r, and the path difference becomes δ=rr21−≈dsinθ (14.2.4) In this limit, the two rays and are essentially treated as being parallel (see Figure
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