PHY2049ch36A%284-16-10%29

PHY2049ch36A%284-16-10%29 - Wave Interference and...

This preview shows pages 1–6. Sign up to view the full content.

4/16/10 Tier 2 Centers. Paul Avery 1 PHY 2049: Chapter 36 1 Wave Interference and Diffraction: II PHY 2049 Physics 2 with Calculus PHY 2049: Chapter 35 2 Double Slit Interference ± Incident light ² Light waves strike 2 narrow slits close together ² Light goes through both slits, diffracts in all directions ± Interference ² At certain angles, waves constructively interfere ± brighter ² At other angles, waves destructively interfere ± darker Light waves Screen Diffracted light Interference Slits

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
4/16/10 Tier 2 Centers. Paul Avery 2 PHY 2049: Chapter 35 3 Basic Requirements for Two Slit Setup ± Light beam strikes normal to slits ± Light beam illuminates both slits equally ± Light beam is in phase at both slits: coherent ² Young used small slit in front of 2 slits to get coherence ² Modern versions use laser for coherence (much brighter) PHY 2049: Chapter 35 4 Two Slit Analysis ± d Path difference = d sin ±
4/16/10 Tier 2 Centers. Paul Avery 3 PHY 2049: Chapter 35 5 Double Slit Intensity Pattern on Screen PHY 2049: Chapter 35 6 Example of Double Slit Max and Min

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
4/16/10 Tier 2 Centers. Paul Avery 4 PHY 2049: Chapter 35 7 Example 1: d = 5 ± m sin ± max ± max sin ± min ± min 0 0 0 ±0.1 ±5.7 ±1 ±0.2 ±11.5 ±0.3 ±17.5 ±2 ±0.4 ±23.6 ±0.5 ±30 ±3 ±0.6 ±36.9 ±0.7 ±44.4 ±4 ±0.8 ±53.1 ±0.9 ±64.2 ±5 ±1.0 ±90 ±1.1 -- PHY 2049: Chapter 35 8 Intensity vs Angle for d = 5 ±
4/16/10 Tier 2 Centers. Paul Avery 5 PHY 2049: Chapter 35 9 Example 2: d = 2.0 μ m, ± = 550 nm ± How many bright fringes? Where are they? ± m can equal 0, ±1, ±2, ±3

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/23/2010 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

Page1 / 19

PHY2049ch36A%284-16-10%29 - Wave Interference and...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online