Lecture_04

Lecture_04 - PHYS 342 Fall 2010 Lecture 04: The...

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

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: PHYS 342 Fall 2010 Lecture 04: The Wave-Particle Duality Previous discussion focused on “particle” nature of light. What evidence that light is a wave? Lecture 04 is evidence that light is a wave? Ron Reifenberger Birck Nanotechnology Center Purdue University 1 Side view! Not to scale! Monochromatic Light Source Interference Effect for Light x Top view! 2 Young’s Double Slit Geometry screen screen α α a) b) θ θ near screen far screen c) as distance to screen increases, α0 α0 α0 α0 (α=0 (α=0 (α=0 (α=0 is the limiting condition for parallel rays ) θ θ θ d two parallel rays Top view! 3 far screen condition θ θ θ d two parallel rays d sin( θ ) Top view! A B C D E ( ) , sin 2 2 sin 2 constructive interference when sin Path Difference but Path Difference d phase change path difference d n D ABC AB BC d n BC E E A DE D B θ π λ π θ π λ λ θ =- =- = = = = × = = + = 4 Young’s double slit was discovered in 1803....
View Full Document

This note was uploaded on 12/08/2011 for the course PHYS 342 taught by Professor Staff during the Fall '08 term at Purdue.

Page1 / 14

Lecture_04 - PHYS 342 Fall 2010 Lecture 04: The...

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

View Full Document Right Arrow Icon
Ask a homework question - tutors are online