Lecture3

Lecture3 - Physics7CSSII Lecture4:Interference Agenda Quiz...

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Physics 7C SSII Lecture 4: Interference
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Agenda Quiz 2 Quick Review of Interference Basics Answer any 1D interference questions More on single source 2D interference Introduce time-dependent interference (beats) Introduce standing waves
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Please remember to write your  section! Section DL Times TA 1 WF 10:30-12:50 Ryan James 2 MW 2:10-4:30 Andy Scacco 3 MW 4:40-7:00 Daniel Phillips 4 MW 7:10-9:30 Marius Millea 6 TR 10:30-12:50 Charles Pierce 7 R 2:10-4:40 Daniel Phillips M 10:30-12:50 8 TR 4:40-7:00 Jeremy Mock 9 TR 7:10-9:30 Jeremy Mock 11 TF 2:10-4:30 Chris Westenburger
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Interference Fundamentals ΔΦ = …-4π, -2π, 0, 2π, 4π…. → constructive ΔΦ = …-3π, -π, π, 3π…. → destructive ΔΦ = anything else → partial 2πΔ(t/T) ±2πΔ(x/λ) Δφ ΔΦ Interference W1 – W2 C, D, or P Simplified Phase Chart
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Back to 2D Interference d Two slits create two overlapping wave fronts Crest Trough
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2D Interference: Single Source When we have a single source illuminating two slits, we know that the interference pattern only depends on Δx!
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Δx is often very hard to measure (You will see this in DL for laser light). In DL, you will use another approach to find Δx.
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This note was uploaded on 12/06/2009 for the course PHY 7C taught by Professor Mahmud during the Fall '08 term at UC Davis.

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Lecture3 - Physics7CSSII Lecture4:Interference Agenda Quiz...

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