Lecture 3 SSI 10 Pre Lecture

Lecture 3 SSI 10 Pre Lecture - Physics7CSSI2010...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
Physics 7C SSI 2010 Lecture 3: Wave Interference
Background image of page 1

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

View Full DocumentRight Arrow Icon
Today’s Agenda Review of Interference Basics and superposition of 1D waves (as studied in DL 04) Introduction to interference patterns resulting from 2D wave superposition Quiz 1
Background image of page 2
Interference Basics y tot (x,t) = y 1 (x,t) + y 2 (x,t) Interference occurs when two waves occupy the same space at the same time. What does the resultant “total” wave look like? Note: Right now we are only considering the case where the two waves have identical frequencies.
Background image of page 3

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

View Full DocumentRight Arrow Icon
Interference Basics Three possibilities 1) Constructive Interference 2) Destructive Interference 3) Partial Interference Anything in between!
Background image of page 4
Superposition of Sound Waves Greater pressure fluctuations More & less intense means louder and softer +
Background image of page 5

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

View Full DocumentRight Arrow Icon
Superposition of Sound Waves Amplitude is zero + No more pressure fluctuations No sound!
Background image of page 6
Interference Basics Q) How do we determine if there is constructive, destructive or partial interference? A) Figure out the total phase difference! Waves are “in phase”: ΔΦ = (even number)*π → Constructive interference Waves are “out of phase”: ΔΦ = (odd number)*π → Destructive interference Neither “in phase” nor “out of phase” → Partial interference
Background image of page 7

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

View Full DocumentRight Arrow Icon
Phase charts help us determine ΔΦ! 2πt/T
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 29

Lecture 3 SSI 10 Pre Lecture - Physics7CSSI2010...

This preview shows document pages 1 - 9. Sign up to view the full document.

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