Lecture20

Lecture20 - Lecture 20 Purdue University, Physics 220 1...

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: Lecture 20 Purdue University, Physics 220 1 Lecture 20 Waves Textbook Sections: 12.5-12.8 PHYSICS 220 Midterm Exam 2 Scaled to 150 pts: this is what it matters. Mean: 102.4 Standard Deviation: 28.6 Your exams and keys are accessible through CHIP. Exam papers will be discarded on April 14. Lecture 13 Purdue University, Physics 220 2 Lecture 20 Purdue University, Physics 220 3 The net disturbance is the sum of the individual disturbances. When waves cross in a point and have the same sign amplitude, they add constructively. Since intensity is proportional to amplitude squared, the resulted intensity is more than the sum of the intensities of individual waves. Constructive Interference Lecture 20 Purdue University, Physics 220 4 The net disturbance is the sum of the individual disturbances. When waves cross in a point and have the opposite sign amplitude, they add destructively. Since intensity is proportional to amplitude squared, the resulted intensity is less than the sum of the intensities of individual waves. Destructive Interference Lecture 20 Purdue University, Physics 220 5 In phase =0 Out of phase by = Out of phase by =(2/3) Fully Destructive Destructive Constructive Destructive Interference Lecture 20...
View Full Document

Page1 / 21

Lecture20 - Lecture 20 Purdue University, Physics 220 1...

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