ch18 - The Big Ideas-Chapter 18(Serway and Beichner Physics...

This preview shows pages 1–2. Sign up to view the full content.

The Big Ideas—Chapter 18 (Serway and Beichner, Physics for Scientists and Engineers, 5 th Edition) AJM:2/5/01 1 Sections 1 Sinusoidal waves of the same frequency interfere in a manner that depends on their phase difference. When that phase difference is zero, we say the waves are “in phase” and they interfere “constructively” to form a wave whose amplitude is the sum of the amplitudes of the constituent waves. When that phase difference is 180 ° , we say the waves are “out of phase” and they interfere “destructively” to form a wave whose amplitude is the difference of the amplitudes of the constituent waves. The phase difference is often directly the result of a difference in the distances (the “path difference”) to two sources or along two paths to the same source. φ = 2 π r λ Section 2 When two waves of the same amplitude and frequency traveling in opposite directions interfere, the result is a standing wave.

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.

{[ snackBarMessage ]}

What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern