# hw10 - Phys 3327 Fall 2010 HW 10 Due Wednesday in lecture...

• Notes
• 2

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

Phys 3327 Fall 2010 HW 10 Due Wednesday 11/17/10 in lecture Homework 10 Retarded Potentials and Fields Radiation and Antennas Ex. 10.1: Lienard-Wiechert Potentials In class professor Cohen wrote down the formulas for the scalar and vector potentials. Work through section 8.3 of the book and derive the Lienard-Wiechert potentials filling in any calculation details that you think are missing from the book. This problem will be graded based on effort and we basically want you to show your level of understanding. Ex. 10.2: Li´ enard-Wichert Fields (Optional. Extra Credit 10pts) In class professor Cohen wrote down the Lienard-Wichert fields. Here you have a chance to derive them while getting some guidance. The potentials of a point charge q moving along a prescribed path r q ( t ) are Φ(r , t ) = q R - β · R , A ( r , r ) = R - β · R , where R = r - r q ( t ret ) and β = u q ( t ret ) /c , where u q is the velocity of the charge. The position r q and velocity u q of the charge are evaluated at the ”retarded tim” t ret . The retarded time is the unique time

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

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