homework_13 - the loop Hint We computed the emission when...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
ELECTRODYNAMICS PROBLEM SET 13- THE LAST ONE due May 4 th , before class I. SCATTERING OF LONG WAVES FROM A DIELECTRIC SPHERE Compute the (differential) scattering cross section of a dielectric sphere with dielectric constant ± and radius R . Assume the wavelength of the incoming wave λ is much larger than R . Hint: The incoming wave will polarize the sphere and its magnetic moment will radiate. II. EMISSION PATTERN OF A PARTICLE MOVING AROUND A CIRCLE Consider a relativistic particle moving around a circle of radius a with angular frequency ω . Compute the power emitted averaged over cycles as a function of the angle between the direction of emission and the axis going through
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: the loop. Hint: We computed the emission when the velocity and the acceleration are orthogonal in class already. All you have to do is to average over a full turn. It should be possible although I have never done it. III. CLASSICAL ATOMS ARE UNSTABLE The classical model of an atom has an electron in a circular orbit around the nucleus. Classically, the electron should radiate, loose energy and fall into the nucleus. Estimate how long it would take for an electron to fall into a nucleus....
View Full Document

This note was uploaded on 12/29/2011 for the course PHYSICS 606 taught by Professor Bedaque during the Spring '11 term at Maryland.

Ask a homework question - tutors are online