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Lecture: 36 (iq34) Radiation field due to the acceleration of charge particles

1. Field pattern before and after acceleration

2. Derivation of radiation field formula (see Ch24.h2, also Ch24.11)

Properties of the EM pulse:

o E perpendicular to B

o Direction of propagation

o Speed of propagation in free space (a universal speed: c)

o E=cB

3. Three exercises.

4. Sinusoidal em waves

5. EM radiation spectrum.

Announcement:

o Midterm3 class average 77. Please see me if you have any questions or concerns.

o 303L LA job opportunity in the first summer session

o We are in the process of planning a 303L curriculum development project for the summer. Presently there is an opening for a 20 hrs/wk LA position in the first summer session. The main responsibility of the LA is to make clicker question slides and to post them on the web.

o In organizing 303L clicker questions used in my section, the LA will have the benefit to work with me to review the course content once again. The clicker slides will become a part of online supplementary material in MI-curriculum. The LA will be able to earn a line-item entry in his/her resume -- supporting MI-curriculum development.

o Some Power-Point knowledge in drawing figures and making slides is required. If you are interested in applying for this job opportunity please contact me as soon as possible. Email me your resume with a brief explanation on yourself. Include in the subject line: LA job, summer2012. The deadline of application is Friday, April 18.

o Those who have attended my lectures in Fa11 2011 or are currently attending my lecture are preferred, since they are more familiar with my clicker questions.