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Electromagnetic radiation

  1. Mar 15, 2005 #1
    Please help me answer these questions~~~thank you~~

    In October, 2004, the Canadian Light Source (CLS) was officially opened. This device is a synchrotron. It produces electromagnetic radiation that can be used to probe the structure of materials.
    1. Explain how electric and magnetic fields are employed to move electrons in the CLS.
    2. Why do the electrons produce electromagnetic radiation?
    3. Does relativity theory need to be incorporated into the design of the CLS?
    Last edited: Mar 15, 2005
  2. jcsd
  3. Mar 15, 2005 #2
    1. Electrons are charged and they respond to electromagnetic fields. Think of it as how you take a magnet and play with it by moving an iron ball bearing. Think of the iron ball bearing as the electron and the magnet as imposing an EM field on the ball.

    2. There is alot of EM radiation around us, light, infra red etc. etc. Electrons do this by absorbing and releasing photons (quanta of EM interaction). This is also because of the charged nature of electrons they do react with photons alot.

    3. Relativity theory (in this case, mostly special relativity) is taken into account because those particles are so light (from the perspective of the macroscopic world), it is really a piece of cake to give them velocities close to light speed. And that's when relativistic effects have to be taken into consideration.
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