### Diagnostics: Electromagnetic Waves
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Fundamentals: After properly studying this module, you should be able to:

- obtain the wave equations for electric and magnetic fields in vacuum starting from Maxwell's equations
- give the form of \({\boldsymbol E}\) and \({\boldsymbol B}\) fields for a monochromatic plane wave
- for linear media, obtain the wave equations
- explain how waveguides work

Applications: As a strict minimum, you should be able to:

- compute the Poynting vector for a monochromatic plane wave
- rederive the formulas for fields and reflection/transmission coefficients for an EM wave hitting an interface at normal incidence
- rederive the laws of reflection and of refraction (Snell's law)
- get the reflection and transmission coefficients for the above

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Author: Jean-Sébastien Caux

Created: 2022-03-24 Thu 08:42