lecture24 - 26. Electromagnetic waves 1) Maxwells equations...

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Unformatted text preview: 26. Electromagnetic waves 1) Maxwells equations and electromagnetic waves 2) Properties of electromagnetic waves s m c / 10 3 1 8 = f c = Speed of light: Wave length: z direction of motion of wave E B x E v e.m. waves are transverse waves This wave is polarized in y direction Light is polarized when its electric fields oscillate in a single plane, rather than in any direction perpendicular to the direction of propagation. B Polarization of EM waves: Note: 1 nanometer = 10-9 meter Classification of Electromagnetic Waves Wavelength decreases Frequency increases Gausss law for electric field Gausss law for magnetic field Magnetic charges do not exist: Amperes law encl Q A d E = = A d B Faradays law - = A d B dt d l d E = E = B dt B d E - = n dA di j dV dQ C C / Charge density: Current density: Maxwells equations (review) (integral and in differential forms)...
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lecture24 - 26. Electromagnetic waves 1) Maxwells equations...

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