Imagine a harmonic plane electromagnetic wave traveling in the z- direction in a homogeneous isotropic dielectric. If the wave, whose amplitude is E0, has a magnitude of zero at t = 0 and z = 0, (a) show that its energy density is given by u(t) = eE sin? k(z - vt) b)find an expression for the irradiance of the wave?
Imagine a harmonic plane electromagnetic wave traveling in the z- direction in a homogeneous isotropic dielectric. If the wave, whose amplitude is E0, has a magnitude of zero at t = 0 and z = 0, (a) show that its energy density is given by u(t) = eE sin? k(z - vt) b)find an expression for the irradiance of the wave?
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Transcribed Image Text:Imagine a harmonic plane electromagnetic wave traveling in the z-
direction in a homogeneous isotropic dielectric. If the wave, whose
amplitude is E0, has a magnitude of zero at t = 0 and z = 0, (a) show that
its energy density is given by
u(t) = eE sin? k(z - vt)
%3D
b)find an expression for the irradiance of the wave?
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