3. A transverse plane wave is incident normally on a perfectly absorbing flat screen. Note that for a transverse electromagnetic wave the Ẽ and B fields are perpendicu lar to the direction of propagation. By assuming that linear momentum is conserved, show that the pressure (called radiation pressure) exerted on the screen is equal to the field energy per unit volume in the wave.
3. A transverse plane wave is incident normally on a perfectly absorbing flat screen. Note that for a transverse electromagnetic wave the Ẽ and B fields are perpendicu lar to the direction of propagation. By assuming that linear momentum is conserved, show that the pressure (called radiation pressure) exerted on the screen is equal to the field energy per unit volume in the wave.
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Transcribed Image Text:3. A transverse plane wave is incident normally on a perfectly absorbing flat screen.
Note that for a transverse electromagnetic wave the Ẽ and B fields are perpendicu-
lar to the direction of propagation. By assuming that linear momentum is conserved,
show that the pressure (called radiation pressure) exerted on the screen is equal to
the field energy per unit volume in the wave.
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