In: Physics
A monochromatic light source emits 164 W of average electromagnetic power uniformly in all directions. The speed of light is 3 � 10^8 m/s. Calculate the average electric-field energy density 4 m from the source. Answer in units of J/m3 . (uE=1/2 E0E2)
Calculate the average magnetic-field energy density at the same distance from the source. uE=1/2 E0(cB)2
Find the wave intensity at this location.
What is the pressure exerted by the light on a mirror located at the same distance from the source, assuming normal incidence and total reflection?