Fields from a Light Bulb we can reasonably model a 75-W incandescent light-bulb as a sphere 6.0 cm in diameter. Typically, only about 5% of the energy goes to visible light me rest goes largely to non-visible infrared radiation.
(a) What is the visible-light intensity (in W/m2) at the surface of the bulb?
(b) What are the amplitudes of the electric and magnetic fields at this surface, for a sinusoidal wave with this intensity?