Poynting Vector And Energy Of E.M Fields

Description
Energy density in electric field, magnetic field, and then for e.m. field is calculated. Poynting vector is explained and its time average value calculated.Variation of Poynting vector with that of electric field and magnetic field is discussed . Computer generated image of acceleration and de-acceleration of a charge shows spectacular visuals. Radiation pressure on our body is calculated.The demonstration using two antenna and a grid shows polarization of e.m.waves. A transmitter and receiver is used to calculate the amount of radiation coming out of an antenna.

Prof.Walter Lewin, 8.02 Electricity and Magnetism, Massachusetts Institute of Technology: MIT OpenCourseWare), http://ocw.mit.edu (Accessed June 25, 2011). License: Creative Commons BY-NC-SA: http://ocw.mit.edu/terms/#cc