Chapter 25, Problem 7P

25.1 and 25.2 Polarization of waves and Discovery of electromagnetic waves

* The current in an antenna is oscillating with a period $2.0\times {10}^{-15}\text{s}.$

Using the same coordinate system, draw (a) two graphs that show how the $\stackrel{\to }{E}$ field and $\stackrel{\to }{B}$ field magnitudes at a point near the antenna change with time (label only the horizontal axis of the graph) and (b) two graph that show how the $\stackrel{\to }{E}$ field and $\stackrel{\to }{B}$ field magnitudes at a point very far from the antenna change with time (again label only the horizontal axis of the graph).