Seeing radio waves with a light bulb

In this article from Make magazine, Diana Eng, KC2UHB demonstrates how, by using a low power amateur radio transmitter and a simple light bulb receiver circuit, we see how radio waves and electromagnetic induction transmit energy and signals wirelessly through the air.

We also see how dipole and Yagi antennas radiate their energy in different patterns

Now visit the Make website and see how to build your own dipole receiving antenna! http://blog.makezine.com/archive/2010/02/
seeing_radio_waves_with_a_light_bul.html