Run the simulation. Broadcast radio waves from KPhET. Wiggle the transmitter electron manually or have it oscillate automatically. Display the field as a curve or vectors. The strip chart shows the electron positions at the transmitter and at the receiver.
Take a tour of the spectrum that begins with radio waves and takes you through microwaves, infrared radiation, light, ultraviolet radiation, X-rays, and gamma rays. Hover over the pictures to find out more.