Radar explained in ten seconds

EXTRA BONUS FACT: Typical radar can only send out radio waves in one direction at a time, which is why a doppler radar "sweeps" around in order to see in all directions. MinutePhysics is on Google+ - http://bit.ly/qzEwc6 And facebook - http://facebook.com/minutephysics And twitter - @minutephysics Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute! Music by Nathaniel Schroeder http://www.soundcloud.com/drschroeder Thanks to Nima Doroud for contributions. Created by Henry Reich