A History of Google Doodles

February 22, 2012
Google's undulating, animated doodle of an electromagnetic wave was an homage to Heinrich Rudolph Hertz. The German physicist was born on February 22, 1857 in Hamburg, and is most famous for proving the existence of electromagnetic waves—the frequency of which is now measured in his namesake unit of measurement, the Hertz (Hz).

• The Story of Google Doodles