Hertz-2011-hp

The Google Doodle today is in honour of Heinrich Hertz, who would have been celebrating his 155th birthday  – if he hadn’t died from Wegener’s granulomatosis in 1894, or something else since then.

Hertz was the first to conclusively prove the existence of electromagnetic waves.

230px-heinrich_rudolf_hertz

In 1930, the Hertz was made the SI unit of frequency which measures the number of cycles per second of a periodic phenomenon.

Google frequently replaces

its familiar Goooogle logo with a special design to commemorate special days. It has used animated images such as the Hertz logo only rarely.

Happy birthday, Heinrich.

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