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The Doppler Effect
The Doppler Effect was proposed by Christian Doppler in Prague , It is used to measure the velocity of detected objects , The effect was used in many radars and is still used . -
First discoveries
During the 19th century , German physicist Heinrich Hertz conducted experiments that proved the existence of electromagnetic waves . he found that these waves would transmit through different types of materials and also would reflect off metal surfaces in his lab -
Christian Hulsmeyer
In 1904, Christian Hülsmeyer gave public demonstrations in Germany and the Netherlands of the use of radio echoes to detect ships so that collisions could be avoided. His device consisted of a simple spark gap used to generate a signal. He is credited with the actual discovery of the radar . -
Robert Watson-Watt
Robert Watson-Watt's work resulted in the design and installation of aircraft detection and tracking stations on the east and south coasts of England in 1939 , Since WWII was approaching . His system aided significantly in winning the Battle of Britain -
Arnold Wilkins
Arnold Wilkins was a pioneer in Radar development , He suggested that reflected radio waves might be used to detect aircraft , Along with Robert Watson-Watt and his suggestions led to the first ground to air radar detection -
Cavity magnetron
John Randall created a device that generates microwaves using electrons in a magnetic field -
First weather radar
During World War II, military radar operators noticed disturbances in echoes that were returning due to weather effects . David Atlas studied these waves and his results would help create the first weather radar . -
Present Day
Today , Radars are used to detect speed (Radar Guns) , Record weather , and are used in combat situations .
