Try the following links: http://www.nrl.navy.mil/content.php?P=RADA R
" In the autumn of 1922, NRL made the first detection of a moving ship by radio waves and, as a result, discovered the radar principle. Eight years after the initial discovery of the radar principle, NRL scientists noted that the reflections of radio waves from an airplane could also be detected."
The first US production prototype shipboard antenna, the XAF, from the battleship NEW YORK, is preserved at the Washington Navy Yard museum. http://www.museums.simonides.org/usa/nava lhiscen.h tm
http://www.de220.com/Electronics/Radar/Radar.htm
" 1904: 30 April. The "telemobiloscope" (radar) patented and demonstrated by German engineer Christian Hülsmeyer. Telefunken refuses to buy his patents. 1916: February. German Richard Scherl produced the 10cm wavelength "Strahlenzieler" (Raypointer). German Navy rejects it as "not important tot he war effort." 1920s: British Dr. Robert Watson-Watt discovers the theory of radar just after WW I while trying to find a way to detect thunderstorms. 1933: Germany develops the "seetakt" carrier wave (CW) radar that operates at 50 centimeters on 50 watts. It can detect a 500 ton ship at over 7 miles. It is used exclusively as a range finder."
Not mentioned in any of these links is the 'iceberg detector' carried by the French liner NORMANDIE from about 1935 which was also a radar.
There is plenty of evidence for independent development of the radar principle: The arguments come on significance of each country's work and the producibility of the sets.
Slashdot Mirror
Try the following links:A R
a lhiscen.h tm
m
http://www.nrl.navy.mil/content.php?P=RAD
" In the autumn of 1922, NRL made the first detection of a moving ship by radio waves and, as a result, discovered the radar principle. Eight years after the initial discovery of the radar principle, NRL scientists noted that the reflections of radio waves from an airplane could also be detected."
The first US production prototype shipboard antenna, the XAF, from the battleship NEW YORK, is preserved at the Washington Navy Yard museum.
http://www.museums.simonides.org/usa/nav
http://www.de220.com/Electronics/Radar/Radar.ht
" 1904: 30 April. The "telemobiloscope" (radar) patented and demonstrated by German engineer Christian Hülsmeyer. Telefunken refuses to buy his patents.
1916: February. German Richard Scherl produced the 10cm wavelength "Strahlenzieler" (Raypointer). German Navy rejects it as "not important tot he war effort."
1920s: British Dr. Robert Watson-Watt discovers the theory of radar just after WW I while trying to find a way to detect thunderstorms.
1933: Germany develops the "seetakt" carrier wave (CW) radar that operates at 50 centimeters on 50 watts. It can detect a 500 ton ship at over 7 miles. It is used exclusively as a range finder."
Not mentioned in any of these links is the 'iceberg detector' carried by the French liner NORMANDIE from about 1935 which was also a radar.
There is plenty of evidence for independent development of the radar principle: The arguments come on significance of each country's work and the producibility of the sets.
Brooks A Rowlett