Radar (Danish Wikipedia)

Science fiction historien kan frit downloades: gutenberg.org: Ralph 124C 41+: A Romance of the Year 2660 by Hugo Gernsback Citat: "...Forewords by DR. Lee De Forest and Fletcher Pratt...A pulsating polarized ether wave, if directed on a metal object can be reflected in the same manner as a light-ray is reflected from a bright surface or from a mirror. The reflection factor, however, varies with different metals. Thus the reflection factor from silver is 1,000 units, the reflection from iron 645, alomagnesium 460, etc. If, therefore, a polarized wave generator were directed toward space, the waves would take a direction as shown in the diagram, provided the parabolic wave reflector was used as shown. By manipulating the entire apparatus like a searchlight, waves would be sent over a large area. Sooner or later these waves would strike a space flyer. A small part of the waves would strike the metal body of the flyer, and these waves would be reflected back to the sending apparatus. Here they would fall on the Actinoscope (see diagram), which records only reflected waves, not direct ones..."

nobelprize.org (Global: 265^th place; Danish: 129^th place)

nobelprize.org: Guglielmo Marconi: The Nobel Prize in Physics 1909 Citat: "...on an historic day in December 1901, determined to prove that wireless waves were not affected by the curvature of the Earth, he used his system for transmitting the first wireless signals across the Atlantic between Poldhu, Cornwall, and St. John’s, Newfoundland, a distance of 2100 miles...again in Italy, gave a practical demonstration of the principles of radar, the coming of which he had first foretold in a lecture to the American Institute of Radio Engineers in New York in 1922...", backup

nobelprize.org: Guglielmo Marconi: The Nobel Prize in Physics 1909 Citat: "...on an historic day in December 1901, determined to prove that wireless waves were not affected by the curvature of the Earth, he used his system for transmitting the first wireless signals across the Atlantic between Poldhu, Cornwall, and St. John’s, Newfoundland, a distance of 2100 miles...again in Italy, gave a practical demonstration of the principles of radar, the coming of which he had first foretold in a lecture to the American Institute of Radio Engineers in New York in 1922...", backup
Omtale: Radio Electronics april 1958 side 46 og 48, "Wayback Machine". Arkiveret fra originalen den 27. maj 2014. Hentet 3. februar 2014.{{cite web}}: CS1-vedligeholdelse: BOT: original-url status ukendt (link), "Wayback Machine". Arkiveret fra originalen den 27. maj 2014. Hentet 3. februar 2014.{{cite web}}: CS1-vedligeholdelse: BOT: original-url status ukendt (link)