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Henri Busignies and the Development of the Huff-Duff System

Henri Busignies and the Development of the Huff-Duff System

On December 29, 1905, French engineer Henri Gaston Busignies was born. Busignies is best known for his contributions to radar, radio communication, and radio navigation. His invention (1936) of high-frequency direction finders (HF/DF, or “Huff-Duff“) permitted the U.S. Navy during World War II to detect enemy transmissions and quickly pinpoint the direction from which a radio transmission was coming. Early Years Henri Gaston Busignies was born in Sceaux, in suburban Paris, France, the…
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Edward Appleton and the Discovery of the Ionosphere

Edward Appleton and the Discovery of the Ionosphere

On September 6, 1892, English physicist Sir Edward Victor Appleton was born. Appleton won the Nobel Prize in Physics in 1947 for his seminal work proving the existence of the ionosphere during experiments carried out in 1924. “I am only a physicist with nothing material to show for my labours. I have never even seen the ionosphere, although I have worked on the subject for thirty years. That does show how lucky people can…
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