jansky
a unit of flux density for electromagnetic radiation, used chiefly in radio astronomy. Abbreviation: Jy
Origin of jansky
1Words Nearby jansky
Other definitions for Jansky (2 of 2)
Karl Guthe, 1905–50, U.S. engineer: pioneer in radio astronomy.
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How to use jansky in a sentence
He improved upon jansky’s antenna — a bunch of metal tubes held up by a pivoting wooden trestle — and fashioned a parabolic metal dish for focusing incoming radio waves to a point, where an amplifier boosted the feeble signal.
How radio astronomy put new eyes on the cosmos | Christopher Crockett | August 31, 2021 | Science NewsHis efforts were wildly successful, reproducing jansky’s observations and then creating the first radio map of the sky.
In fact, the very first radio astronomy experiment can be traced back before jansky to August of 1924, when Mars made its closest pass to Earth in nearly a century.
Ironically, jansky’s original goal — to filter out natural sources of radio waves and make way for communication technology — is now reversed for radio astronomers trying to study the universe in the age of modern electronics.
jansky’s discovery was mostly met with mild curiosity by the astronomy community.
Later observers, for example jansky and Moss, established four groups.
The Organism as a Whole | Jacques Loeb
British Dictionary definitions for jansky (1 of 2)
/ (ˈdʒænskɪ) /
a unit of flux density equal to 10 –26 W m –2 Hz –1, used predominantly in radio and infrared astronomy: Symbol: Jy
Origin of jansky
1British Dictionary definitions for Jansky (2 of 2)
/ (ˈdʒænskɪ) /
Karl Guthe 1905–50, US electrical engineer. He discovered a source of radio waves outside the solar system (1932) and pioneered radio astronomy
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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