Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A unit of electromagnetic flux density often used in radio astronomy, equal to 10−26 watts per square meter per hertz.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A non-
SI unit (symbol Jy) measuringelectromagnetic flux density equal to 10-26watts per squaremeter perhertz .
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
[After Karl Jansky, (1905–1950), American radio engineer.]
from Wiktionary, Creative Commons Attribution/Share-Alike License
Named after radio astronomer Karl Guthe Jansky.
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Examples
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reesetee commented on the word jansky
Use to measure the strength of radio signals from space. A jansky is a non-SI unit of electromagnetic flux density equivalent to 10−26 watts per square meter per hertz.
April 21, 2009