Definitions for jansky
jan·sky

WiktionaryRate this definition:0.0 / 0 votes

1. janskynoun

   A non-SI unit measuring electromagnetic flux density equal to 10 watts per square meter per hertz. The symbol for jansky is Jy.

2. Etymology: Named after radio astronomer Karl Guthe Jansky.

WikidataRate this definition:0.0 / 0 votes

1. Jansky

   The flux unit or jansky is a non-SI unit of spectral flux density equivalent to 10−26 watts per square metre per hertz. The flux density or monochromatic flux, of a source is the integral of the spectral radiance, over the source solid angle: The unit is named after pioneering US radio astronomer Karl Guthe Jansky, and is defined as: The flux density in Jy can be converted to a magnitude basis, for suitable assumptions about the spectrum. For instance, converting an AB magnitude to a flux-density in microjanskys is straightforward: Since the jansky is obtained by integrating over the whole source solid angle, it is most simply used to describe point sources; for example, the Third Cambridge Catalogue of Radio Sources reports results in Jy. For extended sources, the surface brightness is often described with units of Jy per solid angle; for example, Far Infra-Red maps from the IRAS satellite are in MJy/sr. While extended sources at all wavelengths can be reported with these units, for radio frequency maps, extended sources have traditionally been described in terms of a brightness temperature; for example the Haslam et al. 408 MHz all-sky continuum survey is reported in terms of a brightness temperature in K.

Surnames Frequency by Census RecordsRate this definition:0.0 / 0 votes

1. JANSKY

   According to the U.S. Census Bureau, Jansky is ranked #23785 in terms of the most common surnames in America.
   
   The Jansky surname appeared 1,063 times in the 2010 census and if you were to sample 100,000 people in the United States, approximately 0 would have the surname Jansky.
   
   94.9% or 1,009 total occurrences were White.
   2.9% or 31 total occurrences were of Hispanic origin.
   1.1% or 12 total occurrences were of two or more races.
   0.6% or 7 total occurrences were Asian.

How to pronounce jansky?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say jansky in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of jansky in Chaldean Numerology is: 4

2. Pythagorean Numerology

   The numerical value of jansky in Pythagorean Numerology is: 8

Popularity rank by frequency of use

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Jansky
2. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=jansky
3. ^ Surnames Frequency by Census Records
   https://www.census.gov/topics/population/genealogy/data/2010_surnames.html