The first radio antenna used to identify an astronomical radio source was one built by Karl Guthe Jansky, an engineer with Bell Telephone Laboratories, in 1931.

He was instrumental in repeating Karl Guthe Jansky's pioneering but somewhat simple work at higher frequencies, and he went on to conduct the first sky survey at very high radio frequencies.

* 1932 — Karl Guthe Jansky discovers radio noise from the center of the Milky Way,

The earliest work on radio astronomy was conducted by Bell Labs engineer Karl Guthe Jansky in 1931 in Holmdel.

Karl Guthe Jansky ( October 22, 1905 – February 14, 1950 ) was an American physicist and radio engineer who in August 1931 first discovered radio waves emanating from the Milky Way.

Karl Guthe Jansky was born in what was then the Territory of Oklahoma where his father, Cyril M. Jansky, was Dean of the College of Engineering at the University of Oklahoma at Norman.

Karl Jansky was named after Dr. Karl Guthe, who had been an important mentor to Cyril M. Jansky.

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The unit is named after pioneering US radio astronomer Karl Guthe Jansky, and is defined as:

# REDIRECT Karl Guthe Jansky

The era of radio telescopes ( along with radio astronomy ) was born with Karl Guthe Jansky's serendipitous discovery of an astronomical radio source in 1931.

* Karl Eugen Guthe

This view, first proposed by F. W. Ghillany, afterward independently by Cornelis Petrus Tiele, and more fully by Stade, has been more completely worked out by Karl Budde ; and is accepted by H. Guthe, Gerrit Wildeboer, H. P. Smith, and G. A. Barton.

An early pioneer of radio astronomy was Grote Reber, an amateur astronomer who constructed the first purpose built radio telescope in the late 1930s to follow up on the discovery of radio wavelength emissions from space by Karl Jansky.

* May 5 – The detection by Karl Jansky of radio waves from the center of the Milky Way Galaxy is reported in the New York Times.

The initial detection of radio waves from an astronomical object was made in the 1930s, when Karl Jansky observed radiation coming from the Milky Way.

Karl Jansky made the discovery of the first astronomical radio source serendipitously in the early 1930s.

Karl Jansky attended college at the University of Wisconsin – Madison where he received his BS in physics in 1927.

Karl Jansky makes adjustments to his antenna, used to identify radio waves from outer space for the first time.

The NRAO postdoctoral fellowship program is named after Karl Jansky.

On January 10th, 2012, the NRAO announced the Very Large Array ( VLA ) would be renamed to the Karl G. Jansky Very Large Array in honor of Karl Janksy's contribution to Radio Astronomy.

In particular Chap. 1, Karl Jansky and the discovery of extraterrestrial radio waves pp. 3-42.

* My Brother Karl Jansky and His Discovery of Radio Waves from Beyond the Earth

* Accompanying 3 photos: from 1962, from c. 1960 ( with Grote Reber ), and one of Karl Jansky, another astronomy pioneer, from c. 1930.

* 1905 – Karl Amadeus Hartmann, German composer ( d. 1963 )

The term was coined in 1819 by philologist Karl Morgenstern in his university lectures, and later famously reprised by Wilhelm Dilthey, who legitimized it in 1870 and popularized it in 1905.

* Arndt, Karl J. R. The Harmony Society from its Beginnings in Germany in 1785 to its Liquidation in the United States in 1905.

Karl Amadeus Hartmann ( 2 August 1905 – 5 December 1963 ) was a German composer.

* 1978 – Karl Wallenda, German acrobat ( b. 1905 )

* December 5 – Karl Amadeus Hartmann, German composer ( b. 1905 )

* March 22 – Karl Wallenda, American circus performer ( b. 1905 )

Phased array transmission was originally developed in 1905 by Nobel Laureate Karl Ferdinand Braun who demonstrated enhanced transmission of radio waves in one direction.

His most important teacher was Ernst Karl Abbe ( 1840 – 1905 ) ( physicist, mathematician, and inventor ).

Most roof prism binoculars use either the Abbe-Koenig prism ( named after Ernst Karl Abbe and Albert Koenig and patented by Carl Zeiss in 1905 ) or Schmidt-Pechan prism ( invented in 1899 ) designs to erect the image and fold the optical path.

Berg first saw Die Büchse der Pandora in 1905 in a production by Karl Kraus, but did not begin work on his opera until 1929, after he had completed his other opera,

He offered the position to Hans Richter in February, 1905, who declined, to Felix Mottl in November, who was previously engaged, and then to previous director Nikisch, who declined ; the post was finally offered to Karl Muck, who accepted and began his duties in October, 1906..

( Karl Pearson, National Life from the Standpoint of Science 1905 )

The philosopher Karl Kautsky ( 1854 – 1938 ) published a partial edition of Marx's surplus-value critique, and later published a full, three-volume edition as Theorien über den Mehrwert ( Theories of Surplus Value, 1905 – 1910 ); the first volume was published in English as A History of Economic Theories ( 1952 ).

* Karl Husberg ( 1905 – 22 )

The term random walk was first introduced by Karl Pearson in 1905.

The Berezan ' Runestone, discovered in 1905 in Ukraine, was made by a Varangian ( Viking ) trader named Grani in memory of his business partner Karl.

Karl Wallenda ( January 21, 1905 – March 22, 1978 ) was the founder of The Flying Wallendas, an internationally known daredevil circus act remembered for performing death-defying stunts, often without a safety net.

* in Tanganyika, the area acquired on 17 February 1885 by Carl Peters for the Deutsche Ostafrikanische Gesellschaft ( DOAG, ' German East African Company ', that was initially under an Administrator: 27 May 1885-8 February 1888 Karl Peters ), since the proclamation of the German East African protectorate ( 7 May 1885-1 July 1890 ) over Witu in Kenya ; contested by Britain ; on 28 April 1888 Germany obtains a lease of the coastal strip from the Sultan of Zanzibar ), a single Reichskommissar is appointed ( 8 February 1888-21 February 1891: Hermann von Wissmann ( b. 1853-d. 1905 ), after him Governors of 1 January 1891 when proclaimed German East Africa colony ( Deutsch Ostafrika ), ending the ' private ' DOAG rule.

Bernhard Heinrich Karl Martin von Bülow ( May 3, 1849 – October 28, 1929 ), named in 1905 Prince ( Fürst ) von Bülow, was a German statesman who served as Secretary of State for Foreign Affairs for three years and then as Chancellor of the German Empire from 1900 to 1909.

* 1901 – 1905: Dr. Karl August Tettenborn

Ernst Karl Abbe ( January 23, 1840 – January 14, 1905 ) was a German physicist, optometrist, entrepreneur, and social reformer.

Karl was born at Vienna, Austrian Empire son of Ferdinand Bonaventura, 7th Prince Kinsky of Wchinitz and Tettau ( 1834 – 1904 ) the head of the princely line of the House of Kinsky dynasty and Princess Marie of Liechtenstein ( 1835 – 1905 ).