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The nearest known quasar, Markarian 231, is about 581 million light-years from Earth, [129] while others have been discovered as far away as UHZ1, roughly 13.2 billion light-years distant. [ 130 ] [ 131 ] Quasars are noteworthy for providing the first demonstration of the phenomenon that gravity can act as a lens for light .
Ionizing radiation from cosmic rays, their resulting neutron radiation, [104] and the Sun results in an average radiation level of 1.369 millisieverts per day during lunar daytime, [14] which is about 2.6 times more than the level on the International Space Station, 5–10 times more than the level during a trans-Atlantic flight, and 200 times ...
Make a 360-degree turn immediately (turning to the ____). or I am making a 360-degree turn immediately (turning to the ____). QCS : My reception on ____ frequency has broken down. QCX : What is your full call sign? My full call sign is ____ . or Use your full call sign until further notice. QCY : I am working on a trailing aerial. or Work on a ...
An octave—two notes that have a frequency ratio of 2:1—spans twelve semitones and therefore 1200 cents. The ratio of frequencies one cent apart is precisely equal to 2 1 ⁄ 1200 = 1200 √ 2, the 1200th root of 2, which is approximately 1.000 577 7895. Thus, raising a frequency by one cent corresponds to multiplying the original frequency ...
Vaughan Williams c. 1920. Ralph Vaughan Williams OM (/ ˌ r eɪ f v ɔː n ˈ w ɪ l j ə m z / ⓘ RAYF vawn WIL-yəmz; [1] [n 1] 12 October 1872 – 26 August 1958) was an English composer. . His works include operas, ballets, chamber music, secular and religious vocal pieces and orchestral compositions including nine symphonies, written over sixty yea
The Longhorns finished 20–4 overall and 14–4 in conference play in 1922. Missing five players to injury and grades in the latter part of the season, including the SWC's leading scorer in Phillip Peyton, Texas nonetheless entered its final game with a chance to win the SWC championship for the first time since 1919. [ 40 ]
Louisiana [b] or French Louisiana [c] was an administrative district of New France.In 1682 the French explorer René-Robert Cavelier, Sieur de la Salle erected a cross near the mouth of the Mississippi River and claimed the whole of the drainage basin of the Mississippi River in the name of King Louis XIV, naming it "Louisiana".