搜尋結果
Jean-Claude Camille François Van Varenberg ( French: [ʒɑ̃ klod kamij fʁɑ̃swa vɑ̃ vaʁɑ̃bɛʁɡ]; Dutch: [vɑn ˈvarə (n)ˈbɛrx]; born 18 October 1960), known professionally as Jean-Claude Van Damme ( French: [vɑ̃ dam]; Dutch: [vɑn ˈdɑmə] ), is a Belgian martial artist and actor. Born and raised in Brussels, his father ...
Ludwig van Beethoven [n 1] (baptised 17 December 1770 – 26 March 1827) was a German composer and pianist. He is one of the most revered figures in the history of Western music; his works rank among the most performed of the classical music repertoire and span the transition from the Classical period to the Romantic era in classical music.
- 17 December 1770
- 26 March 1827 (aged 56), Vienna
Vincent Willem van Gogh ( Dutch: [ˈvɪnsɛnt ˈʋɪləɱ‿vɑŋ‿ˈɣɔx] ⓘ; [note 1] 30 March 1853 – 29 July 1890) was a Dutch Post-Impressionist painter who is among the most famous and influential figures in the history of Western art.
- Discovery
- Research
- Inner Belt
- Outer Belt
- Flux Values
- Antimatter Confinement
- Implications For Space Travel
- Causes
- Proposed Removal
- See Also
Kristian Birkeland, Carl Størmer, Nicholas Christofilos, and Enrico Medi had investigated the possibility of trapped charged particles before the Space Age. The second Soviet satellite Sputnik 2 which had detectors designed by Sergei Vernov, followed by the US satellites Explorer 1 and Explorer 3, confirmed the existence of the belt in early 1958, ...
The NASA Van Allen Probes mission aims at understanding (to the point of predictability) how populations of relativistic electrons and ions in space form or change in response to changes in solar activity and the solar wind.NASA Institute for Advanced Concepts–funded studies have proposed magnetic scoops to collect antimatter that naturally occurs ...
The inner Van Allen Belt extends typically from an altitude of 0.2 to 2 Earth radii (L values of 1.2 to 3) or 1,000 km (620 mi) to 12,000 km (7,500 mi) above the Earth. In certain cases, when solar activity is stronger or in geographical areas such as the South Atlantic Anomaly, the inner boundary may decline to roughly 200 km above the Earth's sur...
The outer belt consists mainly of high-energy (0.1–10 MeV) electrons trapped by the Earth's magnetosphere. It is more variable than the inner belt, as it is more easily influenced by solar activity. It is almost toroidal in shape, beginning at an altitude of 3 Earth radii and extending to 10 Earth radii (RE)—13,000 to 60,000 kilometres (8,100 to 37...
In the belts, at a given point, the flux of particles of a given energy decreases sharply with energy. At the magnetic equator, electrons of energies exceeding 5000 keV (resp. 5 MeV) have omnidirectional fluxes ranging from 1.2×106 (resp. 3.7×104) up to 9.4×109 (resp. 2×107) particles per square centimeter per second. The proton belts contain proto...
In 2011, a study confirmed earlier speculation that the Van Allen belt could confine antiparticles. The Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics (PAMELA) experiment detected levels of antiprotons orders of magnitude higher than are expected from normal particle decays while passing through the South Atlantic Anomaly. ...
Spacecraft travelling beyond low Earth orbit enter the zone of radiation of the Van Allen belts. Beyond the belts, they face additional hazards from cosmic rays and solar particle events. A region between the inner and outer Van Allen belts lies at 2 to 4 Earth radii and is sometimes referred to as the "safe zone". Solar cells, integrated circuits,...
It is generally understood that the inner and outer Van Allen belts result from different processes. The inner belt is mainly composed of energetic protons produced from the decay of so-called "albedo" neutrons, which are themselves the result of cosmic ray collisions in the upper atmosphere. The outer Van Allen belt consists mainly of electrons. T...
Draining the charged particles from the Van Allen belts would open up new orbits for satellites and make travel safer for astronauts. High Voltage Orbiting Long Tether, or HiVOLT, is a concept proposed by Russian physicist V. V. Danilov and further refined by Robert P. Hoyt and Robert L. Forward for draining and removing the radiation fields of the...
Van Halen ( / væn ˈheɪlɛn / van HAY-len) was an American rock band formed in Pasadena, California, in 1973. Credited with restoring hard rock to the forefront of the music scene, [2] Van Halen was known for their energetic live performances [3] and for the virtuosity of its guitarist, Eddie Van Halen. [4] [5] The band was inducted into the ...
Hailey Van Lith (born September 9, 2001) is an American college basketball player for the TCU Horned Frogs. She previously played for the Louisville Cardinals and the LSU Tigers.At Cashmere High School in Cashmere, Washington, Van Lith was rated as one of the top recruits in her class, named a McDonald's All-American and left as the all-time leading scorer in state history.
Steven Van Zandt (né Lento; born November 22, 1950), also known as Little Steven or Miami Steve, is an American musician and actor. He is a member of Bruce Springsteen 's E Street Band, in which he plays guitar and mandolin. He has appeared in several television drama series, including as Silvio Dante in The Sopranos (1999–2007) and as Frank ...
