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  • ...o). In air it has been suggested that they are [[nearsighted]], although research has not supported this hypothesis (Sivak et al. 1987). The [[evolution]]ary history of penguins is extensively researched and represents a showcase of evolutionary [[biogeography]]; though as pen
    36 KB (5,129 words) - 19:41, 3 February 2019
  • ...ic radiation)|emit]] or [[reflection (physics)|reflect]] [[electromagnetic radiation]]. Although it cannot be observed directly, its presence can be inferred fr ...in far more matter than [[hadron|that which interacts with electromagnetic radiation]]: the remainder is called the "dark matter component."
    31 KB (4,644 words) - 00:11, 14 November 2017
  • ... will gradually radiate away its energy and cool down. This means that its radiation, which initially has a high [[color temperature]], will lessen and redden w ...en, Willem J. 1950. [http://adsabs.harvard.edu/abs/1950AJ.....55...86L The search for white dwarfs.] ''Astronomical Journal.'' 55(1183):86–89. Retrieve
    72 KB (10,834 words) - 17:14, 7 August 2013
  • ...organisms and not just simpler, [[microorganism|unicellular]] creatures. Research and theory in this regard is a component of [[planetary science]] and the e ... not unique among [[star]]s in hosting planets and expanded habitability research horizon beyond our own solar system.
    54 KB (8,189 words) - 20:58, 29 March 2019
  • ...58 and then by the [[Earl of Rosse]] in the 1840s.<ref>K. Glyn Jones, "The Search for the Nebulae." ''Journal of the History of Astronomy'' 7 (1976):67</ref> ...lation)|Andromeda]] Nebula" ([[Messier object]] [[Andromeda Galaxy|M31]]). Searching the photographic record, he found 11 more [[nova]]e. Curtis noticed that
    57 KB (8,513 words) - 15:18, 18 February 2019
  • ...Crab Pulsar]], a [[pulsar|rotating neutron star]], which emits pulses of [[radiation]] from [[gamma ray]]s to [[radio wave]]s with a spin rate of 30.2 times per The Crab Nebula acts as a source of radiation for studying celestial bodies that [[Occultation|occult]] it. In the 1950s
    23 KB (3,465 words) - 16:12, 9 December 2017
  • |known_for = [[Hawking radiation]]</br>''[[A Brief History of Time]]''</br> ...prediction that [[black hole]]s emit [[radiation]], often called [[Hawking radiation]]. Hawking was the first to set out a theory of [[cosmology]] explained by
    67 KB (9,603 words) - 21:15, 25 July 2018
  • ...frequencies, which are lower than those for visible light and [[infrared]] radiation, are broken up in smaller blocks for easier classification. Only small port Radio waves are classified as "non-ionizing radiation" because the energy of each individual [[photon]] of radio frequency is too
    35 KB (5,194 words) - 10:07, 17 June 2019
  • Since those earlier times, numerous searches involving various methods have been conducted to find these objects. Some ...nd Ben Zuckerman identified a faint companion to [[GD 165]] in an infrared search of [[white dwarf]]s. The spectrum of GD 165B was very red and enigmatic, sh
    26 KB (3,986 words) - 22:46, 6 July 2016
  • :Searching all directions * La Trobe University (n.d.), "Pali Canon Online Database," online search engine of Sri Lanka Tripitaka Project's (SLTP) Pali Canon. [http://www.chaf
    28 KB (4,094 words) - 16:00, 19 September 2018
  • ==History of research== ===Continuing research===
    51 KB (7,623 words) - 16:46, 6 July 2018
  • ...use it has no electric charge and does not interact with [[electromagnetic radiation]], such as light. ...wn composition; and (c) relic photons (the [[cosmic microwave background]] radiation) and neutrinos from the Big Bang. (While outnumbering both regular and dark
    26 KB (3,861 words) - 00:13, 14 November 2017
  • ...density (which laid the foundation for the [[photon]] theory), a theory of radiation including [[stimulated emission]], the conception of a [[classical unified ...uation, Einstein could not find a teaching post. After almost two years of searching, a former classmate's father helped him get a job in [[Bern]], at the Fe
    63 KB (9,035 words) - 22:51, 16 February 2019
  • ...simulated gravity]] (using steady circular rotation), entertainment, and [[radiation]] protection. Several of these factors are discussed below. ===Radiation protection===
    37 KB (5,526 words) - 15:56, 14 October 2015
  • ...nity. He continued to find support from the U.S. government and military research establishment. He was a co-founder of [[Lawrence Livermore National Laborat ...uclear physics.<ref>People Archive, [http://www.peoplesarchive.com/search/?searchterms=Placzek&storyId=4424 Interview with Edward Teller, part 40.] Retrieved
    40 KB (6,217 words) - 15:50, 21 September 2017
  • ...bitable zone" where the intensity of [[gamma ray]]s, [[x-ray]]s, and other radiation from surrounding stars is not too great to block the development of life by ...y]], most of which is radiated into space in the form of [[electromagnetic radiation]], including visible [[light]]. [[Jupiter]] and [[Saturn]], the two largest
    61 KB (9,526 words) - 22:17, 17 May 2018
  • ...on of snowpack. The most important factors are heating by solar radiation, radiational cooling, temperature gradients in snow, and snowfall amounts and type. Mo ...e the disturbance to the slope. Members should be aware of their duties to search.
    28 KB (4,333 words) - 14:51, 3 May 2016
  • During [[World War I]], with the need to detect [[submarine]]s, more research into the use of sound was undertaken. The British made early use of underwa In 1916, under the British Board of Invention and Research, Canadian physicist Robert Boyle took on the active sonar project with [[Al
    47 KB (7,317 words) - 15:34, 11 October 2015
  • ...y atmospheric [[gas]]es only to cause further [[emission]] of [[infrared]] radiation back to the earth, warming its surface. The major atmospheric gases causing [[Image:Solar Spectrum.png|thumb|350px|right|[[Solar radiation]] at top of atmosphere and at Earth's surface.]]
    24 KB (3,654 words) - 18:13, 22 October 2008
  • ...ent of PET technology and included the first demonstration of annihilation radiation for medical imaging.<ref>W.H. Sweet and G.L. Brownell, Localization of brai ...he active molecule becomes concentrated in tissues of interest; then the research subject or patient is placed in the imaging scanner. The molecule most comm
    26 KB (3,852 words) - 01:24, 14 June 2019

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