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Health effects of sunlight exposure. Exposing skin to the ultraviolet radiation in sunlight has both positive and negative health effects. On the positive side, exposure allows for the synthesis of vitamin D 3. Vitamin D has been suggested as having a wide range of positive health effects, which include strengthening bones [ 1] and possibly ...
American electoral politics have been dominated by successive pairs of major political parties since shortly after the founding of the republic of the United States. Since the 1850s, the two largest political parties have been the Democratic Party and the Republican Party—which together have won every United States presidential election since 1852 and controlled the United States Congress ...
Health threats from cosmic rays are the dangers posed by cosmic rays to astronauts on interplanetary missions or any missions that venture through the Van-Allen Belts or outside the Earth's magnetosphere. [ 1][ 2] They are one of the greatest barriers standing in the way of plans for interplanetary travel by crewed spacecraft, [ 3][ 4][ 5] but ...
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Angel Blowing a Woodwind, ink and opaque watercolor painting from Safavid Iran, c. 1500, Honolulu Academy of Arts.. The Quranic word for angel (Arabic: ملك, romanized: malak) derives either from Malaka, meaning "he controlled", due to their power to govern different affairs assigned to them, [18] or from the triliteral root '-l-k, l-'-k or m-l-k with the broad meaning of a "messenger", just ...
The arguments for moving to some form of motive utilitarianism at the personal level can be seen as mirroring the arguments for moving to some form of rule utilitarianism at the social level. [ 76 ] : 17 Adams (1976) refers to Sidgwick's observation that "Happiness (general as well as individual) is likely to be better attained if the extent to ...
The cognitive reflection test ( CRT) is a task designed to measure a person's tendency to override an incorrect "gut" response and engage in further reflection to find a correct answer; however, the validity of the assessment as a measure of "cognitive reflection" or "intuitive thinking" is under question. [ 1]
This 30 m (98 ft) diameter crater formed between July 2010 and May 2012 (19 November 2013; 3.7°N 53.4°E ). [ 1] In planetary geology, a ray system comprises radial streaks of fine ejecta thrown out during the formation of an impact crater, looking somewhat like many thin spokes coming from the hub of a wheel. The rays may extend for lengths ...