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  2. List of natural phenomena - Wikipedia

    en.wikipedia.org/wiki/List_of_natural_phenomena

    A natural phenomenon is an observable event which is not man-made. Examples include: sunrise, weather, fog, thunder, tornadoes; biological processes, decomposition, germination; physical processes, wave propagation, erosion; tidal flow, and natural disasters such as electromagnetic pulses, volcanic eruptions, hurricanes and earthquakes. [1] [2]

  3. Phenomenon - Wikipedia

    en.wikipedia.org/wiki/Phenomenon

    Example of a physical phenomenon is an observable phenomenon of the lunar orbit or the phenomenon of oscillations of a pendulum. [4] A mechanical phenomenon is a physical phenomenon associated with the equilibrium or motion of objects. [5] Some examples are Newton's cradle, engines, and double pendulums.

  4. Schwa deletion in Indo-Aryan languages - Wikipedia

    en.wikipedia.org/wiki/Schwa_deletion_in_Indo...

    That phenomenon has been termed the "schwa syncope rule" or the "schwa deletion rule" of Hindi. [ 1 ] [ 3 ] One formalisation of this rule has been summarised as ə → ∅ /VC_CV . In other words, when a schwa-succeeded consonant (itself preceded by another vowel) is followed by a vowel-succeeded consonant, the schwa inherent in the first ...

  5. Optical phenomenon - Wikipedia

    en.wikipedia.org/wiki/Optical_phenomenon

    Optical phenomena are any observable events that result from the interaction of light and matter. All optical phenomena coincide with quantum phenomena. [ 1 ] Common optical phenomena are often due to the interaction of light from the Sun or Moon with the atmosphere, clouds, water, dust, and other particulates.

  6. Pareidolia - Wikipedia

    en.wikipedia.org/wiki/Pareidolia

    Satellite photograph of a mesa in the Cydonia region of Mars, often called the "Face on Mars" and cited as evidence of extraterrestrial habitation. Pareidolia (/ ˌ p ær ɪ ˈ d oʊ l i ə, ˌ p ɛər-/; [1] also US: / ˌ p ɛər aɪ-/) [2] is the tendency for perception to impose a meaningful interpretation on a nebulous stimulus, usually visual, so that one detects an object, pattern, or ...

  7. Nature - Wikipedia

    en.wikipedia.org/wiki/Nature

    A timelapse composite panorama of different natural phenomena and environments around Mount Bromo, Indonesia. Nature is an inherent character or constitution, [1] particularly of the ecosphere or the universe as a whole. In this general sense nature refers to the laws, elements and phenomena of the physical world, including life.

  8. Astronomy - Wikipedia

    en.wikipedia.org/wiki/Astronomy

    The Maunder minimum, for example, is believed to have caused the Little Ice Age phenomenon during the Middle Ages. [108] At the center of the Sun is the core region, a volume of sufficient temperature and pressure for nuclear fusion to occur. Above the core is the radiation zone, where the plasma conveys the energy flux by means of radiation.

  9. Extreme weather - Wikipedia

    en.wikipedia.org/wiki/Extreme_weather

    A cold wave is a weather phenomenon that is distinguished by a cooling of the air. Specifically, as used by the U.S. National Weather Service , a cold wave is a rapid fall in temperature within a 24-hour period requiring substantially increased protection for agriculture, industry, commerce, and social activities.