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  2. Ball lightning - Wikipedia

    en.wikipedia.org/wiki/Ball_lightning

    Ball lightning is a possible source of legends that describe luminous balls, such as the mythological Anchimayen from Argentinean and Chilean Mapuche culture.. According to a statistical investigation carried out in 1960, of 1,962 Oak Ridge National Laboratory monthly role personnel, and of all 15,923 Union Carbide Nuclear Company personnel in Oak Ridge, found 5.6% and 3.1% respectively ...

  3. List of lightning phenomena - Wikipedia

    en.wikipedia.org/wiki/List_of_lightning_phenomena

    It is sometimes associated with thunderstorms, but unlike lightning flashes, which last only a fraction of a second, ball lightning reportedly lasts many seconds. Ball lightning has been described by eyewitnesses but rarely recorded by meteorologists. [3] [4] Scientific data on natural ball lightning is scarce owing to its infrequency and ...

  4. Soliton - Wikipedia

    en.wikipedia.org/wiki/Soliton

    Solitary wave in a laboratory wave channel. In mathematics and physics, a soliton is a nonlinear, self-reinforcing, localized wave packet that is strongly stable, in that it preserves its shape while propagating freely, at constant velocity, and recovers it even after collisions with other such localized wave packets.

  5. Lightning sphere - Wikipedia

    en.wikipedia.org/wiki/Lightning_sphere

    Lightning sphere may refer to: Ball lightning , a controversial atmospheric electrical phenomenon Plasma globe , a decorative electrical device using high voltage discharge within a transparent enclosure containing an inert gas

  6. Earthquake light - Wikipedia

    en.wikipedia.org/wiki/Earthquake_light

    Instances of this phenomenon appear in videos [18] taken seconds after a 7.1 magnitude earthquake in the city of Acapulco, Mexico, around 20:47 on 7 September 2021. The New York Times reported that "Videos from both Acapulco and Mexico City also showed the night sky lit up with electrical flashes as power lines swayed and buckled." [19]

  7. Rate (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Rate_(mathematics)

    In mathematics, a rate is the quotient of two quantities, often represented as a fraction. [1] If the divisor (or fraction denominator) in the rate is equal to one expressed as a single unit, and if it is assumed that this quantity can be changed systematically (i.e., is an independent variable), then the dividend (the fraction numerator) of the rate expresses the corresponding rate of change ...

  8. Light ball - Wikipedia

    en.wikipedia.org/wiki/Light_ball

    Light ball may refer to: Ball lightning; Flare This page was last edited on 29 December 2019, at 06:01 (UTC). Text is available under the Creative Commons ...

  9. Recreational mathematics - Wikipedia

    en.wikipedia.org/wiki/Recreational_mathematics

    Some of the more well-known topics in recreational mathematics are Rubik's Cubes, magic squares, fractals, logic puzzles and mathematical chess problems, but this area of mathematics includes the aesthetics and culture of mathematics, peculiar or amusing stories and coincidences about mathematics, and the personal lives of mathematicians.