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  2. A Meteorologist Weighs in on the Science Behind 'Twisters'

    www.aol.com/meteorologist-weighs-science-behind...

    "In the original Twister, the idea of putting these Dorothy sensor balls into a tornado is completely science fiction, but it inspired a generation of people to want to do scientific research on ...

  3. Design of experiments - Wikipedia

    en.wikipedia.org/wiki/Design_of_experiments

    The same is true for intervening variables (a variable in between the supposed cause (X) and the effect (Y)), and anteceding variables (a variable prior to the supposed cause (X) that is the true cause). When a third variable is involved and has not been controlled for, the relation is said to be a zero order relationship. In most practical ...

  4. Analytical quality control - Wikipedia

    en.wikipedia.org/wiki/Analytical_quality_control

    AQC is achieved through laboratory control of analytical performance. Initial control of the complete system can be achieved through specification of laboratory services, instrumentation, glassware, reagents, solvents, and gases. However, evaluation of daily performance must be documented to ensure continual production of valid data.

  5. Tornado - Wikipedia

    en.wikipedia.org/wiki/Tornado

    A tornado with a nearly cylindrical profile and relatively low height is sometimes referred to as a "stovepipe" tornado. Large tornadoes which appear wider than their cloud-to-ground height can look like large wedges stuck into the ground, and so are known as "wedge tornadoes" or "wedges". [29]

  6. How those 'Twisters' tornadoes got to look so real — and scary

    www.aol.com/news/those-twisters-tornadoes-got...

    The film's director and effects team had one goal — to make their Oklahoma tornadoes look as real as possible. ... Since working on the original "Twister" in 1996, VFX supervisor Ben Snow has ...

  7. Conjugate variables (thermodynamics) - Wikipedia

    en.wikipedia.org/wiki/Conjugate_variables...

    The number of particles is, like volume and entropy, the displacement variable in a conjugate pair. The generalized force component of this pair is the chemical potential . The chemical potential may be thought of as a force which, when imbalanced, pushes an exchange of particles, either with the surroundings, or between phases inside the system.

  8. Latent and observable variables - Wikipedia

    en.wikipedia.org/.../Latent_and_observable_variables

    Other latent variables correspond to abstract concepts, like categories, behavioral or mental states, or data structures. The terms hypothetical variables or hypothetical constructs may be used in these situations. The use of latent variables can serve to reduce the dimensionality of data. Many observable variables can be aggregated in a model ...

  9. Twister game once too 'sexy' for Sears - AOL

    www.aol.com/news/2014-06-10-twister-game-once...

    Twister is one of the most recognizable games in the country -- we all have familiar memories of flicking the spinner and placing a foot or hand on whatever color the peg lands on. Apparently, the ...