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  2. Optical mark recognition - Wikipedia

    en.wikipedia.org/wiki/Optical_mark_recognition

    A response to an SAT math question marked on an optical answer sheet. An optical answer sheet or bubble sheet is a special type of form used in multiple choice question examinations. OMR is used to detect answers. The Scantron Corporation creates many optical answer sheets, although certain uses require their own customized system. [citation ...

  3. TerraNova (test) - Wikipedia

    en.wikipedia.org/wiki/TerraNova_(test)

    TerraNova is a series of standardized achievement tests used in the United States designed to assess K-12 student achievement in reading, language arts, mathematics, science, social studies, vocabulary, spelling, and other areas.

  4. Bubble point - Wikipedia

    en.wikipedia.org/wiki/Bubble_point

    In thermodynamics, the bubble point is the temperature (at a given pressure) where the first bubble of vapor is formed when heating a liquid consisting of two or more components. [ 1 ] [ 2 ] Given that vapor will probably have a different composition than the liquid, the bubble point (along with the dew point ) at different compositions are ...

  5. Maximum bubble pressure method - Wikipedia

    en.wikipedia.org/wiki/Maximum_bubble_pressure_method

    The pressure (P) inside of the gas bubble continues to increase and the maximum value is obtained when the bubble has the completely hemispherical shape whose radius is exactly corresponding to the radius of the capillary. [3] Figure 2 shows each step of bubble formation and corresponding change of bubble radius and each step is described below.

  6. Chaotic bubble - Wikipedia

    en.wikipedia.org/wiki/Chaotic_bubble

    A somewhat related field, the study of controlling such chaotic bubble dynamics (control of chaos), converts them to periodic oscillations, and has an important application to gas–solids in fluidized bed reactors, also applicable to the ammoxidation of propylene to acrylonitrile (Kaart, Schouten, and van den Bleek, 1999).

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  9. Soap bubble - Wikipedia

    en.wikipedia.org/wiki/Soap_bubble

    A soap bubble Girl blowing bubbles Many bubbles make foam. A soap bubble (commonly referred to as simply a bubble) is an extremely thin film of soap or detergent and water enclosing air that forms a hollow sphere with an iridescent surface. Soap bubbles usually last for only a few seconds before bursting, either on their own or on contact with ...