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  2. Effectiveness - Wikipedia

    en.wikipedia.org/wiki/Effectiveness

    However, neither "effectiveness", nor "effectively", inform about the direction (positive or negative) or gives a comparison to a standard of the given effect. Efficacy, on the other hand, is the extent to which a desired effect is achieved; the ability to produce a desired amount of the desired effect, or the success in achieving a given goal.

  3. Quantum channel - Wikipedia

    en.wikipedia.org/wiki/Quantum_channel

    In other words, a quantum channel is ... must preserve the cone of positive elements. In other words, ... A purely quantum channel, in the Heisenberg picture, is a ...

  4. Positivism - Wikipedia

    en.wikipedia.org/wiki/Positivism

    Positivism is a philosophical school that holds that all genuine knowledge is either true by definition or positive – meaning a posteriori facts derived by reason and logic from sensory experience. [ 1 ] [ 2 ] Other ways of knowing , such as intuition , introspection , or religious faith , are rejected or considered meaningless .

  5. Glossary of chemistry terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_chemistry_terms

    Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...

  6. Rationality - Wikipedia

    en.wikipedia.org/wiki/Rationality

    Positive coherence refers to the support that different mental states provide for each other. For example, there is positive coherence between the belief that there are eight planets in the solar system and the belief that there are less than ten planets in the solar system: the earlier belief implies the latter belief.

  7. Happiness - Wikipedia

    en.wikipedia.org/wiki/Happiness

    The Positive and Negative Affect Schedule (PANAS) from 1988 is a 20-item questionnaire, using a five-point Likert scale (1 = very slightly or not at all, 5 = extremely) to assess the relation between personality traits and positive or negative affects at "this moment, today, the past few days, the past week, the past few weeks, the past year ...

  8. Maximum power transfer theorem - Wikipedia

    en.wikipedia.org/wiki/Maximum_power_transfer_theorem

    Simplified model for powering a load with resistance R L by a source with voltage V S and resistance R S.. The theorem was originally misunderstood (notably by Joule [4]) to imply that a system consisting of an electric motor driven by a battery could not be more than 50% efficient, since the power dissipated as heat in the battery would always be equal to the power delivered to the motor when ...

  9. Positive - Wikipedia

    en.wikipedia.org/wiki/Positive

    Positive charge, one of the two types of electrical charge; Positive (electrical polarity), in electrical circuits; Positive lens, in optics; Positive (photography), a positive image, in which the color and luminance correlates directly with that in the depicted scene; Positive sense, said of an RNA sequence that codes for a protein