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  2. Orders of magnitude (length) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(length)

    1.63 m – (5 feet 4 inches) (or 64 inches) – height of average U.S. female human as of 2002 (source: U.S. Centers for Disease Control and Prevention (CDC)) 1.75 m – (5 feet 8 inches) – height of average U.S. male human as of 2002 (source: U.S. CDC as per female above) 2.4 m – wingspan of a mute swan

  3. Six degrees of separation - Wikipedia

    en.wikipedia.org/wiki/Six_degrees_of_separation

    Since the Psychology Today article gave the experiments wide publicity, Milgram, Kochen, and Karinthy all had been incorrectly credited as the origin of the notion of six degrees; the most likely popularizer of the term "six degrees of separation" was John Guare, who attributed the concept of six degrees to Marconi. [11]

  4. Inch - Wikipedia

    en.wikipedia.org/wiki/Inch

    This was a point also made by George Long in his 1842 Penny Cyclopædia, observing that standard measures had since surpassed the barleycorn definition of the inch, and that to recover the inch measure from its original definition, in case the standard measure were destroyed, would involve the measurement of large numbers of barleycorns and ...

  5. Cup - Wikipedia

    en.wikipedia.org/wiki/Cup

    The Royal Gold Cup is an exceptionally rare survival, made before 1391 for John, Duke of Berry, a French prince, who gave it to his uncle, Charles VI of France. It is in gold, decorated with jewels and scenes in enamel, with a cover and a boiled leather carrying case. It once had a triangular stand which has been lost.

  6. Psychology - Wikipedia

    en.wikipedia.org/wiki/Psychology

    [14] This definition enjoyed widespread currency for decades. However, this meaning was contested, notably by John B. Watson, who in 1913 asserted the methodological behaviorist view of psychology as a purely objective experimental branch of natural science, the theoretical goal of which "is the prediction and control of behavior."

  7. Perception - Wikipedia

    en.wikipedia.org/wiki/Perception

    The oldest quantitative laws in psychology are Weber's law, which states that the smallest noticeable difference in stimulus intensity is proportional to the intensity of the reference; and Fechner's law, which quantifies the relationship between the intensity of the physical stimulus and its perceptual counterpart (e.g., testing how much ...

  8. Millimetre - Wikipedia

    en.wikipedia.org/wiki/Millimetre

    Different lengths as in respect to the electromagnetic spectrum, measured by the metre and its derived scales.The microwave is between 1 meter to 1 millimeter.. The millimetre (international spelling; SI unit symbol mm) or millimeter (American spelling) is a unit of length in the International System of Units (SI), equal to one thousandth of a metre, which is the SI base unit of length.

  9. Wisdom - Wikipedia

    en.wikipedia.org/wiki/Wisdom

    The field of psychology has also developed explicit theories and empirical research on the psychological processes underlying wisdom. [ 64 ] [ 11 ] Opinions on the psychological definition of wisdom vary, [ 11 ] but there is some consensus that critical to wisdom are certain meta-cognitive processes that afford life reflection and judgment ...