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  2. Academy ratio - Wikipedia

    en.wikipedia.org/wiki/Academy_ratio

    Academy ratio 1.375:1. The Academy ratio of 1.375:1 (abbreviated as 1.37:1) is an aspect ratio of a frame of 35 mm film when used with 4-perf pulldown. [1] [2] It was standardized by the Academy of Motion Picture Arts and Sciences as the standard film aspect ratio in 1932, although similar-sized ratios were used as early as 1928.

  3. 137 (number) - Wikipedia

    en.wikipedia.org/wiki/137_(number)

    137 is: . the 33rd prime number; the next is 139, with which it comprises a twin prime, and thus 137 is a Chen prime. [1]an Eisenstein prime with no imaginary part and a real part of the form .

  4. Earliest known life forms - Wikipedia

    en.wikipedia.org/wiki/Earliest_known_life_forms

    Evidence of possibly the oldest forms of life on Earth has been found in hydrothermal vent precipitates. [1]The earliest known life forms on Earth may be as old as 4.1 billion years (or Ga) according to biologically fractionated graphite inside a single zircon grain in the Jack Hills range of Australia. [2]

  5. Carbon monoxide - Wikipedia

    en.wikipedia.org/wiki/Carbon_monoxide

    It is the simplest carbon oxide. In coordination complexes, the carbon monoxide ligand is called carbonyl. It is a key ingredient in many processes in industrial chemistry. [5] The most common source of carbon monoxide is the partial combustion of carbon-containing compounds. Numerous environmental and biological sources generate carbon monoxide.

  6. Hydrophobicity scales - Wikipedia

    en.wikipedia.org/wiki/Hydrophobicity_scales

    Vapor phases represent the simplest non polar phases, because it has no interaction with the solute. [18] The hydration potential and its correlation to the appearance of amino acids on the surface of proteins was studied by Wolfenden. Aqueous and polymer phases were used in the development of a novel partitioning scale. [19]

  7. Helium - Wikipedia

    en.wikipedia.org/wiki/Helium

    Helium is the least water-soluble monatomic gas, [96] and one of the least water-soluble of any gas (CF 4, SF 6, and C 4 F 8 have lower mole fraction solubilities: 0.3802, 0.4394, and 0.2372 x 2 /10 −5, respectively, versus helium's 0.70797 x 2 /10 −5), [97] and helium's index of refraction is closer to unity than that of any other gas. [98]

  8. Effect size - Wikipedia

    en.wikipedia.org/wiki/Effect_size

    One of simplest effect sizes for measuring how much a proportion differs from 50% is Cohen's g. [ 10 ] : 147 It measures how much a proportion differs from 50%. For example, if 85.2% of arrests for car theft are males, then effect size of sex on arrest when measured with Cohen's g is g = 0.852 − 0.5 = 0.352 {\displaystyle g=0.852-0.5=0.352} .

  9. Pigouvian tax - Wikipedia

    en.wikipedia.org/wiki/Pigouvian_tax

    The simplest form of the net wage is the pre-tax wage minus the income tax. In reality, however, the net wage is the gross wage times one minus the tax rate, all divided by the price of consumption goods. With the status quo income tax, deadweight loss exists. Any addition to the price of consumption goods or an increase in the income tax ...