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  2. Atomic packing factor - Wikipedia

    en.wikipedia.org/wiki/Atomic_packing_factor

    Atomic packing factor. In crystallography, atomic packing factor (APF), packing efficiency, or packing fraction is the fraction of volume in a crystal structure that is occupied by constituent particles. It is a dimensionless quantity and always less than unity.

  3. Sodium fluoride - Wikipedia

    en.wikipedia.org/wiki/Sodium_fluoride

    Sodium fluoride ( NaF) is an inorganic compound with the formula Na F. It is a colorless or white solid that is readily soluble in water. It is used in trace amounts in the fluoridation of drinking water to prevent tooth decay, and in toothpastes and topical pharmaceuticals for the same purpose.

  4. Thickness-to-chord ratio - Wikipedia

    en.wikipedia.org/wiki/Thickness-to-chord_ratio

    Thickness-to-chord ratio. In aeronautics, the thickness-to-chord ratio, sometimes simply chord ratio or thickness ratio, compares the maximum vertical thickness of a wing to its chord. It is a key measure of the performance of a wing planform when it is operating at transonic speeds. At speeds approaching the speed of sound, the effects of ...

  5. Isotopes of copper - Wikipedia

    en.wikipedia.org/wiki/Isotopes_of_copper

    Copper ( 29 Cu) has two stable isotopes, 63 Cu and 65 Cu, along with 28 radioisotopes. The most stable radioisotope is 67 Cu with a half-life of 61.83 hours. Most of the others have half-lives under a minute. Unstable copper isotopes with atomic masses below 63 tend to undergo β + decay, while isotopes with atomic masses above 65 tend to ...

  6. Bhokar - Wikipedia

    en.wikipedia.org/wiki/Bhokar

    As of the 2011 census, Bhokar had a population of 32,899. The Municipal Council had a gender ratio of 924 females per 1,000 males. 12.4 percent of the population were under six years old. Effective literacy was 87.40 percent. 81.74 percent of women were literate. Male literacy was 92.68 percent. [2]

  7. Atmosphere of Earth - Wikipedia

    en.wikipedia.org/wiki/Atmosphere_of_Earth

    The atmosphere of Earth is the planetary atmosphere of Earth, composed of a layer of gas mixture that surrounds the Earth's planetary surface (both lands and oceans ), known collectively as air, with variable quantities of suspended aerosols and particulates (which create weather features such as clouds and hazes ), all retained by Earth's gravity. The atmosphere serves as a protective buffer ...

  8. Thousandth of an inch - Wikipedia

    en.wikipedia.org/wiki/Thousandth_of_an_inch

    A thousandth of an inch is a derived unit of length in a system of units using inches. Equal to of an inch, a thousandth is commonly called a thou / ˈθaʊ / (used for both singular and plural) or, particularly in North America, a mil (plural mils ).

  9. HSL and HSV - Wikipedia

    en.wikipedia.org/wiki/HSL_and_HSV

    HSL and HSV are the two most common cylindrical-coordinate representations of points in an RGB color model. The two representations rearrange the geometry of RGB in an attempt to be more intuitive and perceptually relevant than the cartesian (cube) representation. Developed in the 1970s for computer graphics applications, HSL and HSV are used today in color pickers, in image editing software ...