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  2. Repeating decimal - Wikipedia

    en.wikipedia.org/wiki/Repeating_decimal

    Conversely the period of the repeating decimal of a fraction ⁠ c / d ⁠ will be (at most) the smallest number n such that 10 n − 1 is divisible by d. For example, the fraction ⁠ 2 / 7 ⁠ has d = 7, and the smallest k that makes 10 k − 1 divisible by 7 is k = 6, because 999999 = 7 × 142857. The period of the fraction ⁠ 2 / 7 ⁠ is ...

  3. List of humorous units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_humorous_units_of...

    In the Zork series of games, the Great Underground Empire has its own system of measurements, the most frequently referenced of which is the bloit. Defined as the distance the king's favorite pet can run in one hour (spoofing a popular legend about the history of the foot), the length of the bloit varies dramatically, but the one canonical conversion to real-world units puts it at ...

  4. List of unusual units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_unusual_units_of...

    The measurement of time is unique in SI in that while the second is the base unit, and measurements of time smaller than a second use prefixed units smaller than a second (e.g. microsecond, nanosecond, etc.), measurements larger than a second instead use traditional divisions, including the sexagesimal-based minute and hour as well as the less ...

  5. Standard cubic centimetres per minute - Wikipedia

    en.wikipedia.org/wiki/Standard_cubic_centimetres...

    For some usage examples, consider the conversion of 1 SCCM to kg/s of a gas of molecular weight , where is in kg/kmol. Furthermore, consider standard conditions of 101325 Pa and 273.15 K, and assume the gas is an ideal gas (i.e., =).

  6. Cubic inch - Wikipedia

    en.wikipedia.org/wiki/Cubic_inch

    The cubic inch (symbol in 3) is a unit of volume in the Imperial units and United States customary units systems. It is the volume of a cube with each of its three dimensions (length, width, and height) being one inch long which is equivalent to 1/231 of a US gallon.

  7. Square kilometre - Wikipedia

    en.wikipedia.org/wiki/Square_kilometre

    A perfect rectangle with these measurements has an area of 1.30×0.75 = 0.9 km 2 Lucca (Italy) 43°50′38″N 10°30′2″E  /  43.84389°N 10.50056°E  / 43.84389; 10 The medieval city is roughly rectangular with rounded north-east and north-west corners.

  8. Viscosity - Wikipedia

    en.wikipedia.org/wiki/Viscosity

    Close temperature control of the fluid is essential to obtain accurate measurements, particularly in materials like lubricants, whose viscosity can double with a change of only 5 °C. A rheometer is used for fluids that cannot be defined by a single value of viscosity and therefore require more parameters to be set and measured than is the case ...

  9. Millionth - Wikipedia

    en.wikipedia.org/wiki/Millionth

    One millionth is equal to 0.000 001, or 1 x 10 −6 in scientific notation.It is the reciprocal of a million, and can be also written as 1 ⁄ 1,000,000. [1] Units using this fraction can be indicated using the prefix "micro-" from Greek, meaning "small". [2]