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  2. Milliradian - Wikipedia

    en.wikipedia.org/wiki/Milliradian

    In firearm optics, where 0.1 mrad per click is the most common mrad based adjustment value, another common rule of thumb is that an adjustment of ⁠ 1 / 10 ⁠ mrad changes the impact as many centimeters as there are hundreds of meters. In other words, 1 cm at 100 meters, 2.25 cm at 225 meters, 0.5 cm at 50 meters, etc. See the table below

  3. American wire gauge - Wikipedia

    en.wikipedia.org/wiki/American_wire_gauge

    The resistance of copper wire is approximately ⁠ 1 ohms / 1000 feet ⁠ for 10 AWG, ⁠ 10 ohms / 1000 feet ⁠ for 20 AWG, ⁠ 100 ohms / 1000 feet ⁠ for 30 AWG, and so on. [ 5 ] : 27 Because aluminum wire has a conductivity of approximately 61% of copper, an aluminum wire has nearly the same resistance as a copper wire that is two sizes ...

  4. 3 ft 6 in gauge railways - Wikipedia

    en.wikipedia.org/wiki/3_ft_6_in_gauge_railways

    In Japan the 1,067 mm (3 ft 6 in) gauge, along with other narrow gauges, is referred to as kyōki (狭軌), which directly translates as narrow gauge, to differentiate it from the Shinkansen lines. It is defined in metric units. It is commonly referred to as 三六軌間 (36 gauge), which derives from the 3 ft 6 in.

  5. Ring size - Wikipedia

    en.wikipedia.org/wiki/Ring_size

    In the United States, Canada, and Mexico, ring sizes are specified using a numerical scale with 1⁄4 steps, where whole sizes differ by 0.032 inches (0.81 mm) of internal diameter, equivalent to 0.1005 inches (2.55 mm) of internal circumference. The relationship of this size ( ) to ISO 8653:2016 circumference ( ) is , while the relationship to ...

  6. Gauge (firearms) - Wikipedia

    en.wikipedia.org/wiki/Gauge_(firearms)

    An n-gauge diameter means that a ball of lead (density 11.34 g/cm 3 or 0.4097 lb/in 3) with that diameter has a mass equal to ⁠ 1 / n ⁠ part of the mass of the international avoirdupois pound (approx. 454 grams), that is, that n such lead balls could be cast from a pound weight of lead.

  7. Metrication in the United States - Wikipedia

    en.wikipedia.org/wiki/Metrication_in_the_United...

    Display sizes for screens on TVs and computer monitors are advertised and sold in inches (measured diagonally), although most boxes also state the size in centimeters. The original 1 ⁄ 4 inch (6.35 mm) phone connector jack dates back to 1878 [53] [54] [55] and still sees use in audio equipment and electric instruments. In many respects, it ...

  8. Orders of magnitude (energy) - Wikipedia

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

    List of orders of magnitude for energy; Factor (joules) SI prefix Value Item 10 −34: 6.626 × 10 −34 J: Energy of a photon with a frequency of 1 hertz. [1]8 × 10 −34 J: Average kinetic energy of translational motion of a molecule at the lowest temperature reached (38 picokelvin [2] as of 2021)

  9. Orders of magnitude (length) - Wikipedia

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

    11 cm = 1.1 dm – length of an average potato in the US; 13 cm = 1.3 dm – body length of a Goliath birdeater; 15 cm = 1.5 dm – approximate size of largest beetle species; 19 cm = 1.9 dm – length of a banana; 26.3 cm = 2.6 dm – length of average male human foot; 29.98 cm = 2.998 dm – distance light in vacuum travels in one nanosecond