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  2. Percentage point - Wikipedia

    en.wikipedia.org/wiki/Percentage_point

    A percentage point or percent point is the unit for the arithmetic difference between two percentages.For example, moving up from 40 percent to 44 percent is an increase of 4 percentage points (although it is a 10-percent increase in the quantity being measured, if the total amount remains the same). [1]

  3. 35 mm equivalent focal length - Wikipedia

    en.wikipedia.org/wiki/35_mm_equivalent_focal_length

    35 mm equivalent focal lengths are calculated by multiplying the actual focal length of the lens by the crop factor of the sensor. Typical crop factors are 1.26× – 1.29× for Canon (1.35× for Sigma "H") APS-H format, 1.5× for Nikon APS-C ("DX") format (also used by Sony, Pentax, Fuji, Samsung and others), 1.6× for Canon APS-C format, 2× for Micro Four Thirds format, 2.7× for 1-inch ...

  4. 0% finance - Wikipedia

    en.wikipedia.org/wiki/0%_finance

    The financial mathematics behind the 0% finance scheme is somewhat complex, as the calculation differs with respect to the type of product and the country. [1] These deals are offered by finance companies or banks in conjunction with a manufacturer or dealer network. The schemes offer "zero percent" finance, where a customer pays for the ...

  5. Half-frame camera - Wikipedia

    en.wikipedia.org/wiki/Half-frame_camera

    It is closer to the normal frame size of a 35 mm motion film. This leaves half frame cameras to derive their film plate size from the aspect ratio, and frame size that was first designated by Thomas Edison (24.89 by 18.67 millimetres or 0.980 by 0.735 inches) at the dawn of the motion picture industry. [1]

  6. 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.

  7. 68–95–99.7 rule - Wikipedia

    en.wikipedia.org/wiki/68–95–99.7_rule

    For example, Φ(2) ≈ 0.9772, or Pr(X ≤ μ + 2σ) ≈ 0.9772, corresponding to a prediction interval of (1 − (1 − 0.97725)·2) = 0.9545 = 95.45%. This is not a symmetrical interval – this is merely the probability that an observation is less than μ + 2 σ .

  8. Lost (TV series) - Wikipedia

    en.wikipedia.org/wiki/Lost_(TV_series)

    This is an accepted version of this page This is the latest accepted revision, reviewed on 22 February 2025. American television series (2004–2010) For the 2021 South Korean drama series, see Lost (South Korean TV series). For the American reality series, see Lost (2001 TV series). Lost Genre Adventure Hybrid Mystery Science fiction Serial drama Supernatural Survival Thriller Created by ...

  9. Sunglasses - Wikipedia

    en.wikipedia.org/wiki/Sunglasses

    The ANSI Z87.1-2003 standard includes requirements for basic impact and high impact protection. In the basic impact test, a 1 in (2.54 cm) steel ball is dropped on the lens from a height of 50 in (127 cm). In the high velocity test, a 1/4 in (6.35 mm) steel ball is shot at the lens at 150 ft/s (45.72 m/s).

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