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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. List of common display resolutions - Wikipedia

    en.wikipedia.org/wiki/List_of_common_display...

    Computer and handheld screens Designation Usage W (px) H Aspect ratio Total pixels Storage Display Pixel 0.26K1 Microvision: 16: ×: 16 1∶1: 1∶1: 1∶1: 256

  4. Aspect ratio (image) - Wikipedia

    en.wikipedia.org/wiki/Aspect_ratio_(image)

    Common aspect ratios used in film and display images. The common film aspect ratios used in cinemas are 1.85:1 and 2.40:1. [1] Two common videographic aspect ratios are 4:3 (1. 3:1), [a] the universal video format of the 20th century, and 16:9 (1. 7:1), universal for high-definition television and European digital television.

  5. Widescreen - Wikipedia

    en.wikipedia.org/wiki/Widescreen

    Masked (or flat) widescreen was introduced in April 1953.The negative is shot exposing the Academy ratio using spherical lenses, but the top and bottom of the picture are hidden or masked off by a metal aperture plate, cut to specifications of the theater's screen, in the projector.

  6. Orders of magnitude (length) - Wikipedia

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

    30 cm = 3 dm – typical school-use ruler length (= 300 mm) 30.48 cm = 3.048 dm – 1 foot (measure) 60 cm = 6 dm – standard depth (front to back) of a domestic kitchen worktop in Europe (= 600 mm) 90 cm = 9 dm – average length of a rapier, a fencing sword [30] 91.44 cm = 9.144 dm – one yard (measure)

  7. Diameter at breast height - Wikipedia

    en.wikipedia.org/wiki/Diameter_at_breast_height

    The height can make a substantial difference to the measured diameter. [3]In the United States, DBH is typically measured at 4.5 ft (1.37 m) above ground.

  8. GWR Iron Duke class - Wikipedia

    en.wikipedia.org/wiki/GWR_Iron_Duke_Class

    One of the first batch built, with an 18 ft 6 in (5.639 m) wheelbase. An emperor is a ruler of an empire. Lightning: 1847 1878 One of the first batch built, with an 18 ft 6 in (5.639 m) wheelbase. Lightning is a fast and powerful discharge of electrostatic energy from clouds. Pasha: 1847 1876

  9. Islam in India - Wikipedia

    en.wikipedia.org/wiki/Islam_in_India

    Conversions of convenience: administrators and clerks converted to preserve their employment by governments; slaves obtained protection, and sometimes even power, through conversion; sub-castes converted to gain a Muslim ruler's protection; in many service industries (e.g. butchery) conversion was socially convenient; non-Muslim men converted ...