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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. 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.

  4. Records of heads of state - Wikipedia

    en.wikipedia.org/wiki/Records_of_heads_of_state

    He ruled for 82 years and 254 days. However, the longest undisputed reigning ruler of a sovereign state is Louis XIV, who ruled the Kingdom of France for 72 years, 3 months, and 18 days. [1] [2] [3] The distinction of longest-ruling monarch whose exact dates of rule are unknown is disputed between the following candidates:

  5. 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)

  6. Golden angle - Wikipedia

    en.wikipedia.org/wiki/Golden_angle

    The golden angle is the angle subtended by the smaller (red) arc when two arcs that make up a circle are in the golden ratio. In geometry, the golden angle is the smaller of the two angles created by sectioning the circumference of a circle according to the golden ratio; that is, into two arcs such that the ratio of the length of the smaller arc to the length of the larger arc is the same as ...

  7. 35 mm movie film - Wikipedia

    en.wikipedia.org/wiki/35_mm_movie_film

    35 mm film is a film gauge used in filmmaking, and the film standard. [1] In motion pictures that record on film, 35 mm is the most commonly used gauge. The name of the gauge is not a direct measurement, and refers to the nominal width of the 35 mm format photographic film, which consists of strips 1.377 ± 0.001 inches (34.976 ± 0.025 mm) wide.

  8. 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 2.39:1. [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.

  9. 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.