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  2. Orders of magnitude (length) - Wikipedia

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

    1.6 cm – length of a Jaragua Sphaero, a very small reptile; 1.7 cm – length of a Thorius arboreus, the smallest salamander [111] 2 cm – approximate width of an adult human finger; 2.54 cm – 1 inch; 3.08568 cm – 1 attoparsec; 3.4 cm – length of a quail egg [112] 3.5 cm – width of film commonly used in motion pictures and still ...

  3. List of battery sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_battery_sizes

    Flat round (one each end) H: 50 L: 25 W: 15 Used in older instruments. [246] the Regency TR-1 (first transistor radio), [247] and old battery–capacitor flashes. These are also sometimes known as B batteries, but are very distinct from actual B cell batteries. 30-volt: Eveready 413: 20F20 (Zn/MnO 2) 210: 140: 30 V (20 cells) Flat round (one ...

  4. Photo print sizes - Wikipedia

    en.wikipedia.org/wiki/Photo_print_sizes

    In the US, size names are often denoted with a code of the format nR, where the number n represents the length of the shorter edge in inches. In the normal series, the long edge is the length of the short edge plus 2 inches (10 in or less) or 3 inches (11 in and above).

  5. 16-inch/50-caliber Mark 7 gun - Wikipedia

    en.wikipedia.org/wiki/16-inch/50-caliber_Mark_7_gun

    A red stripe on the wall of each turret, inches from the railing, marked the limit of the gun's recoil as a safety warning to the turret's crew. [5] Complementing the 16-in/50 caliber Mark 7 gun was a fire control computer, the Ford Instrument Company Mark 8 Range Keeper. This analog computer was used to direct the fire from the battleship's ...

  6. Ferocactus gracilis - Wikipedia

    en.wikipedia.org/wiki/Ferocactus_gracilis

    It has deep green stems with 16 to 24 slightly tuberculated ribs. The areoles are light gray bearing 7 to 13 central spines that are red, flattened, and up to 7 cm (2.8 in) long, with a slightly curved to hook-shaped yellow tip. Additionally, there are eight to twelve white radial spines, occasionally twisted and around 6 cm (2.4 in) long.

  7. Six-red snooker - Wikipedia

    en.wikipedia.org/wiki/Six-red_snooker

    Six-red snooker (sometimes spelled six-reds, 6-red, and also known as super 6s), is a variant of snooker, but with only six red balls initially on the table as opposed to the standard fifteen. Overview

  8. Football (ball) - Wikipedia

    en.wikipedia.org/wiki/Football_(ball)

    Adidas Tricolore, the official ball for the 1998 World Cup. Law 2 of the game specifies that the ball is an air-filled sphere with a circumference of 68–70 cm (27–28 in), a weight of 410–450 g (14–16 oz), inflated to a pressure of 0.6 to 1.1 atmospheres (60–111 kPa or 8.7–16.1 psi) "at sea level", and covered in leather or "other suitable material". [7]

  9. Red - Wikipedia

    en.wikipedia.org/wiki/Red

    Red hair occurs naturally on approximately 1–2% of the human population. [36] It occurs more frequently (2–6%) in people of northern or western European ancestry, and less frequently in other populations. Red hair appears in people with two copies of a recessive gene on chromosome 16 which causes a mutation in the MC1R protein. [37]