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One barn is equal to 1.0 × 10 −28 m 2. The name derives from the folk expressions "As big as a barn," and "Couldn't hit the broad side of a barn", used by particle accelerator physicists to refer to the probability of achieving a collision between particles. For nuclear purposes, 1.0 × 10 −28 m 2 is actually rather large. [25]
The decimetre (SI symbol: dm) is a unit of length in the metric system equal to 10 −1 metres ( 1 / 10 m = 0.1 m). To help compare different orders of magnitude , this section lists lengths between 10 centimeters and 100 centimeters (10 −1 meter and 1 meter).
James Ray Hines (September 10, 1946 – June 3, 2023) was an American track and field athlete and National Football League (NFL) player, who held the 100-meter world record for 15 years. In 1968, he became the first man to officially break the 10-second barrier in the 100 meters, and won individual and relay gold at the Mexico City Olympics. [2]
First structure to exceed 300 metres in height. The addition of a telecommunications tower in the 1950s brought the overall height to 330 m (1,080 ft). 1930 1 Chrysler Building in New York, United States 1928–1930 319 1,046
The basic unit of length in the imperial and U.S. customary systems is the yard, defined as exactly 0.9144 m by international treaty in 1959. [2] [10] Common imperial units and U.S. customary units of length include: [11] thou or mil (1 ⁄ 1000 of an inch) inch (25.4 mm) foot (12 inches, 0.3048 m) yard (3 feet, 0.9144 m)
[25] [26] The standard FIFA football pitch for international matches is 105 m (344 ft) long by 68 m (223 ft) wide (7,140 m 2 or 0.714 ha or 1.76 acres); FIFA allows for a variance of up to 5 m (16.4 ft) in length in either direction and 7 m (23.0 ft) more or 4 m (13.1 ft) less in width (and larger departures if the pitch is not used for ...
In platform diving, the diver jumps from a high stationary surface. The height of the platforms – 10 metres (33 ft), 7.5 metres (25 ft) and 5 metres (16 ft) – gives the diver enough time to perform the acrobatic movements of a particular dive. There are additional platforms set at 3 metres (9.8 ft) and 1 metre (3.3 ft).
|height=1.57 metres (5 feet 5 inches) → 1.57 m (5 ft 5 in) |height=157 centimetres (5 feet 5 inches) → 157 cm (5 ft 5 in) Does not replace numeric output of conversion templates such as {{ convert }} or {{ height }} , but does replace unit names with abbreviations (examples intentionally show different precision than usual):