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The United States, which copied many French artillery practices, adopted angular mils, later known as NATO mils. Before 2007 the Swedish defence forces used "streck" (6300 in a circle, streck meaning lines or marks) (together with degrees for some navigation) which is closer to the milliradian but then changed to NATO mils.
Stadiametric rangefinding often uses the milliradian ("mil" or "mrad") as the unit of angular measurement. Since a radian is defined as the angle formed when the length of a circular arc equals the radius of the circle, a milliradian is the angle formed when the length of a circular arc equals 1/1000 of the radius of the circle.
At sea level one minute of arc along the equator equals exactly one geographical mile (not to be confused with international mile or statute mile) along the Earth's equator or approximately one nautical mile (1,852 metres; 1.151 miles). [14] A second of arc, one sixtieth of this amount, is roughly 30 metres (98 feet).
15.24 meters – width of an NBA basketball court (50 feet) 18.44 meters – distance between the front of the pitcher's rubber and the rear point of home plate on a baseball field (60 feet, 6 inches) [126] 20 meters – length of cricket pitch (22 yards) [127] 27.43 meters – distance between bases on a baseball field (90 feet)
Troublesome Creek in Hindman, Kentucky. Troublesome Creek is a creek in Breathitt, Perry and Knott counties, Kentucky, a fork of the North Fork Kentucky River. [1] It is 41.46 miles (66.72 km) long with a gradient of 8.92 feet per mile (168.9 cm/km), normally free-flowing, and with banks that vary between tree-lined and open.
The elevation near the mouth of Boile Run is 413 feet (126 m) above sea level. [6] The elevation of the stream's source is between 760 and 780 feet (232 and 238 m) above sea level. [1] Boile Run is a small stream. Its headwaters are 0.25 miles (0.40 km) west of Resler and its mouth is 0.5 miles (0.80 km) south of Fishers Ferry. [7]
The approximately 173-foot-high and 2,640-foot-long dam is located on the Mokelumne River which is about 10 miles downstream from Pardee Dam. Because Camanche Dam has a 627-square-mile drainage area which accounts for about 95 percent of the watershed, the dam and reservoir provide flood damage reduction on the Mokelumne River.
As the name suggests, an acre-foot is defined as the volume of one acre of surface area to a depth of one foot.. Since an acre is defined as a chain by a furlong (i.e. 66 ft × 660 ft or 20.12 m × 201.17 m), an acre-foot is 43,560 cubic feet (1,233.5 m 3).