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The atomic (covalent) radii of phosphorus, sulfur, and chlorine are about 1 angstrom, while that of hydrogen is about 0.5 angstroms. Visible light has wavelengths in the range of 4000–7000 Å. In the late 19th century, spectroscopists adopted 10 −10 of a metre as a convenient unit to express the wavelengths of characteristic spectral lines ...
As well, lumber is still measured in Costa Rica using a system based on 4 vara, or 11 feet, for both round and square wood. With square wood, using inches, the width is multiplied by the depth to get a measurement called pulgadas, or inches. The lumber is charged 'per inch', which is a measurement of 2.2 litres (11 ⁄ 12 board foot).
The United States retained the 1 / 39.37 -metre definition for surveying, producing a 2 millionth part difference between standard and US survey inches. [47] This is approximately 1 / 8 inch per mile; 12.7 kilometres is exactly 500,000 standard inches and exactly 499,999 survey inches.
An American Airlines flight out of New York was diverted to Rome on Sunday over a "possible security issue," the airline said in a statement. American Airlines flight 292, which departed from John ...
With the revival of urban rail transport, metre-gauge light metros were built in some cities. The slightly-wider 1,009 mm ( 3 ft 3 + 23 ⁄ 32 in ) gauge is used in Sofia, Bulgaria . Another similar gauge is 3 ft 6 in ( 1,067 mm ).
1/4 or 1 ⁄ 4 or ¼ may refer to: The calendar date January 4, in month-day format; The calendar date 1 April in day-month format; 1st Battalion, 4th Marines, an infantry battalion in the United States Marine Corps; A fraction of one fourth, one quarter, 25% or 0.25; 1/4 (single album), a single album by South Korean band Onewe
In Guatemala, a cuerda is a traditional unit of distance, equal to exactly 25 varas [1] or almost 21 meters (nearly 69 feet). During 19th-century Spain, a cuerda was a unit of length, of nearly 6.889 m (approx. 7.554 yd). [2] However, in Valencia, Spain, the cuerda measured 40 varas, over 5.4 times longer, as nearly 37.21 m (approx. 40.7 yd). [2]
By 2100, sea level rise of 0.9 m (3 ft) and 1.8 m (6 ft) would threaten 4.2 and 13.1 million people in the US, respectively. In California alone, 2 m (6 + 1 ⁄ 2 ft) of SLR could affect 600,000 people and threaten over US$150 billion in property with inundation. This potentially represents over 6% of the state's GDP.