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Four Thirds logo. The Four Thirds System is a standard created by Olympus and Eastman Kodak for digital single-lens reflex camera (DSLR) design and development. [1] Four Thirds refers to both the size of the image sensor (4/3") as well as the aspect ratio (4:3).
The aspect ratio of 4:3. Fullscreen (or full screen) refers to the 4:3 (1. 33:1) aspect ratio of early standard television screens and computer monitors. [1] Widescreen ratios started to become more popular in the 1990s and 2000s.
The Egyptian equivalent of the foot—a measure of four palms or 16 digits—was known as the djeser and has been reconstructed as about 30 cm (11.8 in). The Greek foot ( πούς , pous ) had a length of 1 / 600 of a stadion , [ 12 ] one stadion being about 181.2 m (594 ft); [ 13 ] therefore a foot was, at the time, about 302 mm (11.9 in).
Brazil is the fifth largest country in the world, and third largest in the Americas, with a total area of 8,515,767.049 km 2 (3,287,956 sq mi), [176] including 55,455 km 2 (21,411 sq mi) of water. North to South, Brazil is also the longest country in the world, spanning 4,395 km (2,731 mi) from north to south, [ 13 ] and the only country in the ...
From the 1950s to the 1980s, the Soviet Union was the world's largest producer of hemp (3,000 square kilometres (1,200 sq mi) in 1970). The main production areas were in Ukraine , [ 126 ] the Kursk and Orel regions of Russia, and near the Polish border.
The 2010 Copiapó mining accident, also known as the "Chilean mining accident", began on 5 August 2010, with a cave-in at the San José copper–gold mine, located in the Atacama Desert, 45 kilometers (28 mi) north of the regional capital of Copiapó, in northern Chile. 33 men were trapped 700 meters (2,300 ft) underground and 5 kilometers (3 mi) from the mine's entrance and were rescued after ...