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39°54′N 116°24′E / 39.900°N 116.400°E / 39.900; 116.400. Area (municipality) Total: 16,801 square kilometres (6,487 sq mi) Beijing is a municipality located in North China at the northern tip of the North China Plain, near the meeting point of the Xishan and Yanshan mountain ranges. The city itself lies on flat land ...
f-number. Diagram of decreasing apertures, that is, increasing f-numbers, in one-stop increments; each aperture has half the light-gathering area of the previous one. An f-number is a measure of the light-gathering ability of an optical system such as a camera lens. It is calculated by dividing the system's focal length by the diameter of the ...
In statistics, the 68–95–99.7 rule, also known as the empirical rule, and sometimes abbreviated 3sr, is a shorthand used to remember the percentage of values that lie within an interval estimate in a normal distribution: approximately 68%, 95%, and 99.7% of the values lie within one, two, and three standard deviations of the mean, respectively.
A Mediterranean climate (/ ˌmɛdɪtəˈreɪniən / MED-ih-tə-RAY-nee-ən), also called a dry summer climate, described by Köppen as Cs, is a temperate climate type that occurs in the lower mid-latitudes (normally 30 to 44 north and south latitude). Such climates typically have dry summers and wet winters, with summer conditions being hot and ...
In digital photography, the image sensor format is the shape and size of the image sensor. The image sensor format of a digital camera determines the angle of view of a particular lens when used with a particular sensor. Because the image sensors in many digital cameras are smaller than the 24 mm × 36 mm image area of full-frame 35 mm cameras ...
According to the 2022 revision of the World Population Prospects [2][3] the total population of Haiti in 2018 was 11,447,569, as compared to 3,221,000 in 1950. In 2015, the proportion of children below the age of 15 was 36.2%. 59.7% of the population was between 15 and 65 years of age, while 4.5% was 65 years or older. [4]
The 2.7-square-kilometre (1.0 sq mi) island is located in the Øygarden archipelago, north of the island of Toftøyna, east of Ono, and south of Blomøyna. The village of Rong covers the majority of the island. The island is connected to the island of Toftøyna via the Rongesundet Bridge, which crosses the Rongesundet strait and there is a ...
2.7% (2019) [1] The dong (Vietnamese: đồng) (/ dɒŋ /; Vietnamese: [ˀɗɜwŋ͡m˨˩]; sign: ₫ or informally đ in Vietnamese; [2] code: VND) has been the currency of Vietnam since 3 May 1978. [3][4] It is issued by the State Bank of Vietnam. [5] The dong was also the currency of the predecessor states of North Vietnam and South Vietnam ...