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1. What unit of measurement does am represent?
Ammi (attometer or am) is a unit of length measurement, defined as 10 ^ (-18) meters, which is equivalent to an extremely small unit of length. AM has different meanings in different fields. In optics, AM stands for air mass, which is the ratio of the actual path length of light passing through the atmosphere to the vertical thickness of the atmosphere. This concept is commonly used to describe the path length changes that sunlight undergoes when entering the Earths atmosphere. In the case of AM0, this means that the light has not passed through the atmosphere, i.e. in a completely outer space environment. AM1 means that light passes vertically through the atmosphere, entering the atmosphere at a 90 degree angle to the horizon. In addition, AM is also used to represent time. In English, morning time is represented by AM, for example, 8:00 AM represents 8am. This term is widely used in meteorology, optics, and daily life, helping us better understand and describe the propagation of light in the atmosphere and the division of time.
2. Japanese professional vocabulary for photovoltaic industry
Photovoltaic power generation, cell photovoltaic cell, air mass, cell photovoltaic cell, module photovoltaic module, single crystal, polycrystalline, etc. Anti reflection coating, short circuit current, open circuit voltage, maximum power, conversion efficiency, solar photovoltaic system, photovoltaic panel, etc Photovoltaic array, support structure for photovoltaic panel, blocking device, grid connected operation, independent operation, reverse power flow, PID phenomenon (low output induced by voltage), reference state (normal condition), meter rate lighting ser
Eiffel Tower Named after its designer, engineer Gustave Eiffel, the Eiffel Tower is the tallest building in Paris.[1] More than 200,000,000 have visited the tower since its construction in 1889,[2] including 6,719,200 in 2006,[3] making it the most visited paid monument in the world.[4][5] Including the 24 m (79 ft) antenna, the structure is 325 m (1,063 ft) high (since 2000), which is equivalent to about 81 levels in a conventional building. When the tower was completed in 1889 it was the world"s tallest tower — a title it retained until 1930 when New York City"s Chrysler Building (319 m — 1,047 ft tall) was completed.[6] The tower is now the fifth-tallest structure in France and the tallest structure in Paris, with the second-tallest being the Tour Montparnasse (210 m — 689 ft), although that will soon be surpassed by Tour AXA (225.11 m — 738.36 ft). The metal structure of the Eiffel Tower weighs 7,300 tonnes while the entire structure including non-metal components is approximately 10,000 tonnes. Depending on the ambient temperature, the top of the tower may shift away from the sun by up to 18 cm (7 in) because of thermal expansion of the metal on the side facing the sun. The tower also sways 6–7 cm (2–3 in) in the wind.[3] As demonstration of the economy of design, if the 7300 tonnes of the metal structure were melted down it would fill the 125 meter square base to a depth of only 6 cm (2.36 in), assuming a density of the metal to be 7.8 tonnes per cubic meter. The tower has a mass less than the mass of the air contained in a cylinder of the same dimensions,[7] that is 324 meters high and 88.3 meters in radius. The weight of the tower is 10,100 t
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