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In the history of artificial intelligence, an AI winter is a period of reduced funding and interest in artificial intelligence research. [1] The field has experienced several hype cycles , followed by disappointment and criticism, followed by funding cuts, followed by renewed interest years or even decades later.
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The conversion of sulfur dioxide to sulfuric acid, which condenses rapidly in the stratosphere to form fine sulfate aerosols. A volcanic winter is a reduction in global temperatures caused by droplets of sulfuric acid obscuring the Sun and raising Earth's albedo (increasing the reflection of solar radiation) after a large, sulfur-rich, particularly explosive volcanic eruption.
Winter is the coldest and darkest season of the year in temperate and polar climates. It occurs after autumn and before spring. The tilt of Earth's axis causes seasons; winter occurs when a hemisphere is oriented away from the Sun. Different cultures define different dates as the start of winter, and some use a definition based on weather.
A winter festival, winter carnival, snow festival, or frost fair is an outdoor cold weather celebration that occurs in wintertime. Winter festivals are popular in D climates (see Köppen climate classification ) where winter is particularly long or severe, such as Siberia , Scandinavia , Canada and the northern United States .
Józef Chełmoński: Partridges in the snow, 1891 Richard von Drasche-Wartinberg: In Deep Winter. The depiction of winter landscapes in Western art begins in the 15th century, as does landscape painting in general. Wintry and snowy landscapes are very rarely seen in earlier European painting since most of the subjects were religious.
Winter swimming is the activity of swimming during the winter season, typically in outdoor locations (open water swimming) or in unheated pools or lidos. In colder countries, it may be synonymous with ice swimming, when the water is frozen over. This requires either breaking the ice or entering where a spring prevents the formation of ice. It ...