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11 godz. temu · The flag was supposed to withstand wind speeds of 30 miles per hour (48 km/h), but it ripped apart three days later, when there was a wind speed of 16 mph (26 km/h). The flag had been stuck against the bridge's suspender cables, so any slight wind would have caused the cables to make tears in the flag. [137]
11 godz. temu · The metre (or meter in US spelling; symbol: m) is the base unit of length in the International System of Units (SI). Since 2019, the metre has been defined as the length of the path travelled by light in vacuum during a time interval of 1 / 299 792 458 of a second, where the second is defined by a hyperfine transition frequency of caesium.. The metre was originally defined in 1791 by the ...
11 godz. temu · Manhattan District The Trinity test of the Manhattan Project on 16 July 1945 was the first detonation of a nuclear weapon. Active 1942–1946 Disbanded 15 August 1947 Country United States United Kingdom Canada Branch U.S. Army Corps of Engineers Garrison/HQ Oak Ridge, Tennessee, U.S. Anniversaries 13 August 1942 Engagements Allied invasion of Italy Allied invasion of France Allied invasion of ...
