Thus, cavitation is the name given to a mechanism in which vapor bubbles (or cavities) in a fluid grow and collapse due to local pressure fluctuations. These fluctuations can produce a low pressure, in the form of vapor pressure of the fluid.
Usain Bolt was born on August 21, 1986 in Montego Bay, Jamaica as Usain St. Leo Bolt.
Rio Olympics 2016: Usain Bolt wins 100m gold, Justin Gatlin second. Read more about sharing. Jamaica's Usain Bolt became the first athlete to win three Olympic 100m titles by beating American Justin Gatlin to gold at Rio 2016. Bolt, 29, ran 9.81 seconds in his final Olympics to replicate his success at Beijing 2008 and London 2012. Twice banned for doping offences, Gatlin was 0.08 seconds behind Bolt, with Canada's Andre de Grasse in third.