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.
Usain St. Leo Bolt, (/ËjuËseÉªn/ ; born 21 August 1986) is a Jamaican sprinter. Regarded as the fastest person ever, he is the first man to hold both the 100 metres and 200 metres world records since fully automatic time measurements became mandatory in 1977.Along with his teammates, he also set the world record in the 4Ã100 metres relay.n August 11, 2013, Bolt regained the title as world's fastest man by winning the World Championships 100m in Moscow, with a time of 9.77s (â0.3 m/s wind), ahead of Justin Gatlin in second with a time of 9.85s.