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, OJ, CD (/ËjuËseÉªn/; born 21 August 1986), is a Jamaican sprinter. Regarded as the fastest person ever timed, he is the first man to hold both the 100 metres and 200 metres world records since fully automatic time became mandatory. He also holds the world record in the 4 Ã 100 metres relay. He is the reigning World and Olympic champion in these three events.