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.
Now the 9.70 barrier is in sight. Who is Usain Bolt? He is a quietly spoken, 6ft 5in student at Jamaica's University of Technology who has long been expected to reach the top in athletics, having run the outstanding 200 metres time of 19.93 sec as a 17-year-old.