A tsunami is a series of water waves caused by the displacement of a large volume of a body of water, usually an ocean, but can occur in large lakes.Owing to the immense volumes of water and the high energy involved, tsunamis can devastate coastal regions.
The principal sources of tsunami are:
Large submarine or coastal earthquakes, in which there is significant displacement of the seafloor or coast
Underwater landslides (which may be triggered by an earthquake or volcanic activity)
Large coastal cliff or lakeside landslides
Underwater volcanic eruptions
Anatomy of a Tsunami:
A tsunami wave in the open ocean can be more than 100 km across,That’s roughly the length of 1000 American football fields!
As the the tsunami wave reaches the coast it grows in height and slows. Tsunami wavesn may grow to be many meters high near thecoast and have a tremendous amount of energy.
The following picture explains how a tsunami works:
Apple CEO Steve Jobs today took a San Francisco stage to introduce his company's newest iPad.
The new iPad 2 -- the name wags had stuck on the new device, and the one Apple confirmed today -- is faster, thinner and lighter, said Jobs.
But it's not cheaper: Apple will retain the prices of 2010's iPad. The Wi-Fi versions start at $499 for a 16GB model and climb to $699 for a 64GB configuration, while the 3G iPads are priced at $629 to $829.
The iPad 2 will ship March 11 in the U.S., and on March 25 in at least 26 other countries, including Canada, France, Germany, Italy, Spain, Sweden and the U.K.
Jobs boasted of the iPad 2's new features and components, with the latter including a new dual-core processor -- an Apple-designed chip dubbed the A5 -- that he said doubled the speed of the tablet. Graphics processing, he added, is up to nine times faster.
As most pundits expected, the iPad 2 includes a pair of cameras, one facing the front of the device. The new tablet is 33% thinner, and tips the scales at 1.3 lbs., said Jobs. Source: http://www.computerworld.com