sony ericsson W580i

Size 99.0 x 47.0 x 14.0 mm
3.9 x 1.9 x 0.6 inches
Weight 94.0 gr
3.3 oz
Screen 262.144 color TFT
240x320 pixel
Available colors Style White
Urban Grey
Metro Pink
Memory 12 MB* memory
Memory Stick Micro™ (M2™) support (up to 2 GB)



Camera

Capture and share special moments.

Digital zoom - up to 4x

Get close to your subject.

Send to web

Catch moments with your camera and send straight to your personal web site or blog.

Video recording

Capture the action as it happens.



Bluetooth™ stereo (A2DP)

Music from phone to headset over a wireless connection.

Mega Bass™

Enhance bass frequencies and give your music more body.

Shake control

Supports music tones

A robot is a virtual or mechanical artificial agent. In practice, it is usually an electro-mechanical machine which is guided by computer or electronic programming, and is thus able to do tasks on its own. Another common characteristic is that by its appearance or movements, a robot often conveys a sense that it has intent or agency of its own.

hile there is no single correct definition of "robot,"[10] a typical robot will have several, or possibly all, of the following characteristics.

It is an electric machine which has some ability to interact with physical objects and to be given electronic programming to do a specific task or to do a whole range of tasks or actions. It may also have some ability to perceive and absorb data on physical objects, or on its local physical environment, or to process data, or to respond to various stimuli. This is in contrast to a simple mechanical device such as a gear or a hydraulic press or any other item which has no processing ability and which does tasks through purely mechanical processes and motion.

tsunami

A tsunami (pronounced sue-nahm-ee) is a series of huge waves that can cause great devastation and loss of life when they strike a coast.
Tsunamis are caused by an underwater earthquake, a volcanic eruption, an sub-marine rockslide, or, more rarely, by an asteroid or meteoroid crashing into in the water from space. Most tsunamis are caused by underwater earthquakes, but not all underwater earthquakes cause tsunamis - an earthquake has to be over about magnitude 6.75 on the Richter scale for it to cause a tsunami. About 90 percent of all tsunamis occur in the Pacific Ocean.

Many tsunamis could be detected before they hit land, and the loss of life could be minimized, with the use of modern technology, including seismographs (which detect earthquakes), computerized offshore buoys that can measure changes in wave height, and a system of sirens on the beach to alert people of potential tsunami danger

eefect of greenhouse

The greenhouse effect

When sunlight reaches Earth's surface some is absorbed and warms the earth and most of the rest is radiated back to the atmosphere at a longer wavelength than the sun light. Some of these longer wavelengths are absorbed by greenhouse gases in the atmosphere before they are lost to space. The absorption of this longwave radiant energy warms the atmosphere. These greenhouse gases act like a mirror and reflect back to the Earth some of the heat energy which would otherwise be lost to space. The reflecting back of heat energy by the atmosphere is called the "greenhouse effect".

The major natural greenhouse gases are water vapor, which causes about 36-70% of the greenhouse effect on Earth (not including clouds); carbon dioxide CO₂, which causes 9-26%; methane, which causes 4-9%, and ozone, which causes 3-7%. It is not possible to state that a certain gas causes a certain percentage of the greenhouse effect, because the influences of the various gases are not additive. Other greenhouse gases include, but are not limited to, nitrous oxide, sulfur hexafluoride, hydrofluorocarbons, perfluorocarbons and chlorofluorocarbons.

Global warming causes by greenhouse effect

Greenhouse gases in the atmosphere (see above) act like a mirror and reflect back to the Earth a part of the heat radiation, which would otherwise be lost to space. The higher the concentration of green house gases like carbon dioxide in the atmosphere, the more heat energy is being reflected back to the Earth. The emission of carbon dioxide into the environment mainly from burning of fossil fuels (oil, gas, petrol, kerosene, etc.) has been increased dramatically over the past 50 years, see graph below.

F:\httptimeforchange.orgcause-and-effect-for-global-warming.htm

The US Space Shuttle was the world's first reusable spacecraft. It was first conceived during the years of the Apollo lunar program and was intended to service space stations, lower the costs of space travel and make access to the moon and beyond more routine. After numerous delays, the first of five orbiters, Columbia, lifted off on 12 April 1981.

The shuttle is comprised of three components: the orbiter (the aeroplane-like crew- and cargo-carrying craft that most people think of as the shuttle); a large external tank (ET) that holds the liquid oxygen and liquid hydrogen fuel; and two solid rocket boosters (SRBs) packed with powdered aluminium and rubber fuel. The SRBs provide 6 million pounds of thrust at takeoff, before being jettisoned to parachute into the ocean, where they are recovered for re-use. The ET is jettisoned soon after, and burns up during atmospheric re-entry.

For many people, the shuttle's recent missions, which were focused mainly on assembly of the International Space Station (ISS), had become routine. Ironically, the first mission in years that had much scientific research aboard was STS-107, the final, tragic flight of Columbia.

Lift-off to disaster

Columbia's last flight began on 16 January 2003, and though no one knew it at the time, the orbiter sustained fatal damage just seconds after lift-off. According to the Columbia Accident Investigation Board (CAIB), a suitcase-sized chunk of foam came loose from the ET, punching a hole in insulating tiles on the craft's wing. During re-entry, 16 days later, super-hot atmospheric gases penetrated the wing, causing it to shear off. The orbiter then disintegrated, with the loss of all seven astronauts on board.

It remains unclear whether anything could have been done to save the crew if the wing damage had been known about. One possibility would have been to send a second orbiter to rendezvous with the crew in orbit, leaving Columbia to be jettisoned into the ocean.

The CAIB recommended that NASA should develop the capability to inspect the craft for damage in orbit (using radar, cameras or sensors for example); eliminate the chronic shedding of foam debris during launch and develop a method for repairing the tiles in orbit, to permit a safe return. Other modifications may also improve safety.

Safety issues

While the shuttle was initially introduced as a replacement for virtually all US expendable launch vehicles, and was touted for its cost-effectiveness, its functions were scaled back considerably after the first shuttle tragedy.

That was the fiery explosion of Challenger on 29 January 1986, just 73 seconds after lift-off. That accident also took the lives of all seven astronauts aboard. The accident was traced to a rubber O-ring used to seal the SRB seams. The faulty ring, made brittle by unusually cold weather at launch, allowed a jet of flame to ignite the hydrogen fuel in the external tank.

The investigations into both accidents revealed a variety of further serious safety issues, and other concerns have caused delays in the program.

These include: concerns about tiny cracks found in fuel lines (which grounded the shuttle fleet during the year before Columbia's last flight), other leaks, faulty sensors and hinges, and problems with explosive bolts that separate the booster rockets from the orbiter.

Record breakers

During their nearly quarter-century of service, the five shuttles (Columbia, Challenger, Discovery, Atlantis, and Challenger's replacement Endeavour) have accomplished numerous important research missions and established many records in space travel.

The re-usable shuttles were the first (and still the only) spacecraft to reach orbit more than once. It is the only space vehicle from which astronauts have captured a satellite in orbit to be repaired in place, or brought back to Earth for repair and re-launch. It is also the only vehicle from which astronauts have ever made untethered space walks.

The shuttle delivered the Hubble Space Telescope to orbit in 1990, and then returned to service it (initially, to correct a faulty mirror and later to install new gyroscopes, cameras and spectroscopes) in 1993, 1997, 1999 and finally 2002.

The shuttles also launched the highly successful Galileo orbiter to Jupiter; the Magellan mission to Venus in 1989; the European Space Agency's Ulysses solar observatory in 1990; the Gamma Ray Observatory; and the Chandra X-Ray telescope.

Space science

Some shuttle missions were dedicated specifically to research, often using the SpaceLab module in the shuttle's huge payload bay. Experiments included studies of the microgravity environment, such as growing protein crystals, and studying the basic properties of flames and liquids. Some focused on the growth, reproduction and other properties of microbes, plants and animals in space.

Other missions analysed the effects of space travel on people. Examples include studies of bone loss, heart function and motion sickness.

There were also missions dedicated to astronomical observations, using the Astro payload of pallet-mounted telescopes. Further missions studied the Earth from above, such as one that used of a type of radar to probe below the surface - discovering ancient riverbeds beneath the Sahara Desert, for example.

http://www.newscientist.com/article/dn9937-instant-expert-return-of-the-space-shuttle.html