Tuesday, July 29, 2008

Entertainment

Entertainment is an occasion, piece, or movement designed to give enjoyment or leisure to an audience. The audience may join in the entertainment passively as in actively as in computer games. The playing of sports and reading of journalism are usually included in entertainment, but these are regularly called activity more specifically, because they involve some energetic participation past mere leisure.

While people have laughing themselves since the beginning of time, the entertainment industry first became a leading force in culture in the 20th century with the development of latest electronic technologies of recording and spreading. Western peoples, tired of serious purposes and gathering massacre, turned to popular culture following the two world wars. The financial basis of this new culture was advertising of free or inexpensive entertainment program. In their peak, television networks were great selling machines which, besides entertaining people, prohibited both commercial and political markets by providing direct access to the group of customers. This "territory" is now in danger by the explosion and segmentation of media and especially by the growing importance of communication by computer which allows the consumer to look for out the informational message as an alternative of having it broadcast to him or her. A new system of world history sees Americans in changeover between a fourth, entertainment-based "society" and a future fifth evolution based on computer communication.

Tuesday, May 27, 2008

Mars Cold Goes Down Deep


New observations from NASA's Mars Reconnaissance Orbiter indicate that the crust and upper mantle of Mars are stiffer and colder than previously thought.The findings suggest any liquid water that might exist below the planet's surface and any possible organisms living in that water, would be located deeper than scientists had suspected."We found that the rocky surface of Mars is not bending under the load of the north polar ice cap," said Roger Phillips of the Southwest Research Institute in Boulder, Colo. Phillips is the lead author of a report published in the online version of Science.


"This implies that the planet's interior is more rigid, and thus colder, than we thought before."The discovery was made using the Shallow Radar (SHARAD) instrument on the Orbiter, which has provided the most detailed pictures to date of the interior layers of ice, sand and dust that make up the north polar cap on Mars. The radar images reveal long, continuous layers stretching up to 600 miles or about one-fifth the length of the United States.
This wide-angle view of the martian north polar cap was acquired on March 13, 1999, during early northern summer. The light-toned surfaces are residual water ice that remains through the summer season. The nearly circular band of dark material surrounding the cap consists mainly of sand dunes formed and shaped by wind. The north polar cap is roughly 1100 kilometers (680 miles) across. Credit: NASA/JPL/Malin Space Science Systems




"In our first glimpses inside the polar ice using the radar on Mars Reconnaissance Orbiter, we can clearly see stacks of icy material that trace the history of Mars's climate," said Jeffrey Plaut from NASA's Jet Propulsion Laboratory in Pasadena, Calif. Plaut is a science team member and a co-author of the paper. "Radar has opened up a new avenue for studying Mars's past."The radar pictures show a smooth, flat border between the ice cap and the rocky Martian crust.


On Earth, the weight of a similar stack of ice would cause the planet's surface to sag. The fact that the martian surface is not bending means that its strong outer shell, or lithosphere, a combination of its crust and upper mantle, must be very thick and cold."The lithosphere of a planet is the rigid part. On Earth, the lithosphere is the part that breaks during an earthquake," said Suzanne Smrekar, deputy project scientist for Mars Reconnaissance Orbiter at JPL. "The ability of the radar to see through the ice cap and determine that there is no bending of the lithosphere gives us a good idea of present day temperatures inside Mars for the first time."Temperatures in the outer portion of a rocky planet like Mars increase with depth toward the interior. The thicker the lithosphere, the more gradually the temperatures increase. The discovery of a thicker martian lithosphere therefore implies that any liquid water lurking in aquifers below the surface would have to be deeper than previously calculated, where temperatures are warmer. Scientists speculate that any life on Mars associated with deep aquifers also would have to be buried deeper in the interior.

This map shows the thickness of the north polar layered deposits on Mars as measured by the Shallow Radar instrument on NASA's Mars Reconnaissance Orbiter.Credit: NASA/JPL-Caltech/University of Rome/SwRI


The radar pictures also reveal four zones of finely spaced layers of ice and dust separated by thick layers of nearly pure ice. Scientists think this pattern of thick ice-free layers represents cycles of climate change on Mars on a time scale of roughly one million years. Such climate changes are caused by variations in the tilt of the planet's rotational axis and in the eccentricity of its orbit around the sun. The observations support the idea that the north polar ice cap is geologically active and relatively young, at about 4 million years.

Mars Cold Goes Down Deep


New observations from NASA's Mars Reconnaissance Orbiter indicate that the crust and upper mantle of Mars are stiffer and colder than previously thought.The findings suggest any liquid water that might exist below the planet's surface and any possible organisms living in that water, would be located deeper than scientists had suspected."We found that the rocky surface of Mars is not bending under the load of the north polar ice cap," said Roger Phillips of the Southwest Research Institute in Boulder, Colo. Phillips is the lead author of a report published in the online version of Science.


"This implies that the planet's interior is more rigid, and thus colder, than we thought before."The discovery was made using the Shallow Radar (SHARAD) instrument on the Orbiter, which has provided the most detailed pictures to date of the interior layers of ice, sand and dust that make up the north polar cap on Mars. The radar images reveal long, continuous layers stretching up to 600 miles or about one-fifth the length of the United States.
This wide-angle view of the martian north polar cap was acquired on March 13, 1999, during early northern summer. The light-toned surfaces are residual water ice that remains through the summer season. The nearly circular band of dark material surrounding the cap consists mainly of sand dunes formed and shaped by wind. The north polar cap is roughly 1100 kilometers (680 miles) across. Credit: NASA/JPL/Malin Space Science Systems




"In our first glimpses inside the polar ice using the radar on Mars Reconnaissance Orbiter, we can clearly see stacks of icy material that trace the history of Mars's climate," said Jeffrey Plaut from NASA's Jet Propulsion Laboratory in Pasadena, Calif. Plaut is a science team member and a co-author of the paper. "Radar has opened up a new avenue for studying Mars's past."The radar pictures show a smooth, flat border between the ice cap and the rocky Martian crust.


On Earth, the weight of a similar stack of ice would cause the planet's surface to sag. The fact that the martian surface is not bending means that its strong outer shell, or lithosphere, a combination of its crust and upper mantle, must be very thick and cold."The lithosphere of a planet is the rigid part. On Earth, the lithosphere is the part that breaks during an earthquake," said Suzanne Smrekar, deputy project scientist for Mars Reconnaissance Orbiter at JPL. "The ability of the radar to see through the ice cap and determine that there is no bending of the lithosphere gives us a good idea of present day temperatures inside Mars for the first time."Temperatures in the outer portion of a rocky planet like Mars increase with depth toward the interior. The thicker the lithosphere, the more gradually the temperatures increase. The discovery of a thicker martian lithosphere therefore implies that any liquid water lurking in aquifers below the surface would have to be deeper than previously calculated, where temperatures are warmer. Scientists speculate that any life on Mars associated with deep aquifers also would have to be buried deeper in the interior.

This map shows the thickness of the north polar layered deposits on Mars as measured by the Shallow Radar instrument on NASA's Mars Reconnaissance Orbiter.Credit: NASA/JPL-Caltech/University of Rome/SwRI


The radar pictures also reveal four zones of finely spaced layers of ice and dust separated by thick layers of nearly pure ice. Scientists think this pattern of thick ice-free layers represents cycles of climate change on Mars on a time scale of roughly one million years. Such climate changes are caused by variations in the tilt of the planet's rotational axis and in the eccentricity of its orbit around the sun. The observations support the idea that the north polar ice cap is geologically active and relatively young, at about 4 million years.

Wednesday, May 07, 2008

Mobile Phone Specifications and Features

What would you call a mobile phone that has everything from communication, information and entertainment applications? There has been a substantial growth in the mobile Phone sector both in terms of e connectivity and technology. From basic phones to a mini computer, mobile phones cater to the varied needs of equally heterogeneous users. A 'must have' to complement our contemporary lifestyle, your phone helps you organize your personal and professional world with equal fervour.

From the first generation to the third generation - the journey of mobile phones industry is an ongoing process. The new generation mobile phones are getting highly advanced and multi-faceted. Latest handsets from mobile manufacturers such as Nokia, Sony Ericsson, Motorola, etc., are now power packed with PDA (Personal Digital Assistant) and operating systems that allow mobile users to install other applications specially designed for mobile phones.

With 3G technology, the mobile industry has taken a huge stride forward and mobile users are now experiencing the full potential of 3G wireless technology. With high speed data access and ease of connectivity, 3G mobile phones have given a new meaning to the word 'mobile'. The new Walkman series phones from Sony Ericsson to business phones from Samsung & Nokia, Smartphone’s with smart features are all set to change your mobile lifestyle.

Entertainment applications on mobile phones have further enhanced mobile capabilities. Mobile games, camera functions, media player and FM radio are some of the multimedia applications that have changed the way you were using your mobile phone. In addition to that mobile phones have also become the latest information centre. With WAP, GPRS and EDGE technologies, your world is at your fingertips. Connect and share data to other compatible devices via Bluetooth, Infrared & USB. Get one and see the difference.

Tuesday, May 06, 2008

Latest Mobile Version

Mobile phones plays a major role in our daily modern life..Because they are the better,
cheaper and easier ways to communicate.

Technology and fashion have given a number of latest and advanced handsets to suit the needs of every segment of mobile users. Orange mobile phones rock the world of mobile phone with their stunning looks and advanced features and also with the quality.....
Every manufacturer trying the best to insert advanced technology in the mobile phones for the sake of users. Orange mobile phones really have done miracle in the market with their stunning features, as well as functions. Orange mobile phones come with 3G technology, which offers wireless voice telephony with broadband wireless data, in addition with, video calling capabilities.
SPV M 5000 is also another latest endeavour from Orange, it possesses the Microsoft windows, which enables you to work with word, excel and power point on your mobile phone.This is one of the advance version ..It also has a large memory and the latest Active Sync 4.0 weighing 285g..Orange Mobile Phones provide better communication services ,Rather than any other ordinary handset. They also have made communication impulsive and easily available part of day to day life.

Wednesday, April 30, 2008

Spyware

Spyware is software installed on your computer without your consent to monitor or control your computer use. Clues that spyware is on a computer may include a barrage of pop-ups, a browser that takes you to sites you don't want, unexpected toolbars or icons on your computer screen, keys that don't work, random error messages, and sluggish performance when opening programs or saving files. In some cases, there may be no symptoms at all.

To lower your risk of spyware infections:

* Update your operating system and Web browser software, and set your browser security high enough to detect unauthorized downloads.
* Use anti-virus and anti-spyware software, as well as a firewall, and update them all regularly.
* Download free software only from sites you know and trust. Enticing free software downloads frequently bundle other software, including spyware.
* Don't click on links inside pop-ups.
* Don't click on links in spam or pop-ups that claim to offer anti-spyware software; you may unintentionally be installing spyware.

Wednesday, April 23, 2008

Diabetic Eye Problems

Also called: Diabetic retinopathy

Do you know what causes the most blindness in U.S. adults? It is an eye problem caused by diabetes, called diabetic retinopathy. Your retina is the light-sensitive tissue at the back of your eye. You need a healthy retina to see clearly.

Diabetic retinopathy happens when diabetes damages the tiny blood vessels inside your retina. You may not notice at first. Symptoms can include

* Blurry or double vision
* Rings, flashing lights or blank spots
* Dark or floating spots
* Pain or pressure in one or both of your eyes
* Trouble seeing things out of the corners of your eyes

If you have diabetes, you should have a complete eye exam every year. Finding and treating problems early may save your vision. Treatment often includes laser treatment or surgery.

Monday, March 24, 2008

Location-based games

Games played on a mobile piece of equipment using localization technology like GPS are called location-based games. In other words: while it does not matter for a normal mobile game where exactly you are (play them anywhere at anytime), the player's coordinate and movement are main elements in a Location-based game. The best-known example is the treasure hunt game Geocaching, which can be played on any mobile appliance with integrated or external GPS receiver. External GPS receivers are generally connected via Bluetooth. More and more mobile phones with integrated GPS are expected to come.

Besides Geocaching, there exist several other location-based games which are somewhat in the stage of research prototypes than a commercial success.

Monday, March 17, 2008

Mobile phone

The mobile phone or mobile, also called a wireless, cellular phone, cell phone, cell or hand phone (HP), is a long-range, portable electronic device used for mobile communication that uses a network of specialized foundation stations known as cell sites.

In addition to the standard voice function of a telephone, current mobile phones may support many other services, and accessories, such as SMS for text messaging, email, packet switching for access to the Internet, and MMS for sending and receiving photos and video. Most current mobile phones attached to a cellular network of base stations (cell sites), which is in turn interconnected to the public switched telephone network (PSTN) (the exception is satellite phones).

Monday, March 10, 2008

Software tools

Software tools for distributed processing contain standard APIs such as MPI and PVM and open source-based software solutions such as Beowulf and openMosix which facilitate the creation of a sort of "virtual supercomputer" from a collection of ordinary workstations or servers. Technology like Rendezvous pave the way for the making of ad hoc computer clusters. An example of this is the distributed rendering function in Apple's Shake compositing function. Computers running the Shake software simply need to be in proximity to each other, in networking terms, to automatically discover and use each other's resources. While no one has yet built an ad hoc computer cluster that rivals even yesteryear's supercomputers, the line between desktop, or even laptop, and supercomputer is beginning to blur, and is probable to continue to blur as built-in support for parallelism and distributed processing increases in mainstream desktop operating systems. An easy programming language for supercomputers remains an open explore topic in Computer Science.

Tuesday, March 04, 2008

Chemistry in Natural Science

Constituting the scientific learning of matter at the atomic and molecular scale, chemistry deals primarily with collections of atoms, such as gases, molecules, crystals, and metals. The composition, statistical properties, transformations and reply of these materials are studied. Chemistry also absorbs understanding the properties and interactions of individual atoms for use in larger-scale applications. Most chemical procedure can be studied directly in a laboratory, using a series of (often well-tested) techniques for manipulating materials, as well as an understanding of the underlying processes. Chemistry is often known as "the central science" because of its role in connecting the other natural sciences.

Early experiments in chemistry had their roots in the system of Alchemy, a set of values combining mysticism with physical experiments. The science of chemistry began to expand with the work of Robert Boyle, the discoverer of gas, and Antoine Lavoisier, who developed the theory of the Conservation of mass. The discovery of the chemical elements and the concept of Atomic Theory began to systematize this science, and researchers developed a basic understanding of states of matter, ions, chemical bonds and chemical reactions. The success of this science led to a complementary chemical industry that now acting a significant role in the world economy.

Monday, February 25, 2008

Banknote

A banknote (often known as a bill or simply a note) is a type of negotiable instrument, a promissory note made by a bank payable to the bearer on demand, used as money, and in many jurisdictions is legal tender. Along with coins, banknotes build up the cash or bearer forms of all modern money. With the exception of non-circulating high-value or precious metal commemorative issues, coins are commonly used for lower valued monetary units, while banknotes are used for higher values.

Tuesday, February 19, 2008

Photographic Printing

Photographic printing is the method of producing a final image for viewing, usually on sensitized paper from a previously prepared photographic negative.

The procedure consists of three major steps, performed in a photographic darkroom or within an automated photo printing machine:

1. Exposure of the picture onto the sensitized paper using a contact printer or enlarger.

2. Processing of the latent image through a more than one step chemical immersion process.

1. Development of the uncovered image.

2. Optionally Stopping improvement by neutralizing, diluting or removing developing agent.

3. Fixing the final print by dissolving remaining unexposed/undeveloped light-sensitive liquid.

4. Washing thoroughly to eliminate chemicals used in processing, protecting the finished print from fading and decay.

3. If finished on glossy paper, ferrotyping to enhance the reflective gloss.

4. Optional Toning of the print through extra chemical processes.

5. Texturing and drying of the finishing print.

Monday, February 11, 2008

Inkless Printers

Inkless printers use paper with colorless dye crystals embedded connecting the two outer layers of the paper. When the printer is twisted on, heat from the drum causes the crystals to colorize at different rates and become visible. The technology was worked on by Zink Imaging and is now accessible (2007). Because of the way it prints, the printer can be as little as a business card, the images are waterproof, and in fact, one product slated for release by Zink Imaging is a digital camera with a printer built into it. Xerox is also working on an inkless printer which will use a extraordinary reusable paper coated with a few micrometres of UV light sensitive chemicals. The printer will use a particular UV light bar which will be able to write and erase the paper. As of early 2007 this technology is at a halt in development and the text on the printed pages can only last between 16-24 hours before fading.

Wednesday, February 06, 2008

Integrated circuit

Integrated circuit viewing memory blocks, logic and input/output pads around the periphery Microchips with a transparent window, showing the integrated circuit inside. Note the fine silver-colored wires that attach the integrated circuit to the pins of the package. A monolithic integrated circuit (also known as IC, microcircuit, microchip, silicon chip, or chip) is a miniaturized electronic circuit (consisting mostly of semiconductor devices, as well as passive components) that has been contrived in the surface of a thin substrate of semiconductor material.

A hybrid integrated circuit is a miniaturized electronic circuit build of individual semiconductor devices, as well as passive components, bonded to a substrate or circuit board.

Monday, January 28, 2008

Minicomputer

Minicomputer is a mostly outmoded term for a class of multi-user computers which generate the middle range of the computing spectrum, in between the largest multi-user systems (traditionally, mainframe computers) and the smallest single-user systems (microcomputers or personal computers). Formerly this class created a distinct group with its own hardware and operating systems notably having smaller address space (notice the cited numbers of bits in a data word, ranging from 8 to 24 bits commonly around 16-bits). While the distinction between mainframe computers and smaller computers residue fairly clear, contemporary middle-range computers are not well differentiated from personal computers, being typically just a more powerful but still compatible version of a personal computer. More modern conditions for such machines consist of midrange systems (common in IBM parlance), workstations (common in Sun Microsystems and general UNIX/Linux parlance), and servers.

Sunday, January 20, 2008

Microcomputer

A microcomputer is mostly often taken to mean a computer with a microprocessor (µP) as its CPU. Another common characteristic of these computers is that they take up physically small amounts of space. Desktop computers, video game consoles, laptop computers, tablet PCs, and a lot of handheld strategy may all be considered examples of microcomputers. Most microcomputers serve only a particular user at a time, but some, in the form of PCs and workstations running e.g. a UNIX(-like) operating system, may cater to a number of users concurrently. The µP does the greater part of the job of calculating on and manipulating data that all computers do.

Monday, January 07, 2008

Mainframes

Mainframes (often colloquially referred to as big iron) are enormous and expensive computers used mostly by government institutions and large companies for mission critical applications, usually bulk data processing such as censuses, industry/consumer statistics, ERP, and financial transaction processing.

The term originated during the early 1970s with the introduction of lesser, fewer complex computers such as the DEC PDP-8 and PDP-11 series, which became known as minicomputers or in a minute minis. The industry/users then coined the term "mainframe" to describe bigger, earlier types (previously known simply as "computers").

Tuesday, January 01, 2008

The first bullets

Advances in one either resulted beginning or precipitated advances in the other. Originally, bullets were surrounding metallic or stone balls placed in front of an explosive charge of gun powder at the end of a closed tube. As firearms became more scientifically advanced, from 1500 to 1800, bullets changed very little. They remained uncomplicated round lead balls, called rounds, differing only in their diameter.

The development of the hand culverin and matchlock arquebus brought regarding the use of cast lead balls as projectiles. "Bullet" is consequential from the French word "boulette" which roughly means "little ball". The original musket bullet was a spherical lead ball two sizes slighter than the bore, wrapped in a loosely-fitted paper patch which served to hold the bullet in the barrel firmly upon the powder. (Bullets that were not firmly upon the concentrate upon firing risked causing the barrel to explode, with the condition known as a "short start".) The loading of muskets was, therefore, easy with the old smooth-bore Brown Bess and comparable military muskets. The original muzzle-loading rifle, on the other hand, with a more intimately fitting ball to take the rifling grooves, was loaded with difficulty, particularly when the bore of the barrel was dirty from previous firings ("fouled"). For this reason, early rifles were not generally used for military purposes. Early rifle bullets necessary cloth patches to grip the rifling grooves, and to hold the bullet securely against the powder.

The first half of the nineteenth century saw a different change in the shape and function of the bullet. In 1826, Delirque, a French infantry officer, imaginary a breech with abrupt shoulders on which a spherical bullet was rammed down until it caught the rifling grooves.

Tuesday, December 25, 2007

Bullet

A bullet is a rock-hard projectile propelled by a firearm or air gun and is normally made from metal (usually lead). A bullet (in contrast to a shell) does not contain explosives, and damages the intended target solely by imparting kinetic energy upon impact. Modern bullets for firearms are generally part of a cartridge, also known as a round. In contrast, bullets for air guns are not part of a cartridge. The word "bullet" is sometimes used to refer to the grouping of bullet, case, gunpowder and primer more properly known as a cartridge or round.; the Oxford English Dictionary definition of a bullet is "a projectile of lead ... for firing from a rifle, revolver etc."