Thursday, September 30, 2010

Scientists Discovered New habitable planet near Earth

This illustration released in 2009 by the European Southern Observatory (ESO) shows the planet Gliese 581e (blue). US astronomers said Wednesday they have discovered an Earth-sized planet that they think might be habitable, orbiting a nearby star, and believe there could be many more planets like it in space.
 -- A team of planet hunters led by astronomers at the University of California, Santa Cruz, and the Carnegie Institution of Washington has announced the discovery of an Earth-sized planet (three times the mass of Earth) orbiting a nearby star at a distance that places it squarely in the middle of the star's "habitable zone," where liquid water could exist on the planet's surface. If confirmed, this would be the most Earth-like exoplanet yet discovered and the first strong case for a potentially habitable one.

To astronomers, a "potentially habitable" planet is one that could sustain life, not necessarily one that humans would consider a nice place to live. Habitability depends on many factors, but liquid water and an atmosphere are among the most important.
"Our findings offer a very compelling case for a potentially habitable planet," said Steven Vogt, professor of astronomy and astrophysics at UC Santa Cruz. "The fact that we were able to detect this planet so quickly and so nearby tells us that planets like this must be really common."
The findings are based on 11 years of observations at the W. M. Keck Observatory in Hawaii. "Advanced techniques combined with old-fashioned ground-based telescopes continue to lead the exoplanet revolution," said Paul Butler of the Carnegie Institution. "Our ability to find potentially habitable worlds is now limited only by our telescope time."
Vogt and Butler lead the Lick-Carnegie Exoplanet Survey. The team's new findings are reported in a paper to be published in the Astrophysical Journal and posted online at
arXiv.org. Coauthors include associate research scientist Eugenio Rivera of UC Santa Cruz; associate astronomer Nader Haghighipour of the University of Hawaii-Manoa; and research scientists Gregory Henry and Michael Williamson of Tennessee State University.
The paper reports the discovery of two new planets around the nearby red dwarf star Gliese 581. This brings the total number of known planets around this star to six, the most yet discovered in a planetary system other than our own solar system. Like our solar system, the planets around Gliese 581 have nearly circular orbits.
The most interesting of the two new planets is Gliese 581g, with a mass three to four times that of the Earth and an orbital period of just under 37 days. Its mass indicates that it is probably a rocky planet with a definite surface and that it has enough gravity to hold on to an atmosphere, according to Vogt.
Gliese 581, located 20 light years away from Earth in the constellation Libra, has a somewhat checkered history of habitable-planet claims. Two previously detected planets in the system lie at the edges of the habitable zone, one on the hot side (planet c) and one on the cold side (planet d). While some astronomers still think planet d may be habitable if it has a thick atmosphere with a strong greenhouse effect to warm it up, others are skeptical. The newly discovered planet g, however, lies right in the middle of the habitable zone.

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Nokia N8 Nseries Features & Pics


Here You See Nokia N8 Pica  And Features.
Features:
The Nokia N8 weighs 135 g, measures 113.5 x 59 x 12.9 mm and, as you may already know, features:
  • 3.5 inch capacitive OLED touchscreen display with 640 x 360 pixels
  • GSM/EDGE 850/900/1800/1900
  • WCDMA (HSDPA/HSUPA) 850/900/1700/1900/2100
  • WLAN IEEE802.11 b/g/n
  • A-GPS
  • Ovi Maps with free navigation
  • Flash Lite 4.0 and Flash video support
  • Bluetooth 2.1
  • 3.5 mm jack
  • FM Radio and FM Transmitter
  • HDMI
  • 12MP autofocus camera with Carl Zeiss optics, Xenon flash, face recognition and HD (720p) video recording
  • 16GB of internal memory
  • MicroSD card support, up to 32GB
  • 1200 mAh battery

Pics:

Back Pose


Front Pose


Front Pose



Side Pose



Upper Pose



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Japan's Panasonic develops robot hair-washer

Panasonic robot development engineer Tohru Nakamura displays the new robot hairwasher, which scans a client's head using 3D technology, then shampoos their hair and massages the scalp with its rubbery "fingers".
Japan's Panasonic on Thursday unveiled a robot that can scans a client's head using 3D technology, then shampoos their hair and massages the scalp with its rubbery "fingers"

The prototype machine was developed to help thinly-stretched staff at healthcare facilities, common problem in rapidly-ageing Japan, said the electronics maker.
In a three-minute media demonstration, the automated hair salon, which resembles a dentist's chair with a wash basin, moved a pair of "arms" with 16 finger-like massage nobs while squirting shampoo and water.
"With 16 fingers, the robot washes hair and rinses the shampoo bubbles with the dexterity of human fingers," the company said in a statement.
"The robot's two arms scan the head three dimensionally as they move and measure and remember the head shape to apply just the right amount of pressure to each person when shampooing and massaging."
The machine, which will hit stores in a few years, was unveiled at a Tokyo fair of welfare goods that showed off 20,000 products, including a wheelchair that can dock into a three-wheeled electric motorbike and automobiles designed for disabled people.
Panasonic also displayed a prototype electric bed that turns into a wheelchair.

Awesome Technology.............

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World's first 'cyber superweapon' attacks China

The Stuxnet computer worm has wreaked havoc in China, infecting millions of computers around the country, state media have reported.
A computer virus dubbed the world's "first cyber superweapon" by experts and which may have been designed to attack Iran's nuclear facilities has found a new target -- China.

The Stuxnet computer worm has wreaked havoc in China, infecting millions of computers around the country, state media reported this week.
Stuxnet is feared by experts around the globe as it can break into computers that control machinery at the heart of industry, allowing an attacker to assume control of critical systems like pumps, motors, alarms and valves.
It could, technically, make factory boilers explode, destroy gas pipelines or even cause a nuclear plant to malfunction.
The virus targets control systems made by German industrial giant Siemens commonly used to manage water supplies, oil rigs, power plants and other industrial facilities.
"This malware is specially designed to sabotage plants and damage industrial systems, instead of stealing personal data," an engineer surnamed Wang at antivirus service provider Rising International Software told the Global Times.
"Once Stuxnet successfully penetrates factory computers in China, those industries may collapse, which would damage China's national security," he added.
Another unnamed expert at Rising International said the attacks had so far infected more than six million individual accounts and nearly 1,000 corporate accounts around the country, the official Xinhua news agency reported.
The Stuxnet computer worm -- a piece of malicious software (malware) which copies itself and sends itself on to other computers in a network -- was first publicly identified in June.
It was found lurking on Siemens systems in India, Indonesia, Pakistan and elsewhere, but the heaviest infiltration appears to be in Iran, according to software security researchers.
A Beijing-based spokesman for Siemens declined to comment when contacted by AFP on Thursday.
Yu Xiaoqiu, an analyst with the China Information Technology Security Evaluation Centre, downplayed the malware threat.
"So far we don't see any severe damage done by the virus," Yu was quoted by the Global Times as saying.
"New viruses are common nowadays. Both personal Internet surfers and Chinese pillar companies don't need to worry about it at all. They should be alert but not too afraid of it."
A top US cybersecurity official said last week that the country was analysing the computer worm but did not know who was behind it or its purpose.
"One of our hardest jobs is attribution and intent," Sean McGurk, director of the National Cybersecurity and Communications Integration Center (NCCIC), told reporters in Washington.
"It's very difficult to say 'This is what it was targeted to do,'" he said of Stuxnet, which some computer security experts have said may be intended to sabotage a nuclear facility in Iran.
A cyber superweapon is a term used by experts to describe a piece of malware designed specifically to hit computer networks that run industrial plants.
"The Stuxnet worm is a wake-up call to governments around the world," Derek Reveron, a cyber expert at the US Naval War School, was quoted as saying Thursday by the South China Morning Post.
"It is the first known worm to target industrial control systems."


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Sunday, September 26, 2010

Nokia 5800 Xpress Music Review: Sleek Smartphone

Review: Nokia 5800 XpressMusic was one smartphone that the masses wanted their hands on. On January 23rd, it finally went on sale and it blew the markets off their feet in a record time. This attention seeking phone was the first S60 5th edition touch control phone and therefore, the arrival created a gigantic hype in the market even before it’s released.
You Can See Pics Of Nokia 5800 Below.



The phone has a few sweeping controls .
Even the design of this phone is satisfying as it is a quality phone with a smart look to it. 
Very Advance Technolgy Is Used On Nokia 5800.
I Love It


Its Look Like Awesome.
The text entry of this phone is normal as long as you are getting used to the phone 
The phone comes with a 3.2 megapixel camera that has an autofocus facility inbuilt. In addition to this it has a dual-LED flash which makes it a decent camera to use and appreciate. You can even record a VGA video recording at 30 fps. Other delightful option that may want to make you buy this phone is that it supports the Wi-Fi system so the internet is easily accessible anywhere. Below are some of the high definition images, which clearly explain the limits of this camera.

Nice Features Battery Tiome Is Good..
No Doubt Its Beutiful & Great Mobile

You Can See Full Reviw Of Nokia 5800 On Nokia Wwebiste.




Wednesday, September 22, 2010

Discover New Ancient Chilean bird had 17 foot wingspan and huge bony teeth


The newly identified ancient bird Pelagornis chilensis is one of the biggest birds ever discovered, with a gigantic 17 foot wingspan and spiny, teeth-like structures along its massive beak that it used to hunt fish and squid.

Bird fossils are some of the most difficult for paleontologists to get their hands on, because bird bones are unusually soft and fragile. This makes them poor candidates for fossilization, and many bird fossils that do survive are badly crushed. In fact, the only other bony-toothed bird skeleton we had before this new discovery was a single, mostly crushed fossil.

That's part of what makes the Pelagornis find so remarkable - it's 70% complete and in pristine condition, giving scientists incontrovertible proof of its immense size and unusual teeth. Discovered in northern Chile, the bird's great wingspan allows scientists to better understand the physics of winged flight, helping them set an upper limit for maximum wing size.

There are, in fact, some birds with even longer wingspans, most notably Argentavis, another ancient South American bird said to have a 19 to 26 foot wingspan. However, the fossil evidence for this bird is much less secure than that of Pelagornis, as we have had to extrapolate this wingspan estimate from very few surviving bones. Pelagornis, on the other hand, is the largest bird yet that paleontologists feel certain really did have the wingspan these measurements suggest.

NASA shoots lasers at the Moon, because science is awesome

On "International Observe the Moon Night", and of the 400 or so Moon-centric gatherings around the world, this one had to be the most spectacular, as NASA shot laser blasts at the Moon...for strictly scientific purposes, honest.

Don't worry, this isn't the opening shots in NASA's long delayed invasion of the Moon. The laser, located at the Goddard Space Flight Center's Laser Ranging Facility in Greenbelt, Maryland, is used to track the location of the Lunar Reconnaissance Orbiter as it moves around the Moon.

The probe is about the size of a small SUV, it's moving at 3,600 miles per hours, and it's located 250,000 miles away, and yet NASA can figure out exactly where it is at any given moment by firing lasers at it 28 times every second and then measuring how the focused light is reflected back to Earth.

Usually, these activities are closed to the public, but NASA allowed tourists into the facility to watch the operation as part of International Observe the Moon Night. Photographer Debbie Mccallum was able to get this awesome photo, which you can see in its full glory below.


Introducing Stringbike: the bike with no chain

Hungarian bicycle designers have unveiled their new Stringbike in Padova, Italy. The design replaces the traditional chain with a symmetrical rope and pulley system, which they say is more efficient, makes for a more comfortable ride, and provides improved maneuverability around winding streets.


The new system is more complex than a chain and gears and consists of a rope and pulley on each side of the bike. The rotation of the pedals forces arms at each side to swing forward and backward on its shaft. When moving forward, the arm pulls the driving wire that is wound around a drum on the rear wheel, forcing the wheel to rotate. The arms at each side alternate so that when one is moving forward the other is moving backward.




The new system has 19 "gear" positions and the transmission ratio can be changed at any time by turning a shifting knob on the right handle grip. This moves the pulley shafts up and down along a traction path on an eccentric disc, which has 19 notches to adjust the height of the pulleys and distance between the center of rotation and the shaft. The gears can be changed even if the bicycle is stationary, but gear change speed increases with the speed of the bicycle.



The new system has 19 "gear" positions and the transmission ratio can be changed at any time by turning a shifting knob on the right handle grip. This moves the pulley shafts up and down along a traction path on an eccentric disc, which has 19 notches to adjust the height of the pulleys and distance between the center of rotation and the shaft. The gears can be changed even if the bicycle is stationary, but gear change speed increases with the speed of the bicycle.

The drive system will be able to be replaced with different size parts and different shaped eccentric discs for specialized purposes such as racing or touring. The rear wheel can be removed in only a few seconds without affecting the drive system. The driving rope is a special high density polyethylene (HDPE) product with high stability over extended periods, and which is resistant to mud, water, dirt, sand, and humidity.

The traditional bicycle has a chain and gears on one side, which the designers from bicycle manufacturer Schwinn Csepel Zrt say has led to a lot of problems, although they do not say exactly what those problems are. They say most are unnoticeable problems until you’ve actually ridden a symmetrical system. One problem that the new design does remove is soiling clothes with the grease or oil on the chain, since the pulley system is dry.

Another advantage of the system is that the ropes can be attached in different positions on the two sides of the bicycle, which means it can compensate if one of the rider’s legs is weaker than the other. The designers also say the lifetime of components will be longer than for conventional bicycles because chains are more susceptible to wear and abrasion, and the number of components is reduced.


More information: http://www.stringbike.com/







Friday, September 17, 2010

MotherBoard Buying Guide How To Buy ???




Motherboards specifications have gained sheer importance espeically in this age of high definition games and intense memory requiring operations with high data rate busses , high data transfer rates, high graphic cards busses , dual channel and DDR3 rams and the list goes on.
If you visit your local computer market , you may hear some of the below listed specifications while buying motherboard:
  • It supports SATA 3.5Gb/s.
  • It has PCI Express Slot.
  • Builtin VGA of 384 (Plus) Memory.
  • Supports DDR 2 and DDR 3 RAMs.
  • Supports Core 2 Duo processors.
  • 6 channel Built-in SoundCard.
  • 1 Giga Lan Builtin .
  • Built-in WiFi card
These above options may or may be not enough to check motherboard’s technological strength and many other aspects.
We may not be able to standardized motherboard selection process, but common factors that may come under consideration while purchasing a customized PC vary on the basis of needs and usage, for instance, computer gamer may require high GPU and latest video technology than any other aspects of the motherboard.
A common computer user may consider couple of points before purchasing computer motherboards:
  • Motherboard Brands like Intel , Asus, AMD, Nvidia chipsets.
  • CPU technology support and CPU Extended Speed Support.
  • Video technology & Graphic Memory.
  • Memory Controllers.
  • Storage Technology.
  • Peripherals
  • Some Extra Add-ons like Memory card reader, E-Sata etc.
Motherboards brands:
Choosing motherboards while planning for customized pc is always been a difficult task to meet, because of the verastility it offers and technology that may be available by different brands in different names.
Visit different motherboard manufacturer websites and have complete research about the motherboard specifications and technology it is ready to offer and capable of. Most common brands that are being used may be Intel, Asus, VIA, Nvidia, MSI, Mercury and etc.
CPU technology support and CPU Extended Speed Support:
Metaphorically, technology is evolving day by day. Nowdays, choosing right CPU for matching your needs is a difficult decesion, because within same brand it varies alot in technology. Like Intel has to offer lot of variations in the same core series. But what should be considered while considering CPU may be :
  • CPU Speed i.e. 3.2 Ghz
  • CPU FSB (in simple Bus Speed) this may be available in the range of 533 Mhz to 1333 Mhz.
  • CPU Cores like Single Core, Dual Core,Core 2 Duo, Core 2 Quad, iCore and in AMD it may be like AMD Athlons , AM2, AM2+ , etc.
  • Internal GPU (Graphic Processing Unit) capability.
Video Technology& Graphic Memory:
If we only have look on intel, it has alot to offer in built-in video technology ranging from standard video quality to HD quality experience. Bultin Video technology is enough for usual multimedia and office operations. But for extreme video usage like high definition games and video editing softwares, you may need dedicated graphic controllers on the motherboard. Builtin graphic memory ranges from 64 mb to 384+ mb memory shared with your memory controller installed and it may affect the performance.
Memory Controllers:
Memory controllers have been evolved so much from SD-RAMs to DDR RAMS, DDR-2  and now DDR-3. All they have to offer is speed and high data tranfser rates. While purchasing motherboards, one should keep in mind about assessment of maximum memory installation support i.e. like motherboard may support 4GB all in all and kind of architecture like DDR 3 and some other termonolgies like dual channel support.
Storage Technology:
While choosing motherboard , storage technology support is also an important factor to consider, whereas storage technology has also been changed drastically in recent years, ATA, ATA 133, SATA , SATA 3.5GB/s eSATA .
Peripherals:
In most of the recent motherboards, PS2 Mouse and Keyboard ports have been removed and now it comes with as many as USB ports. But this would be an additional bonus if new motherboard is also capable of PS2 mouse and keyboard as sometimes it really helps alot.
  • Builtin High definition sound cards with 6 to 8 channel supports are easily available in newly designed motherboards, but one should consider if it also supports SPDIF output.
  • USB 2.0 ports are available in recent motherboards, but now days USB 3.0 is more trendy in the technology for high speed USB transfers. Check it out if it is available.
  • Firewire port is an additional benefit , if it is available on the motherboard for high data transfers.
  • DVI output for high multimedia interface.
  • PCI Express Slot.
  • Lanfor neworking support.
Extra Add-ons:
  • Memory Card reader is an additional feature if it is available in the casing and supported by motherboard.
  • eSATA port is also an additional feature for connecting eSATA directly to PC as removeable device.
  • HDMI port for extreme visual experience.
  • Wireless Lan for networking support.
Final Thought:
First assess your requirments based on your usage, if you are game lover than always go for dedicated (seperate) graphic card controllers, because shared graphic controllers may cause you issues in playing high graphic requiring games.
Whereas , customizing PC has lot of advantages over already designed PC but for availing these advantage one should know what to add and vice versa.

Wednesday, September 8, 2010

Spain, Norway to build telecoms satellite


Spain said it signed a deal with Norway Tuesday to build a telecommunications satellite, to be launched in 2014 and used for both civilian and military purposes.

"The deal will involve investment of 300 million euros (380 million dollars) and allow the creation of more than 1,000 jobs," said a statement by Spain's Defence Minister Carme Chacon, who signed the agreement with her Norwegian counterpart, Grete Faremo.
Spain's government, through its satellite communications operator Hisdesat, will have a 60 percent stake, while Norway's Defence Logistic Organisation will hold the rest.
The satellite, "scheduled for launch in 2014, will provide better strategic communications coverage for the two countries, in the military as well as civilian sectors," the statement said.
Spain and Norway already cooperate in the defence sector, notably in the construction of frigates.

Pakistan Telecom Ufone Introduces New Call Pakages ; Call UK, USA & Canada for 45 Paisas Per 30 Seconds:


Pakistan Telecom Ufone Introduces New Call Pakages ; Call UK, USA & Canada for 45 Paisas Per 30 Seconds: 
Now make calls for 45 paisa per 30 seconds to the UK (landline only), USA (landline and mobile) and Canada (landline and mobile) without any daily charges.
This offer is valid on calls made 24 hours a day to the mentioned destinations.
Also with this offer make calls to the UK mobile networks O2, T-Mobile and Orange for only Rs. 4.50 per 30 seconds.
How to Activate?
To activate this offer simply dial *27#
Note: One time subscription charges will be Rs.10 exclusive of taxes
Terms and Conditions:
  • The comparison of International call rates depends upon other mobile operators call rates posted on their websites 30th August, 2010
  • Customers can avail this offer after the expiry of their IDD Bucket balance
  • This offer is valid till 14th Sep 2010
  • This offer is not valid for NTS and special numbers in UK
  • Customers can benefit from this offer after finishing with their IDD Bucket
  • The offer will lapse on changing your package.
  • This is a limited time offer

All Rights Reserverd By Ufone Telecom..

Pakistan Telecom Mobilink Introduces International Jazz Load!

Pakistan Telecom Mobilink Introduces International Jazz Load!” in collaboration with ezetop for its valued customers, enabling its customers to recharge Jazz accounts from international destinations.
customers can top-up the JAZZ Connection of your loved ones in Pakistan, from UK, USA, Spain, UAE and Saudi Arabia. This service will soon be available in more international destinations.
How to Jazz Load from International Locations?
To send JAZZ Load to Pakistan, just go to any of the ezetop affiliated retailer/money exchange near you OR visit www.ezetop.com and recharge JAZZ balance for anyone in Pakistan by following few simple steps mentioned below:
Through Retailer/Money Exchange:
  • Go to any ezetop affiliated retailer/money exchange
  • Request the agent/retailer to send top-up to any JAZZ Number in Pakistan
  • Inform the agent/retailer of the amount and JAZZ Number
  • Pay cash to agent/retailer
Through Website:
  • Visit www.ezetop.com
  • Register with ezetop website
  • Select Pakistan as country and JAZZ as operator
  • Enter the JAZZ Number and select the amount to top-up
  • Enter the credit/debit card information and complete the transaction
Customers from abroad may contact following numbers for ezetop customer support:
  • UK: 02078707976
  • UAE: 042146315
  • Saudi Arabia: 0550412342, 059-9656650

ENJoy It.........

Tuesday, September 7, 2010

Laser-based missile defense for helicopters being developed

Protecting helicopters in combat from heat-seeking missiles is the goal of new laser technology created at the University of Michigan and Omni Sciences, Inc., which is a U-M spin-off company.

"Battlefield terrain in places like Afghanistan and Iraq can be so rough that our troops have often had to rely on helicopters, and they can be easy targets for enemies with shoulder-launched missiles," said Mohammed Islam, a professor in the Department of Electrical Engineering and Computer Science.
"Our lasers give off a signal that's like throwing sand in the eyes of the missile."
Using inexpensive, off-the-shelf telecommunications fiber optics, Islam is developing sturdy and portable "mid-infrared supercontinuum lasers" that could blind heat-seeking weapons from a distance of 1.8 miles away.
The technology is being commercialized through Islam's company, Omni Sciences, which has recently received $1 million in grants from the Army and the Defense Advanced Research Projects Agency (DARPA) to build a second-generation prototype. The Army grant is for $730,000 and the DARPA funding is $300,000.
The lasers are promising for helicopter protection because their robust, simple design can withstand shaky helicopter flight and their mid-infrared supercontinuum mode can effectively jam missile sensors.
Most lasers emit light of just wavelength, or color. But supercontinuum lasers give off a focused beam packed with light from a much broader range of wavelengths. Visible-wavelength supercontinuum lasers, for example, discharge tight columns that appear white because they contain light from across the visible spectrum.
Islam's mid-infrared supercontinuum laser does the equivalent, but it is the first to operate in longer infrared wavelengths that humans can't see, but can feel as heat. Heat-seeking missiles are designed to home in on the infrared radiation that the helicopter engine emits.
Because this new laser emits such a broad spectrum of infrared light, it can effectively mimic the engine's electromagnetic signature and confuse any incoming weapons, Islam said.
This new light source has many military applications, Islam says, but it is especially well suited for helicopters.
"The laser-based infrared countermeasures in use now for some aircraft have 84 pieces of moving optics. They couldn't withstand the shake, rattle and roll of helicopters," Islam said. "We've used good, old-fashioned stuff from your telephone network to build a laser that has no moving parts."
Omni Sciences, Inc. has licensed Islam's technology from the University of Michigan. Islam has a financial interest in this company. Wright-Patterson Air Force Base and the Naval Air Command have also funded this research..

Facebook's new security feature: remote logouts

Facebook is rolling out a new security feature that lets users log out of their accounts remotely from another computer.

To do this, go to "account settings" on your Facebook page and click on "change" next to "account security." There, you'll see where else your Facebook account is logged in, including the type of device and the city it's in or near. To log out of any of them, click "end activity."
Facebook is making this available over the next couple of weeks. It will be accessible on computers, but not mobile devices.
The feature is similar to what Google Inc.'s Gmail offers to its users, and Facebook says it's designed to help users keep their logins secure.

Twitter tops 145 million registered users: CEO

Twitter has over 145 million registered users and more people are using mobile devices to access the microblogging service, according to co-founder Evan Williams.

Williams, in a post on the Twitter blog late Thursday, also said that nearly 300,000 third-party applications have been developed around the service, which allows users to pepper one another with messages of 140 characters or less.
"These new services help people get the most out of Twitter, contributing to user growth and new business opportunities -- both of which are critical to the long-term viability of the ecosystem," Williams said.
The Twitter chief executive said the number of people using Twitter on mobile devices had jumped 62 percent since mid-April and 16 percent of new users start on mobile, up from five percent in April.
Forty-six percent of active Twitter users regularly use a mobile device, he said.
Twitter acquired a third-party mobile application called Tweetie in April and turned it into the official Twitter program for Apple's iPhone.
Applications also exist for using Twitter on Research in Motion's Blackberry and devices powered by Google's Android mobile operating system.
Williams also published figures on the top 10 applications people have used to access Twitter during the past 30 days.
Seventy-eight percent used the official Twitter.com website, 14 percent used Twitter's mobile website m.twitter.com, eight percent used SMS, eight percent used Twitter for iPhone and seven percent used Twitter for Blackberry.
Other applications in the top 10 were TwitPic, a program for uploading photos, TweetDeck, Echofon, Google Friend Connect and UberTwitter.
Twitter said the numbers add up to more than 100 percent because people often use more than one application to access the service.