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Friday, February 25, 2011
Thursday, February 17, 2011
Nvidia 3D Vision
Nvidia 3D Vision
3D Vision  is a stereoscopic gaming kit from Nvidia which consists of LC shutter glasses and driver software which enables stereoscopic vision for any Direct3D game, with various degrees of compatibility. There have been many examples of shutter glasses over the past decade, but the NVIDIA 3D Vision gaming kit introduced in 2008 introduced this technology to mainstream consumers and PC gamers.
The kit is compatible with high-end CRT monitors, which typically support display modes up to 1024x768 with 100 Hz refresh rate, and specially designed 120 Hz LCD monitors from ViewSonic, Samsung, and recently Asus, Acer, Alienware, and LG. It requires a graphics card from Nvidia.
Shutter glasses
The glasses use wireless IR protocol and can be charged from a USB cable, allowing around 20 hours of continuous use.
The wireless emitter connects to the USB port and interfaces with the underlying driver software. It also contains a VESA Stereo port for connecting supported DLP TV sets, although standalone operation without a PC with installed Nvidia 3D Vision driver is not allowed.
NVIDIA includes one pair of shutter glasses in their 3D Vision kit, SKU 942-10701-0003. Each lens operates at 60Hz, and alternate to create a 120Hz 3-dimensional experience.
This version of 3D Vision supports select 120 Hz monitors, 720p DLP projectors, and passive-polarized displays from Zalman
Stereo driver
The roots of the Nvidia stereo driver can be traced to the software supplied with the wired ELSA Revelator shutter glasses from 1990s. Nvidia has acquired the technology and has provided support for various stereoscopic display technologies, including stereoscopic shutter glasses, with their own version driver which only worked with Nvidia graphics cards.
In 2008 Nvidia undertook major rewrite of the driver which was converted to use Windows Display Driver Model, making it only compatible withWindows Vista and high end graphics cards such as GeForce GTX 295 or better 580. The stereo driver was renamed as 3D Vision driver.
Monday, February 7, 2011
Top Ten Discoveries of 2010: Nat Geo News's Most Popular
Top Ten Discoveries of 2010: Nat Geo News's Most Popular
10. Quake Altered Axis, Changed Time
Image courtesy NASA Earth Observatory
February's Chile earthquake was so powerful that it likely shifted an Earth  axis and shortened the length of a day—a NASA revelation that helped  make this story National Geographic News's tenth most visited of 2010.
By speeding up Earth's rotation, the magnitude 8.8 earthquake—the fifth strongest ever recorded, according to the USGS—should  have shortened an Earth day by 1.26 millionths of a second, according  to new computer-model calculations by geophysicist Richard Gross of NASA's Jet Propulsion Laboratory in California.
9. Hints of "Structures" Beyond Universe
"Dark flow" is no fluke, suggested a March study that strengthened  the case for unknown, unseen "structures" lurking on the outskirts of  creation.
In 2008 scientists reported the discovery of hundreds of  galaxy clusters streaming in the same direction at more than 2.2  million miles (3.6 million kilometers) an hour.
This mysterious  motion can't be explained by current models for distribution of mass in  the universe. So the researchers made the controversial suggestion that the clusters are being tugged on by the gravity of matter outside the known universe.
In  the 2010 study the same team found that the dark flow extends even  deeper into the universe than previously reported: out to at least 2.5  billion light-years from Earth.
8. Lizard Evolving for Live Birth
Evolution has been caught in the act, according to a study we covered this summer suggesting that a species of Australian lizard is abandoning egg-laying in favor of live birth.
Along the warm coastal lowlands of New South Wales (map),  the yellow-bellied three-toed skink lays eggs to reproduce. But  individuals of the same species living in the state's higher, colder  mountains are almost all giving birth to live young.
7. Shapes Reveal "Lost" Amazon World
 Hundreds of circles, squares, and other geometric shapes once hidden by  forest hint at a previously unknown ancient society that flourished in  the Amazon, according to a study released in January.
Satellite  images of the upper Amazon River Basin taken since 1999 have revealed  more than 200 geometric earthworks spanning a distance greater than 155  miles (250 kilometers). 
The researchers behind the January  study, though, estimated that nearly ten times as many such  structures—of unknown purpose—may exist undetected under the Amazon's  forest cover.
6. Black Holes Contain Universes?
Like part of a cosmic Russian doll, our universe may be nested inside a black hole that is itself part of a larger universe.
In  turn, all the black holes found so far in our universe—from the  microscopic to the supermassive—may be doorways into alternate  realities.
According to a mind-bending study released this past  spring, a black hole is actually a tunnel between universes—a type of  wormhole. The matter the black hole attracts doesn't collapse into a  single point, as has been predicted, but rather gushes out a "white  hole" at the other end of the black one, the theory goes.
5. "Yoda Bat," Other Rarities Found
This tube-nosed fruit bat—immortalized elsewhere as the "Yoda bat"—is  just one of the roughly 200 species encountered during two scientific  expeditions to Papua New Guinea in 2009, including a katydid that "aims for the eyes" and a frog that does a mean cricket impression, Conservation International announced in October.
Though  seen on previous expeditions, the bat has yet to be formally documented  as a new species, or even named. Like other fruit bats, though, it  disperses seeds from the fruit in its diet, perhaps making the flying  mammal crucial to its tropical rain forest ecosystem.
In all, the expeditions to Papua New Guinea's Nakanai and Muller mountain ranges found 24 new species of frogs, 2 new mammals, and nearly a hundred new insects.  The remote island country's mountain ranges—which have yielded troves  of new and unusual species in recent years—are accessible only by plane,  boat, foot, or helicopter.
4. Noah's Ark Found in Turkey
A team of evangelical Christian explorers claimed they'd found the remains of Noah's ark beneath snow and volcanic debris on Turkey's Mount Ararat (pictured) in April.
But  some archaeologists and historians took the latest claim that Noah's  ark had been found about as seriously as they had past ones—not very.
3. Odd Species Found Off Greenland
Looking like a creature from the Alien movies, this nightmarish "longhead dreamer" anglerfish was until recently an alien species to Greenland waters (map).
The dreamer, which grows to a not-so-monstrous 6.7 inches (17 centimeters) long, is 1 of 38 fish species found around the Arctic island for the first time, according to a study released in February.
Ten of the species new to Greenland are new to science, too. All 38 were discovered since the last such survey in 1992.
2. Dead Sea Scrolls Mystery Solved
The recent decoding of a cryptic cup, the excavation of ancient Jerusalem  tunnels, and other archaeological detective work may help solve one of  the great biblical mysteries: Who wrote the Dead Sea Scrolls?
The  new clues hint that the scrolls, which include some of the oldest known  biblical documents, may have been the textual treasures of several  groups, hidden away during wartime—and may even be "the great treasure  from the Jerusalem Temple," which held the Ark of the Covenant,  according to the Bible.
1. Fish With "Hands" Are New Species
Using its fins to walk, rather than swim, along the ocean floor in an  undated picture, the pink handfish is one of nine newly named species  described in a scientific review of the handfish family released in May.
The  new-species determinations were made based on a number of factors,  including number of vertebrae and fin rays, coloration, the presence of  scales and spines, and proportional body measurements, according to the  review's author.
Even among the previously known species, the fish are poorly studied, the review authors added. Little is known about their biology or behavior.
http://www.nationalgeographic.com/
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