Is There Life in Black Holes?

The 'Gravitational Singularity' Black holes are essentially regions of space whose gravitational pull is so strong that nothing -- not even light -- can escape. It's for that reason that the phenomena are called "black," since all light hitting them gets absorbed, leaving nothing for the viewer to see.Black holes can be either rotating or non-rotating, according to current theory, but either way, a "gravitational singularity" lies at the center.Surrounding each black hole, meanwhile, is an invisible boundary known as the "event horizon" that essentially marks the point of no return. Anything that reaches a black hole's event horizon is expected to get sucked toward its singularity, with no hope of escaping again.Though much of our current...

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Rare Fosil of Sea Reptile

Alaska scientists have discovered the fossil of a rare, prehistoric marine reptile that is likely the most complete remnant of the creature ever found in North America.The nearly complete fossilized skeleton is of a thalattosaur, a long-tailed sea creature that plied warm, shallow waters in the early days of dinosaurs and became extinct at the end of the Triassic period some 200 million years ago.The discovery of the fossil, found during an extreme low tide along the shore of the Tongass National Forest, was announced this week by the Museum of the North at the University of Alaska, Fairbanks.Unlike most thalattosaur discoveries, which are fossilized remnants of individual bones and bone fragments,...

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Black Hole For First TIme In X-Ray

The upsurge of prohibited gas toward a black hole has been obviously imaged for a initial time in X-rays. understand-ing how black holes grow and- how have a difference behaves in their heated gravity. The black hole is during a core of a vast universe well well known as NGC 3115, which is located about 32 million light years from Earth. By imaging a prohibited gas during opposite distances from this supermassive black hole, astronomers have celebrated a vicious starting point where a suit of gas initial becomes dominated by a black hole’s sobriety and- falls inward. This stretch from a black hole is well well known as a “Bondi radius.” “It’s sparkling to find such transparent justification for gas in a hold of a large black hole,” pronounced...

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LI-FI VS WI-FI

FLICKERING lights are annoying but they may have an upside. Visible light communication (VLC) uses rapid pulses of light to transmit information wirelessly. Now it may be ready to compete with conventional Wi-Fi."At the heart of this technology is a new generation of high-brightness light-emitting diodes," says Harald Haas from the University of Edinburgh, UK. "Very simply, if the LED is on, you transmit a digital 1, if it's off you transmit a 0," Haas says. "They can be switched on and off very quickly, which gives nice opportunities for transmitting data." It is possible to encode data in the light by varying the rate at which the LEDs flicker on and off to give different strings of 1s and 0s. The LED intensity is modulated...

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Robots Understand Our World

Hema Koppula and Abhishek Anand at Cornell University in Ithaca, New York, hope to avoid this disappointing scenario by teaching robots to understand the context of their surroundings so that they can pick out individual objects in a room. "We have developed an algorithm that learns to identify the objects in home and office scenes," explains Koppula. Key to the system is Microsoft's Kinect sensor, which perceives real-world 3D scenes by combining two visible-light cameras with depth information from an infrared sensor. Koppula and Anand's algorithm learns to recognise particular objects by studying images labelled with descriptive tags such as "windows", "books" and "tables". The researchers used 27 labels in total, 10 each for...

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