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Posts Tagged ‘University Of Cambridge’

Stephen Hawking: ‘I Held A Party For Time-Travellers… But None Came’

Posted by Ram Kumar Shrestha on July 3, 2012

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Hawking

Stephen Hawking recently gave a party – for time travellers.

But while he told plenty of people about the date, sent out invitations and waited patiently for them to arrive, no body came.

Of course that might have been because he waited until the party was over to send out the invites.

Professor Hawking explained his failed experiment in a recent interview with various journalists, written up by Ars Technica.

“I have experimental evidence that time travel is not possible,” he said.

“I gave a party for time-travellers, but I didn’t send out the invitations until after the party. I sat there a long time, but no one came.”

Hawking has previously spoken about the party, which was ‘held’ on 28th June 2009, and produced a video about the experiment – but due to the laws of causality, no one has retrospectively showed up.

Hawking also said that Einstein’s theories offer the possibility of travelling backwards in time – but “it is likely that warping would trigger a bolt of radiation that would destroy the spaceship and maybe the space-time itself”.

In the interview Hawking was also asked about alien life – and reassuringly said that it isn’t likely aliens are coming to visit.

“I’m discounting claims that UFOs contain aliens. Why would they appear only to cranks and weirdos?” he asked. Read the rest of this entry »

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Pattern Master Wins Million-dollar Mathematics Prize

Posted by Ram Kumar Shrestha on March 22, 2012

By Jacob Aron, New Scientist

Imagine I present you with a line of cards labelled 1 through to n, where nis some incredibly large number. I ask you toMathematician Endre Szemerédi is affectionately said to have an "irregular" mind remove a certain number of cards – which ones you choose is up to you, inevitably leaving ugly random gaps in my carefully ordered sequence. It might seem as if all order must now be lost, but in fact no matter which cards you pick, I can always identify a surprisingly ordered pattern in the numbers that remain.

As a magic trick it might not equal sawing a woman in half, but mathematically proving that it is always possible to find a pattern in such a scenario is one of the feats that today garnered Endre Szemerédi mathematics’ prestigious Abel prize.

The Norwegian Academy of Science and Letters in Oslo awarded Szemerédi the one million dollar prize today for “fundamental contributions to discrete mathematics and theoretical computer science”. His specialty was combinatorics, a field that deals with the different ways of counting and rearranging discrete objects, whether they be numbers or playing cards.

The trick described above is a direct result of what is known as Szemerédi’s theorem, a piece of mathematics that answered a question first posed by the mathematicians Paul Erdos and Pál Turán in 1936 and that had remained unsolved for nearly 40 years.

Irregular mind

The theorem reveals how patterns can be found in large sets of consecutive numbers with many of their members missing. The patterns in question are arithmetic sequences – strings of numbers with a common difference such as 3, 7, 11, 15, 19.

Such problems are often fairly easy for mathematicians to pose, but fiendishly difficulty to solve. The book An Irregular Mind, published in honour of Szemerédi’s 70th birthday in 2010, stated that “his brain is wired differently than for most mathematicians”. Read the rest of this entry »

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Laboratory-Grown Blood Vessels Offer Hope For Heart Disease Treatment

Posted by Ram Kumar Shrestha on January 30, 2012

British scientists have successfully ‘grown’ the three main types of cells that make up the walls of a blood vessel – a breakthrough that could revolutionise treatment for conditions such as heart disease and strokes.

Researchers from the University of Cambridge, funded by the Wellcome Trust, successfully created blood vessels in the laboratory following a four-year study using patients’ own skin cells to manufacture different types of vascular smooth muscle cells.

Scientists began by studying pluripotent stem cells. These are early biological cells that can transform into other cell types and renew themselves to produce more stem cells.

They discovered methods of turning the stem cells into various types of vascular smooth muscle cells, which help form blood vessels after being injected into mice. Read the rest of this entry »

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Laboratory-Grown Blood Vessels Offer Hope For Heart Disease Treatment

Posted by Ram Kumar Shrestha on January 17, 2012

British scientists have successfully ‘grown’ the three main types of cells that make up the walls of a blood vessel – a breakthrough that could revolutionise treatment for conditions such as heart disease and strokes.

Researchers from the University of Cambridge, funded by the Wellcome Trust, successfully created blood vessels in the laboratory following a four-year study using patients’ own skin cells to manufacture different types of vascular smooth muscle cells.

Scientists began by studying pluripotent stem cells. These are early biological cells that can transform into other cell types and renew themselves to produce more stem cells.

They discovered methods of turning the stem cells into various types of vascular smooth muscle cells, which help form blood vessels after being injected into mice.

The study, published in the Nature Biotechnology, found that their technique was 90% effective during tests and would be suitable for producing blood vessels on a wider scale. This means the so-called ‘test tube’ treatment could be used for kidney dialysis and injury repair. Read the rest of this entry »

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Stephen Hawking: Women Are ‘A Complete Mystery’

Posted by Ram Kumar Shrestha on January 5, 2012

Professor Stephen Hawking, one of the world’s most eminent physicists, has admitted that women number among black holes and supersymmetry as one of the greatest mysteries in the universe.

In an interview with New Scientist magazine ahead of his 70th birthday on Sunday, Hawking was asked what he thinks about most during the day.

“Women,” he replied. “They are a complete mystery”.

Hawking was diagnosed with motor neurone disease at the age of 21, and was expected to live for just a few years.

Since his diagnosis Hawking has gone on to become one of the world’s most famous scientists, both for his academic work on black holes and his books including A Brief History Of Time, which has sold more than 10m copies since 1988.

In the interview with New Scientist, Hawking also refers to the “blunders” that have blighted his academic and also his personal life.

“I used to think that information was destroyed in black holes,” he said. “That was my biggest blunder, or at least my biggest blunder in science.”

Asked to list the most exciting developments in science in his career, Hawking discusses recent evidence discovered that appear to confirm the theory of inflation – the idea that the universe underwent a period of sudden expansion after the big bang.

Read the Article at HuffingtonPost

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Happy Kids Divorce More: University Of Cambridge Study

Posted by Ram Kumar Shrestha on March 15, 2011


No doubt after number of divorces, finally they would know what is life and that time it could be too late. If they can not compromise and ignore own weakness with existing own, the same process will repeat with others as well ruining their own life and kids’ as well.
Read the Article at HuffingtonPost

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