Saturday, September 27, 2014

Stephen Hawking laughs at black holes, UFOs and … – elEconomista.es

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The eminent physicist Stephen Hawking has displayed his brilliant mind and humor in a speech Saturday in Tenerife, where he answered questions from the striking workers.

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The physicist Stephen Hawking said today that the great technological advances that would like to see in the next hundred years is nuclear fusion because with it the energy problem on the planet would be solved and we would save gas greenhouse effect.

Stephen Hawking gave this answer to one of the questions chosen by the Starmus Festival, which since Monday in Canary joins science, music and art and has been closed this Saturday with a lecture by British physicist.

Best travel to the future than to the past

Hawking, that when you got to choose between traveling to the Big Bang or the future chose the second choice because, he said, you know what happened in the past, said that may have Earth-like planets but does not believe in the existence of UFOs.

Stephen Hawking does not believe there is a conspiracy of the United States Government to hide the evidence that UFOs exist and thus keep all the alien technology.

The mysteries never cease

In reply to another winner quiz Stephen Hawking said that the more more mysteries discovered there, so do not think that once the investigations are over, and explained that in his field of fundamental physics and cosmology implications of string theory are not understood, and not even know if it is correct.

He added that neither has any idea of ​​the nature of matter and dark energy, if particles, fields, or modifications of the theory.

Black holes are not “so black”

Stephen Hawking also joked and sent the message that the holes blacks “are not as black as the paint and can leave them” both outward as possibly in another universe, so he said that if someone feels they are in a black hole should not give up because no output.

During his talk on black holes Stephen Hawking said that black holes have an edge, called the event horizon, beyond which no return and falls for him.

Quantum black holes

Hawking also spoke in application of quantum mechanics, if a particle falls into a black hole or your partner may not fall, and in the second case is what gives rise to the radiation emitted by black holes.

The antiparticle falling into the black hole can be considered as a particle that is traveling to the past, Hawking said.

added that when a particle falls into a black hole information could be lost, which would be bad because during the last two hundred years have believed in scientific determinism.

Hawking mentioned Laplace, who said that if the state is known Universe in an instant the laws of science will be determined in the future, and believed that Laplace did not say that God does not exist but does not intervene to break the laws of science and that, he added, should be the position of every scientist.

The British physicist noted that according to Laplace need to know the position and velocity of all particles at all times in order to predict the future, but according to the uncertainty principle, the more precisely the position is much less know exactly may know the speeds, and vice versa.

Then he asked Hawking, how to predict the future accurately, and replied that it can predict the quantum state, something from which one can calculate both speed and position with high accuracy.

For Stephen Hawking, if determinism fails with black holes may fail on other issues.

indicated that from the outside of a black hole can not be sure whether or not there, which is always the possibility that there are no.

But I also wondered if it is possible to fall into a black hole and come out in another universe, and replied that in that case should have a hall to the other universe, but could not back

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