Mostrando las entradas con la etiqueta scientist. Mostrar todas las entradas
Mostrando las entradas con la etiqueta scientist. Mostrar todas las entradas

lunes, 8 de junio de 2015

La vida es sueño: científicos demostraron que la realidad no existe hasta que es observada / Life is a Dream: scientists demonstrated that reality does not exist until it is observed


Un experimento, realizado por científicos australianos, demostró que la realidad no existe sino hasta que la medimos.
Se trata del trabajo desarrollado por un equipo de físicos de la Universidad Nacional Australiana, que puso en práctica el experimento de elección diferida de John Wheeler para demostrar que todo depende de la medición. El profesor asociado en la Escuela de Investigación Física e Ingeniería de la UNA, Andrew Truscott, explicó en otras palabras que "a nivel cuántico, la realidad no existe si no se la está mirando".
El experimento consiste en un objeto que se mueve, al que se le da la opción de actuar como una partícula, o como una onda. Luego, el experimento pregunta, ¿en qué momento este objeto toma la decisión de ser una cosa o la otra?
Si se deduce desde el sentido común, el objeto debería ser, o bien una onda, o bien una partícula, más allá de cómo sea medido. Sin embargo, la física cuántica sostiene que una onda, o una partícula, son comportamientos que dependen tan sólo de cómo se mide el objeto al final de su trayecto. Esto es precisamente lo que lograron demostrar los científicos australianos.
Para ello, en primera instancia atraparon una colección de átomos de helio en estado de suspensión, lo que se conoce con el nombre de "condensado de Bose-Einstein"; más tarde los expulsaron, hasta que quedó solamente un átomo. En segunda instancia, se dejó pasar al átomo a través de un par de rayos láser, propagados en direcciones opuestas, formando un patrón de rejilla.
Aleatoriamente, se añadió una segunda rejilla de luz para volver a combinar los caminos, lo que llevó a una interferencia constructiva o destructiva, del mismo modo que si el átomo hubiera seguido ambos caminos. Cuando la segunda rejilla no era añadida, tampoco se verificaba una interferencia, como si el átomo hubiera escogido sólo un camino.
Sin embargo, el número aleatorio que determinaba si se añadía la segunda rejilla, o no, se generaba únicamente una vez que el átomo terminaba de pasar por la encrucijada. Si uno opta por creer que el átomo tomó un camino en particular, esto implica que una medición futura está afectando el pasado del átomo. Al respecto, Truscoot señaló: "Los átomos no viajaron de A hacia B. Fue solo cuando se midieron al final del viaje que existió el comportamiento ondulatorio o de partícula".

fuente: http://mx.tuhistory.com

sábado, 30 de mayo de 2015

Scientific reveals that size are extraterrestrials

Aliens in movies are always shown as small creatures, but in reality could be much larger.

The scientific Fergus Simpson University of Barcelona, ​​calculated the minimum size required for that to exist intelligent life on other planets to survive.

According to his calculations, the aliens would have to weigh and measure the equivalent of a medium polar bear 650 lbs y 6 a 8 pies (300 kilograms y 2 a 2.5 metros) or more.





The expert came to this conclusion by applying a mathematical formula, assuming that aliens obey the same laws of conservation of animals on Earth.

Simpson calculations were achieved based on the minimum size necessary for life outside our planet can be made.

Therefore, throughout the universe, such as Earth, is likely smaller than large animals, says Simpson, since the number of planets inhabited by relatively small animals outnumber the number of worlds dominated large, chances are that we are on a planet with relatively small animals-and ourselves, probably one of the smallest intelligent beings.

jueves, 28 de mayo de 2015

The universe in which we live is a simulation on a supercomputer?

Although it seems science fiction, a group of physicists at the University of Washington has now succeeded in designing a test to prove if indeed we live in simulated on a computer universe.





The idea that humanity could be living inside an artificial universe came in an article by Nick Bostrom, a professor of Philosophy at the University of Oxford. The work was published in 2003 in the journal Philosophical Quarterly and since then has not left anyone indifferent.

A group of physicists from the University of Washington are developing a test that could take place in the near future and could help to resolve the question of whether or not actually live inside a computer simulation. 

To do Professor Martin Savage considers it necessary to model only a small part of our world, ie also create a sufficiently large simulation.

Starting from the basic laws of physics that govern the universe have been able to simulate relative success tiny portions thereof on a scale of a billionth of a meter, slightly higher than an atomic nucleus.

"If you get a simulation big enough it would emerge much like our universe," Savage says. Therefore, according to the scientist, it's just a matter of looking at the universe we live in an analog "signature" that they are using in our small-scale simulations.

Something also to Savage and his colleagues, is perfectly feasible. In fact, they suggest that the "signature" that would prove that ours is an artificial universe could appear as a limitation on the power of cosmic rays (the radiation reaching us from distant stars and galaxies).

According to the idea of ​​Savage, the highest-energy cosmic rays could not travel on the edges of the artificial grid that simulates space-time in a hypothetical computer model, but should travel diagonally, so that their interactions would not be equal in all directions, as expected. If it can be shown that such "unnatural" limitation exists, there would be no question that we live within a simulation.


source(in spanish):http://actualidad.rt.com/

miércoles, 20 de mayo de 2015

Scientist Michio Kaku surprised with finding irrefutable evidence: God does exist



The American physicist and science writer, one of the most respected in the field of quantum physics luminaries, ensures that there is an unknown force that governs everything.



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image: http://www.flickr.com/people/34458623@N03
The renowned American theoretical physicist Michio Kaku, famous for making the revolutionary string theory (fundamental physics model that assumes that seemingly specific material particles are actually "vibrational states") recently caused a small tremor in the community then scientist who claimed to have found evidence of the existence of an intelligent man unknown force that governs nature that is, something quite similar to the concept that many have of God as creator and director of the universe entity.

In reaching this conclusion Michio Kaku used a new technology created in 2005 that allowed him to analyze the behavior of matter at the subatomic scale, relying on a "primitive semi-tachyon radio." Tachyons, of course, are all those hypothetical particles able to move at superluminal speeds, ie, are theoretical particles able to "take off" the matter of the universe or the vacuum contact with it, thus leaving the matter in its purest form, totally free from the influences of the world around them.
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According to the physical, observing the behavior of these tachyons in several experiments, concluded that humans lived in a kind of "Matrix", ie, a world governed by laws and principles conceived by a kind of great smart architect . "I have concluded that we are in a world made by rules created by an intelligence, not unlike a favorite computer game, but of course, more complex and unthinkable," said the scientist.

Michio Kaku added, "analyzing the behavior of matter at the subatomic scale, hit by the pitch radius semi tachyon for the first time in history, a tiny point in space, totally free of any influence of the universe, matter, force, or law, is perceived in an unprecedented way absolute chaos. So, what we call chance no longer makes more sense, because we are in a universe governed by established rules and hazards not determined by universal plane. This means that, in all probability, there is an unknown force that governs everything, "said the scientist".

Michio Kaku added, "Someone did Einstein once the big question: Is there a God? And Einstein replied that, first, to be a scientist you have to specify well what is understood as God. If you understand God as a figure that is prayed, a figure that gives and takes part, then the answer is no. But he believed in a God represented by the order, harmony, beauty, simplicity and elegance, the God of Spinoza. The universe could be chaotic and ugly, but instead is beautiful, simple and governed by simple mathematical rules.

domingo, 10 de mayo de 2015

A scientist says can live 150 years





A scientist says he expects to live to 150 after uncovering the secrets of how to slow down the ageing process.

Dr Alex Zhavoronkov, an anti-ageing expert, believes medical advances and knowledge of lifestyles will lead to a far longer life expectancy than has been seen to date.

He is following a strict regime of regular exercise combined with drugs and supplements and regular health checks, while shunning marriage, children and material assets to focus on anti-ageing research instead.

A director of the UK-based Biogerontology Research Foundation think tank, which is dedicated to longer life and improving the health of the elderly, Dr Zhavoronkov remains confident that his lifestyle will allow him to reach the 150-year milestone.

He also makes sure he is administered with vaccines as soon as they are available, according to The Sunday telegraph, while monitoring his blood biochemistry and cell counts.

'All of the supercentenarians alive today lived through tough times, when no antibiotics were available and our understanding of human biology was not that far from the Stone Age,' he said.

'I think that in two to three years we will have effective pharmacological solutions based on already approved drugs that will help people remain younger and healthier until other advances in regenerative medicine and gene therapy become available.'

According to the Office for National Statistics, a boy born in the UK today is expected to live to 78.8 years and a girl to 82.8 years. 

Many health experts think most people can exceed that by walking regularly, cutting down on fat, sugar and salt in their diets and using existing drugs such as statins.In fact, Austrian researchers said a few weeks ago that old age begins at 74, such has been the advancement in medicine and health. 

Source and image:   http://www.dailymail.co.uk/sciencetech/article-3056223/Growing-old-gracefully-twice-long-Scientist-believes-unlocked-key-slowing-ageing-process-expects-live-15