TEHRAN, May 29 (Xinhua) -- An Iranian nuclear official said Monday that Tehran has conducted research into nuclear fusion, the state-run television reported.
"Iranian nuclear scientists are trying to catch up the advanced world in using nuclear energy through nuclear fusion," Sadat Hosseini, who runs the technical department at the Nuclear Research Center of Iran's Atomic Energy Organization, was quoted as saying.
Science & Technology
In an engineering breakthrough that is still to be seen, scientists have unveiled a blueprint to make an invisibility cloak, like the one worn by author J.K. Rowling's boy wizard Harry Potter.
A team of British and American researchers outlined the materials they say would be needed to make such a cloak in Thursday's online issue of the journal Science.
The Pentagon's Defense Advanced Research Projects Agency, or DARPA, sponsored the research because of its potential military applications in the field of stealth technologies.
A cloak made of a "metamaterial" wouldn't reflect light or cast a shadow.
A team of British and American researchers outlined the materials they say would be needed to make such a cloak in Thursday's online issue of the journal Science.
The Pentagon's Defense Advanced Research Projects Agency, or DARPA, sponsored the research because of its potential military applications in the field of stealth technologies.
A cloak made of a "metamaterial" wouldn't reflect light or cast a shadow.
Voyager 2 could pass beyond the outermost layer of our solar system, called the "termination shock," sometime within the next year, NASA scientists announced at a media teleconference today.
The milestone, which comes about a year after Voyager 1's crossing, comes earlier than expected and suggests to scientists that the edge of the shock is about one billion miles closer to the Sun in the southern region of the solar system than in the north.
This implies that the heliosphere, a spherical bubble of charged low-energy particles created by our Sun's solar wind, is irregularly shaped, bulging in the northern hemisphere and pressed inward in the south.
The milestone, which comes about a year after Voyager 1's crossing, comes earlier than expected and suggests to scientists that the edge of the shock is about one billion miles closer to the Sun in the southern region of the solar system than in the north.
This implies that the heliosphere, a spherical bubble of charged low-energy particles created by our Sun's solar wind, is irregularly shaped, bulging in the northern hemisphere and pressed inward in the south.
Scientists with the National Aeronautics and Space Administration are flying over the shrinking Arctic ice cap this summer in an effort to determine just how much the melting ice is contributing to the rise of sea level worldwide.
THE title of Heinrich Päs's latest paper might not mean much to you. To those who know their theoretical physics, however, "Closed timelike curves in asymmetrically warped brane universes" contains a revelation. It suggests that time machines might be far more common than we ever thought possible.
Making different sentences out of the same words was thought to be a unique feature of human language but scientists have now discovered syntax in monkeys.
A study of wild putty-nosed monkeys in Africa has found that they can mix different alarm calls to communicate new meanings to fellow members of a troop.
A study of wild putty-nosed monkeys in Africa has found that they can mix different alarm calls to communicate new meanings to fellow members of a troop.
Scientists have reached a landmark point in one of the world's most important scientific projects by sequencing the last chromosome in the human genome, the so-called "book of life".
Chromosome 1 contains nearly twice as many genes as the average chromosome and makes up eight percent of the human genetic code.
It is packed with 3,141 genes and linked to 350 illnesses including cancer, Alzheimer's and Parkinson's disease.
Chromosome 1 contains nearly twice as many genes as the average chromosome and makes up eight percent of the human genetic code.
It is packed with 3,141 genes and linked to 350 illnesses including cancer, Alzheimer's and Parkinson's disease.
Only time and money separate the current state of rocket propulsion science from the engine rooms of Star Trek's Starfleet, according to a university professor.
James Woodward, a history professor at California State University in Fullerton, presented his research into Mach-Lorentz thrusters Wednesday at the Future in Review conference here. Mach-Lorentz thrusters (MLTs), assuming they can be scaled up from lab tests, could provide a new source of propulsion that "puts out thrust without blowing stuff out the tailpipe," Woodward said.
James Woodward, a history professor at California State University in Fullerton, presented his research into Mach-Lorentz thrusters Wednesday at the Future in Review conference here. Mach-Lorentz thrusters (MLTs), assuming they can be scaled up from lab tests, could provide a new source of propulsion that "puts out thrust without blowing stuff out the tailpipe," Woodward said.
A group of Yale researchers studying the origin of irrational decision-making found that choosing impractically isn't a behavior exhibited only by humans. Our evolutionary cousins, capuchin monkeys, exhibit the same tendency with respect to loss aversion, or the tendency to strongly prefer avoiding losses rather than acquiring gains.
The findings, published in the Journal of Political Economy, indicate these biases are innate in primates and have existed since before capuchins and humans split 40 million years ago.
The findings, published in the Journal of Political Economy, indicate these biases are innate in primates and have existed since before capuchins and humans split 40 million years ago.
The human brain may have a built-in mechanism for keeping racially or politically distinct groups apart, a new Harvard study suggests.
U.S. researchers observed the brain activity of liberal college students who were asked to think about Christian conservatives. As they did so, a brain region strongly linked to the self and to empathy with others nearly shut down, while another center -- perhaps linked to stereotypic thoughts -- swung into high gear.
U.S. researchers observed the brain activity of liberal college students who were asked to think about Christian conservatives. As they did so, a brain region strongly linked to the self and to empathy with others nearly shut down, while another center -- perhaps linked to stereotypic thoughts -- swung into high gear.
Comment: Our Expert, Theoretical/Mathematical Physicist, Professor Arkadiusz Jadczyk tells us that this idea may have glimpses of truth, but it ignores the problems in the foundations of the quantum theory. Time loops are possible in many classical models, and there they lead to contradictions. Taking into account quantum theory may save us from these contradictions, but quantum theory is contradictory itself. So, we have one more hypothesis, but no real progress in our understanding how the universe works.