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How many dimensions are there? In the latest online poll of our Science fiction, science fact project you told us that you'd like an answer to this question. So we asked theoretical physicist David Berman to find out more. We also bring you a range of other Plus articles exploring the question, as well as two articles from FQXi who are our partners on this project. Happy reading! 
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Petters' research is focused on the development of mathematical theory of gravitational lensing. He is the leading author of the book, /Singularity Theory and Gravitational Lensing/.
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From
phys
In a new study, Sorli and Fiscaletti have shown that two phenomena of special relativity - time dilation and length contraction - can be better described within the framework of a 3D space with time as the quantity used to measure change (i.e., photon motion) in this space.
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Theory proposes objects in their lowest energy state can loop in the fourth dimension forever... What sounds like the title of a bad fantasy movie — time crystals — could be the next big thing in theoretical physics.
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Why does our universe look the way it does? In particular, why do we only experience three spatial dimensions in our universe, when superstring theory, for instance, claims that there are ten dimensions -- nine spatial dimensions and a tenth dimension of time? Japanese scientists think they may have an explanation for how a three-dimensional universe emerged from the original nine dimensions of space. They describe their new supercomputer calculations simulating the birth of our universe in a forthcoming paper in Physical Review Letters.
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As the media spotlight shines on the Large Hadron Collider in Geneva and its high-profile hunt for a certain boson, other scientists are pressing forward with experiments that are just as challenging — and just as potentially transformative. These often unsung researchers are willing to spend years or even decades getting a finicky instrument to run smoothly; setting up proper controls to minimize spurious results; beating back noise that threatens to swamp their signal; and striving for an ever more painstaking level of precision — a determination and single-mindedness that borders on heroic. Here, Nature describes five such quests.
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Scientists at the Scientific Research Centre Bistra in Ptuj, Slovenia, have theorized that the Newtonian idea of time as an absolute quantity that flows on its own, along with the idea that time is the fourth dimension of spacetime, are...
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When you were a kid, did you dream of becoming an astronaut? Or maybe a ballerina? Assuming you didn’t pursue either of those careers, are those versions of you out there now, orbiting and pirouetting in other dimensions?
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Just because there are four dimensions doesn't mean there's a "fourth dimension"
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From
io9
Physics is defined by its symmetries, from thermodynamics laws like the conservation of mass and energy, to the principle that the universe is basically the same all over.
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This new paper demonstrates, for the first time, that our 3-D space appears naturally … from the 9-D space that string theory originally has,” says Jun Nishimura of the High Energy Accelerator Research Organization in Tsukuba, Japan. He and his colleagues will publish their findings in an upcoming issue of Physical Review Letters.
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A group of three researchers from the High-Energy Accelorator Research Organization (KEK), Shizuoka University and Osaka University has for the first time revealed the way our universe was born with 3 spatial dimensions from 10-dimensional...
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![[VIDEO] What It’s Like to Live in a Universe of Ten Dimensions | Science News | Scoop.it](https://img.scoop.it/n8Hw_2J5d-ulSoALvxf9tzl72eJkfbmt4t8yenImKBVvK0kTmF0xjctABnaLJIm9)
