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Brian Greene: Why is our universe fine-tuned for life?
At the heart of modern cosmology is a mystery: Why does our universe appear so exquisitely tuned to create the conditions necessary for life? In this tour de force tour of some of science’s biggest new discoveries, Brian Greene shows how the mind-boggling idea of a multiverse may hold the answer to the riddle. Brian…
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WHAT IS YOUR FAVORITE DEEP, ELEGANT, OR BEAUTIFUL EXPLANATION?
Scientists’ greatest pleasure comes from theories that derive the solution to some deep puzzle from a small set of simple principles in a surprising way. These explanations are called “beautiful” or “elegant”. Historical examples are Kepler’s explanation of complex planetary motions as simple ellipses, Bohr’s explanation of the periodic table of the elements in terms…
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The Smoking Gun
One string theorist even went so far to conclude that a string theory calculation of Kaluza-Klein modes was the “smoking gun” that proved our theory was the same as the string theory that string theorists had already been studying.Warped Passages: Unraveling The Mysteries of the Universes Hidden Dimensions by Lisa Randall Pg 436, Para 4…
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Perspective of the Theoretical Scientist
Most people think of “seeing” and “observing” directly with their senses. But for physicists, these words refer to much more indirect measurements involving a train of theoretical logic by which we can interpret what is “seen.”– Lisa Randall There are certain advantages to the theoretical perspective that can best portray the concepts of the world…
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The Elixir of the Bee Community
You should know that that the names of the Bee people have their names protected, to protect the community at large. Some larger human species, like to use the benefits of this society, without recognizing the constructive efforts that goes into this elixir Production. Marc D. Hauser: We know that that kind of information is…
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Heralded from the 21st Century: String Theory
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Where are my keys?
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Gravity and Electromagnetism?
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Lisa Randall on Xtra Dimensions
In physics, Randall-Sundrum models imagine that the real world is a higher-dimensional Universe described by warped geometry. More concretely, our Universe is a five-dimensional anti de Sitter space and the elementary particles except for the graviton are localized on a (3 + 1)-dimensional brane or branes. The models were proposed in 1999 by Lisa Randall…
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Beyond Spacetime?
As well as bringing the accelerator’s counter-rotating beams together, LHC insertion magnets also have to separate them after collision. This is the job of dedicated separators, and the US Brookhaven Laboratory is developing superconducting magnets for this purpose. Brookhaven is drawing on its experience of building the Relativistic Heavy Ion Collider (RHIC), which like the…
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Lisa Randall’s Theoretical Insights
