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Acoustic Hawking Radiation
What did we learn from studying acoustic black holes? by Renaud Parentani The study of acoustic black holes has been undertaken to provide new insights about the role of high frequencies in black hole evaporation. Because of the infinite gravitational redshift from the event horizon, Hawking quanta emerge from configurations which possessed ultra high (trans-Planckian)…
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Charlatan’s Who Use Graviton?
Are Gravity people Charlatan’s?:)I certainly don’t think so.:) well this is a good perspective with which one could move forward and explain it for us lay people here? :) Lubos Motl: The graviton is, on the contrary, an example of a correct derivation from semiclassical gravity – a legitimate approximate unification of GR and QM.…
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Unity of disparate Pieces
damptdweller: Even if you take the string theorists viewpoint that the energy may “leak” away into a brane instead of actually disappearing I think I’m correct in saying that you still need to ensure that energy is conserved regardless. Plato:While some might of thought it “dreamy,” there is a direct physics correlation to that leaking…
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Heaven’s ephemeral Qualities?
“Materialism: Basically, the view that everything is made of matter. But what is matter? Probably the most innocent and cheerful acceptance of it comes right at the start of materialism with Democratius of Abdera (in Northern Greece) in the fifth century B.C., for whom the world consisted entirely of ‘atoms’, tiny, absolutely hard, impenetrable, incompressible,…
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Dmitri Ivanovich Mendeleev: The Law of Octaves
Dmitri Mendeleev in 1897 Courtesy Edgar Fahs Smith Memorial Collection, Department of Special Collections, University of Pennsylvania Library Dmitri Ivanovich Mendeleyev (Russian: Дми́трий Ива́нович Менделе́ев listen ▶(?)) (8 February (O.S. 27 January) 1834 in Tobolsk – 2 February (O.S. 20 January) 1907 in Saint Petersburg), was a Russian chemist. He is renowned for being one…
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Strings and No_Sense?
Well for me, if theorists have mathematically created a vision of things, how is it possible not to have generalized their views on what they had learnt about the theories they talk about? “Shut up and Calculate” would definitely appeal to a lot math minded there at the forefront of Cosmic Variance. But really, how…
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More Quantum Gravity Comments
Aristotle: Commenced his investigation on the Wisdom of the philosphers. “Thales says that it is water” it is the nature of the arche, the originating principle. Water is the Nature of All Things” Now relax before you start assigning numerical values to the opening statement:) Might I see a greater context in the evaporation(decay), of…
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Anomalistic Features of Gold Fish and Ant World?
I was reading Mark Trodden’s blog called, “Orange Quark” for reading, and he pointed out the following article. In Praise of Hard Questions, by Tom Siegfried Geometric basis underlying science? I see this tendency of many to the Halls of records, museums, and whatever you like, to keep current for all us folks outside academia.…
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Blaise Pascal
Blaise Pascal (June 19, 1623 – August 19, 1662) Born in Clermont-Ferrand (France), the young Pascal was introduced to mathematics and physics by his father. So precocious was his talent in these disciplines that he published his innovative Essai pour les coniques [Essay on conics] in 1632, at only sixteen. In 1631, he moved to…
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Sylvester’s Surfaces
Figure 2. Clebsch’s Diagonal Surface: Wonderful. We are told that “mathematics is that study which knows nothing of observation…” I think no statement could have been more opposite to the undoubted facts of the case; that mathematical analysis is constantly invoking the aid of new principles, new ideas and new methods, not capable of being…
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The Holographical Mapping of the Standard Model onto the Blackhole Horizon
New paper that came out yesterday written by Gerard ‘t Hooft Interactions between outgoing Hawking particles and ingoing matter are determined by gravitational forces and Standard Model interactions. In particular the gravitational interactions are responsible for the unitarity of the scattering against the horizon, as dictated by the holographic principle, but the Standard Model interactions…
