「Λ-CDMモデル」に関連した動画の一覧 |
 | Lambda CDM cluster simulation Cluster formation movie incorporating dark matter (CDM- Cold Dark Matter) and Dark energy (Lambda- Cosmological Constant) based on the cosmological parameters from WMAPs first year data. Video time lapse from z=10 to present, including a zoom into the center with rotation at present time. Radius= 6 Mpc (19.6 million light years). www-theorie.physik.unizh.ch For an explanation of z=10- hyperphysics.phy-astr.gsu.edu More info about Lambda-CDM model- en.wikipedia.org 2007年08月11日再生回数 1811 |
 | Craig, Krauss, and Lambda Cold Dark Matter Model William Lane Craig is finally brought to his senses about cosmological realities and arguments for the existence of "God" ;^/ Lawrence M. Krauss is an internationally known theoretical physicist and author of several bestselling books including "The Physics of Star Trek " His research interests include the interface between elementary particle physics and cosmology. He is foundation professor in the School of Earth and Space Exploration, a professor in the physics department and director of the Origins Initiative at Arizona State University. en.wikipedia.org krauss.faculty.asu.edu www.q2cfestival.com Funny and fascinating: 'A Universe From Nothing' by Lawrence Krauss, AAI 2009 www.youtube.com Lawrence Krauss Discussion (1/12) - Richard Dawkins www.youtube.com William Lane Craig is an American philosopher and theologian known for his contributions to the philosophy of religion, the philosophy of time, philosophical theology, and historical Jesus studies. He is currently a Research Professor of Philosophy at Talbot School of Theology, Biola University (a private, non-denominational, evangelical Christian, liberal arts university located near Los Angeles). William Lane Craig has used essentially the same failed arguments repeatedly. This footage comes from an old debate with Anthony Flew. Craig has modified an old cosmological argument (Kalām) that originated with al-Ghazali. I have edited the video for accuracy. Craig's uncorrected argument holds: 1.Whatever begins to exist ... 2009年12月16日再生回数 3316 |
 | SSE Talks - Physics in the Dark - James Beichler www.scientificexploration.org ----------------------------------- Physics is completely in the dark when it comes to that part of the universe consisting of Dark Matter (DM) and Dark Energy (DE). The word 'dark' in these titles refers to the fact that whatever the physical substance or concept 'filling' these regions of otherwise empty space happens to be, it does not interact electromagnetically except for the fact that the curvature of space-time in these regions causes gravitational lensing of passing light waves. The best known dark region is the halo that surrounds spiral galaxies and it seems to be constituted of 'something' that goes by the designation Lambda-CDM. While the concept of Lambda-CDM seems to account for whatever either 'appears' or does not 'appear' in galactic halos, its origin and nature is otherwise unknown. The term DM also covers the group of physical phenomena associated with the HDM which persists everywhere throughout the universe as does DE. The verified existence of DM and DE has plunged the scientific world into a 'crisis' state that seems to indicate fundamental physics is expanding ever more rapidly toward a new scientific revolution. Their very existence presents problems which cannot be solved automatically by quantum theory, either in the form of quantum vacuum energy or newly invented particles, but rather problems that are related to gravity theory as expressed by the general theory of relativity. Numerous suggestions and hypotheses ... 2011年05月05日再生回数 544 |
 | 24C3: Simulating the Universe on Supercomputers Speaker: Mark Vogelsberger The evolution of cosmic structure The evolution of structure in the Universe is one of the hottest topics in Cosmology and Astrophysics. In the last years the so-called $\Lambda$-CDM-model could be established also with great help of very large computer simulations. This model describes a Universe that consists mainly of dark components: 96% are made of dark energy and dark matter. Ordinary matter made up of baryons give only 4% to the total content of the Universe. The talk will present recent results with the main focus on computational methods and challenges in that field. A state-of-the-art computer code for running these calculations will be presented in detail. The talk will describe recent progress in the field of cosmic structure formation and will mainly focus on computational problems and methods carrying out such large simulations on the fastest Supercomputers available today. At the end of the talk I will also briefly discuss a new method we developed to access the dark matter structure in the Milky way to a scale that was just impossible some month ago with current Supercomputers. The talk will mainly focus on numerical techniques how to run such a simulation. As an example the state-of-the-art code Gadget (Springel, 2005) will be presented. This code was used to calculate the Millennium Simulation. It is at the moment the leading code for cosmological simulations. At the end of the talk a new method will be presented that increases ... 2011年02月21日再生回数 580 |
 | "Hard Science Fiction" : Free Energy - Cosmic Microwave Background Radiation : Analog Flux Coherence Epistemology / Research - By: (Me) Nicholas Ellis @ www.youtube.com/sn1pe352 WARNING : "Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense."- Buddha The Big Bang theory suggests that the cosmic microwave background fills all of observable space, and that most of the radiation energy in the universe is in the cosmic microwave background, which makes up a fraction of roughly 5×10-5 of the total density of the universe. The CMBR has a thermal black body spectrum at a temperature of 2.725 K, thus the spectrum peaks in the microwave range frequency of 160.2 GHz, corresponding to a 1.9mm wavelength. The CMB's discovery in 1964 by astronomers Arno Penzias and Robert Wilson was the culmination of work initiated in the 1940s. Crucially, the glow is almost but not quite uniform in all directions, and shows a very specific pattern equal to that expected if the inherent randomness of a red-hot gas is blown up to the size of the universe. In particular, the spatial power spectrum (how much difference is observed versus how far apart the regions are on the sky) contains small anisotropies, or irregularities, which vary with the size of the region examined. They have been measured in detail, and match to within experimental error what would be expected if small thermal fluctuations had expanded to the size of the observable space we can detect today. Although many different processes ... 2011年06月17日再生回数 443 |
