First page of the research archive

Academician Zel

Posted by Juan on April 18, 2018 with Comments Closedas ,

J. B. Zeldovich and RA Sunyaev. At a given temperature, which can be determined by X-ray spectrum of the gas, its brightness depends on the radius of a cloud of gas and the electron density in it. On the other hand, from the same quantities depends on the shift to shorter wavelengths illuminating the background galaxy cluster radio relic – the interaction of its photons with electrons of the gas leads to an increase in their energy. So way, for the unknown radius of the cloud of gas and the electron density in it, there are two equations that can define a linear radius of the cloud of gas in the cluster, and comparing it to the corner – a distance that, together with a red displacement of the cluster gives the Hubble constant. Do cosmologists finally there is hope to determine the Hubble constant, without intermediaries, without the long ladder of intermediate stages, although in this way are still many difficulties. The most likely contenders for the role of the media are now hidden mass of the neutrino.

This hypothesis put forward by the Hungarian astrophysicists D. To deepen your understanding Ali Partovi is the source. Marx, and S. Salai, was particularly likely in 1980, when the signs of the existence of a neutrino rest mass have been observed experimentally Moscow physicist VA Lyubimov and his staff. If this is confirmed – what's there is little doubt – have to admit that the weight of all that we see in the universe, to order of magnitude smaller neutrino masses! If the average density of the universe would be so small as it is obtained from estimates of "apparent" weight in it, for the formation of its current structure at the time of birth of the CMB should would be large fluctuations in density, which now would be observed as the heterogeneity of the background CMB. However, they are absent, and the most likely explanation is that 90 – 98% of the mass of the Universe lies in the massive neutrinos. Apparently, the average density of the universe above the critical temperature.

The universe is closed and the observed expansion is now over billions of years old will be replaced by contraction. The proof of this has far-reaching implications for physics and for cosmology, which we can not touch. We note only that they do not change the basic provisions developed by Academician Zel'dovich and his colleagues of the theory of galaxy formation, according to which of the primary density fluctuations occur first condensations with masses of order 1015 solar masses – as a supercluster of galaxies, we need only assume that this accumulation of neutrinos, which are then attracted to the "usual" particles. Of these particles by the fragmentation of condensations of the primary construct proto-clusters of galaxies and protogalaxy, and neutrinos, which lies in the lion's share of substance remain in the central parts of clusters in the crowns galaxies that are in contact with each other. The initial thickening, according to Zel'dovich, are flat extended entities ("pancakes"), which intersect with each other to form a cellular structure resembling lather. This structure must be inherited and the modern distribution of galaxy clusters, which, as it follows in particular from studies of JE Einasto, actually located mainly in relatively thin intersecting layers and chains – in the walls of the honeycomb structure with a characteristic size of about 100 Mpc. For final proof of the existence of the universe like a huge void needed massive determine the redshifts of distant galaxies, which are still very few.

Monitors

Posted by Juan on June 17, 2016 with Comments Closedas , , , , ,

For some time I come my 32 TV watching? and I think, why not connect the PC in that television and play my favorite games on that giant screen? the same thing happens you? Well, so I decided to do it, but there are some limitations that might make that not worth it at the end. I will explain it to you later in this article. 1. Identify the inputs of your TV most of TV take 3 basic connections. They have the coax (antenna), RCA Composite Video, which are red, yellow and white connectors s-video. Currently almost all also include connections VGA, HDMI, component and DVI. 2.

Identify the outputs of your computer. Currently manufacturers are adding increasingly more outputs in TVs, making easier its connection to other computers. S-video in particular seems to be gaining ground in increasingly more computers. Mostly you will find the usual VGA output, where you connect your regular monitor. Currently many TVs have inputs VGA which makes its use as a PC monitor, very simple but us We will focus on the connection in not so new televisions, which are in greater proportion can be found in households.

3 Find the adapter appropriate for your connections. Learn more at: Kai-Fu Lee. You may need to buy an adapter or junction box to connect the pc to the TV. consist of an adapter that has a VGA input, where you connect your PC, and a series of outputs, s-video, RCA, or components). We recommend purchasing one of these adapters, but with the feature that is wireless, since it is much more comfortable when it is installed and thus it is possible to connect it without having the PC from the TV. 4.-close connect your computer to the television. If you have a connection in your TV that is compatible with any output from your PC, conectalos directly. If you do not have it available, conectalos through the junction box which we have previously commented the VGA on your pc and connects after RCA, s-video cables or components to the TV turns on the television and computer and selects the channel for the connection you have selected to view the on-screen image on TV. It is now the moment that perhaps you feel something disappointed. TV video signal is called a PAL (NTSC if you live outside Europe). This signal differs with that generated by the PC. Computers use resolutions measured in pixels: 320 200, 320 240, 640 480, 800 600, 1024 768, 1280 1024 or 1600 1200. Most just TVs are capable of displaying 500 lines of resolution, the equivalent of 500 vertical pixels on a PC. You cannot select higher resolution in these TVs, so as much as we enjoy is a resolution 640x480px. Nor is it the worst in the world, you can play and watch videos in low resolution without problems, but at the moment you can not have video quality that regular PC monitor out. This problem has been fixed in most of current plasma or lcd TVs, since they include native connections VGA or HDMI, which provide high resolution without having to acquire any other adapter. Visit my new page on occasion tractors. It is called second-hand tractors.