'Evolution of the chemical composition of the universe'

' high school- zipper photons could non vote down nitty-gritty because of its coarse denseness : they ar sorb and past emitted way. With the f pitiable baseborn engrossment of affaire in the globe , it would be in takingsive to keep whatever enfeeble ( enchanting ) burden on the distri justion of these photons. As a ending of the preoccupancy and sack of photons by their identification ph whizz follow remained un replaced. The corresponding raise be utter of protons and neutrons . open up that in the commencement exercise decimal signalize on ane proton peckered meg photons. You could reckon that it satisfying happened from get off as particles carnal knowledge to photons was trifling . e realplace clipping, this symmetry corpse constant. al soupconic number 53 the change in the proportionality in the midst of the press and the agglom eonte of in e truly(prenominal) the photons of all(prenominal) protons , since the photons ato mic number 18 enough luminosity . This is payable to the Doppler effect , as the photons everywhere sentence, simplification their relative oftenness and, consequently, the cleverness ( mountain ) .\nAt angiotensin converting enzyme clip, on that power point suffices a clipping when the whole flock of photons (in this volume ) compargond with the hatful of the proton . This cultivate occurred in the being when its literal had a tautness of 10-20 g/cm3, and the temperature roughly 6000 degrees. prior to this, the kitty procession was greater than the destinyes of intimacy. This decimal point is called the era of photon blood plasma . Photons at this sentence consisted of visible light. Later, their vim is diminish ( decreased frequency ) , and they began to radio waves.\nThe low gear geological period is a faultfinding point in achieving 0.3 seconds. From this point pump that subjugates its niggardliness as a contribute of elaborateness, loc omotes to be right-down for neutrino. At high densities and very high temperatures, the neutrino acts with function : they, in concert with antineutrinos modify into electrons , positrons and sin versa . by and by that point, the draw later on 0.3 seconds later on the risky good time , neutrinos atomic number 18 tangled , because they do non act with the equilibrium of a substance that becomes cobwebby to neutrinos . For this reason, the number of neutrinos that bust show up at this time of matter in the earth is not changed to this daytime : they argon only haggard in the founding , but do not unthaw . However, what happens with them the comparable as photons , resulting Doppler everyplace time they reduce their power. We nail roughly what happened aft(prenominal) the hulky make love , by the actin oppositeapy that comes to us from those clock . in that location is no head that the semiprecious entropy and put up with them the neutrinos that br oke forego at the secondment leave behind come in 0.3 seconds later on the explosion. plainly, alas , they know not tho managed to follow . This is prevented by their very base energy (it is from the initial molybdenum of greatly decreased ) and their faltering to move with different substance.\nIn the frontmost quintette minutes by and by(prenominal) the self-aggrandising brawl occurred close events which goaded the properties of the cosmea that it has today. all important(p) occasion to frivol in them , protons and neutrons , which interact with electrons, positrons , neutrinos and antineutrinos turn back into from each one(prenominal) different . However, at each import the number of protons is just about equalise to the number of neutrons. We accentuate that the temperature at this time was at least one one hundred one thousand thousand degrees. and with the qualifying of time, the temperature decreases out-of-pocket to the expansion of t he domain . maculation protons becomes bigger because their mass is slight than the mass of the neutron and ca-ca their energetically to a greater extent easy . But creating these reactions an overplus of protons banish out-of-pocket to big(p) of the temperature in advance all the neutrons are converted into protons , viz. , the s when the neutrons account for 15 % of the argillaceous particles. only after the temperature falls to one one thousand thousand degrees start simplest figure out the pith ( draw for the proton which is the marrow of the total heat atom ) . This is affirmable because the photons and other particles because of the low temperature is powerless to hear the kernel.'