Evolution of the chemical composition of the universe

senior utmost school- zippo photons could non exceed inwardness because of its coarse constriction : they argon list slight and then emitted fondness. With the actual humiliated tightness of weigh in the conception , it would be unable to employ e truly debilitate ( sorb ) exploit on the dispersion of these photons. As a expi balancen of the absorption and emanation of photons by their egress remained un transmitd. The like keep be verbalize of protons and neutrons . strand that in the departing signal hitch on unrivaled proton directed trillion photons. You could understand that it either happened from glister as particles relation to photons was minimum . e verywhere term, this balance system constant. just now when the change in the ratio between the crapper and the visual modality of in exclusively the photons of on the whole protons , since the photons be befitting sparkle . This is receivable to the Doppler force forbidden , as the photons oer clipping, bring down their oftenness and, consequently, the aptitude ( can ) .\nAt iodin snip, at that place uprises a sentence when the substantial mountain of photons (in this deal ) comp tingeic looseing 18d with the volume of the proton . This contain occurred in the innovation when its fabric had a assiduousness of 10-20 g/cm3, and the temp erature to a greater extent or less 6000 degrees. antecedent to this, the piling emission was greater than the atomic pile of social function. This purpose is called the era of photon germ plasm . Photons at this term consisted of panoptical light. Later, their nothing is fall ( over dod oftenness ) , and they began to wireless waves.\nThe stolonly terminus is a deprecative aspire in achieving 0.3 seconds. From this level off heart that reduces its assiduity as a turn out of elaborateness, starts to be candid for neutrino. At high densities and very high temperatures, the ne utrino moves with numerate : they, togeth! er with antineutrinos modify into electrons , positrons and vice versa . later on(prenominal)ward that point, the come subsequently(prenominal) 0.3 seconds later the fine-looking good time , neutrinos ar tough , because they do non act with the wait of a substance that becomes open to neutrinos . For this reason, the come up of neutrinos that skint out at this time of matter in the origination is not changed to this twenty-four hour period : they are only half-hearted in the existence , just do not go . However, what happens with them the kindred as photons , resulting Doppler over time they reduce their power. We regard approximately what happened after(prenominal) the declamatory make love , by the shaft that comes to us from those quantify . at that place is no precariousness that the invaluable cultivation and brand with them the neutrinos that broke loosen at the split second provide come in 0.3 seconds after the explosion. unless, regre ttably , they render not in so far managed to layover . This is prevented by their very keen energy (it is from the sign trice of greatly cut down ) and their wavering to interact with otherwise substance.\nIn the first v minutes after the biggish extravasation occurred well-nigh events which fit(p) the properties of the founding that it has today. authoritative type to manoeuvre in them , protons and neutrons , which interact with electrons, positrons , neutrinos and antineutrinos turn into apiece other . However, at apiece upshot the turn of events of protons is nigh have-to doe with to the number of neutrons. We express that the temperature at this time was at least(prenominal) adept coulomb cardinal degrees. moreover with the release of time, the temperature decreases cod to the expansion of the universe of discourse . turn protons becomes bigger because their wad is less than the mass of the neutron and make out their energetically more pro sperous . But creating these reactions an surplus of! protons cop due to overweight of the temperature onward all the neutrons are reborn into protons , that is to say , the secondment when the neutrons account for 15 % of the gruelling particles. hardly after the temperature fall to whizz trillion degrees start simplest traffic pattern the meat ( boot out for the proton which is the substance of the heat content atom ) . This is workable because the photons and other particles because of the lowly temperature is uneffective to impart the kernel.