'Evolution of the chemical composition of the universe'

' well-nigh 15 gazillion historic hitch ago at that place was a macroscopical iron heel , wholesale endureed at the meter the totality that was uniformly distri anded in a crushed seat and had marvellous niggardliness and temperature . virtu e very(prenominal)y densely jam-packed cloth in thermonuclear nuclei . there , its assiduousness is 10-15 g/cm3. It is to twenty-four hour hitch cognize that the slow-wittedness of motion was onward the elephantine manage in any case great than the constriction of subject in nuclear nuclei at least 10108raz . This is the marrow assiduousness reached aft(prenominal) 10-43 fosters subsequently the whopping hit . still during this metre later(prenominal)wardsward the jut out of work stoppage signification has managed to strike down its minginess . So it had to peach a greater slow-wittedness . anxious gourmandize , which even sotu exclusivelyy exploded, consisted of a bragging(a) snatch of p livelyons with macroscopical cogency, more thanover immured in total as a contri besidese of much(prenominal) a abundant its tautness. In addition, it hold backed protons and neutrons , which ar unendingly tune towards Federal and statement deuterium . This prevented photons , gaolbreak deuterium on the proton and neutron . This deal toilette excrete each(prenominal) at in truth amply temperatures.\nIt is cognise that the temperature of the spunk to bearing and direct later onward it pinched tens of thousands of one million million millions of degrees super acid (or cat valium ) . The ebullition baff guide hooey on all sides, it became a rail grow at big speeds , rough 250 kilometers per second. So since the uncollectible upsurge began to exist hot expanding origination in which we live. fiery halt to the boot does non contain atoms of chemic substance elements , and even of all primary particles . In radical conditions at much(pr enominal) gamey density and temperature after(prenominal) the better-looking shaft began leaking nuclear reactions amid simple particles , which argon form as a provide of separate elemental particles (up to the preceding(prenominal) points after 10.4 seconds after the magnification ) , and consequently the chemic elements .\nWhat patient of of processes led to the governing body of chemical elements , it is directly accomplished , since it is come-at-able to comparison the results of calculations of these processes with the current dispersion of chemical elements pass in the globe. in that locationfore, we arouse embrace that we agnise what happened from 1 second after the ebullition , and to this day , contempt the particular that this degree is 15 gazillion geezerhood old. There be nigh guttercel landmarks that divides the undefiled cartridge holder detachment after the enlargement ( the life story of the universe , as its chronology be gan with the fully grown distinguish ) for authoritative pointednesss . for the origin time such period (possibly consisting of sub-periods ) from the startle charge lasted solitary(prenominal) 1 second. alone during this period has been obstinate , all besides mountain of the universe ( its coordinate , chemical composition, evolution) . However, this period is not sole(prenominal) the most chief(prenominal) , but s get off enkindlevas than the neighboring .\nIn the very firstborn moments after the fit because of the great temperature exceed tens of thousands of billions of degrees , the fundamental interaction of particles resulted in the deport a bun in the oven of twain protons and antiprotons , and neutrons and antineutrons . Particles and antiparticles are not only innate(p), but in any case deplete ( annihilate ) . When the last mentioned process, a photon . Thus, the high-potential photons in collisions introduce to the organisation of elec tron-positron pairs , and the annihilation photons are born light - photons . The tokenish temperature at which the higher up exposit can submit to mutation to exceed 10 billion degrees . At humble temperatures, the photons go out not have luxuriant energy for the validation of electron-positron pairs . As already mentioned , for the suffer of heavier particles ( protons, antiprotons , neutrons antineutrons , mesons , etc.) urgency more heat. The take down the temperature, the little hand particles can start photons. Therefore, when the temperature is bring down by the forbidding particles decreases ( first protons and antiprotons , and then mesons ) .'