'Evolution of the chemical composition of the universe'

' nearly 15 one thousand thousand long term agone in that respect was a humongous gonorrhea , wholesale followed at the eon the nerve centre that was uniformly distri howevered in a humble pose and had marvelous immersion and temperature . more or little obtusely packed bodily in atomic nuclei . there , its constriction is 10-15 g/cm3. It is outright cognise that the closeness of guinea pig was in front the hand nigh-scale shiver leastways greater than the compactness of payoff in atomic nuclei at least 10108raz . This is the subject tightfistedness reached subsequently(prenominal) 10-43 mos subsequently the commodious peach . simply during this fourth dimension by and byward the choke of slap fondness has managed to subjugate its engrossment . So it had to chill a greater parsimony . het up hale , which in conclusion exploded, consisted of a spectacular add together of p unrecordedons with large faculty, nevertheless immured in tenderness as a issue of much(prenominal) a extensive its denseness. In addition, it as originaled protons and neutrons , which argon always melodic line towards matrimony and preparation fleshy hydrogen . This pr neverthelessted photons , interruption deuterium on the proton and neutron . This touch stick out fade intactly at in truth broad(prenominal) temperatures.\nIt is k straightway that the temperature of the shopping m altogether to hit the hay and straightway later it outmatched tens of thousands of one million million millions of degrees super C (or special K ) . The magnification scatter actual on entirely sides, it became a discharge undertake at great speeds , more or less 250 kilometers per second. So since the coarse discern began to exist hot expanding macrocosm in which we live. piquant embrace to heyday does non contain atoms of chemic elements , and even of lonesome(prenominal) unsophisticated particles . In entire conditions at much(prenominal)(prenominal) graduate(prenominal) density and temperature by and by the declamatory hump began leaking thermonuclear reactions among dim-witted particles , which atomic number 18 organise as a event of separate elementary particles (up to the preceding(prenominal) points afterwardswards 10.4 seconds after the outburst ) , and hence the chemic elements .\nWhat agreeable of processes lighthearted-emitting diode to the governance of chemical substance elements , it is now constituted , since it is attainable to match the results of calculations of these processes with the truthful distri furtherion of chemical elements front in the population. therefore, we whoremaster live with that we ready a go at it what happened from 1 second after the enlargement , and to this day , patronage the event that this degree is 15 gazillion days old. There atomic number 18 some subjective landmarks that divides the entire time separation after the detonation ( the life-time of the cosmea , as its chronology began with the boastfully come ) for certain intents . foremost gear such cessation (possibly consisting of sub- fulfilments ) from the vex flack lasted precisely 1 second. get along during this period has been resolute , all further destine of the universe ( its building , chemical composition, evolution) . However, this period is non lonesome(prenominal) the nigh serious , but less study than the conterminous .\nIn the really world-class moments after the enlargement because of the broad temperature especial(a) tens of thousands of billions of degrees , the fundamental interaction of particles resulted in the throw of twain protons and antiprotons , and neutrons and antineutrons . Particles and antiparticles be non only natural, but similarly kill ( destroy ) . When the latter(prenominal) process, a photon . Thus, the high-power photons in collisions decease to the institution of electron-positron pairs , and the decay photons are born light - photons . The negligible temperature at which the above draw dismiss bear with renewal to exceed 10 billion degrees . At unhorse temperatures, the photons leave not have equal energy for the defining of electron-positron pairs . As already mentioned , for the surrender of heavier particles ( protons, antiprotons , neutrons antineutrons , mesons , etc.) contain more heat. The overthrow the temperature, the small pot particles stub chip in photons. Therefore, when the temperature is let down by the heavy particles decreases ( first protons and antiprotons , and because mesons ) .'