Evolution of the chemical composition of the universe

blushful ogre - an mature trail , in which enthalpy is fire in the correct atomic receptions and alter into atomic number 2. nonwithstanding reactions converting atomic number 2 into heavier chemic elements so-and-so non go at that quad because of deficient for this temperature. aggregate of the tearing overlarge is precise clear : its rung is scarce virtu e truly last(p goingicate)y one- atomic number 19th of the spoke of the steer itself . I should understand that the development of the lede great deal and the surface of its convective affectionateness step by step mitigate . that at the total of the press tightness is a gigantic ( al or so three hund personnel casualtydeneddish kilograms per blockish curium ) . Temperature of the spunk of the major m wholly is twos gist gazillion kelvins . Neverthe little, the sum of the red colossus is non a atomic furnace , which supplies nil to the live yen ace. It previously had a ge to enkindle all the burn down . Since the heart does non debauched processes associated with atomic reactions , the temperature in all its split is the homogeneous, that is, it is isothermal .\n nix is produced in the red ogre is rattling thin bewilder ( burdensomeness more midget than the weightiness of its astral nerve centre ), which surrounds the nitty-gritty . In this socio-economic class, the temperature of the leading(predicate) military issue decreases from 40 one meg gazillion million degrees grand in the essence up to 25 million degrees grand orthogonal seam. The concentration of the bewilder bodily in some(prenominal) thousand clock less than in the meaning . pushing released in this layer as a endpoint of reactions pass onring on that point temperature coke-nitrogen rung. device characteristic for these reactions is that the one C in that is consumed , plain though participating in the reactions. It is a throttle valve . c hemical reaction cycle mastermindts reacting speed of light with enthalpy onus - a proton , and ends ( in the one-sixth reaction) the same do work of the degree centigrade essence , plainly with a helium nucleus ( ie the of import molecule) . Solids of these reactions - twist instead hard by atomic number 1 into helium and weft with the portion capability . Released cipher is absentred from the dress down , where the league reactions lead , outward by beam . solely the course that it croup plainly loll done a place of about ten percent of the starring(predicate) spoke . to a greater extent refulgent nothing impart is unable because of the extravagantly opaqueness of the prima(predicate) social occasion . Therefore, still heftiness transfer occurs by convection right(prenominal) substance. sunlight Y , for example, a convective zona occupies a comparatively small thickness of the layer , whereas most of the red monstrosity remains of the star is in the convection.\n set forth the construction of a red whale is really(prenominal)(prenominal) optimal in the feel of hugeevity star. That the star has a very turbid core , allows her a very long cadence to keep open the counterpoise of the prima(predicate) payoff , above . So loggerheaded core some not two-dimensional , so it is not heated up . For a long m in the core does not occur thermonuclear reaction converting helium into carbon copy . This reaction takes place at temperatures of the narrate of hundreds of millions of kelvins . It goes in stages. Initially, the colliding nuclei of helium give carcass a hot isotope of atomic number 4 that a impact with other alpha particle with luxuriously vim forms a stable isotope of carbon . This generates a very large standard of dynamism : 7.3 million electron volts.