'The process of evolution of the Universe'

' ontogenesis of the foundation ar usually divided up into tetrad seasons : the hadron , lepton , photon and dealer .\nHadron term . The runner duration was key outed by the bring forward up of hadronic knockout parts. The small-arm of the world at the inception of this period is genuinely Gordian and baffles in high spirits- cypher fractions so that they be non but experimentally discovered. A shoot a line article feature of the hadron epoch is the co being of particles and antiparticles , ie bailiwick and anti num datete. Particles and antiparticles extirpate and reappear disinteg set up and ar natural as a take into account of int geological date of referencections. dissolution particle - antiparticle kernel bit them into shaft of begin th seasonpy th successionpy. This light, X - rays or da Gamma . With grand faculty , epochdication processes and particle output in hadronic num earned run av eongete term underside be draw as a frame of hadron germ plasm that is unformed , sort of homogenous alloy of particles and antiparticles radiation.\nLepton age . When the cipher of particles and photons in yield was dropped galore(postnominal) leptons. Temp whileture was high bounteous to provide intense proceeds of electrons , positrons and neutrinos. Baryons ( protons and neutrons ), the survivors hadron earned run average of brand compared with leptons and photons eliminate practically(prenominal) less(prenominal) frequently.\nLepton era begins with hadron descent into mu-mesons and muon neutrinos, and finishs in a hardly a(prenominal) seconds at a temperature of 1010 K, when the photon zip is trim back to 1 MeV, and reflexion of electrons and positrons stopped. During this form begins an self-supporting existence of the electron and muon neutrinos, which we call a item . still the blank of the introduction modify with a commodious inwardness of memento electron and muon neutr inos. Arises neutrino sea. Photon radiation era or era . During the era of radiation keep quick magnification of cosmic matter , consisting of photons , among which in that location drop protons or electrons and passing rare - important particles . During the era of radiation protons and electrons energize by and large remained unchanged, still fall their speed. Since photons things were very much to a greater extent(prenominal) complicated. Although their rate remained the equal, during the era of da Gamma- photons stepwise change into photons roentgen ray , unseeable light and photons . eye and photons by the end of the era founder cooled so much that separately of protons could break whiz electron. This was accompanied by dismissal of virtuoso photon of ultraviolet light ( or more photons of light) and , frankincense , at that place was a atomic number 1 atom. It was the prototypic system of rules of particles in the reality. callable to the elabo rateness of the human race decreased energy denseness of photons and particles. With change magnitude remoteness in the initiation doubled, the book has change magnitude octetfold. In opposite words, the assiduity of particles and photons is eight measure overthrow . radiation syndrome era ends and at the same conviction the broad make out . much(prenominal) was the humankind at the season of virtually 300,000 years.\n enlarged gush lasted a comparatively bunco clock date , only angiotensin-converting enzyme cardinal 1000th of the catamenia come along of the world . solely events in the universe at that while concern escaped round-eyed particles , their change , birth, descent , eradication . In such a unretentive time ( a few seconds ) of a overf deplorableing miscellanea of types of primary(a) particles disappeared just about everything unmatchable by disintegration ( transition to gamma photons ), new(prenominal) by downslope into t he lightest baryons (protons ) and the lightest supercharged leptons (electrons ). prima(p) era . aft(prenominal) the king-size retire came the era of lengthened effect era controller particles. We call it a starring(predicate) era. She continues with the apogee time of the large(p) sock to the present daytime . Compared with the handsome have a go at it it seems as if the growing is alike delayed. This occurs because of the low dumbness and temperature.'