Big Bang Theory

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Sneak-peak into the prevailing theory on the birth of our universe.

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Big Bang Theory

  1. 1. THE BIG BANG THEORY A sneak-peek into the prevailing Theory on Birth of the Universe Pratheek Manjunath 2nd semester, EEE RVCE, Bangalore
  2. 2. OVERVIEW • What is Big Bang ?! • Timeline- Sequence of Events • Matter & Anti-Matter • Particle Physics-What is responsible for ‘mass’ ? • Efforts to recreate Big Bang conditions by CERN • The Largest Machine on the planet- LHC • Future of the Universe as predicted by the theory.
  3. 3. What does the theory state ? The Big Bang was the event which led to the formation of the UNIVERSE. According to the Big Bang model, the universe was originally in an extremely hot and dense state that expanded rapidly. This expansion caused the universe to cool and resulted in the present diluted state that continues to expand today. It is based on the Laws of Physics & Cosmology.
  4. 4. Sequence and Time line
  5. 5. Matter and anti-matter •Mass Energy •Reverse of a nuclear reaction occurred during the big bang. •Matter and anti-matter were simultaneously created. •Matter+AntiMatter = Tremendous Energy •Proportion of matter >> proportion of anit-matter. •This disproportion led to the formation of life on the universe. •So how did mass come into picture?!
  6. 6. Elementary Praticles Hadrons/Bosons* Leptons Baryons Mesons Protons Neutrons *Named after the Indian Scientist Satyendranath Bose.
  7. 7. • CERN is the European Oraganisation of Nuclear Research. • Scientists attempted to recreate the conditions just after the Big Bang by conducting various experiments. • One of the most promising experiments is ‘ALICE’ –A Large Ion Collider Experiment. • On 30th of March 2010, the LHC successfully smashed 2 protons with the aim of revealing the ‘Higgs Boson’. • The data yielded from this experiment is expected to take 2 years for processing and studying. CERN
  8. 8. Facts about the LHC • The circumference of the LHC is 27km • It houses 9300 superconducting-electromagnets which use a total current of 12,000A ! • The cooling system has 10,080 tons of liquid Nitrogen and 120 tons of liquid Helium. They reduce the temperature to 2K! • Travelling at 99.99991% the speed of light, the proton beams travel 11,245 times around the collider is 1s. • The temperature of the collision is million times more than core of the sun. • The energy of the collision is 14TeV . • The vacuum pressure inside the collider is 10-13 atm • The Grid-World’s most powerful Supercomuter network.
  9. 9. Animation of the collision at LHC
  10. 10. Future of The Universe • Dark Energy & Dark Matter constitute 96% of the Universe. • Birth:Big Bang::Death:Big Crunch • Temperature of Universe is constantly decreasing due to its expansion-As stated by Hubble- Big Freeze. • Planck’s Temperature-Lowest temperature at which the Universe will collapse.

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