ASTA02H3 Lecture Notes - Cno Cycle, Main Sequence, Hydrogen Atom
Document Summary
Only a nuclear source can provide such a vast amount of energy. Nuclear energy can be produced via two procedures. Assembles new forms of old, lighter nuclei atoms into heavier. At the beginning, it was believed that only one force existed. That one force later broke up into four. Breaks nucleus of heavy atoms into small nuclei. At 10 million degrees kelvin there is enough energy to give nuclear force time to bind. Unlikely that four protons (4 hydrogen atoms) would collide to make helium. Happens one by one, not all at once. H + h 2h + e + 2% of the energy produced by the sun. Nothing at 10 million degrees kelvin can remain an atom. How to relate (mass conversion into energy) Sun producing 5 tons of mass per second. Of total mass, 0. 07% lost by sun as it burns. Only happens at 10 million degrees kelvin or higher temperatures. Need to add energy to change it.
