Tag Archives: binding energy

Nuclear Reactions

What are the nuclear reactions taking place in the interior of the stars, and what are their elementary steps? There are many. In these reactions, light elements fuse into heavier elements. The more massive is a star and the higher the temperature … Continue reading

Posted in Uncategorized | Tagged , , , , , , , , , , , , , , , , , | Leave a comment

Energy Sources and Luminosity

Where does the energy emitted by a star come from? One source is obviously gravitational potential energy U. If r decreases, U decreases too, and can be converted into radiated energy. However, because of the Virial Theorem (E = <U>/2) only 1/2 of … Continue reading

Posted in Uncategorized | Tagged , , , , , , , , , , , , , , , | Leave a comment