Tag Archives: gravitational potential energy

Protostar Formation – Infographic

Took me a while to do that. I hope that you like what I did. In some respects, I am not happy. I wanted to fit much, much more info. But I saw very soon that that was not going to … Continue reading

Posted in Uncategorized | Tagged , , , , , , , , , , , | 1 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

Escape Velocity

Previous: Newton’s Laws How fast must an object travel to escape a gravitational potential well? At the escape velocity, or faster. G = Gravitational constant, 6.67300 × 10-11 m3 kg-1 s-2 M = Mass of the planet (or whatever it is) r = distance … Continue reading

Posted in Uncategorized | Tagged , , , , | 2 Comments