Physics Van 3-site Navigational Menu

Physics Van Navigational Menu

Q & A: What is the sun's source of energy

Learn more physics!

Most recent answer: 01/31/2015
Q:
If energy can neither be created nor destroyed then how the sun get energy to undergo nuclear reactions .We know every reactions need some energy for the activation.What gives sun energy to undergo nuclear reactions?
- Vishnu Dev (age 20)
mavelikara,kerala, India
A:

Hello Vishnu,

The source of energy for the sun is the conversion of rest mass to other forms of energy via nuclear reactions.   There are several reactions, the dominant one being the conversion of protons to helium.   See for a detailed description.

LeeH


(published on 01/31/2015)

Follow-up on this answer.