Definition of Symbols

1. Definition of Symbols

2. Fusion Raising the Temperature gives rise to a higher rate of fusion which will increase the radiation pressure Lowering the Temperature gives rise to a lower rate of fusion which will decrease the radiation pressure

3. Ideal Gas Law Raising the gas pressure results in higher Density and Temperature

4. Hydrostatic Equilibrium Raising the radiation pressure pushes gas outward causing it to expand leading to lower gas pressure Lowering the radiation pressure allows gravity to compress the gas leading to higher gas pressure

5. Stability • Stars are stable because any small change in any of its properties sets of a chain of cause and effect that opposes the change • The most common scenario is that Nuclear Reaction rates decrease owing to hydrogen being used up, the stability mechanism ensures that the decrease will correct itself by causing an increas

6. Stability Mechanisms