malawi_glenn said:what is L_sun ?
(iknow that it is Luminosity, but try to find the value)
Tuugii said:thanks for the reply. But I didn't understand what was your hint... :)
Gravitational contraction Q is a measure of the amount of energy released through the contraction of a gravitationally bound system, such as a star or a planet.
Gravitational contraction Q occurs when the gravitational force between particles in a system causes them to move closer together, converting potential energy into kinetic energy and releasing it as heat.
The value of gravitational contraction Q is affected by the mass of the system, the initial radius of the system, and the composition of the system's materials.
The larger the value of gravitational contraction Q, the younger the system is, as more energy is released during the contraction process in the earlier stages of a system's formation.
Gravitational contraction Q plays a significant role in the formation of celestial bodies, as it is responsible for heating up and shaping protoplanetary disks, causing them to eventually form planets and other objects in the universe.