Main Sequence
The basic parts of a star is the center or core. Which is usually made up of hydrogen and helium atoms. And there is the outer edge, which is the edge of the star which is where the energy gets pulled back by the gravitational pull of the center or core of the center.
This Diagram shows the Energy that is radiating out and the gravitational pull, pulling the energy back into the core. It also shows that the pressure equals gravity: P=G.
| How Stars WorkThe Main sequence is when a star has enough gravitational pull to pull the energy back that it is radiating out. This is why it is a perfect circle sphere. The North Star is not Expanding or contracting because it is at a balanced state. Which Means that the Energy radiating out and the Gravitational pull is equal which makes it a sphere and a stable star.
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Energy generation and movement within the star
The main cause of energy generation is nuclear fusion. The stars that are located in the main sequence are the ones that burn hydrogen and that transforms in to helium. The luminosity depends on how much energy is radiated from the surface. The total amount of energy that is releases or radiated depends on the mass of the star. Low mass stars in the main sequence burn up all of their supply or hydrogen much slower than large mass stars in the main sequence. Once any star buns up all of its hydrogen supply it either dies or becomes a giant star by fusing heavier elements.
When you see the glowing light from a star it is probably stored in the form of high-energy photons. These photons are stored in the inner layers of the star so they have to work their way out to the outer layer. They are absorbed many times in order to get to the layer just below the surface, the photosphere. The process that takes place in this layer is the convection zone helps the photon to the solar surface so it can radiate and be seen far away.
When you see the glowing light from a star it is probably stored in the form of high-energy photons. These photons are stored in the inner layers of the star so they have to work their way out to the outer layer. They are absorbed many times in order to get to the layer just below the surface, the photosphere. The process that takes place in this layer is the convection zone helps the photon to the solar surface so it can radiate and be seen far away.