Sentences with phrase «begin hydrogen fusion»
[10] The ZAMS curve can be calculated using computer models of stellar properties at the point when stars begin hydrogen fusion.
http://www.newworldencyclopedia.org/ Not exact matches
The fusion reactor, which aims to produce virtually limitless power by fusing hydrogen nuclei, is ready to begin construction.
A star begins to die when the last of the hydrogen fuel at its center succumbs to the star's fusion furnace and the center collapses into a highly compressed, white - hot core.
The heat becomes so intense that helium, a fusion by - product, begins to burn both within the core and just outside it, along with hydrogen remaining outside the core.
Experiments with actual fusion fuel — a mix of the hydrogen isotopes deuterium and tritium — began in the early 1990s in the Tokamak Fusion Test Reactor (TFTR) in Princeton, US, and the Joint European Torus (JET) in Culham, UK.
According to standard models of stellar evolution, around that time the sun will largely deplete the hydrogen reserves in its core and begin to balloon as its fusion reactions migrate outward.
These large protostars continue to contract, but instead of producing heat through contraction alone, they begin to convert hydrogen into helium in a process known as thermonuclear fusion.
Upon reaching a suitable density, energy generation is begun at the core using an exothermic nuclear fusion process that converts hydrogen into helium.
As the star's outer layer begins to swell from the heat of renewed hydrogen fusion before cooling from expanion, this hydrogen - burning zone moves outward, cools, and shuts down while its underlying of helium begins to fuse in turn.
Through decades of research into heavy ion fusion, AFRD has long experience with induction accelerators — as does Livermore, which began building them in the 1960s for research into thermonuclear fusion (for applications such as hydrogen bombs).
As Fortney explained, brown dwarfs are formed in the same vast clouds that produce stars by the hundreds, but don't have sufficient mass to build the internal pressure needed to begin the nuclear fusion of hydrogen that defines a star.