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What is the difference between hot nuclear fusion and cold nuclear fusion?
"Hot" nuclear fusion (this is not the term normally used) is exactly what the name implies, the materials are heated, which provides them with enough energy to overcome the normal repulsion of protons. Cold nuclear fusion requires no heating and has not yet been proved, although dozens of Physicists and Electro-Chemists have claimed to have created cold fusion. Cold Fusion relies on other forces, such as pressure, to overcome the electrostatic force of repulsion.
Does nuclear fusion occur in the sun's corona?
No, while it is hot enough the pressure is too low.
What star is so small in mass that its core never gets hot enough to sustain nuclear fusion reactions?
It isn't a star unless it can sustain fusion. We might call such an object a "failed star", but unless it can sustain fusion it isn't a star at all.
What is the major disadvantage of using nuclear fusion reactors?
We don't have nuclear fusion reactors. We have not been able to sustain a controlled fusion reaction for more than a brief moment in time, and of more than a small amount of power. Only the Sun and stars have controlled fusion reactions, and Hydrogen bombs have uncontrolled fusion reactions. The problem is in maintaining the extremely high temperature and pressure required to sustain a fusion reaction, while at the same time containing the plasma that results from it. It is so hot that no container will hold it. We can build magnetic "bottles" so to speak, but the enormous flux required to do that requires super magnets, and that requires super-conductors and super-cold temperatures. Placing a super-hot plasma flow within the boundaries of a super-cold magnet is just not something we have accomplished yet. We are working on it, but, barring any stupendous discovery, I think controlled fusion reactors are at least 50 or a 100 years away.
How hot must the core of a protostar be to begin nuclear fusion?
When the core of a protostar has reached about 10 million K, pressure within is so great that nuclear fusion of hydrogen begins, and a star is born.
Is the sun a hot fusion or cold fusion?
Yes
Why is the sun hot - kids version?
the sun is hot because of the nuclear fusion that blows up in it
What makes it so hot inside a star?
Nuclear fusion.
Did nuclear fusion cause the sun to get hot?
Yep, you got it.
Do gasses make the sun hot?
The Sun is hot because it is converting Hydrogen into Helium by nuclear fusion.
What is a giant ball of hot gases that undergo nuclear fusion?
a star
What part of th sun produces energy through nuclear fusion?
The entire sun does it. As long is it is hot enough, it will be causing nuclear fusion.
What is the difference between hot nuclear fusion and cold nuclear fusion?
"Hot" nuclear fusion (this is not the term normally used) is exactly what the name implies, the materials are heated, which provides them with enough energy to overcome the normal repulsion of protons. Cold nuclear fusion requires no heating and has not yet been proved, although dozens of Physicists and Electro-Chemists have claimed to have created cold fusion. Cold Fusion relies on other forces, such as pressure, to overcome the electrostatic force of repulsion.
Where is anteres?
It it somewhere in space. it is huge, l ridiculosly hot and have nuclear fusion)
What contains hot gases at high temperature?
In a fusion reactor the hot gases or plasma are contained within a magnetic field.
What keeps stars core hot enough for hydrogen fusion?
Initially, a star's core is heated by compression as a nebula collapses. Once fusion is up and going, the fusion itself provides the necessary heat.
Is Neptune a sun?
No, Neptune is a planet. Stars are hot, glowing with the heat from nuclear fusion in their core. Neptune is cold, and much too small to have fusion.
