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through the process of fusion, it becomes a star: the birth of the star is the start of fusion. therefore, it is after fusion that it is classified as a star.
Under ordinary conditions they are the same 'point'. For example, water just freezes and it just melts at zero degrees centigrade. The difference between the two states is not temperature, but the heat of fusion. When the heat of fusion is removed from water at zero degrees, it will freeze. When the heat of fusion is added to ice at zero degrees, it will melt.
Between 10 and 15 million degrees.
Yes, in Red Dwarf Stars. However, the temperatures required for fusion are still pretty high, millions of degrees Celsius.
No, normally it occurs at temperatures of millions of degrees. It does occur at room temperature, but not in significant amount; any possible practical use of "cold fusion" is, so far, speculation.
fusion
through the process of fusion, it becomes a star: the birth of the star is the start of fusion. therefore, it is after fusion that it is classified as a star.
The specific latent heat of fusion of water is 334 kJ/kg. Ice melts at 0 degrees Celsius and boils at 100 degrees Celsius.
It has to be at hundreds of millions of degrees kelvin, before a fusion reaction between deuterium and tritium will start
Under ordinary conditions they are the same 'point'. For example, water just freezes and it just melts at zero degrees centigrade. The difference between the two states is not temperature, but the heat of fusion. When the heat of fusion is removed from water at zero degrees, it will freeze. When the heat of fusion is added to ice at zero degrees, it will melt.
Under ordinary conditions they are the same 'point'. For example, water just freezes and it just melts at zero degrees centigrade. The difference between the two states is not temperature, but the heat of fusion. When the heat of fusion is removed from water at zero degrees, it will freeze. When the heat of fusion is added to ice at zero degrees, it will melt.
guyhbn
"Cold fusion" refers to fusion at (or near) room temperature, rather than the millions of degrees that are normally required. This has not been achieved so far - at least, not to any significant degree.
When the core of the Sun/Star reaches about 10 million degrees Kelvin.
The minimum temperature is about 10,000,000 degrees Celsius.
The core of a fusion bomb reaches a temperaure of approximately 100 million degrees Kelvin in a very small space. As you move outwards, the temperature drops into the millions of degrees, and into the hundred thousands of degrees. How quickly at at what distance they drop depends on the yield of the bomb, and where it is detonated.
The very center of the core, where nuclear fusion is occurring; millions of degrees.