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Does Atomic fission requires temperatures of one million degrees or hotter?
Wiki User
∙ 15y ago
No, in fact nuclear fission of U-235 proceeds quite well at temperatures of 300-400 degC, and slow or thermalised neutrons are captured more readily than fast neutrons, so having a relatively cool moderator helps. The fuel used is solid uranium dioxide which must not approach its melting point. You are probably thinking of nuclear fusion, where a gaseous plasma is used, and experiments in tokamaks have to get this plasma up to hundreds of millions of degrees for fusion to take place.
Wiki User
∙ 15y ago
Wiki User
∙ 13y agoNot so. Fusion needs mega-temperatures in order to ignite, but fission is going on in
the core of every nuclear power plant, even when it's chilly inside the reactor building.
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3- At what specific gravity of salt water does salt start to precipitate?
@ 500000000000000 million degrees man
What produces more energy fusion or fission?
Yes and No. This really depends on what you mean.If you are talking about a single event, the fission of a uranium atom typically releases about 200 million electron volts (MeV). By contrast, the fusion of a deuterium atom with a tritium atom produces about 17.6 MeV. This would seem to mean that fission produces more energy. And it does - per event.On the other hand, a deuterium atom has an atomic mass of 2, and a tritium atom has an atomic mass of 3. So the fusion involving an atomic mass of 5 produces 17.6 MeV. If we had 47 of these, the total mass would be about 235 (roughly the same as 235U) and the result would be 47x17.6 or 827.2. By contrast, 235U has an atomic mass of roughly 235. And the fission involving the atomic mass of 235 produces 200 MeV. This means that the fusion of an equal mass produces (in this particular comparison) a bit more than four times as much power. So fusion can be more powerful - by mass.But fusion of elements more massive than iron is endothermic. So it is always less powerful than fission.Also, there is a practical consideration, if you are interested in practicalities. And this relates to the amount of fuel available. We will run out of uranium and thorium ores. When that happens, fission power will no longer be possible. We will possibly never run out of fuel for fusion fuels. So fusion is a more powerful power source over time. But of course, by this standard, wind is more powerful than fission, because we will run out of the ores, but the wind will just blow on and on.
How and when was oil created?
Oil is primarily formed from algea that died and sank to the sea floor. Layers of sediment were deposited on top of this. Under immense pressure and high temperatures, the algae was converted into kerogen and then oil. Different oil deposits are dated to differen ages rangingf from over 500 million to less than 50 million years old.
What was the total production of gasoline and kerosene in combined?
28.8 million
What does ppm stand for in science?
ppm stands for Parts Per Million - how many molecules of "a" are in 1 million molecules of "b"
Why are the high temperatures produced by the explosion of a fission bomb necessary to initiate fusion in a thermonuclear device?
On the order of 10 million K.
What is the temperature which fusion of hydrogen into helium begins?
Fusion requires temperatures about 100 million Kelvin
Where is it where temperatures reach 27 million degrees F?
The center of the sun has a temperature that high
What is 15000000 degrees celsius in Fahrenheit -?
Temperatures in that range are associated with stellar fusion, and are usually expressed in Kelvin, which is practically the same as Celsius for those high temperatures. However, 15 million °C would equal 27 million °F. Fahrenheit is almost never used for such high temperatures. Celsius and Kelvin are normally used. But 15 million degrees on the Celsius scale would be approximately 27 million degrees on the Fahrenheit scale.
Sun surface temperature?
The sun has no real surface, just different layers of plasma. The layer of the sun that we see is called the "photosphere." The temperatures of the different layers are shown below -- Center -- 27-million degrees Convective zone -- about 7-million degrees Photosphere -- 10,300 degrees Chromosphere -- 22,900 degrees Corona -- 2-million degrees
How do you convert 27000000 degrees Fahrenheit to Celsius?
The temperature 27 million degrees Fahrenheit is equal to about 15 million degrees Celsius. (14,999,982 °C). The conversion formula is Celsius temperature = 5/9 x (Fahrenheit temperature - 32). Such high temperatures are usually expressed in Kelvin, which would also be about 15 million K.
Does the corona consists of gases?
The Sun's corona consists of very hot gases, which can reach temperatures of up to 3.5 million degrees Fahrenheit.
What would happen if a planet's core is billions of degrees hot?
It would explode. NOTHING is "billions of degrees hot"; at temperatures of "only" a few hundred million degrees, the very atoms themselves would disintegrate into pure energy.
How hot is the sun when you are right next to it?
The Sun's core is 27 million degrees and 10 million degrees on it's surface. About 3 million miles from the surface, the temperatures scorch up to above 248 degrees Fahrenheit. You could make it to that distance before you become fried to death D:
What is 25 million Fahrenheit in degrees?
25 million degrees Fahrenheit = 13,888,871.1 degrees Celsius.
15 million degrees Celsius to Fahrenheit?
59 million degrees Fahrenheit.
Temperature of the corona?
The temperature of the sun's corona reaches at least one million degrees and possibly more. This is strange because the surface of the sun has temperatures of five thousand degrees. The corona is much farther away and logically should be cooler.
