The heat of a nuclear weapon is determined by the rate of decay of fissile material in the core.
For example the smallest amount of Plutonium capable of being used with a neutron reflector at natural critical mass is about 4 kilograms of 93% 239Pu.
Unfortunately a small portion of the remaining 7% will be Plutonium 240 which decays at a faster rate and thus generates heat from it's decay.
In a 4 kilogram mass of Weapons Grade (93% 239Pu) Plutonium, every 937,440 seconds it will generate 0.769 MeV. That's a reasonable amount of energy like having it wrapped by a warm electric blanket.
Over time, this degrades the Plutonium and eventually renders it useless for a nuclear weapon. Every now and then approximately every 15 years the Plutonium in a warhead needs changing.
Heat also makes a nuclear warhead less potent and reduces the yield.
That would vary from weapon to weapon.
A tactical nuke is actually the one thats stronger than nuclear bomb nuke well a nuclear factory is not a weapon its stronger than it but its not a weapon
The most powerful nuclear weapon detonated was the Tsar Bomb which was a 50 megaton thermo-nuclear bomb that was tested in October 30, 1961, in the Novaya Zemlya archipelago
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This is best explained in Glasstones's book The Effects of Nuclear Weapons.
The meaning of the word nuclear weapon, is a weapon that has a nuclear warhead on it.
This nuclear weapon is called an atomic bomb or a nuclear bomb
An atomic weapon is an alternative name for a nuclear weapon, a weapon which derives its energy from the nuclear reactions of either fusion or fission.
Nuclear weapon detonations
If by "bomb" you mean a conventional explosive weapon, then the nuclear weapon is more powerful.
Theoretically any Thermonuclear Fusion Explosions (what happens on the surface of the sun) are the same heat.
* Earthquake Richter 5.0 = 32 kilotons nuclear weapon, like was used at Nagasaki * Earthquake Richter 6.0 = 1 megaton nuclear weapon * Earthquake Richter 7.0 = 32 megaton nuclear weapon * Earthquake Richter 7.1 = 50 megaton nuclear weapon, Tsar Bomba, the largest nuclear weapon ever tested * Earthquake Richter 8.0 = 1 gigaton nuclear weapon, much larger than anything ever made
nuclear chemicals such as plutonium
That would vary from weapon to weapon.
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the first nuclear weapon was issued in WW2 created by the americans in a chicargo squash court