What is Atomic bomb: Definition and 21 Discussions

A nuclear weapon (also called an atom bomb, nuke, atomic bomb, nuclear warhead, A-bomb, or nuclear bomb) is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or from a combination of fission and fusion reactions (thermonuclear bomb). Both bomb types release large quantities of energy from relatively small amounts of matter.
The first test of a fission ("atomic") bomb released an amount of energy approximately equal to 20,000 tons of TNT (84 TJ). The first thermonuclear ("hydrogen") bomb test released energy approximately equal to 10 million tons of TNT (42 PJ). Nuclear bombs have had yields between 10 tons TNT (the W54) and 50 megatons for the Tsar Bomba (see TNT equivalent). A thermonuclear weapon weighing little more than 2,400 pounds (1,100 kg) can release energy equal to more than 1.2 million tons of TNT (5.0 PJ).A nuclear device no larger than a conventional bomb can devastate an entire city by blast, fire, and radiation. Since they are weapons of mass destruction, the proliferation of nuclear weapons is a focus of international relations policy. Nuclear weapons have been deployed twice in war, by the United States against the Japanese cities Hiroshima and Nagasaki in 1945 during World War II.

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  1. E

    Are There Sci-Fi Movies Similar to Oppenheimer?

    Just watched Oppenheimer. It's amazing how they can make the bomb explode at first try, and also dropped them at Nagasaki and Hiroshima at first try. Is it possible that it's easier to make an atomic bomb than assumed by the public? If we will have a Manhattan Project II. What is the most...
  2. R

    Why can't we simply use an atomic bomb to get the fusion working?

    why can not simply explode an atomic bomb inside a recint with plasma and hydrogen so the temperature and power generated will make the fusion working
  3. mjagz81

    I Survivability in 1 psi zone: How screwed am I?

    HI, Id like someone to assist me please. the nearest what I would consider nuclear target is 14.7km from my house as the crow flies. The presumed explosion is 800 kilotons air burst My house is brick built, modern double glazed windows. Diagonal on from the explosion. Nuke map indicates I...
  4. U

    I Uncovering the Mystery of the 1991 Atomic Bomb Ignition Papers

    I recently looked at a transcript of a 1991 interview of Hans Bethe, where he recalled the suggestion that an atomic bomb could ignite the air. "Teller at Los Alamos put a very good calculator on this problem, [Emil] Konopinski, who was an expert on weak interactors, and Konopinski together...
  5. P

    How did Robert McNamara's 100 megaton bomb stay hidden from the public eye?

    In Fog Of War, a superb documentary about the life lessons learned by Robert McNamara is mentioned the design development and detonation of a 100 megaton bomb. I have no reason to doubt what McNamara said was untrue or a lie, what's the point of that anyway? Anyone have any ideas how such a...
  6. Sarah Madsen

    How to analyse an atomic bomb?

    < Mentor Note -- thread moved to HH from the technical physics forums, so no HH Template is shown > Hello mates. I was wandering how to analyze an atomic bomb, when the only information given, is that the bomb contains 5,6 kg plutonium, and is the same model as fat man. Do you have any...
  7. Isaac0427

    How did E=mc^2 contribute to the atomic bomb?

    Before I got into physics, I thought that ##e=mc^2## was the atomic bomb equation. I now know that the equation itself has nothing to do with the atomic bomb. So, I'm wondering, how did ##e=mc^2## contribute to the development of nuclear/atomic weaponry/power? Edit: I do not know if this is in...
  8. R

    Nuclear fission in an atomic bomb

    A person said: "However uranium-235 (U235) makes up only 0.72% of normal uranium metal and has to be separated from the remainder (mostlyuranium-238) in special factories which makes uranium-235 (U-235) a little more expensive. An uranium-235 (U-235) atomic has three neutrons less than an...
  9. V

    Dimensional analysis - atomic bomb explosion radius

    Homework Statement :[/B] An atomic explosion can be approximated as the release of a large amount of energy ##E## from a point source. The explosion results in an expanding spherical fireball bounded by powerful shock wave. Let ##R## be the radius of the shock wave and assume that...
  10. E

    Hiroshima Little Boy Atomic Bomb Physics Help

    Hiroshima "Little Boy" Atomic Bomb Physics Help I just wanted some feedback on a paper I just finished. Did I do everything correctly and does it make sense? It seems my data supports information I found online: "It contained 64 kg (140 lb) of uranium, of which less than a kilogram underwent...
  11. H

    Calculating the explosive yield of an atomic bomb

    Homework Statement I'm writing a paper on the Manhattan Project, and as part of this paper I am asked to show: "... calculations that can help illustrate the explosive power of an atomic bomb compared to ordinary explosives."Homework Equations Released energy per fission: Q = \Deltam * c2 The...
  12. E

    Exploring the Legacy of the Atomic Bomb: Told Science

    "Told science" Hi guys! I am going to take part in a literature project, which is called "told science". You have to write a scientific eassy such as a story. For this year I was wondering to write down something about the atomic bomb. My idea was to write the best quotation on atomic bomb in...
  13. S

    Exploring the Science Behind the Power of Hydrogen Bombs vs Atomic Bombs

    I am an afficionado of all weaponry, and there is this question I have which has bugged me for a while. What, exactly, makes a Hydrogen bomb different from an atomic bomb? I realize that the explosive is Hydrogen as opposed to Uranium or Plutonium, but why is it more powerful?
  14. J

    Impact of atomic bomb on science

    Hi guys. I was wondering what are your thoughts on how the atomic bomb has made an impact in science?
  15. O

    Atomic BOMB but not RADIOACTIVE

    i heard that there is an idea (i don't know if it's true) that we can make ANY ELEMENT radioactive! and i thought "wtf"!
  16. B

    Does an Atomic Bomb's Explosion in a Contained Box Affect Its Weight?

    Homework Statement I am having some trouble with this one, Suppose an atomic bomb was exploded in a box that was strong enough to contain all the energy released by the bomb. After the explosion the box would weigh: a) more than before the explosion b) less than before c) no change...
  17. A

    News Does anybody know which are the comp-onents of the atomic bomb

    Does anybody know which are the comp-onents of the "atomic bomb" Thank-you for your help...
  18. T

    Enriching Uranium: Gas Centrifuge Method

    Homework--- Build Atomic Bomb What is the general output of enriched uranium from an electrolysis and fractional distillation process? I have already researched the outputs for gas diffusion, thermal diffusion, gas cenrifuge, laster isotope separation, and mass spectroscopy. If you could give...
  19. T

    Atomic Bomb Construction? -Yes

    What is the general output of enriched uranium from an electrolysis and fractional distillation process? I have already researched the outputs for gas diffusion, thermal diffusion, gas cenrifuge, laster isotope separation, and mass spectroscopy. If you could give me any information on its...
  20. A

    Calculating Atomic Bomb Shockwave and Blast Radius Formula

    Hi everyone. I've been searching google for a clear formula and formulas for atomic/nuclear bomb shockwave and blast radius. I haven't come across anything remotely close that details the effects of time on the effects of the bomb as it crosses a set distance. Can some one help me with the...
  21. N

    How can E=mc^2 be used to calculate the radiation from a nuclear blast?

    Hello everyone I am new to PF actually this is my first thread. I am looking for the equation to see how far and how, the radiation from the Nuclear Blast using E=mc^2. Can anybody help? Please[?] Nicole