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wellerstein's profile
Alex Wellerstein
Alex Wellerstein
Alex Wellerstein
Verified account
@wellerstein

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Alex WellersteinVerified account

@wellerstein

Historian of science, secrecy, and nuclear weapons. Professor of STS at @FollowStevens. UC Berkeley alum with a Harvard PhD. NUKEMAP creator. Coder and web dev.

Hoboken, NJ / NYC
blog.nuclearsecrecy.com
Joined September 2011

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    1. Alex Wellerstein‏Verified account @wellerstein Jul 16
      • Report Tweet

      Today is the 74th anniversary of the first atomic bomb detonation, "Trinity." Here's my New Yorker piece on the test from a few years back.https://www.newyorker.com/tech/annals-of-technology/the-first-light-of-the-trinity-atomic-test …

      6 replies 83 retweets 120 likes
      Show this thread
    2. Lamy râle‏ @Lamyrle Jul 16
      • Report Tweet
      Replying to @wellerstein

      Noter que la bombe qui a rasé Hiroshima, plus simple de conception, n'a pas été validée par un test avant son utilisation opérationnelle.

      1 reply 0 retweets 0 likes
    3. Alkor‏ @alkor_ Jul 16
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      Replying to @Lamyrle @wellerstein

      It had much simpler gun-like design and massnof it's uranium core was much greater than it was required. So everything was guaranteed. Plutonium A-bomb could be only implosion-based, and such unorthodox design required extra test to be sure.

      1 reply 0 retweets 1 like
    4. Lamy râle‏ @Lamyrle Jul 16
      • Report Tweet
      Replying to @alkor_ @wellerstein

      Yes. People often think the 2 bombs were the same… Is there operationnal weapon with gun design ?

      2 replies 0 retweets 1 like
      Alex Wellerstein‏Verified account @wellerstein Jul 16
      • Report Tweet
      Replying to @Lamyrle @alkor_

      A few Little Boy bombs were stockpiled in the immediate postwar, but after that the design was only used for nuclear artillery, where the diameter of the weapon was very important. I don't know about other countries. South Africa's small stockpile were supposedly gun-designs.

      9:18 AM - 16 Jul 2019
      • 1 Like
      • Alkor
      1 reply 0 retweets 1 like
        1. New conversation
        2. Lamy râle‏ @Lamyrle Jul 16
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          Replying to @wellerstein @alkor_

          Acoording to me, Gun-Type design stimll have a big advantage. It's the most relable, durable and "free" support design (even a netron initiator is not need). A Country who want ta have an "eternal" dterence (like mine, France) should keep some in the stockpile.

          1 reply 0 retweets 0 likes
        3. Alkor‏ @alkor_ Jul 16
          • Report Tweet
          Replying to @Lamyrle @wellerstein

          I am afraid that you cannot use gun design device as a primary in thermonuclear weapon, so the yield you can have this way is quite limited. Also it allows to use uranium, not plutonium, and most of core will be wasted. It looks to me as bad set of qualities for a French nuke.

          1 reply 0 retweets 0 likes
        4. Lamy râle‏ @Lamyrle Jul 16
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          Replying to @alkor_ @wellerstein

          The idea isn't to use it as primary or to substitue modern warhead (France has thermoNuke since long time). The idea is to have a retalation even if the rest of the force and most support in the country is kaput . The yield in the 20kt range is enought to have a real deterence.

          1 reply 0 retweets 1 like
        5. Alkor‏ @alkor_ Jul 16
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          Replying to @Lamyrle @wellerstein

          I am not sure that such a mosquito bites are sufficient for a real countervalue deterence. Frankly speaking I believe that even biological warfare is more perspective deterence tool. Also it seems that psychological aspect of nuclear deterence is deteriorating in modern days.

          1 reply 0 retweets 0 likes
        6. Lamy râle‏ @Lamyrle Jul 16
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          Replying to @alkor_ @wellerstein

          Not a conter value deterence but something like a personnal deterence. The target is the foreign leader(s) who have to be scared of a retalation may be in 3 month or 3 years (long time after France is destroyed) with a warhead placed near is own home/office 😉

          2 replies 0 retweets 1 like
        7. Alkor‏ @alkor_ Jul 16
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          Replying to @Lamyrle @wellerstein

          Yep, that sounds like Israel's Samson Option. I am sorry but it also sounds impractical. If you can reach some foreign leader with very heavy (tons?) radioactive device, then you can reach him/her with smaller (and less detectable) conventional bomb and/or sniper weapon.

          1 reply 0 retweets 1 like
        8. Lamy râle‏ @Lamyrle Jul 16
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          Replying to @alkor_ @wellerstein

          Yeah, like Samson option ! The effective range and the "Windows of shoot"of bomb ou snipping is very shorter than a 20kt device... The purpose is not to have a miraculous weapon but to have new option that is not expensive, very easy to build and able to concern foreign leader..

          0 replies 0 retweets 0 likes
        9. End of conversation

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