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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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    5. Alex Wellerstein‏Verified account @wellerstein 19 Jun 2016
      • Report Tweet
      Replying to @jackiemopsy

      John von Neumann, Otto Frisch, Alan Ayers, James Tuck, Robert Christy, Rudolph Peierls, etc.

      1 reply 0 retweets 0 likes
    6. 幸せは(きのこ)雲の上に♪ ない‏ @kirakiraryoko 15 Nov 2016
      • Report Tweet
      Replying to @wellerstein

      Did B-29 shield the A-bomb from the environmental neutron radiation above 100 MeV? @jackiemopsy @TweetTw88036790

      1 reply 0 retweets 1 like
    7. Alex Wellerstein‏Verified account @wellerstein 15 Nov 2016
      • Report Tweet
      Replying to @kirakiraryoko @jackiemopsy

      I don't know. Why?

      2 replies 0 retweets 1 like
    8. 幸せは(きのこ)雲の上に♪ ない‏ @kirakiraryoko 16 Nov 2016
      • Report Tweet
      Replying to @wellerstein @jackiemopsy

      This is because the environmental neutron radiation cannot be completely stopped by shielding.

      1 reply 0 retweets 1 like
    9. Alex Wellerstein‏Verified account @wellerstein 16 Nov 2016
      • Report Tweet
      Replying to @kirakiraryoko

      I am not sure what you are implying the importance of this is?

      1 reply 0 retweets 0 likes
    10. 幸せは(きのこ)雲の上に♪ ない‏ @kirakiraryoko 17 Nov 2016
      • Report Tweet
      Replying to @wellerstein

      Even 16.6㎏ of natural uranium in the building goes critical after being hit by the environmental neutron radiation. How is HEU?

      5 replies 0 retweets 1 like
      Alex Wellerstein‏Verified account @wellerstein 17 Nov 2016
      • Report Tweet
      Replying to @kirakiraryoko

      But critical mass in air is much larger. For unreflected, 80% enriched uranium, it is about 50 kg.

      2:01 PM - 17 Nov 2016
      0 replies 0 retweets 0 likes

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