Skip to content
By using Twitter’s services you agree to our Cookies Use. We and our partners operate globally and use cookies, including for analytics, personalisation, and ads.
  • Home Home Home, current page.
  • About

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @
  • Language: English
    • Bahasa Indonesia
    • Bahasa Melayu
    • Català
    • Čeština
    • Dansk
    • Deutsch
    • English UK
    • Español
    • Filipino
    • Français
    • Hrvatski
    • Italiano
    • Magyar
    • Nederlands
    • Norsk
    • Polski
    • Português
    • Română
    • Slovenčina
    • Suomi
    • Svenska
    • Tiếng Việt
    • Türkçe
    • Ελληνικά
    • Български език
    • Русский
    • Српски
    • Українська мова
    • עִבְרִית
    • العربية
    • فارسی
    • मराठी
    • हिन्दी
    • বাংলা
    • ગુજરાતી
    • தமிழ்
    • ಕನ್ನಡ
    • ภาษาไทย
    • 한국어
    • 日本語
    • 简体中文
    • 繁體中文
  • Have an account? Log in
    Have an account?
    · Forgot password?
    New to Twitter?
    Sign up
wellerstein's profile
Alex Wellerstein
Alex Wellerstein
Alex Wellerstein
Verified account
@wellerstein

Tweets

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

Tweets

  • © 2019 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • Imprint
  • Cookies
  • Ads info
Dismiss
Previous
Next

Go to a person's profile

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @

Promote this Tweet

Block

  • Tweet with a location

    You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more

    Your lists

    Create a new list

    Under 100 characters, optional
    Privacy

    Copy link to Tweet

    Embed this Tweet

    Embed this Video

    Add this Tweet to your website by copying the code below. Learn more

    Add this video to your website by copying the code below. Learn more

    Hmm, there was a problem reaching the server.

    By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.

    Preview

    Why you're seeing this ad

    Log in to Twitter

    · Forgot password?
    Don't have an account? Sign up »

    Sign up for Twitter

    Not on Twitter? Sign up, tune into the things you care about, and get updates as they happen.

    Sign up
    Have an account? Log in »

    Two-way (sending and receiving) short codes:

    Country Code For customers of
    United States 40404 (any)
    Canada 21212 (any)
    United Kingdom 86444 Vodafone, Orange, 3, O2
    Brazil 40404 Nextel, TIM
    Haiti 40404 Digicel, Voila
    Ireland 51210 Vodafone, O2
    India 53000 Bharti Airtel, Videocon, Reliance
    Indonesia 89887 AXIS, 3, Telkomsel, Indosat, XL Axiata
    Italy 4880804 Wind
    3424486444 Vodafone
    » See SMS short codes for other countries

    Confirmation

     

    Welcome home!

    This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.

    Tweets not working for you?

    Hover over the profile pic and click the Following button to unfollow any account.

    Say a lot with a little

    When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.

    Spread the word

    The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.

    Join the conversation

    Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.

    Learn the latest

    Get instant insight into what people are talking about now.

    Get more of what you love

    Follow more accounts to get instant updates about topics you care about.

    Find what's happening

    See the latest conversations about any topic instantly.

    Never miss a Moment

    Catch up instantly on the best stories happening as they unfold.

    1. GeorgeWilliamHerbert‏ @GeorgeWHerbert 28 Jul 2017
      • Report Tweet
      Replying to @ArmsControlWonk @Nateisgood and

      But very round.

      3 replies 0 retweets 3 likes
    2. Martin “Doomsday” Pfeiffer (⧖)  🏳️‍🌈‏ @NuclearAnthro 28 Jul 2017
      • Report Tweet
      Replying to @GeorgeWHerbert @ArmsControlWonk and

      And not the most efficient use of materials? For a fizmat constrained country...

      2 replies 0 retweets 2 likes
    3. GeorgeWilliamHerbert‏ @GeorgeWHerbert 28 Jul 2017
      • Report Tweet
      Replying to @NuclearAnthro @ArmsControlWonk and

      It's.. more that the implosion efficiency drops so much or explosive mass climbs so high. Practically yes more fizmat needed for deliverable

      1 reply 0 retweets 4 likes
    4. Martin “Doomsday” Pfeiffer (⧖)  🏳️‍🌈‏ @NuclearAnthro 28 Jul 2017
      • Report Tweet
      Replying to @GeorgeWHerbert @ArmsControlWonk and

      OMFG! This totally explains a line in one of the docs earlier this week in a Theoretical Megaton Group meeting about needing too much HE!!!

      1 reply 0 retweets 5 likes
    5. GeorgeWilliamHerbert‏ @GeorgeWHerbert 28 Jul 2017
      • Report Tweet
      Replying to @NuclearAnthro @ArmsControlWonk and

      Yeah. A Fat Man sized assembly count do it but...

      1 reply 0 retweets 2 likes
    6. Cheryl Rofer‏ @CherylRofer 28 Jul 2017
      • Report Tweet
      Replying to @GeorgeWHerbert @NuclearAnthro and

      Do any of y'all know what's in that alleged Chinese design from AQ Khan?

      3 replies 0 retweets 5 likes
    7. Martin “Doomsday” Pfeiffer (⧖)  🏳️‍🌈‏ @NuclearAnthro 28 Jul 2017
      • Report Tweet
      Replying to @CherylRofer @GeorgeWHerbert and

      HE I believe.

      1 reply 0 retweets 2 likes
    8. Cheryl Rofer‏ @CherylRofer 28 Jul 2017
      • Report Tweet
      Replying to @NuclearAnthro @GeorgeWHerbert and

      Yes, and...?

      2 replies 0 retweets 3 likes
    9. Jeffrey Lewis‏Verified account @ArmsControlWonk 28 Jul 2017
      • Report Tweet
      Replying to @CherylRofer @NuclearAnthro and

      What I recall is HE, HEU and a uranium deuteride initiator.

      2 replies 0 retweets 6 likes
    10. Martin “Doomsday” Pfeiffer (⧖)  🏳️‍🌈‏ @NuclearAnthro 28 Jul 2017
      • Report Tweet
      Replying to @ArmsControlWonk @CherylRofer and

      I think that chalkboard is how I learned about that.pic.twitter.com/wbAkVcZls0

      1 reply 0 retweets 7 likes
      Alex Wellerstein‏Verified account @wellerstein 29 Jul 2017
      • Report Tweet
      Replying to @NuclearAnthro @ArmsControlWonk and

      Chalkboard bomb is also levitated, it looks like...

      6:01 AM - 29 Jul 2017
      • 4 Likes
      • Albert Lunde GeorgeWilliamHerbert Martin “Doomsday” Pfeiffer (⧖) 🏳️‍🌈 Rachel Becker
      1 reply 0 retweets 4 likes
        1. New conversation
        1. Alex Wellerstein‏Verified account @wellerstein 29 Jul 2017
          • Report Tweet
          Replying to @wellerstein @NuclearAnthro and

          Here is one minor observation about the chalkboard bomb that I haven't seen made yet: the casing looks cribbed from a Soviet publication?pic.twitter.com/F348HA60d6

          1 reply 1 retweet 10 likes
        2. GeorgeWilliamHerbert‏ @GeorgeWHerbert 29 Jul 2017
          • Report Tweet
          Replying to @wellerstein @NuclearAnthro and

          That's a pretty fake design though...

          2 replies 0 retweets 2 likes
        3. Alex Wellerstein‏Verified account @wellerstein 29 Jul 2017
          • Report Tweet
          Replying to @GeorgeWHerbert @NuclearAnthro and

          The Soviet one? Definitely, it's pretty silly. But I find tracing genealogies of the drawings useful nonetheless:http://blog.nuclearsecrecy.com/2012/02/17/friday-image-nuclear-bombs-soviet-style-1958/ …

          0 replies 0 retweets 5 likes
          4. End of conversation

      Loading seems to be taking a while.

      Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

        Promoted Tweet

        false

        • © 2019 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Imprint
        • Cookies
        • Ads info