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. Martin “Doomsday” Pfeiffer (⧖)  🏳️‍🌈‏ @NuclearAnthro Mar 31
      • Report Tweet

      Defense Civil Preparedness Agency closed it's 1973 Attack Environment Manual section on post-fallout shelter life with this very...optimistic...cartoon.pic.twitter.com/ieKYsiWsxa

      4 replies 3 retweets 26 likes
      Show this thread
    2. Martin “Doomsday” Pfeiffer (⧖)  🏳️‍🌈‏ @NuclearAnthro Mar 31
      • Report Tweet

      Defense Civil Preparedness Agency estimate of notional fallout dosage curves from a Soviet Attack in 1973.pic.twitter.com/j61zLbxtqn

      3 replies 2 retweets 16 likes
      Show this thread
    3. Alex Wellerstein‏Verified account @wellerstein Mar 31
      • Report Tweet
      Replying to @NuclearAnthro

      Note that this is a dose *rate* after 1 week. To give you a sense of what this means, if your dose is 1 R/hr at one week, it means that the initial source intensity was around 1000 R/hr at 1 hr. It means if you were without any shelter, you'd have picked up 3,600+ R in that time.

      2 replies 1 retweet 9 likes
    4. Jennifer Eager‏ @JennyImpatient Mar 31
      • Report Tweet
      Replying to @wellerstein @NuclearAnthro

      So in the 10 to 50 rad zone, after a week... Would any multicellular life survive in those zones?

      1 reply 0 retweets 1 like
    5. Alex Wellerstein‏Verified account @wellerstein Apr 1
      • Report Tweet
      Replying to @JennyImpatient @NuclearAnthro

      So working backwards, for 10 R/hr after one week, that's an initial activity of something like 8,000 R/hr. For 50 R/hr, that's around 35,000 R/hr. Accumulated activity on the ground is 55K-242K R for those values. So... I'm gonna go with "probably not."

      1 reply 0 retweets 5 likes
    6. Alex Wellerstein‏Verified account @wellerstein Apr 1
      • Report Tweet
      Replying to @wellerstein @JennyImpatient @NuclearAnthro

      Alex Wellerstein Retweeted Alex Wellerstein

      63K R will kill all plants, full stop. At 50 K you might have some really scrubby things. Trees die much earlier than those levels. Maybe some microscopic stuff can take that level? But complex organisms, I don't think so.https://twitter.com/wellerstein/status/352145474737803264 …

      Alex Wellerstein added,

      Alex WellersteinVerified account @wellerstein
      How much radiation does it take to kill a forest? A LOT! And yes, they did experiments on this in the Cold War... pic.twitter.com/ZpGGvKYQR6
      3 replies 3 retweets 10 likes
      Alex Wellerstein‏Verified account @wellerstein Apr 1
      • Report Tweet
      Replying to @wellerstein @JennyImpatient @NuclearAnthro

      (It's times like this that I'm glad I already have a spreadsheet with these kinds of numbers already in it! Make me seem very knowledgable, when it's really just fiddling with the "initial dose" number until the time after one week matches up right!)

      1:08 PM - 1 Apr 2019
      • 2 Likes
      • Jennifer Eager Martin “Doomsday” Pfeiffer (⧖) 🏳️‍🌈
      0 replies 0 retweets 2 likes

      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