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wellerstein's profile
Alex Wellerstein
Alex Wellerstein
Alex Wellerstein
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@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. 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
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    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
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    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
      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
      1:05 PM - 1 Apr 2019
      • 3 Retweets
      • 10 Likes
      • Evan Schultheis 2ftg ./amygdalahijack.sh Karen Lebens Divayth Fyr Dr Cathryn Townsend Jennifer Eager ☢Anti-Protons☢🏳️‍🌈📎⚧🐱🇺🇸🌈🌊 Dan claidheamh
      3 replies 3 retweets 10 likes
        1. Martin “Doomsday” Pfeiffer (⧖)  🏳️‍🌈‏ @NuclearAnthro Apr 1
          • Report Tweet
          Replying to @wellerstein @JennyImpatient

          Martin “Doomsday” Pfeiffer (⧖)  🏳️‍🌈 Retweeted Martin “Doomsday” Pfeiffer (⧖)  🏳️‍🌈

          Gotta experiment!https://twitter.com/nuclearanthro/status/1081388434864754688?s=21 …

          Martin “Doomsday” Pfeiffer (⧖)  🏳️‍🌈 added,

          Martin “Doomsday” Pfeiffer (⧖)  🏳️‍🌈 @NuclearAnthro
          Repost but germane to thread: In the 1950s and 1960s Brookhaven did experiments that looked at how intense radiation & high levels of radioactive fallout from a nuclear war might impact forests and plant life. Surprise: IT KILLS THEM. pic.twitter.com/YSpxpZ1ZnJ
          Show this thread
          0 replies 0 retweets 2 likes
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        1. Alex Wellerstein‏Verified account @wellerstein Apr 1
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          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!)

          0 replies 0 retweets 2 likes
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        2.  ☢Anti-Protons ☢ 🏳️‍🌈 📎 ⚧ 🐱 🇺🇸 🌈 🌊‏ @Antiproton_com Apr 1
          • Report Tweet
          Replying to @wellerstein @NuclearAnthro @JennyImpatient

          OMG 630 Gy/hr!! How did they even get that source into place?! *Also, converting ancient grandpa roentgens into 21st century units is a pain lol

          1 reply 0 retweets 3 likes
        3. Funranium Labs‏ @funranium Apr 1
          • Report Tweet
          Replying to @Antiproton_com @wellerstein and

          For gamma, a Roentgen is a rad is a rem so that conversion is easy. As long as you can remember "divide by 100" to get from the cgs units to the mks SI units, you're groovy.

          1 reply 0 retweets 7 likes
        4.  ☢Anti-Protons ☢ 🏳️‍🌈 📎 ⚧ 🐱 🇺🇸 🌈 🌊‏ @Antiproton_com Apr 1
          • Report Tweet
          Replying to @funranium @wellerstein and

          I won't hold it against the Olde Tyme science folk as those legacy units were accepted back then. Luckily, SI replaced them so I don't have to figure out electrical current in dry air and all that other goofy stuff lolpic.twitter.com/xINTbmHw39

          1 reply 0 retweets 2 likes
        5. Jean-Marc Desperrier‏ @jm_desp Apr 1
          • Report Tweet
          Replying to @Antiproton_com @funranium and

          The change to the newer units happened at the same time for everybody. Only the Americans stubbornly still can't update 40 years later. That's really strange.

          1 reply 0 retweets 1 like
        6. Funranium Labs‏ @funranium Apr 1
          • Report Tweet
          Replying to @jm_desp @Antiproton_com and

          Partly because our regulations are still written in them. It is so very, very unpleasantly hard to get the DOE order updated. At an operational level, regardless of the regs, we're operating on SI.

          2 replies 0 retweets 3 likes
        7.  ☢Anti-Protons ☢ 🏳️‍🌈 📎 ⚧ 🐱 🇺🇸 🌈 🌊‏ @Antiproton_com Apr 1
          • Report Tweet
          Replying to @funranium @jm_desp and

          Incidentally, I need to put one of those sources in my front yard to get rid of my grass LOL Of course it will fricassee the squirrels and turn my local birds into Wonder roasts, but at least I won't have to mow the lawn LOLpic.twitter.com/5iBdpyNSP2

          1 reply 0 retweets 1 like
        8. Martin “Doomsday” Pfeiffer (⧖)  🏳️‍🌈‏ @NuclearAnthro Apr 1
          • Report Tweet
          Replying to @Antiproton_com @funranium and

          That. Gif.

          1 reply 0 retweets 1 like
        9. Jennifer Eager‏ @JennyImpatient Apr 1
          • Report Tweet
          Replying to @NuclearAnthro @Antiproton_com and

          I sort of hope that gif doesn’t have any relevance to what could happen to people if there’s a nearby nuclear detonation, but from all I’ve read, I get the sense that it does.

          2 replies 0 retweets 1 like
        10. 5 more replies

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