Skip to content
  • Home Home Home, current page.
  • Moments Moments Moments, current page.

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
zeynep's profile
zeynep tufekci
zeynep tufekci
zeynep tufekci
Verified account
@zeynep

Tweets

zeynep tufekciVerified account

@zeynep

Complex systems, wicked problems. Society, technology, science and more. @UNC professor. @NYTimes columnist. My newsletter is @insight: http://www.theinsight.org 

floating in a most peculiar way
theinsight.org
Joined August 2009

Tweets

  • © 2022 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • 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. Prof. Jose-Luis Jimenez‏Verified account @jljcolorado 20 Dec 2021
      Replying to @Merz @kprather88 and

      Prof. Jose-Luis Jimenez Retweeted Prof. Jose-Luis Jimenez

      It is physics. Droplets are projectiles, larger than 0.3 mm when talking. They are unaffected by air currents, unless it is extremely windy. So they'll do the same indoors and outdoors. There are papers on this, but I reviewed the physics on this thread:https://twitter.com/jljcolorado/status/1292880342227984385 …

      Prof. Jose-Luis Jimenez added,

      Prof. Jose-Luis JimenezVerified account @jljcolorado
      1/ Aerosols, droplets, & “flexible droplets” Trying to clarify key aspects. Details complex, give bottom lines 1st: Bottom line 1: If fall within 1-2 m of the person (WHO or CDC droplets), then **have to** infect by ballistic impact (“angry birds”). Cannot infect by inhalation pic.twitter.com/rixqF4iSrI
      Show this thread
      1 reply 10 retweets 118 likes
    2. Prof. Jose-Luis Jimenez‏Verified account @jljcolorado 20 Dec 2021
      Replying to @jljcolorado @Merz and

      The key is that if they can be inhaled, they are < 100 microns. And then they stay on the air > 1 m and do NOT behave like ballistic droplets. Sometimes ppl resort to droplets that behave like aerosols, but then they are still "droplets". But there is no such thing, unphysical

      2 replies 2 retweets 78 likes
    3. Alex Merz‏ @Merz 20 Dec 2021
      Replying to @jljcolorado @kprather88 and

      Nothing in that thread explains why you'd expect outdoor transmission to drop by only 2x if the mechanism is droplet transmission.

      1 reply 0 retweets 1 like
    4. Alex Merz‏ @Merz 20 Dec 2021
      Replying to @Merz @jljcolorado and

      Among other things, people tend to be further apart outdoors, and they tend to be outdoors when it's sunny. Pyrimidine dimers are a thing.

      5 replies 0 retweets 2 likes
    5. Prof. Jose-Luis Jimenez‏Verified account @jljcolorado 20 Dec 2021
      Replying to @Merz @kprather88 and

      I have not found data to substantiate that the conversational distance is higher outdoors than outdoors. And UV radiation inactivates the virus, but in 5-30 min, too slow too matter.

      6 replies 3 retweets 97 likes
    6. Alex Merz‏ @Merz 20 Dec 2021
      Replying to @jljcolorado @kprather88 and

      Halftimes far shorter than 5-30 minutes have been reported.

      3 replies 0 retweets 2 likes
    7. Alex Merz‏ @Merz 20 Dec 2021
      Replying to @Merz @jljcolorado and

      "I have not found data to substantiate that the conversational distance is higher outdoors than outdoors." And that's just silly.

      4 replies 0 retweets 3 likes
    8. gardengirl778‏ @gardengirl778 20 Dec 2021
      Replying to @Merz @jljcolorado and

      No, it isn’t. Linguists study how far apart people in various cultures stand when speaking, a well studied topic and never in all my reading on that topic have any noted outdoors people stand further when speaking to one another in normal conversation.

      1 reply 0 retweets 14 likes
    9. zeynep tufekci‏Verified account @zeynep 20 Dec 2021
      Replying to @gardengirl778 @Merz and

      Not just that, because this has indeed been studied very well, interpersonal closeness produces *less* discomfort outdoors so people can get closer, and decades of research and measurement find that there is no indoor close/outdoor apart rule.

      3 replies 0 retweets 20 likes
    10. Prof. Jose-Luis Jimenez‏Verified account @jljcolorado 20 Dec 2021
      Replying to @zeynep @gardengirl778 and

      Do you have any links to that research? I've looked for it but not found it, probably didn't quite know how to search, keywords etc.

      1 reply 0 retweets 7 likes
      zeynep tufekci‏Verified account @zeynep 20 Dec 2021
      Replying to @jljcolorado @gardengirl778 and

      Yep. Will email lit review. "Conversational space" and "personal space" are keywords—it's a very well-studied area of sociolinguistics, and despite people making up stuff on this thread, there's decades of research. Varies by culture, gender-grouping, noise, vertical space etc.

      5:09 PM - 20 Dec 2021
      • 18 Likes
      • R Subramanian, PhD (he/him) Elise Miller tyrachosaurusrex Alex Merz Postcards from the burbs.... Emile Borduas 🇨🇦 Caffiene Punk CCITT foxgrrl.32bis Kim Coronado
      1 reply 0 retweets 18 likes
        1. New conversation
        2. Prof. Jose-Luis Jimenez‏Verified account @jljcolorado 20 Dec 2021
          Replying to @zeynep @gardengirl778 and

          Maybe we should write a short paper on the outdoor / indoor stuff, now that you brought up this evidence? Obviously some like @merz dismiss it outright. I didn't spend a lot of effort on it bc it seemed so obvious!

          3 replies 1 retweet 19 likes
        3. zeynep tufekci‏Verified account @zeynep 20 Dec 2021
          Replying to @jljcolorado @gardengirl778 and

          Sure. I knew of the topic from sociolinguistics, but I looked it up at more length recently because, like you, I spent a lot of time actually looking for evidence *in favor* of droplets being the main route. This was one of the potential mediators of the epidemiology data.

          1 reply 0 retweets 8 likes
        4. Show replies

      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

        • © 2022 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Cookies
        • Ads info