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DanielleFong's profile
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@DanielleFong

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@DanielleFong

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Empire of the Future
Joined February 2008

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    1. Stewart Brand‏Verified account @stewartbrand 30 Jun 2020

      Stewart Brand Retweeted James Gleick

      If this air-clearing technique really proves out, it could transform the use of public indoors space.https://twitter.com/JamesGleick/status/1277956274009837573 …

      Stewart Brand added,

      James GleickVerified account @JamesGleick
      I believe this is reliable and significant: far ultraviolet (UVC) light at a specific wavelength—invisible to humans—could be used indoors to kill coronavirus in the air. Specialized lamps could be mass-produced for use in restaurants, theaters, and gyms. https://www.nature.com/articles/s41598-020-67211-2 … pic.twitter.com/svuuhbxQdR
      Show this thread
      9 replies 16 retweets 67 likes
    2.  🤷🏻‍♀️‏ @DanielleFong 30 Jun 2020
      Replying to @stewartbrand

      hey @styropyro_ @adammunich @ramez @mljmljmlj what do you think?

      1 reply 1 retweet 0 likes
    3. Drake Anthony  ⚡‏ @styropyro_ 30 Jun 2020
      Replying to @DanielleFong @stewartbrand and

      Just skimmed through the paper and it certainly looks interesting, but I'd be concerned about ozone/NOx generation by those high energy photons

      1 reply 1 retweet 3 likes
    4.  🤷🏻‍♀️‏ @DanielleFong 30 Jun 2020
      Replying to @styropyro_ @stewartbrand and

      hm http://www.uvresources.com/blog/the-ultraviolet-germicidal-irradiation-uv-c-wavelength/ …pic.twitter.com/WXZ7Xtzhmy

      1 reply 1 retweet 2 likes
    5.  🤷🏻‍♀️‏ @DanielleFong 30 Jun 2020
      Replying to @DanielleFong @styropyro_ and

      *according to this* 253.7nm UV-C lamps do not produce Ozone and in fact destroy ozone.

      1 reply 1 retweet 1 like
    6. Drake Anthony  ⚡‏ @styropyro_ 30 Jun 2020
      Replying to @DanielleFong @stewartbrand and

      The nature paper is for 222nm light though, which is more energetic than the homolytic bond dissociation energy of diatomic oxygen (I calculate 240nm.) From that I'd expect 222nm light to be ozone/NOx producing, but I may be missing other factors

      2 replies 0 retweets 1 like
    7.  🤷🏻‍♀️‏ @DanielleFong 30 Jun 2020
      Replying to @styropyro_ @stewartbrand and

      even though it's more energetic, I think that the 253.7nm could still cook the virus?

      1 reply 0 retweets 0 likes
    8. Drake Anthony  ⚡‏ @styropyro_ 30 Jun 2020
      Replying to @DanielleFong @stewartbrand and

      Yeah it should, but considering most infections are from close proximity to an infected person, I don't see UV lamps as a great way to mitigate that risk. IIRC SARS-CoV-2 doesn't stay infectious very long in the air. That's not to say UV lamps are useless here though

      1 reply 0 retweets 0 likes
    9.  🤷🏻‍♀️‏ @DanielleFong 30 Jun 2020
      Replying to @styropyro_ @stewartbrand and

      hm! that is not my understanding. my understanding is that the virus lasts for many days, can be deactivated by UV / sunlight. but that infections via indoors / AC environments is spiking, and that it's about the amount of time you spend in a space with a lot of viral load.

      2 replies 0 retweets 0 likes
    10. Drake Anthony  ⚡‏ @styropyro_ 30 Jun 2020
      Replying to @DanielleFong @stewartbrand and

      Personally, I'll take the preventive measure of "extreme social isolation" for the time being 😂

      1 reply 1 retweet 0 likes
       🤷🏻‍♀️‏ @DanielleFong 30 Jun 2020
      Replying to @styropyro_ @stewartbrand and

      good idea; i had already fled the country!

      12:50 PM - 30 Jun 2020
      • 2 Likes
      • Drake Anthony ⚡ Ramez Naam
      1 reply 0 retweets 2 likes
        1. New conversation
        2.  ✨𝒿𝑜𝓊𝓁𝑒  ⚡️‏ @gigaj0ule 1 Jul 2020
          Replying to @DanielleFong @styropyro_ and

          I agree with styro, UV-C will cause lots of oxyradicals to be made. However there is some promising research around using UV-B for sterilization. My suggestion though is that high volume air movement (box fan) in addition to UV-B light is what would be most effective for SARS-2.

          2 replies 0 retweets 0 likes
        3.  ✨𝒿𝑜𝓊𝓁𝑒  ⚡️‏ @gigaj0ule 1 Jul 2020
          Replying to @gigaj0ule @DanielleFong and

          The bigger problem is public transport. If someone sneezes next to you even with fans there's not much you can do.

          1 reply 0 retweets 1 like
        4. Show replies

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