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graveolens's profile
Owen Maresh
Owen Maresh
Owen Maresh
@graveolens

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Owen Maresh

@graveolens

Mathematics Sorceror (sensory alchemist) at the Arctangent Transpetroglyphics Algra Laboratory (ATAL), I transmute mathematics into living rainbows.

somerville, ma
owen.maresh.info
Joined April 2010

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    1. John Carlos Baez‏ @johncarlosbaez 21 Apr 2019
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      Ozone is O_3, an unstable and highly reactive form of oxygen. "Oxozone" is a hypothetical molecule, O_4. Its existence was first predicted in 1924 by Gilbert Lewis, who was trying to explain the anomalous magnetic properties of liquid oxygen. (continued)pic.twitter.com/QONxsD3Zoi

      4 replies 37 retweets 108 likes
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    2. John Carlos Baez‏ @johncarlosbaez 21 Apr 2019
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      Liquid oxygen is blue and "paramagnetic" - its spins line up with a magnetic field, though not nearly as much as iron. Strangely it becomes more magnetic, per weight, when diluted by mixing it with liquid nitrogen! Gilbert guessed it forms O_4 when not diluted. (continued)pic.twitter.com/rxBbT5twjm

      1 reply 4 retweets 19 likes
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    3. John Carlos Baez‏ @johncarlosbaez 21 Apr 2019
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      Chemists now think liquid oxygen doesn't have stable O_4 molecules. Instead, O_2 molecules tend to form short-lived pairs with antiparallel spins when they bump into each other - so, liquid oxygen becomes less magnetic when it's denser! (continued)https://www.youtube.com/watch?v=Isd9IEnR4bw …

      1 reply 3 retweets 27 likes
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    4. John Carlos Baez‏ @johncarlosbaez 21 Apr 2019
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      Calculations have predicted two possible forms of oxozone, both unstable: a pinwheel and a ring. Sulfur, down one notch in the periodic table, also forms a ring-shaped S_4. But it seems liquid oxygen contains neither of these! Instead, paired O_2 molecules. (continued)pic.twitter.com/MZOv29F9hA

      1 reply 6 retweets 18 likes
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    5. John Carlos Baez‏ @johncarlosbaez 21 Apr 2019
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      Solid sulfur forms ring-shaped S_8 molecules - this is its most common form. Solid oxygen also forms ring-shaped O_8 molecules - but only under extreme pressure. And it's not yellow - it's red! It's called "ε oxygen" or "red oxygen". I want some for my birthday.pic.twitter.com/A5wlWkQNPY

      4 replies 10 retweets 33 likes
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      Owen Maresh‏ @graveolens 22 Apr 2019
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      Replying to @johncarlosbaez

      catenation!

      5:18 AM - 22 Apr 2019
      0 replies 0 retweets 0 likes

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