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Question Of The Day

What form of matter is glass?

By Recyclebank |

What do you know? Try your hand at the question of the day!

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  • Marlyn R. 25 days ago
    Great questions. When R we getting more ? Needs more reward articles also.
  • Sharon A. 27 days ago
    Questions were good to know about waste and what materials are left in cans.
    That one took me for a surprise.Keep educating the public on Recycling we need it. Thank You. SHARON WORKINPROCESS
  • Gerald B. 1 month ago
    Good subject, thanks for the reference. I'll go check the glass shelves in my curio cabinet to see if they're sagging.
  • ALICIA M. 1 month ago
    Challenging questions
  • Heather B. 1 month ago
    I'm pretty sure that the amorphous solid idea of glass has been debunked. Glass is a solid. It just solidifies a little slowly, and in in certain clumps at first. But it becomes solid and does not continue to flow slowly over time. The evidence usually used for that idea is the thicker window panes at the bottom of old glass windows, but they were intentionally constructed that way.
    • Celia R. 1 month ago
      I'm not sure that glass was deliberately constructed with an uneven thickness in Europe. The technology for making sheet glass was simply less developed back then. Ancient glass in other cultures of the same age doesn't show the same phenomenon. Personally, I think the old stained glasses were much more beautiful than modern glass: they had personality and individuality.
    • BenD@Recyclebank 1 month ago

      Thanks Heather, 

      It's true, older glass is thicker at the bottom due to the way it was manufactured. Here's a good article explaining the most recent scientific work on the definition of glass as a state of matter. It seems to me like glass is a material that is in a constant state of flux, which is pretty cool!

    • Heather B. 1 month ago
      Ah, interesting. I was looking at research from 2015, which I thought had laid the issue to rest, but it does look like the debate is still on.
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