• @[email protected]
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    932 months ago

    It’s the cooling of silica (really, any material) that makes it a glass, and even then, transparency in the visual wavelength is not automatically certain.

      • @[email protected]
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        602 months ago

        Good example. Obsidian is apparently 70% silica. Iron is apparently what makes it black in color. If it’s thin enough, it is translucent.

        If you cool pure silica slowly enough, with impurities to cause seeding, you will get tons of crystals, not a single glass, that won’t be transparent.

  • 7heo
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    2 months ago

    3090 degrees is above its boiling point (which is 2950 degrees).

    So it doesn’t become “clear”, it literally vaporises.

    • @[email protected]
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      2 months ago

      You are talking Celsius while the meme is likely referring to F (you can tell because Obama)

      • Spzi
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        12 months ago

        This ambiguity is what I had in mind when I read “let me be clear”. Though now I get it.

  • @[email protected]
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    222 months ago

    I wonder how they figured that out

    Did molten lava touch sand and then they were like 😳

  • @lurch
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    72 months ago

    first it becomes glowy orange tho