Fly as in what birds and aeroplanes do, fly as in the insects, or fly as in “your fly is down”?

edit: I mean the word fly (as in its use in language), not the act of flying!

  • DagwoodIII@piefed.social
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    2 days ago

    The term “fly” in the context of pants riginates from the Old English word “flowan,” meaning to flow. It refers to the piece of fabric that covers the zipper, not the zipper itself. The term gained popularity in the 19th century when tailors began using it to describe a flap of cloth attached at one end to cover an opening in a garment. This usage was particularly noted for its association with the right side of men’s trousers, distinguishing it from women’s garments, which may have different openings

    edit =from the interwebs, not my words

    • dual_sport_dork 🐧🗡️@lemmy.world
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      2 days ago

      I’ll bet you this also has something to do with the terminology for the rain fly on a tent, most of which have the same kind of flap covering the zippers and/or openings.

        • dual_sport_dork 🐧🗡️@lemmy.world
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          2 days ago

          Every rain fly on pretty much every modern tent has multiple zippers. Full coverage flies (flys?) are now the norm and these require some way to open them in order to let you in and out of the tent, which is inevitably a zipper. Even before this in the canvas tent era, closures may have been done with buttons rather than zippers but the opening points still had fold-over flaps to keep rainwater out, similar in construction to the ones on your pants.

          I’ve only ever owned one tent in my life that did not have a full coverage fly and thus did not require any hardware on the fly itself. It still had folded over gusset flaps on it in various places, and that tent was also crap and was not designed to withstand weather.

          If you are making your own “fly” out of a tarp or similar, that’s different.

          • village604@adultswim.fan
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            1 day ago

            I’m not sure what you’re talking about. Looking up camping tents, the vast majority have the classic pitched rain fly.

            But regardless, that style of rain fly is pretty new, so it’s irrelevant to the reason they were named flies in the first place. I doubt it was common for tents to even have zippers when the term rain fly was coined.

            Edit: Looking into it further, the term rain fly was coined before the term fly was used to describe the fabric covering the zipper. It looks like calling the fabric covering the zipper a fly came from using fly to describe the fabric covering a tent.

  • Mostly_Gristle@lemmy.world
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    2 days ago

    Almost certainly fly as in birds came first. Trousers with a fly are a pretty recent fashion development, like within the last 200 years or so, whereas people have been watching birds since before the invention of language.

  • TheMetaleek@sh.itjust.works
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    2 days ago

    Insects fly the same as birds and aeroplanes do, they create air flow around a rounded wing edge, wich causes the air upward of the wing to flow faster than the air under, thus creating a lifting force. And to answer origins, to our knowledge insects were by far the first living flying things, around 300 million years ago with dragonfly relatives. And the group including flies (diptera) came much later, around 240 million years ago !

    • sbird@sopuli.xyzOP
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      2 days ago

      I meant fly as in the insect you would call a fly (the name, not the act of flying itself). Very cool that insects were the first flying thing though!

        • sbird@sopuli.xyzOP
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          2 days ago

          Wait a minute, do microorganisms that tracel in the air count as “flying”? Are there any microorganisms with mini “wings” that flap through the air? I remember a video where mayflies (I think that’s the name?) basically swim through the air, so I wonder how a microorganism will do…

          Even if microbes don’t flap little wings, I would argue it still counts as flying as kites are described as flying and they don’t have any wings at all. You also fly in a hot air balloon, and that definitely doesn’t have any wings, it’s effectively floating in air, but we still call it flying. Therefore, microbes are the first flying thing (?)

          • TheMetaleek@sh.itjust.works
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            2 days ago

            Depends on the scale. Really tiny microorganism living in the air do not fly, as in they have no active mecanism to physically interact with their environment to move in any way. They just follow the air currents at seemingly random (the exact word is brownian), kinf of like particles of dust that you see in a ray of light. It is not defined as flying and not studied as such