• otacon239@lemmy.world
      9·
      2 个月前

      Suppose you were in this situation and suspected something. I’d imagine the space behind it would be totally dark, so what would be a safe way to check if there’s a gap in between without breaking the glass?

      • vrighter@discuss.tchncs.de
        25·
        2 个月前

        there are no “one-way” mirrors. You just need to make your side darker than the other side (there’s a reason the observation side of a two-way mirror is never brightly lit, but the interrogation room is)

        Tldr: put your face right up against it and use your hands to block out as much light as you can

        • SaveTheTuaHawk@lemmy.caEnglish
          3·
          2 个月前

          there are no “one-way” mirrors. You just need to make your side darker than the other side

          15 upvotes? Really? Mirrors are painted on the back with opaque paint.

          Are we cross posting this to a flat earth science forum?

          • FluffMongo@lemmy.world
            8·
            2 个月前

            but a one-way mirror (also known as a two-way mirror) is one that you can see through in one direction

      • GuyFawkes@midwest.socialEnglish
        10·
        2 个月前

        I read a long time ago that putting something flat against the mirror will show you. I think if the mirror is legit you’ll see the reflection directly on the surface, if it’s two way the reflection will look like it’s inside the glass.

        But I’ve never had the chance to actually test that, so take it with a grain of salt.

        Edit: Turns out this is incorrect; thanks to everyone for educating me!

        • qupada@fedia.io
          15·
          2 个月前

          It would be the other way around, if at all.

          “First-surface” mirrors where the reflective layer is on the front of the glass are quite fragile, so wouldn’t typically used for residential applications (you’d remove the reflective coating by cleaning it).

          A regular mirror has the reflective surface on the back of the glass (which is then is further coated with a protective paint), leading to the effect you describe.

          I don’t however know enough to say one way or the other whether a surveillance mirror would becessarily be a first-surface mirror.

        • TeamAssimilation@infosec.pub
          14·
          2 个月前

          This is ancient advice for two-way mirrors, IIRC nowadays even legit mirrors can reflect directly from the front instead of the back. In this age of spy cameras this is mostly irrelevant.

          Another tip was shining a bright light to illuminate the supposedly dark room on the other side, which again, would be way more expensive than a smoke detector spy camera.

          • kattfisk@lemmy.dbzer0.com
            4·
            2 个月前

            Yes, darkening your room and then pushing a bright light up against the one-way, taking care to not have it leak into your room, should make the other room brighter so you can see it.

            Not that this is a one-way mirror anyway.

        • SaveTheTuaHawk@lemmy.caEnglish
          5·
          2 个月前

          think if the mirror is legit you’ll see the reflection directly on the surface, if it’s two way the reflection will look like it’s inside the glass.

          scientific use mirrors are front mirrors, the metal is deposited on the outer surface. They are delicate and difficult to clean.

          Every household mirror is rear coated, and then painted to protect the metal from oxidation.

  • philpo@feddit.org
    100·
    2 个月前

    Guessing this is a hotel bathroom by the looks of it.

    Then it very likely has a mirror with integrated heating. I have one myself and love it.

  • coldasblues@sh.itjust.worksEnglish
    40·
    2 个月前

    Don’t believe any of the other comments, this is clearly a one-way mirror with a camera inside. That conspiracy theory you’ve been thinking about a lot lately is true, and even worse they know you are on to them. Remember that creak in the floorboards you dismissed as the house settling? Footsteps. The way your coffee mug was turned slightly counterclockwise this morning? Intentional. They watch you when you sleep, and know how much time you spend looking at your phone.

    Or it’s what the top comment said. Sleep tight!

    • Asetru@feddit.org
      7·
      2 个月前

      Or it’s what the top comment said. Sleep tight!

      Writing this in the top comment doesn’t help, like, at all…

  • maniacalmanicmania@aussie.zoneEnglish
    32·
    2 个月前

    For anyone who wants to achieve the same effect take a dry bar of soap and rub some into an area of a mirror in whatever shape you like (circle, square etc). Then buff it out with a dry soft towel or cloth until you can no longer see the soap. Next time you take a shower that part of the mirror won’t be fogged up. Reapply soap and buff out every couple weeks or so if you want it to stay that way.

    • notarobot@lemmy.zip
      5·
      2 个月前

      I wanted to write “i see you” before I left my last apartment. Didn’t get the nerve to do it because I worried someone would slip and fall

    • Cassanderer@thelemmy.club
      2·
      2 个月前

      Yes for anybody wearing goggles or glasses outside if you rub soap like dish soap and circles on the lenses it will prevents them from fogging up and will not streak because the circles thing. Vinegar sort of works too but doesn’t stick on as well as soap.

  • kattfisk@lemmy.dbzer0.com
    29·
    2 个月前

    I had this happen in a hotel, and being curious I removed the mirror, and yes there was a hole in the wall behind it, no there wasn’t a camera there. It was just were they had ran the wiring for the lights on the mirror.

    It would make sense that it serves like an access hatch to a terminal block that feeds the whole room. It’s simple, costs nothing, is easy to get to (compared to having it sealed in the wall), protected from splashing and prying guests, and close to where you want most lights and outlets.

  • elgordino@fedia.io
    20·
    2 个月前

    These are such a good idea. It works by having a heater behind the mirror which prevents the condensation.

    Ps. Excuse the multiple posts. fedia.io was having a moment. I’ve deleted them now

  • LOGIC💣@lemmy.world
    17·
    2 个月前

    There is probably a hole cut into the wall there.

    If you want an innocent explanation, then it’s entirely possible that there used to be a medicine-cabinet-style mirror there. It looks like it’s about that size and would fit in that location. Those medicine cabinets are recessed into the wall and so they require a hole to be cut in the wall. When they installed the large mirror, they didn’t think it was worth it to repair the hole, since they were covering it up with a mirror.

    If the hotel is fairly old, it might have had something like that in the past.

    But since there is no way of knowing that for sure, if I was in that room, I’d assume there’s a camera behind there, too.

  • 0ops@piefed.zipEnglish
    14·
    2 个月前

    Maybe somebody’s stashing delicious freshly baked goods back there?

  • Adulated_Aspersion@lemmy.world
    10·
    2 个月前

    Just posting to say I was here when everyone replied with “These are such a good idea. It works by having a heater behind the mirror which prevents the condensation.”

    • elgordino@fedia.io
      1·
      2 个月前

      Hahaha I just saw this. fedia.io was having a moment and posted my comment several times and everyone else has just run with it. Quality!