I just realized while cooking that a measuring-cup cup (as measured out as 250mL in a glass measuring cup) is the same as one of the actual baking measuring cups that go inside each other like Russian dolls lol

I thought they were different somehow (something something imperial metric yadda yadda yaddda)

Your turn to come clean Lemmings!

  • cheese_greater@lemmy.worldOP
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    9 months ago

    mirror/reflection

    Yep, that’ll do it, altho its weird he didn’t see her. Mirrors reflections are usually bidirectional, no? Like if I see you <-> you see me usually…

    • Laticauda@lemmy.ca
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      9 months ago

      You get used to seeing something your whole life and it becomes background noise, but it wouldn’t have been like that for the mom’s whole life, she’d be more likely to notice that she can see him that way.

    • rdyoung@lemmy.world
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      9 months ago

      It depends on the angle. There are definitely times you can see someone/something but they can’t see you.

        • pandacoder@lemmy.world
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          9 months ago

          The reflection is only bidirectional if you can see the other person’s eyes.

          It’s like if someone is in a bathroom stall. You could see the stall is occupied by seeing their feet stick below the wall of the stall, but they cannot necessarily see any part of you since their eyes are not where their feet are.

          Same principle applies to reflections, where maybe the body part that you can see is just the top of the head, and since the person isn’t tall enough they can’t see that you can see them.

          • rdyoung@lemmy.world
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            9 months ago

            Even when you can see their eyes that isn’t always the case. It depends on how sharp the angle is and where you and they are relatively speaking. You can definitely see their eyes without them seeing you.

              • rdyoung@lemmy.world
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                9 months ago

                Definitely yes. I’m amazed (but not surprised) by the lack of understanding of this concept.

                I suggest that everyone here play around with mirrors and learn something themselves.

                I’ll leave you with this. Why do mirrors work to see around corners when you are trying to not be seen?

                This might help explain things.

                https://www.iflscience.com/how-can-a-mirror-see-an-object-that-is-hidden-by-a-piece-of-paper-68363#:~:text=As long as there is,employ some pretty hardcore science.

                • Björn Tantau@swg-empire.de
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                  9 months ago

                  That link shows that Mario would see your eyes in the mirror. Those light rays work in both directions. If you can see Mario’s eyes, Mario’s eyes can see yours. This is clearly shown in that link.

                  People use mirrors to covertly look around corners because the mirrors they use are smaller than their head. And if the mirror is still spotted getting a bullet in the mirror is much less lethal than getting a bullet in the head. It has nothing to do with the mirror somehow being magically invisible to whoever is around the corner.

                • wolfpack86@lemmy.world
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                  9 months ago

                  You are wildly misunderstanding the effect at play. All this says is peoples brains are inherently misinterpreting the angles

                  • rdyoung@lemmy.world
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                    9 months ago

                    I’m not misunderstanding anything. That was the first article that popped up that I thought might give some of you something to think about.

                    Maybe I did overestimate the mental strength of those here. I shall not make that mistake again.

                    And to repeat. Yes, you can see things in a mirror or other reflective surface without them being able to see you. I’m still amazed at the fact that no one here seems to understand that. Everyone here must have gone to public school in a red state where they make sure you don’t learn how to think for yourself.