What am I seeing?
July 3, 2014 8:16 AM Subscribe
Holding a mug close to my face, there is an interesting effect. It's not like other things and I can't duplicate it with other objects.
posted by rahnefan to Science & Nature (5 answers total) 1 user marked this as a favorite
While pressing a ceramic coffee mug against my face this morning I noticed something interesting. Hold anything close up to your nose, shift your focus, and you get a neat optical effect, but this is different.
It became obvious after a second that the green "on" light of my speakers is being reflected, but depending on the position of my head, the light changes in interesting ways. Its ranges from a short thin line to a bold dot, but is never solid. I can see something like filaments that are still when I am still but seem to move in parallax as I pan left or right.
It doesn't work with a clear bottle or a flat white one. So far just the mug which is tall but otherwise ordinary.
Is it just a really close look at the surface of the mug? Tiny cracks in the glaze? I am really curious. I checked carefully to make sure no hairs or lashes or brows are getting in the way. My vision is great and I don't do drugs. It's hard to say whether I'm focusing close or far away though. The details depend on the focus though, like with Magic Eye if you remember those.
I'm really curious what this is so if you have insights, thanks in advance.