Showerthoughts @lemmy.world Slovene @feddit.nl 4w ago

When I wear my glasses I'm not actually looking directly at my surroundings. I'm looking at projections on the two screens in front of my eyes.

30 comments

Lol no. That‘s not how glasses work.
- 'Tis
  
  Wait, what is that painting? I like it and want to know more/the context.
- 'Tis.
It didn't "project", it just bend the light by refraction so it enter your eye in different way, making you see clearer.

Appreciate your thought in the shower though.
- "Projection (physics), the action/process of light, heat, or sound reflecting from a surface to another in a different direction"
  
  Also see my other reply. ... And downvote it. 😀
Since the light actually passes through the glasses and just gets refracted, there's no screen in front of your eyes. It's like looking through water, a window or anything else translucent/transparent.
- I think people might have misunderstood what I meant. I didn't mean there's an actual projector and screens like in a movie theater. Let me elaborate:
  
  Imagine you're standing in a room with a light behind you on a ceiling. You're facing a wall. The light is coming from behind you and bouncing off the wall. What you're seeing is a projection of the wall into your eyes. You wouldn't say that you're looking at the light directly behind you.
  
  Imagine the overhead projector (if you're at least as old as I am). It doesn't have any electronics. It's just a strong light, a lens and a mirror. And it projects the writing on the wall. You're looking at a projection on the wall in the classroom. You wouldn't say you're looking directly at the ink on the transparent piece of plastic used in those projectors.
  
  What if the window you're looking through was actually a prism that refracts light at a right angle and you'd be seeing stuff that's actually on the far left side of the house? Would you say you're looking directly through the window like you would if it was an ordinary window?
  
  You can see this effect on the glasses if you place them on the table and look at them. You won't see the table cloth underneath the lenses straight through them. They refract the light and you will see an image on them of whataver object they're pointed at.
  
  That's what I meant by projection.
  
  Also, in the right conditions you can see through water and a reflection of something on it's surface at the same time.
  
  In that case, you'd never see anything through anything but a "screen" because of the lens in your eye. (Using the definition of "screen" to be a "barrier", which in this case provokes a transformation, or projection, of light.)
No, you aren’t.
- Prove it!
  
  I like your style, Socrates
  
  Either look up how lenses work or go back to your Play-Doh’s cave.
as someone who needs coke bottles to see properly, i understand how you feel

i would also love to smoke some of the weed you had before posting this
- Don't mix coke and weed.
- No, it's "high, how are you?"
  
  My dad calls them ashtrays.
You're never looking directly at anything. All you see are images reconstructed by your brain from the input of the two very shitty cameras you have in your head.
No, a lens and a screen are optically quite different.
- "screen door slams, Mary 's dress sways."
All the snarky well-actuallys on an unserious community really make me want to browse Lemmy more
- I know, they're great, aren't they? 😛 Sorry if I came off snarky.
  
  For the record you weren't the one I was criticizing

30 comments