No Stupid Questions

2325 readers

44 users here now

There is no such thing as a Stupid Question!

Don't be embarrassed of your curiosity; everyone has questions that they may feel uncomfortable asking certain people, so this place gives you a nice area not to be judged about asking it. Everyone here is willing to help.

ex. How do I change oil
ex. How to tie shoes
ex. Can you cry underwater?

Reminder that the rules for lemmy.ca still apply!

Thanks for reading all of this, even if you didn't read all of this, and your eye started somewhere else, have a watermelon slice 🍉.

founded 2 years ago

MODERATORS

[email protected]

How come when you look at the pixels on some tvs they're all split into the same red green blue but then it changes to the actual picture as you back away zooming out, what sorcery is this? (lemmy.world)

submitted 18 hours ago by [email protected] to c/[email protected]

9 comments fedilink hide all child comments

you are viewing a single comment's thread
view the rest of the comments

[–] JackbyDev 2 points 5 hours ago

You have a finite amount of cones in your eye that see colors. When things are far enough away they blend together.

Imagine a chain link fence. If someone is standing against it then you can see them through a bunch of the holes. If they walk further and further away you'll see them through less and less holes and eventually it may look like they're visible through only one.

Now, imagine they're holding a poster board with a red, blue, and green rectangle. When they're against the fence, this is like being close to the TV. Imagine the holes in the fence as come cells in your eye. Each cone in your eye is stimulated by a single sublixel. As it moves back, the cones are stimulated by multiple sublixels. Once it's far enough back so that a cone is stimulated by all three then the illusion is complete.

Now, it could be that this is one of those weird things that happens with how your brain perceives signals from your eyes and the illusion happens even before that, but I can't remember.