this post was submitted on 14 Jul 2025
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Science Memes

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My time has come!

The above stereographic image is for cross-eyed viewing (most stereograms are wall-eyed, so you may need to put your finger in front of your screen until this one comes into focus)

This is an image of Honolulu, Hawaii, published by NASA. Note Diamond Head (the volcanic crater) in the south.

Here are some other stereopairs published by JPL:


Wheeler Ridge, California


Mount Saint Helens


Salt Lake Valley, Utah


Wellington, New Zealand

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[–] wolframhydroxide@sh.itjust.works 31 points 1 day ago* (last edited 1 day ago) (5 children)

Since some people are apparently rather salty about these being cross-eyed, despite the fact that that's just how NASA made them, here, special for y'all, a selection:

[–] AdmiralRob@lemmy.zip 3 points 9 hours ago (1 children)

Thank you so much! This is so much easier for me.

I wasn't going to complain or anything, but this post made me realize that I'm actually incapable of viewing cross-eyed. It actually hurt my eye sockets to try.

I also personally prefer wall-eyed viewing, but these just happened to be cross-eyed originally, so I was surprised by the complaints.

[–] JayDee@lemmy.sdf.org 6 points 1 day ago* (last edited 1 day ago)

These ones are... different. When I use these ones the mountain ridges appear to dip inwards? Away from the screen. This was not the case for the ones in the main post

EDIT: I figured out the reason: i'm still going cross-eyed to view them. In the cross-eyed ones, you are taking the left image in the right eye and the right image in the left eye, but in the wall-eyed one you are supposed to take them in reverse. So if you look at the wall-eyed one cross-eyed, the depths are going to all be reversed for you.

EDIT 2: to get the wall-eyed ones to work correctly, I had get a piece of mail and physically seperate my eyes from one another with it. The sensation of going wall-eyed was exactly the same as crossing my eyes, but the results were now correct.

[–] Persi@lemmy.zip 4 points 1 day ago

Thank you, they look amazing

[–] angrystego@lemmy.world 2 points 1 day ago* (last edited 1 day ago) (1 children)

Thanks. These are cross-eyed, not the originals. The originals viewed with crossed eyes all made holes out of the mountains.

[–] wolframhydroxide@sh.itjust.works 2 points 21 hours ago* (last edited 20 hours ago) (1 children)

Allow me to word it differently: people are salty that the originals posted above are Cross-eyed, so these are wall-eyed (like I said in the image itself.

The images in the top-level comment are distinctly not for cross-eyed viewing, since the originals were cross-eyed.

[–] angrystego@lemmy.world 3 points 18 hours ago (1 children)

When I view the originals cross-eyed, I see all the mountains as holes in the ground. I'm sure that's not the intended effect. Try it!

[–] wolframhydroxide@sh.itjust.works 2 points 18 hours ago (1 children)

Define "Cross-eyed". I get the impression that your definition is not the same as mine. Cross-eyed viewing is specifically shifting your eyes so that they would be focused on an object closer to you than your screen. Wall-eyed viewing is the term used for shifting your eyes so they would be focused on an object behind your screen. The originals above, as the text in the original NASA photos says, require you to cross your eyes. The images I have posted in this top-level comment require you to look through the screen at the wall. I don't know what else to tell you. You're just wrong. I've been doing this for fifteen years. The US Government has been doing it since the second world war. I think that, given that the current administration is made up entirely of cross-eyed imbeciles, we can probably take their word for it that something is cross-eyed?

But, since just telling you to read the things I have already posted didn't work last time, take a look at the difference between the CrossView and Parallel Viewing (wall-eyed) communities here on Lemmy. If you still don't believe me, I cannot help you.

[–] angrystego@lemmy.world 3 points 18 hours ago (1 children)

I know the definitions. The cross-eyed method is way easier for me than the wall-eyed one. It's not that I don't want to believe you, friend. I'm just reporting what I saw. Did you check the picks yourself with both methods? I did.

[–] wolframhydroxide@sh.itjust.works 3 points 17 hours ago (1 children)

Yes, I made the second set. I have been looking at the originals since I found them months ago. Here, let's do a test. jmol generated this image as "cross-eyed". Do you agree?

[–] angrystego@lemmy.world 1 points 17 hours ago (1 children)

This works perfectly for me with the cross-eyed approach, yes.

No disrespect meant when I asked if you tested your pictures. You know, it IS possible to swich the pictutes without testing, so it made sense to ask.

Thanks for being patient and troubleshooting my apparent viewing anomaly.

[–] wolframhydroxide@sh.itjust.works 2 points 17 hours ago

Very strange, because I can move from this image of PCl5 directly to the honolulu image in the OP and it works just fine. Meanwhile, if I move from there to the "are you not entertained" image, it makes the images go into the page, since they're wall-eyed images.

[–] MisterNeon@lemmy.world 5 points 1 day ago

These are rad. Excellent post.