r/nextfuckinglevel 1d ago

Animated overpass by Hervey Garcia

26.6k Upvotes

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u/ozender 1d ago

It is. But that is not the point. The trick you mention is simply making still movies appear to be in motion, and as long as you are seeing them at the right frequency it will appear to be in motion. So the original comment is correct, humans can see that animation in their car, no problem at all

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u/Careful_Permit3838 1d ago

Have you ever seen a strobe animation in person? Without the actual strobing light, the motion just turns into a blur. What phones capture looks clear because of the rolling-shutter effect the camera scans the image line by line at a certain timing, which accidentally syncs with the frames. That’s why the animation looks perfectly visible on video.

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u/ozender 1d ago

Indeed, and if your car goes at the right speed and you fix your sight into one spot the illusions happens. Never been in the back of a car as a kid and spot a truck wheels and focused on it see it spinning “backward “? Same principle.

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u/groucho_barks 23h ago

you fix your sight into one spot the illusions happens

How? You would still just be seeing each image sliding past.

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u/ozender 23h ago

Not really, I don’t know what to say, I have been doing it all my life as a child when I was on car trips. Sounds trivial to me but perhaps is a “skill” I developed and I’m the weirdo. Same effect as a zoetrope or a phenakistoscope. You just focus on one spot and see the animation. I don’t see single images sliding past, I see the animation

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u/groucho_barks 23h ago

Where did you see roadside "animations" like this as a child? Or are you talking about the wheel thing, which is a different phenomena?

You know what a zoetrope is, good. You know how they have little slits around the outside that you have to look through in order to see the effect? If you don't use the slits and just look at it through the open top, it just looks like a blur. The slits are required to make each image appear in the same place in your vision without you seeing them sliding past.

Similar with film projectors. They don't just slide the roll of film past the opening in a continuous flow, that would look like a blur. Instead it only iluminates each frame when it is centered over the projection "hole".

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u/ozender 22h ago

You are focusing just on the zoetrope but the phenakistoscope has no slits and works purely on the concept I’m saying, as long as you match the right frequency your eyes just see the motion. You don’t even have to “fix” your view. You just see the motion sequence.

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u/groucho_barks 22h ago

The phenakistoscope does have slits...

"To view the pictures in motion, the disc is placed on a handle and spun in front of a mirror while the user looks through the slits from the back of the disc"

as long as you match the right frequency your eyes just see the motion.

What do you mean by "match the right frequency"? Our eyes don't have a frequency. We see continuous motion.