yego.me
💡 Stop wasting time. Read Youtube instead of watch. Download Chrome Extension

The Infinite Zoetrope - Smarter Every Day 90


3m read
·Nov 3, 2024

Hey, it's me Destin. Welcome back to Smarter Every Day!

So, I'm in a—not a strange—oh, it's a golden play button that can only mean one thing: somebody famous! Quite famous, doesn't say.

Yeah, so this is Mystery Guitar Man. If you've checked out YouTube for any amount of time, you know who he is. He makes really cool videos, and the reason I like your videos is because I think they're smart.

You think so?

I do think they're smart.

Well, thank you! I've always wanted to see one of your smart videos being made, so that's what you're doing now with this?

Yeah.

Yeah, this is a zoetrope.

A what?

It’s a zoetrope. I can try to take some of these letters, and… ah, there we go! You have this cylinder that has a bunch of like animation frames up top. See, right now it’s really blurry.

Uh-huh.

They have all these frames, which is basically like—you know—like this, with this, like this, like this, right? Like stop-motion, right?

That's stop-motion, basically.

Yeah. When you spin it, the slits act as a shutter so then you get to see little birds flying around.

So, why do you need the slits?

You need these slits because otherwise your brain, your eyes are seeing way too many frames. Like, you can’t make sense.

Okay, so basically we're eliminating all the parts that we don't want to see. So, you're putting the image in one specific spot. So, you're indexing it or something like that. So, what does that have to do with a record?

This isn’t a Neil Diamond record, is it?

No, no! It's a very cheap record. Somebody’s demo tape, they will record. I guess basically I just spin it like this, and the speed that it spins—which is as fast as I made it go like this—I have my camera shooting at 23 frames per second.

Yeah, a very expensive camera, right?

It’s pretty expensive.

Yeah, that's a good investment. Imagine it’s spinning very slowly. Like, this is one frame, and then this is the next frame, and then this is the next.

So, basically it’s like aliasing, only it’s constructive!

Yeah, I like that! Constructive aliasing. I think you just invented a new term!

So, I shot at a really weird frame rate—like twenty-three point two frames per second—and I can mess with the pitch too. So, this specific very cheap USB thing, it’s like if I can slow it down and turn it up, then you can hear the song.

That's pretty awesome!

That's pretty sweet.

Yeah, so that's how it works basically.

So, enough about that. How long does it take to do this?

This—this is what took the longest. I had to cut out, I think, thirteen hundred different frames. It’s basically like, you know, just go up and line it up correctly.

Are you serious?

Yeah!

So, what are these, by the way?

These are little frames that would basically paste like this: go to the next one, they said go to the next one, paste. And basically these are in sequence, all the frames of the video.

While going, turn the camera on for a second, then turn the camera off. Do this; shut all the lights off, take all these frames up, throw them on the floor, and then put the new frames on! Turn it on, turn the camera and lights on.

So, this is exactly why I like his videos, is because they’re awesome but they’re brute force.

Yes!

Yeah, that's pretty awesome. So, if the video was three seconds long, let’s say that the video was just from here to here, then we would need 72 frames because I did one frame every second.

Gotcha.

Which equals to four full zoetropes because it’s 18 times 18 times 18 times, and they would just send me—right?

Gotcha.

So, okay, so when you made the video, you actually made it one second at a time, and then you would reload the entire zoetrope?

Right, exactly.

And not that exactly one second; it's a little less than a second because only 18 of them fit here because this is a smaller zoetrope. So, I would make it 18 twenty-fourths of a second, whatever that—Adam—

Yeah.

So, if you want to see Mystery Guitar Man’s video or subscribe to him, like I’ve been subscribed for a long time, I really like—I really like a guitar!

Impossible!

Oh wow!

Yeah! Long time, like two men.

Excellent!

So, go check out his channel! Can I have a link? Can you give me a link to this video?

Fantastic!

Anyway, go check him out, subscribe!

I am, I’m Destin. Get smarter every day. Have a good one!

More Articles

View All
2d curl example
So let’s compute the two-dimensional curl of a vector field. The one I have in mind will have an x-component of, let’s see, not nine, but y cubed minus nine times y. Then the y-component will be x cubed minus nine times x. You can kind of see I’m just a s…
Solving equations by graphing: word problems | Algebra 2 | Khan Academy
We’re told to study the growth of bacteria. A scientist measures the area in square millimeters occupied by a sample population. The growth of the population can be modeled by ( f(t) = 24 \times e^{0.4t} ) where ( t ) is the number of hours since the expe…
Theories Are Explanations, Not Predictions
There’s another example from science like this. On a heat source, put a beaker of water, then put a thermometer into that water and turn on your heat source. Then record, as the time passes, what the temperature of the water is. You will notice that the t…
2022 Berkshire Hathaway Annual Meeting | 10 Minute Summary
Each year, 40,000 Warren Buffett fans and Berkshire Hathaway shareholders gather in scenic Omaha, Nebraska, to listen to investing legends Warren Buffett and Charlie Munger share their thoughts on everything from the stock market and investing all the way…
Eaten by Jaws and Big Wave Surfing| Edge of the Unknown on Disney+
JUSTINE DUPONT (VOICEOVER): [SPEAKING FRENCH] FRED DAVID: Four years ago, we moved to Nazaré. And we decided to focus on big wave surfing. Every big wave is different. But I think Nazaré is probably the best place to learn how to deal with big waves. MA…
Dividing 2-digit numbers by 2 digit-numbers | Grade 5 (TX TEKS) | Khan Academy
Let’s get a little bit of practice dividing with two-digit numbers. So, let’s start by trying to figure out what 92 divided by 23 is. Pause this video and see if you can figure that out. All right, now let’s work through this together. So, I am going to …