You have to understand 1:√2. It’s not merely folding in half. The test is the folded half has to be the same ratio as the parent. It’s same ratio all the way down.
You are not answering the parent comment. If the original aspect ratio was a square, making the "full screen" aspect ratio 1:1, then folded out it would have aspect ratio 2:1, fitting two squares side by side.
The sqrt(2) aspect ratio allows a portrait full app to be scaled up to the exactly to the folded out screen. But does anyone want that? You probably want to fit more content on the bigger screen, so some layout necessarily changes.
Both sides have the same aspect ratio as the whole screen.
> this isn't great design, it's tautology. of course the phone open is twice the size of it closed.
Well, it sounds obvious now, but before Archimedes, ancient engineers split their screens 60-40, so the full screen wasn't twice the size of either side.
Yes, I do understand the issue with the aspect ratio, which is indeed good design, but parent comment's example is that "you can run two apps side by side" is the tautology. Well, at least since the invention of double-entry bookkeeping and getting rid of Archimedian phone design.
If the outer screen has dimensions X by Y, then you unfold it to have the inner screen with dimensions 2X by Y, which cleanly permits side by side apps at the original dimensions of X by Y. This is true for any ratio between X and Y.
If the user isn't going to be multitasking, then the app needs to additionally support the widescreen dimensions of 2X by Y, and the portrait orientation of Y by 2X. Both of these are so drastically larger overall that aspect ratio is a barely-relevant part of the UI layout problem, because nobody wants every button and text label to be double the size (which would mostly defeat the benefits of having the larger screen for anything other than multitasking).
The inside screen, when divided in two vertically, along the fold line, is exactly the same dimensions as the outer screen. Pretty much by definition. Any folding phone, of any aspect ratio, can run two apps on the interior display side by side.
The issue of the internal screen being the same aspect ratio as the external when rotated is completely separate.
which they have to be anyway, to support normal iphones and maybe ipads and in many cases a cackle of Android phones too. (but I still think this is brilliant design)
Good list. And if you support both portrait and landscape, you need to support twice that, and you need to be able to switch on the fly.
But for the apps that don't currently support both orientations, it's possible they don't have support for switching aspect ratio on the fly. This design might help with those apps not completely breaking when folding/unfolding.
Yeah to be fair I'm all for the 1/sqrt(2) aspect ratio, I just think it's funny that it's treated as some kind of holy design constraint when they're all over the map on phone sizing :)
And the extra irony is I'm currently shipping an app that doesn't deal well with different size phones (just pads the edges), heh, so do as I say, not as I do.
The missing piece that makes it not a tautology is that two apps side by side have the same aspect ratio as one app full screen (but 90 degrees rotated)
first - it's not hard to make. Outside screen size doesn't have to be half of the open screen.
second - main idea is about proportions, if you want to design apps that seamlessly transfer from one screen to another they have to have the same proportions of the sides. This is not a given and depends on the height and width.
If you take iPhone 18 Pro resolution : 2,622 x 1,206 doubling it would make the screen with 2,622 x 2,412 - almost a square screen.
They chose to have the folded phone to have 1.4:1 aspect ratio which is consistent when folded and when unfolded.
What app is going to design to flow nicely with a iPhone Duo but not a iPhone 18? Unless Apple has a 1.4:1 ratio across their entire product line, app designers have to deal with variation.
Also, when you rotate the device, the ratio changes. This is especially common when unfolding a foldable.
Folded and unfolded will both be designed for 2 aspect ratios. 1 for Portrait and 1 for Landscape. Opening the fold and rotating 90 deg will give you the larger version while keeping the aspect ratio
"larger version while keeping the aspect ratio" is of minimal benefit. You still need to present a different layout, because eg. any toolbar is going to be a different fraction of the available area depending on whether the app is on the small outer screen or the large inner screen in portrait orientation. Nobody wants a naive 2x scaling of the phone app on their iPad.
You don't seem to be engaging with the point, which is that the space available for content after subtracting out the space taken up by other UI elements is not going to have the same aspect ratio folded and unfolded. A real UI doesn't actually get this supposed benefit. Only something like a full screen video player might (depends on what kind of keep-out zone you need for the front camera), and maintaining the same aspect ratio folded vs unfolded for video content isn't particularly helpful when the aspect ratio in question isn't popular so you'll have letterboxing regardless.
People keep saying it’s so an app can resize to the full interior screen but none of the marketing photos actually have this. So its hard to say “what a genius masterstroke by Apple.”
Most have the closed screen plus another view. Or the lock screen which is a full photo open and a small section closed.
Im not saying its not possible but it doesn’t seem like that is their intention.
The difference is that it has the same aspect ratio folded and unfolded. If you look at other folding phones the inside screen is twice the area, but the shape of the phone is different. 1 : sqrt(2) is the only ratio where you can fold one side in half and the ratio stays 1:sqrt(2). Any other ratio of sides and the inside and outside have different ratios. Therefore, things have to move around, or scale.
Yes, but 1:√2 keeps the ratio even when you rotate the screen vertically. A folded 1:1 screen becomes 2:1 when "unfolded" and the area doubles, so you can go from showing one 1:1 window to two 1:1 windows side by side. But when rotated to a vertical orientation, you can't just scale that 1:1 window to double its size. With 1:√2 you can.
Back in the early 2000's, well before most social media sites existed, I had a coworker who shared with me a number of questionable theories, one of which was basically this. He also believed very passionately that plate tectonics was wrong. Unfortunately social media didn't invent brain worms.
I have to admit - Expanding Earth is hard to debunk!
I think because like Flat Earth many of the observations and elements therein are accurate - they just get the overall picture wrong.
Like stealing the ball with 4 sec left running down the court no defense in sight for the winning layup and missing - comically bouncing off the backboard.
Alas, I believe most crackpots mean well, they just aren’t very good at the sport
Many of the more esoteric conspiracy theories are hard to debunk. Lets take the earth if round, prove it. You can bring up many cases, sails disappearing behind the horizon, goemetry, etc. but actually doing these measurements and calculations cold is pretty hard. And whenever you bring up a fact, they will dismiss it out of hand. Tectonic plates, I believe they exist, I have seen the evidence in books. But I doubt I could prove it, I've never really studied geology or anything like that. And if I were to debate someone who believes they weren't real, I would probably lose as they would bring up obscure papers, incidents, etc. which I wouldn't be able to refute well.
You don't particularly need calculations, just have friends around the world or even a couple hundred miles away, get on a video call to prove the world is round. Whatever your pet theory of how the sun moves across the "flat" earth can be contradicted with a couple of facetime calls.
I’ll do you one better, you shouldn’t even spend any time engaging in a debate with people who believe the earth is flat because they don’t want to change their mind.
It doesn’t really matter if the earth is flat or not, for them it’s about being part of a community of people who believe in something that society tells them is wrong. There is no changing minds besides the 1 in a million you hear about and so all the calculations you could do would never work, sadly.
No but its nice to do relevant observations of basic science yourself. Its fun and satisfying.
My daughter did the shadow stick experiment when she was 14 (for GCSE astronomy), we have lived in different countries so have observed the differences in constellations for ourselves, and we speak to people around the world anyway.
If you're so disinterested why are you talking about it now? Better to focus your attention on something you're not going to be so dismissive and negative about unless your hobby is being an asshole.
I was just browsing comments and read yours and thought it prudent for others to realize what they were dealing with when it came to flat earth theorists so that they protect their time. I’ve probably at this point already saved dozens of seconds for someone.
I was recently in Hawaii on Kauai. I wondered if I could see any of the other Hawaiian islands (besides the small local ones). Can you see Oahu from Kauai (70 miles away)? Rarely, and only if you get to a high enough elevation and even then you can only see the highest peaks. On the other hand, Maui is easily visible from Hawaii from sea level. Simple, practice, repeatable.
Likewise, flying in a plane for any distance and seeing the course is identical to if you pulled a string tight against a globe (give or take). I suppose pilots could choose to fly in an arch to keep the secret, but eventually some capitalist has got to spill the beans to cut costs, right?
Modern inertial navigation fiber optic gyroscopes can be used to measure latitude because they can measure the earth's rotation.
The routes planes take make absolutely no sense if the earth was flat. They actually use great circle routes which are the shortest distance on a globe and these routes look curved on a flat projection.
Conspiracy theorists can also be really into their stuff. Someone who believes the moon landings never happened and who is enthusiastic about that can probably recall a huge number of facts, whereas I can't even recall the years the flights happened, or the names of more than two of the astronauts. That stuff is just pretty irrelevant to a random member of the general public.
Social media gave a geographically distributed population of the “quirky” and their natural predators the grifters a chance to mingle on a global scale. It didn’t invent anything, but it’s a vector for the pathogen.
Depending on how much older he was than you at the time, he might genuinely have been taught in high school that this was wrong. Only in the early 1970s did that even start to gain traction. If he was taught by one of the hold-outs that esteemed a pre-tectonics geologist, it'd be pretty natural to think like that I imagine.
oh he understood what plate tectonics was proposing very well, he just completely rejected it in favour of many distributed prehistoric oceans and a lot (a LOT) of erosion. It was weirdly congruent to phantom time theory.
Okay. Look at the moon. Look at every other planet not currently protected by an atmosphere. They all have craters. This fact is ignored by rote Geologists. "All the high and low points on the planet are due to plate tectonics and erosion!"
Canada has always accepted immigrants. Rapidly increasing the number of foreign students to goose the slumping post-secondary education sector did not work out great. Even with the reductions, there are always immigrants coming into Canada.
Both New Zealand and Australia have about 30% of the population born overseas. Immigration does lead to some stresses but it also has bonuses. Immigration seems to clearly help in the short term.
But yes, immigration doesn't solve the demographics issue, because immigrant citizens also get old and expect government support.
Immigrants do often have good sized families so that brings in a fresh generation of New Zealanders. Plenty of my married friends are from mixed cultures.
In some cultures their children give more time to care for their own parents or elderly family. New Zealand born children seem less likely to do so.
The local born often whine because whinging is a significant part of our colonial heritage from England.
The point is Malthus was very popular in his day and his predictions appeared iron clad, just like predictions about population collapse seem to be today. Many countries enacted population control programs due to his influence.
Reality often has a funny way of evading predictions.
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