Quote from: Lum Dërmaku on April 01, 2020, 18:10:13
If it's still a 15.6" screen, 16:10 will not make it larger. It's the same size, just horizontally narrower, vertically taller..
Interestingly, that's where math comes in.
At 15.6", a 16:10 display would deliver ~705.6cm^2, compared to 15.6" 16:9 ~670.9cm^2. Sure, 16:10 is ~9mm less wide, but it is also ~15mm taller, too.
Even at 15.4", the common size of 16:10 displays of this class, 16:10 will get ~687.7cm^2 more area than 15.6" 16:9. At this point, it's ~14mm less wide, but still ~13mm taller.
I think you can see why manufacturers moved to 16:9 over 16:10 (16:10 came first). While it's not the only reason why, but it allows them to advertise larger diagonal numbers while actually producing less screen in reality. Even fewer pixels (it's true of most common 16:10 resolutions - they just got snipped at the bottom to make a 16:9 screen).
Who even made 16:9 content when 16:9 was introduced? Cinema is often 2.35:1 or 1.85:1 (or 21.15:9 and 16.65:1, respectively), neither of which is 16:9. So even on common content, there are still black bars at the top and bottom (negating the common "complaint" made up by people about 16:10 and 3:2).
In the end, 16:9 was chosen because it was shorter than 16:10 and less square, both of which contributed to a lower manufacturing cost (marginally). We got stuck with 16:9 so the likes of Samsung, LG, BOE, AUO, etc could save a few pennies per display while advertising larger numbers. Who cares about the ergonomic and workflow analysis that lead IBM to develop 16:10? Who cares about the fact that laptops cannot get less tall (without compromising either the KB or the touchpad), leading to chin bezels all around (or drop-hinges to hide the chin)? At least Apple actually cared, preserving 16:10, even as that aspect ratio all but disappeared.
In the end, 16:9 was marginally cheaper to produce (not that you would ever see those savings) since it produced a smaller display vs the size rating. Consumers were dumb enough to be deluded, hence 16:9.