Also, the current Apple Studio Display and Apple XDR Pro Display are both 218 ppi.
The Dell 8k has 288 pixels per inch, which is 4x the detail of the original Mac.
Macintosh 128k was released with a 72 ppi display, so every pixel was the size of a "point", a unit used in more traditional, paper-based graphic design.
https://webplatform.github.io/docs/tutorials/understanding-c...
It's as if the Windows spec were retconned into being the historical norm all along, but I need to dig around to find the origin story here... Why 96 dpi?
My simple guess is that 96 is also divisible by 12, and thus easy to split up into 2, 3, 4, 6, 12, 18, 24 parts... you also have eight pieces in 72 for every nine pieces in 96.
72 = 8 x 9 = 2^3 * 3^2
96 = 32 x 3 = 2^5 * 3
In 1996, it was adopted by W3C for Cascading Stylesheets (CSS) where it was later related at a fixed 3:4 ratio to the pixel due to a general (but wrong) assumption of 96 pixel-per-inch screens
I actually never really questioned this.
It looks mighty nice, just 4 ppi short of exactly 2x pixels per linear inch of these new Macs. I have no idea why.