Comment on In CSS, “px” is not an angular measurement and it is not non-linearparentComments−speleding12yThe px would look larger on a screen with the lower dpi−jahewson12yThat's not the case here because we're talking about CSS pixels and not physical pixels. A CSS pixel is 0.75in and an inch on Windows is 96 physical pixels but on Mac OS it is only 72 physical pixels.−speleding12yNo, you said: "If the CSS spec did not dictate the size of a "px" then all web pages on OS X would look 26% smaller than on Windows"My point is that they would look larger on OS X (lower dpi == larger pixels)
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The px would look larger on a screen with the lower dpi
That's not the case here because we're talking about CSS pixels and not physical pixels. A CSS pixel is 0.75in and an inch on Windows is 96 physical pixels but on Mac OS it is only 72 physical pixels.
No, you said: "If the CSS spec did not dictate the size of a "px" then all web pages on OS X would look 26% smaller than on Windows"
My point is that they would look larger on OS X (lower dpi == larger pixels)