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A comment on iPads using iOS 6, high-res displays showing up in Ars server logs. Parent comment

Re:iPads using iOS 6, high-res displays showing up in Ars se... by zokier on Friday March 02, 2012 @01:41PM (#3657745)
Pixel measurements in CSS are not actual physical pixels. I think that's rather silly, but on the other hand what can you except from web tech....
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Re:iPads using iOS 6, high-res displays showing up in Ars se... by TazeTSchnitzel on Friday March 02, 2012 @01:50PM (#3657780)
They are pixels at 100%, but a lot of mobile devices have a default viewport width making this meaningless.
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Re:iPads using iOS 6, high-res displays showing up in Ars se... by zokier on Friday March 02, 2012 @03:35PM (#3658255)
Nope. CSS 2.1 specification says:

* pt: points — the points used by CSS are equal to 1/72nd of 1in.

* px: pixel units — 1px is equal to 0.75pt.

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Re:iPads using iOS 6, high-res displays showing up in Ars se... by raldi on Friday March 02, 2012 @07:33PM (#3658927)
But in practice, doesn't every major non-mobile browser use 1 px = 1 pixel?
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Re:iPads using iOS 6, high-res displays showing up in Ars se... by andybak on Saturday March 03, 2012 @06:00AM (#3659912)
That being the only sane option, I sincerely hope so.

Years of trying to explain to designers from a print background that it's much easier to think in pixels than doing a mental transformation from mm to dpi to screen and now the whole world goes crazy.

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Re:iPads using iOS 6, high-res displays showing up in Ars se... by zokier on Saturday March 03, 2012 @10:14AM (#3660231)
Most desktop browser default to 96 PPI (which is also the default in Windows), which results to 1px being 1 pixel. 0.75 pt/px * 1/72 in/pt * 96 pixels/in = 1 pixel/px.
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