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Re: [csswg-drafts] [css-values] Ability to address actual physical size

From: Patrick H. Lauke via GitHub <sysbot+gh@w3.org>
Date: Tue, 15 Nov 2016 11:26:55 +0000
To: public-css-archive@w3.org
Message-ID: <issue_comment.created-260617028-1479209214-sysbot+gh@w3.org>
@nicksherman 

> it also seems to put a lot of faith in how closely CSS pixels on 
most devices tend to match the spec’s reverse-justified definition of 
0.0213 degrees. In most cases, devices do not render CSS pixels at the
 spec-accurate size when their displays are viewed from the intended 
viewing distance. 

of course they don't. but they strive to come close. there's no 
guarantee of absolute accuracy, and the spec 
https://drafts.csswg.org/css-values/#absolute-lengths aknowledges that

>  [...] it is recommended that the pixel unit refer to the whole 
number of device pixels that *best approximates the reference pixel*.

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Received on Tuesday, 15 November 2016 11:27:02 UTC

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