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Re: Making pt a non-physical unit

From: David Singer <singer@apple.com>
Date: Fri, 15 Jan 2010 10:50:54 -0800
Cc: "Tab Atkins Jr." <jackalmage@gmail.com>, "robert@ocallahan.org" <robert@ocallahan.org>, www-style <www-style@w3.org>
Message-Id: <C9BAB8A4-435A-4213-A0E2-0069281643C2@apple.com>
To: Brad Kemper <brad.kemper@gmail.com>
I have a suspicion that for the most part you guys are in violent agreement.  But one of the following can't always be true:

a) on most screens a CSS pixel and a device pixel normally match
b) on most physical screens, actual lengths and CSS lengths (for example, inch) normally match;  exceptions include at least the case where there is no physical surface at all (projection glasses)
c) there are 96 CSS pixels to the CSS inch.

David Singer
Multimedia and Software Standards, Apple Inc.
Received on Friday, 15 January 2010 18:51:28 UTC

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