measurement.rst
author Oleksandr Gavenko <gavenkoa@gmail.com>
Mon, 22 Feb 2016 12:46:36 +0200
changeset 1905 fba288d59662
parent 1894 2e3bc2435d68
child 1912 8b81a8f0f692
permissions -rw-r--r--
Include only local subsections into TOC. This prevent duplication of TOC when build single page HTML document. Also this make unnecessary CSS hack to hide document title as top level section.

.. -*- coding: utf-8; -*-
.. include:: HEADER.rst

=============
 Measurement
=============
.. contents::
   :local:

dpi
===

Dots per inch.

  http://en.wikipedia.org/wiki/Dots_per_inch

ppi
===

pixels per inch, pixel density.

====== =========== ===
 Inch  Resolution  ppi
====== =========== ===
  17"   1280x1024   96
  19"   1280x1024   86
  19"   1600x1200  105
  21"   1600x1200   95
   2"    240x320   196
====== =========== ===

  http://en.wikipedia.org/wiki/Pixels_per_inch

lpi
===

lines per inch.

  http://en.wikipedia.org/wiki/Lines_per_inch

bpp
===

bits per pixel, color depth.

 * 1 bpp, 2 colors (monochrome)
 * 2 bpp, 4 colors
 * 3 bpp, 8 colors
 * 8 bpp, 256 colors
 * 16 bpp, 65,536 colors ("Highcolor" )
 * 24 bpp, 16.8 million colors ("Truecolor")

  http://en.wikipedia.org/wiki/Color_depth