* https://en.wikipedia.org/wiki/Graphics_display_resolution#1024_%C3%97_768_(XGA)
  * https://www.dekartonline.com/blog/2018-02-06-tv-size-diagonal-cm
    * best viewing: 2/3 times diagonal distance 
  * https://upload.wikimedia.org/wikipedia/commons/0/0c/Vector_Video_Standards8.svg
  * https://tvsizeguide.com/27-inch-tv-dimensions/

===== RATIO =====

  * 0.5 = 9/18 http://en.wikipedia.org/wiki/Courier_(typeface)
  * 0.75 = 4/3 4*3 8*6 16*12 32*24 320x240 640x480 720*540
  * 0.8 : 1024/1280
  * 1.25 : 1280/1024
  * 1.333 = 4/3 : 8*6 16*12 32*24 720*540 
  * 1.41891891892 = An A4 etc 
  * 1.5 ratio : 3/2 : 6*4 12*8 720*480
  * 1.5 =  3*2 6*4 12*8 720*480
  * 1.58577250834 = 85.60×53.98 http://en.wikipedia.org/wiki/ISO/IEC_7810
  * 1.7_ = 16/9 : 1920x1080, 1360x768, 1280x720, 960x540, 480x270, 240x135,  192x108
    * https://en.wikipedia.org/wiki/16:9_aspect_ratio
  * 1.75 = TODO is it used ?


===== DIMENSIONS =====

  * 15in : LC552 MonitoR
  * 17in : 1280x1024 / 5:4
  * 19in : 1440x900 : FuS MonitoR
  * 21in : SdTv : TV Philips 21PT136B
  * 24in : [[tv]] : changhong-lc24f2
  * 27in : [[lg]] [[FhD]] : 1920×1080
  * 32in : 80cm  SizE : [[LG]] HdTv, CodeC, WXgA
  * 40in : 101 cm : UhD
  * 42in : 106 cm : XgA SXgA
  * 43in : 108 cm : Pinball standard glass is: 109 x 53,5 x 5cm
    * https://www.lcd-compare.com/televiseur-THO43UV6206W-THOMSON-43UV6206W.htm#


@TaG: DisplaY


===== RESOLUTIONS =====

  * 80*60 : 1/4 PaL
  * 160*120 : 1/2 PaL
  * 320*200 : NtsC
  * 320*240 : AmigA : PAL mode: 320 × 256, 640 × 256, 640 × 512 (interlace), 704 × 576 in overscan.
  * 640*480 : VgA 0.3 MP
  * 854×480 : n950 HandSet
  * 570×576 : https://en.wikipedia.org/wiki/LaserDisc
  * 720×576 : https://en.wikipedia.org/wiki/DVD-Video
  * 768*576 : PaL
  * 800*600 : SVgA 0.4 MP
  * 1280x720 : https://en.wikipedia.org/wiki/HD_ready 16/9 : https://en.wikipedia.org/wiki/16:9_aspect_ratio
    * https://en.wikipedia.org/wiki/720p#
  * 1024*768 : XgA = 0.7 MP (1.33 ratio)
  * 1280*1024 :SxgA
  * 1360x768 : 16/9 : [[WXGA]] 
  * 1366x768 : (683:384 RatiO) https://www.howtogeek.com/224657/why-does-the-1366x768-screen-resolution-exist/#  [[LG]]
  * 1440×900
  * 1920x1080i : FhD 16/9 ratio (1.77) https://en.wikipedia.org/wiki/1080i [[lg]]
  * 1920×1080 : https://en.wikipedia.org/wiki/1080p
    * https://en.wikipedia.org/wiki/Blu-ray#
  * 1280*1024 : [[SXGA]] = 1.3 MP
  * 1600x1200 : 4/3
  * 1920x1200 : LcD
  * 2304*1729 : 4 MP 3983616 pixels [[Camera]]
  * 3840×2160 : 4K TV UHd


===== Density =====

  * 2.1MP : 1920 x 1080 FullHd) [[27in]] : [[lg]]

  * A4 paper = 210 x 297 milimeters  (8.27 x 11.69 inches) : 595x842@72dpi, 2480*3508
    * dpi:150 : 1240 x 1754
    * https://www.a4-size.com/a4-size-in-pixels/?size=a4&unit=px&ppi=1200 # 9922 x 14032
  * A3 paper = 297 x 420 milimeters (11.69 x 16.54 inches)
  * A5 paper = 148 x 210
  * Game card = 55.16 x 84.24 mm
  * Credit Card = 53.98 * 85.6 mm 
  * U.S. tabloid size paper, 11" x 17". (=~ A3)
  * U.S. letter size, 8.5" x 11". (=~A4)

  w/h = 4/3
  h = w * 0.75
  w = 0.8 * d # h = d * (3/5)
  S = w * h = w * w * 0.75
  w = sqrt ( S / .75 )

  1 inch = 2.54 cm
  for A0, A1, A2, ...ISO/european paper sizes: W/H=sqrt(2)


==== PICTURE PRINT =====

  * 2x3 : 0.666667 
  * 3x4 : 0.75 ~ 0.746914  
  * 17x13 = 1.307
  * 4x3 = 1.3333 ~ 1.3268  1.32812  1.33884
  * 15x11 = 1.36
  * 18x13 = 1.384...  
  * 21x15 = 1.4
  * 13x9 = 1.44_
  * 19x13 = 1.46..
  * 3x2 = 1.5 = 15/10 20/15
  * 17x11 = 1.5454_
  * 20x11 = 1.8181_

  mkdir ratio
  cd ratio
  mkdir -p 3x2 4x3
  ln -fs  3x2 0.666667  
  ln -fs 3x2 1.5
  mkdir 4x3
  ln -fs 4x3 1.3333
  ln -fs 4x3 1.3268
  ln -fs 4x3  1.32812
  ln -fs 4x3 1.33884 
  ln -fs 4x3 0.746914

  jpeginfo *.jpg | tee jpeginfo.txt
  cat jpeginfo.txt | awk  '{  print "mkdir -p ./ratio/" ($2/$4) "/"; }' | sort | uniq | tee tmp.sh
  cat jpeginfo.txt | awk  '{  print "ln -fs ../../"$1 " ./ratio/" ($2/$4) "/"; }'  | tee -a tmp.sh


==== MISC ====

  # [[RzR]]@sgi330 xdpyinfo
  # dimensions:    1600x1200 pixels (402x302 millimeters)
  # resolution:    101x101 dots per inch


  Section "Monitor"
    # TV fullscreen mode or DVD fullscreen output.
    # 768x576 @ 79 Hz, 50 kHz hsync
    ModeLine "768x576"     50.00  768  832  846 1000   576  590  595  630
    # 768x576 @ 100 Hz, 61.6 kHz hsync
    ModeLine "768x576"     63.07  768  800  960 1024   576  578  590  616
  EndSection


  * http://lists.debian.org/debian-laptop/2003/02/msg00344.html
  * http://lists.debian.org/debian-laptop/2003/02/msg00344.html
  * http://rzr.online.fr/search.htm

Bonnes résolutions cette année : 1152*864 pour 17" 1280*960 pour 19" et 1600*1200 pour 21/22"

{{http://photos8.flickr.com.nyud.com:8090/7564997_104d5f43ad.jpg?nocache}}


@TaG [[XWindow]] [[AmiloA]] [[Desktop]] [[Monitor]]  [[dpi]] [[Display]] [[Size]] XgA