I’m composing this blog post on a 24 inch LCD Screen that is 1920×1080 pixels. Back in the day this was a pretty “big” monitor and given the limited amount of space on my desktop probably the toward the high end of the largest sized monitor I could comfortably use. But there is a new kind of big monitor coming out, high resolution “retinal” displays are going to change the web. But first a little background on pixel resolution.
The resolution of a monitor is determined by how many pixels per square inch that it can display. This is expressed as PPI (pixels per inch). PPI is also referred to as pixel density.
Up until now the industry standard for web resolution typically ranged between 72-96 ppi.
For comparison Newsprint is comparable to about 180 ppi (although it’s calculated on the basis of dots per in and line screen which is a whole different ball of wax)
And High Quality Print compares to about 240 ppi
Note print still has some advantages in that the medium is static and uses reflected light. It’s low energy too to a degree after you get done cutting down a small deciduous forest to print an ecology text book, you don’t have to charge it’s battery. The images because they are not on a crt or lcd don’t flicker and there is no glare unless you in direct sunlight. E-ink will answer all these weaknesses but we still have a while to go before the technology catches up with LCD based technology. When it does literacy is going boom in our society. Television as a medium itself is a mild hypnotic. Theta waves and television…
Unaided, the typical human eye can generally not differentiate detail beyond 300 PPI.
The new iPad has twice the resolution of the iPad 2, 264 PPI instead of 132, images are much less pixelated and small typefaces are legible. All of this means that eye strain from computer use will be considerably less. (Although users will still have to deal with glare and the effect of image refresh,) will enable computers to display images on par with quality high end print resolution. Currently the web is running
For example, an image resolution of 72 ppi means that there are 72 pixels in a one-inch row and 72 pixels in each one-inch column of an image. Therefore, theoretically there are 5,184 pixels in one square inch (72×72=5,184). The necessary resolution will differ based on the desired output for the image. An image for a Web site can be between 72-96 ppi but the industry standard for the resolution of Web images is 72 ppi.
1. Calculate diagonal resolution in pixels using the Pythagorean theorem:
dp=diagonal resolution
wp=width in pixels
hp= height in pixels
2. Calculate PPI:
PPI= pixels per inch
dp=diagonal resolution
di=diagonal length in inches
dp=sqrt( (1920)2 + (1080)2 )
dp=2202 pixels
di=24 inches
PPI = 91 pixels per inch
Hold off on buying that new high end laptop…
But it’s nothing compared to what is going to coming out in the next two years. It has been observed that the unaided human eye can generally not differentiate detail beyond 300 PP
So what to expect in the near future.. Android Retinal Display Tablets. An Apple MacBook Pro with 2880×1800 resolution.
Designing Websites for Retinal Displays
https://mashable.com/2012/03/19/ipad-retina-display-eye-strain/
Apple To Launch Retina Display MacBook Pro With 2880×1800 Resolution In 2012 [Rumor]
https://www.cloanto.com/users/mcb/19960719lcd.html
References:
https://en.wikipedia.org/wiki/Pixel_density
https://www.lukew.com/ff/entry.asp?1142
https://www.cs.tut.fi/~jkorpela/math/ <<< NO MATH CSS MARKUP WTF!!!