lcdsarenotflickerfree.com

This is the start of a series of experiments to examine the limits of representation methods.
I first came across this LCD flicker effect when experimenting with animated GIF backgrounds in HTML on my PowerBook.
Dragging the window around in Mac OS X or Windows XP (which both allows real-time dragging and resizing of windows), or scrolling the static version of the diagonal pattern background on a LCD display will yield the same effect (try it!).

The effect is achieved by animating an array of pixel-wide diagonal lines at a very fast frame rate. But basically it works all the same at whatever rate. The key moment is when a frame moves onto the next one.
Click >here< for a slower version.

Note that the perceptual colour has been deviated as well. On this example, the value for the blue pixels are:

in RGB, R0; G174; B239;
in hex/web colours, #00AEEF

Yet the percepted colour on the flickering screen tends to give an almost pure cyan colour (R0; G0: C255 / #00FFFF).


On the contrary, when I view the page on a CRT display, it displayed what I originally thought I would see — the lines flowing down smoothly towards the lower left corner, without any colour deviation.

 

> get flickering again

 


edmund@lcdsarenotflickerfree.com