Stage 1. Apparatus calibration

Check whether the monitor and the video card are properly recognized by the system.
Install the latest drivers. Choose resolution and refresh frequency of the monitor.

The refresh frequency should not be less than 75 Hz, in order to avoid exhausting the eyes.

It would be good if the value of the refresh frequency is between 85 – 120 Hz.  You should not use the option for higher resolution over 1280 х 1024 pixels. Of course 1600 х 1200 resolution will increase your field of vision considerably, but with low refresh frequency (higher resolutions require lower refresh frequency), with eye damaging winking and with difficult reading of the texts, dialogue boxes, etc. (this problem could be solved partially with the scale coefficient of the system fonts in Windows. You will find this function in the dialogue box for monitor features). The real benefit of 1600 х 1200 resolution will be fully displayed on 21-inches monitors with good video card. If your monitor is different then ask yourself if you are ready to pay for the extra size of your screen with sick eyes and headache?

The resolution has no relevance to the vector graphics, but the raster images are very dependable on it – a limited number of pixels must be put on a certain space. Logically the raster files resolution is measured in pixels per inch (ppi). Often the resolution is marked as points (dpi) although the term is not quite accurate. It’s more proper to use it when referring to the resolution of a certain device. In this case the number of points which the device is able to display per inch determines its resolution.

Generally the different colors are generated by the quick change of the color reflections. The best example is the disc of the whipping top – during the quick spinning of the disc the colors mix thanks to the so called phenomenon “persistence of vision”. This phenomenon is the reason to see more colors than there are actually on the disc.

The spatial combination is a variety of the additive method. This method is based on the fact that human eye does not distinguish the small objects, placed very close in front of it. Instead the eye perceives them as one single object. And if these objects have different colors for human eye they have one color, equal to the sum of all the colors of the separate objects. For example when we look at the sand we see one general color.