Designers solve problems. Ideas and problems change, however, and new techniques and materials are invented, new production methods are developed. Designing is a process of trial and error. During the development process, designers will think up solutions or part solutions for the problems that they have been presented with. They do not know if this solution will work. Therefore, they will try out their solution, for instance using a test model or a scale model: trial. Sometimes, the solution...

The power of a visual image is determined by a complex array of elements. Anyone who creates a page for a magazine, makes a PowerPoint presentation, designs a brochure, prepares a poster or dreams up an idea for an infographic is faced with some important questions:

* Why is it better to put this photo here rather than there?

* What background color should I use for my presentation?

* What do I need to bear in mind when creating an internet page?

* Is it better to use a table, a graph or an i...