With the control of energy, mankind created the basis for technological and economic developement. Energy exists in different forms and it is indispensable for every day living, food preparation, communication and technology. Energy sources are Earth, Sun and the planetary motion. They are transformed into human usable energy forms like thermal, electrical or chemical energy.
The term „system“ comes from the Greek word “Σýστημα”(systema), meaning “structured entity”. In the field of engineering ‘system‘ is a fundamental term. It describes the combination of multiple interacting components that result in a common function.