Lightning is a sudden electrostatic discharge accompanied by a sound known as thunder.
The ´Temple of all gods´ was built during the reign of the Roman Emperor Hadrian.
This animation demonstrates the functioning of the 3 basic types of water tap.
Our body´s internal support structure to which skeletal muscles are attached.
Chess games can help to develop logic skills.
We can travel on dual carriageways on the motorway.
The Parisian prison became legendary after the Revolution of 1789.
The name of this magnificent palace complex originates in Arabic and means 'the red one'.
This animation demonstrates the development of the axe throughout archaeological periods.
This animation introduces the most important systems of the human body.
The animation shows five outstanding works in the history of sculpture.
This animation shows the electron configuration of the calcium atom.
A phase transition is the change of a substance from one state of matter to another.
This animation demonstrates the structure of nitrogen molecules, with one sigma and two pi bonds holding the atoms together.
The three important laws describing planetary motion were formulated by Johannes Kepler.
At the end of the 18th century, mining boomed because of the great need for raw materials in the dynamically developing industry.
Legendary geographical discoveries at the beginning of the Modern Age had not only redrawn maps, but also had a truly diverse impact.
Our gametes are haploid cells produced from diploid cells by meiosis, a special type of cell division.
Tsunami waves are very high waves of immense destructive power.
This animation shows the characteristics of domestic light sources, from traditional light bulbs to LED lights.