The steam engine, perfected by the Scottish engineer James Watt, revolutionised technology.
The heart generates the electrical impulses necessary for its own operation. The graphic representation of the electrical activity of the heart is the...
The name of this magnificent palace complex originates in Arabic and means 'the red one'.
The animation shows five outstanding works in the history of sculpture.
The three important laws describing planetary motion were formulated by Johannes Kepler.
The largest bronze-age building complex of ancient Crete was probably the centre of Minoan civilisation.
Our gametes are haploid cells produced from diploid cells by meiosis, a special type of cell division.
Space probes and Mars rovers examine the structure of Mars and possible traces of life.
Aluminium smelting is the process of extracting aluminium from alumina by electrolysis.
This animation demonstrates the development of the axe throughout archaeological periods.
Lymph vessels carry lymph to the blood vessels, while lymph nodes are integral parts of the immune system.
Lightning is a sudden electrostatic discharge accompanied by a sound known as thunder.
The Rutherford Experiment proved the existence of positively charged atomic nuclei. The results led to the elaboration of a new atomic model.
Learning about the geographic location, capitals and flags of the world´s countries through exercises in three levels of difficulty.
A dynamo converts mechanical energy into direct current.
A type of steam locomotives used by British Railways were manufactured in the 1950s.
Candles have been used for lighting since ancient times.
This animation demonstrates the functioning of the 3 basic types of water tap.
This animation introduces the most important systems of the human body.
Bottlenose dolphins are sea mammals which use ultrasound for orientation.