Watt´s steam engine (18th century)

The steam engine, perfected by the Scottish engineer James Watt, revolutionised technology.

The electrical conduction system of the heart

The heart generates the electrical impulses necessary for its own operation. The graphic representation of the electrical activity of the heart is the...

The Alhambra in the 16th century (Spain)

The name of this magnificent palace complex originates in Arabic and means 'the red one'.

Milestones of sculpture

The animation shows five outstanding works in the history of sculpture.

Kepler´s laws of planetary motion

The three important laws describing planetary motion were formulated by Johannes Kepler.

Knossos Palace (2nd millenium BC)

The largest bronze-age building complex of ancient Crete was probably the centre of Minoan civilisation.

Meiosis

Our gametes are haploid cells produced from diploid cells by meiosis, a special type of cell division.

Mars Exploration Program

Space probes and Mars rovers examine the structure of Mars and possible traces of life.

Aluminium smelting

Aluminium smelting is the process of extracting aluminium from alumina by electrolysis.

From the Stone Age to the Iron Age

This animation demonstrates the development of the axe throughout archaeological periods.

Lymphatic system

Lymph vessels carry lymph to the blood vessels, while lymph nodes are integral parts of the immune system.

Lightning

Lightning is a sudden electrostatic discharge accompanied by a sound known as thunder.

The Rutherford experiment

The Rutherford Experiment proved the existence of positively charged atomic nuclei. The results led to the elaboration of a new atomic model.

Countries of the World

Learning about the geographic location, capitals and flags of the world´s countries through exercises in three levels of difficulty.

Dynamo (intermediate)

A dynamo converts mechanical energy into direct current.

BR Standard Class 3 2-6-2T steam locomotive

A type of steam locomotives used by British Railways were manufactured in the 1950s.

The science of candles

Candles have been used for lighting since ancient times.

How does it work? - Water tap

This animation demonstrates the functioning of the 3 basic types of water tap.

Human body (female)

This animation introduces the most important systems of the human body.

Common bottlenose dolphin

Bottlenose dolphins are sea mammals which use ultrasound for orientation.

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