Lymphatic system

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

Glands connected to the duodenum

The pancreas and the liver empty digestive juices into the duodenum.

The human eye

The eye is one of our most important sense organs. When stimulated by light, electric impulses are produced by its receptors.

ISS

The International Space Station is a habitable satellite built with the cooperation of 16 countries.

Offshore natural gas extraction, Norway

The Troll A is an offshore natural gas platform, the largest offshore platform ever built: it rises about 170 metres above water level, weighs 656,000...

Change of seasons (intermediate)

Due to the Earth´s tilted axis, the angle of the Sun's rays at given latitudes continuously changes during the year.

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

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

The Solar System; planetary orbits

The orbits of the 8 planets in our Solar System are elliptical.

Mars Exploration Program

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

The Sun

The diameter of the Sun is about 109 times that of the Earth. Most of its mass consists of hydrogen.

Appendicitis

The inflammation of the vermiform appendix, which is connected to the cecum, requires immediate surgical intervention. The animation shows the cause and...

Gutenberg's press (Mainz, 15th century)

Life magazine picked Gutenberg's invention of mechanical movable type printing as the most important event of the second millennium.

Aluminium smelting

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

Structure of proteins

The structure and arrangement of polypeptide chains affects the spatial structure of proteins.

B-24 Liberator

The B-24 Liberator was an American heavy bomber aircraft, built in large numbers, that was used on every front during World War II.

From the Stone Age to the Iron Age

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

Medieval town

Medieval townhouses were built from stone or brick and were several storeys high.

The White House (Washington, DC, 1800)

One of the best known buildings in the world, this is the residence and office of the President of the United States.

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.

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