Glands connected to the duodenum

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

Lymphatic system

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

Animal and plant cells, cellular organelles

Eukaryotic cells contain a number of organelles.

Chest

The ribcage, the sternum and the spinal column together form the chest, in which the...

Bacteria (spheres, rods, spirals)

Bacteria occur in a wide range of shapes, including spheres, rods and spirals.

Bacteria (advanced)

Bacteria are unicellular organisms that have no nuclei and are a few micrometres in length

Change of seasons (intermediate)

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

Domestic electric light sources

This animation shows the characteristics of domestic light sources, from traditional...

How does it work? - Loudspeaker

In loudspeakers sound waves are generated by electromagnetic induction.

Liuhe Pagoda (Hangzhou, 12th century)

The Buddhist pagoda of the six Harmonies is located in China, by the River Qiantang.

The ventricular system and the main brain regions

This animation demonstrates the internal structure of the brain.

Apollo 15 mission (Lunar Rover)

The animation shows the two-seater Lunar Rover used in the Apollo 15 mission

Namdaemun (Seoul, South Korea, 14th c.)

Designated as the first National Treasure of South Korea, the Namdaemun was one of the...

Syrian water wheels (City of Hama, 13th century)

Medieval Syrian water wheels were used to convey water to distant areas.

Appendicitis

The inflammation of the vermiform appendix, which is connected to the cecum, requires...

Geographic coordinate system

The geographic coordinate system enables every location on the Earth to be exactly specified.

The Solar System; planetary orbits

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

Formula 1 racing car

Formula 1 is the highest class and most popular type of motor racing.

Stonehenge (Great Britain, Bronze Age)

The world famous monument in England still poses mysteries for archaeologist.

Carbon cycle

Carbon is bound in organic substances during photosynthesis, while during breathing, it...

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