Hotspots

Hotspots are areas of the Earth´s crust where magma often rises to the surface and causes...

Bacteria (spheres, rods, spirals)

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

Gutenberg's press (Mainz, 15th century)

Life magazine picked Gutenberg's invention of mechanical movable type printing as the...

Milestones of sculpture

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

Meiosis

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

Viking stave church (Borgund, 13th century)

A wooden church built in the 12th-13th centuries, the best preserved of Norway´s stave...

The Berlin Wall (1961-1989)

A symbol of division and oppression, the Wall tore a city and numerous families apart.

Medieval town

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

Deep Sea Hydrothermal Vents

A hydrothermal vent is a fissure in the planet's surface through which geothermally...

The Sun

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

Chest

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

Geographic coordinate system

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

Atmospheric circulation

The difference between the temperature of the polar and equatorial zones causes...

ISS

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

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.

The Solar System; planetary orbits

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

Change of seasons (intermediate)

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

How does it work? - Loudspeaker

In loudspeakers sound waves are generated by electromagnetic induction.

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