Unmanned aerial vehicles (UAV)

The range of applications of unmanned aerial vehicles ('drones') keeps growing.

German alphabet game

Practise the German alphabet and form words from the letters.

Carbonic acid (H₂CO₃)

Colourless, odourless liquid produced by dissolving carbon dioxide in water.

How does it work? - PET-CT

By positron emission tomography (PET), we can obtain visual information on our internal organs without making any surgical incisions.

Bone structure

This scene explains the structure and functions of the bones.

The adrenal glands

The adrenal glands are responsible for maintaining homeostasis and producing a rapid response in stressful situations.

The structure of prokaryotic and eukaryotic cells

There are two basic cell types: prokaryotic and eukaryotic cells.

Russian alphabet game

Practise the Russian alphabet, build words from letters.

English alphabet game

Practise the English alphabet, build words from letters.

Megalithic cultures in Europe

Structures consisting of enormous stone blocks, dating back thousands of years, are monuments of megalithic cultures.

Waterfalls

Waterfalls form where a river flows over a steep precipice in its course.

Trilobites

The ancestors of Arachnida and Crustacea belonged to the class Trilobita.

Junction

Entertaining and spectacular animation to practise orientation in space.

Otto Lilienthal’s glider

The German engineer Otto Lilienthal was the first person to make successful flights with a glider designed by himself.

Road transport, articulated lorry

Articulated lorries play an important role in road transport.

Diversity of light-detecting organs

Several analogous types of eyes have developed independently through convergent evolution.

Soldiers of the American Civil War

The American Civil War was fought between the Confederacy and the Union.

Phonograph and gramophone

Edison´s invention records and plays sound from a cylinder, while Berliner´s apparatus uses a disc.

Leaning Tower of Pisa (14th century)

The medieval bell tower of the Cathedral of Pisa is the most famous leaning tower of the world.

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