Solar eclipse

When the Sun, Earth, and the Moon are arranged in a straight line, the Moon can partially or completely obscure the Sun.

Viking settlement (10th century)

Typical settlements of the Norsemen were not only established in Scandinavia, they appeared on distant areas as well.

Tenochtitlan (15th century)

The magnificent capital of the Aztec Empire astonished even the Spanish Conquistadors.

Comparison of edible and poisonous mushrooms

Certain mushrooms are poisonous and can be fatal for humans when consumed, while others are edible and used widely in cooking.

Circus Maximus (Rome)

The ancient Roman arena became well-known for the chariot races held here.

Roman soldier (1st century BC)

Mercenaries of the ancient Roman army were well-trained and well equipped with the most up-to-date weapons.

Medieval inhabited bridge (London Bridge, 16th century)

In the Tudor Era around 200 buildings were built on the bridge across the River Thames.

Bastille (Paris, 18th century)

The Parisian prison became legendary after the Revolution of 1789.

Human muscles

Skeletal muscles form the active part of the locomotor system: they move the bones they are attached to.

Wonders of the Ancient World

Today only one of the Wonders of the Ancient World is still intact: the Pyramids of Giza.

Bedouin camp

The seminomadic lifestyle of the Bedouin adapted to the climatic and environmental conditions of the desert.

Ancient Roman aqueduct and road

The excellent road and aqueduct system covering the whole empire reflects well the development of the Roman civilisation.

Great Wall of China

A series of fortifications built to prevent incursions from northern nomadic groups.

Pyramid of Djoser (Saqqara, 27th century BC)

The step pyramid, built in the 27th century BC, was the first pyramid in Egypt.

Anatomy of the large intestine

The large intestine is the last section of our digestive track.

Macedonian siege tower (4th century BC)

The army of Alexander the Great successfully deployed siege towers in its attacks against fortifications.

How does it work? - Electron microscope

This animation demonstrates the structure and operation of electron microscopes.

Watermill

Machines converting the energy of flowing or falling water into useful forms of power were already in use in the Middle Ages.

Fusion reactor

Nuclear fusion will serve as an environmentally friendly and practically unlimited source of energy.

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