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Scale exercises

An interesting logical exercise: you have many weights that look the same, you have to find the only one that is different.

Ancient Greek house

The average house in Ancient Greece had a rectangular, geometrical floor plan and two storeys.

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

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

Ancient Roman domus

Wealthy citizens in ancient Rome owned large houses with varied layouts of several rooms.

Concorde (1969)

The first supersonic passenger airliner entered service in 1976.

Container ships

Commercial maritime routes of container ships form a global network.

Santa Maria (15th century)

Christopher Columbus' three-masted carrack, the Santa Maria was the flagship of his first, landmark voyage.

The city of Babylon (6th century BC)

The ancient city of Babylon was built on the banks of the Euphrates River in Mesopotamia.

Parts of the human body

This animation demonstrates the parts of the head, the torso and the limbs.

Operation of river locks

River locks make rivers with great level differences safe for boating.

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

Designated as the first National Treasure of South Korea, the Namdaemun was one of the major gateways of Seoul's Medieval city walls.

Respiratory system

The respiratory system is responsible for the intake of oxygen and the release of carbon dioxide.

The ventricular system and the main brain regions

This animation demonstrates the internal structure of the brain.

The Berlin Wall (1961-1989)

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

Atomic bombs (1945)

The atomic bomb is one of the most destructive weapons in human history.

Anglerfish

This bizarre-looking fish uses its bioluminescent lure to catch its prey. The animation explains how it works.

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...

Deep-sea hydrothermal vents

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

Viking stave church (Borgund, 13th century)

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

Meiosis

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

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