Viking stave church (Borgund, 13th century)

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

Development of the atomic model

Major phases in the history of theories and views about the structure of the atom.

Watt´s steam engine (18th century)

The steam engine, perfected by the Scottish engineer James Watt, revolutionised technology.

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

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

Hot-air balloon (18th century)

The French Montgolfier brothers were the first pioneers of flying.

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.

Countries of the World

Learning about the geographic location, capitals and flags of the world´s countries through exercises in three levels of difficulty.

Appendicitis

The inflammation of the vermiform appendix, which is connected to the cecum, requires immediate surgical intervention. The animation shows the cause and...

Samurai

The primary duty of these Japanese warriors was to serve their feudal lords, even at the cost of their own lives.

Chain reaction

Energy released during nuclear fission can be used for civilian or military purposes.

Covalent bonds in benzene molecules

In benzene there are sigma bonds and delocalised pi bonds between carbon atoms.

Anglerfish

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

Moon landing: 20 July 1969

Neil Armstrong, one of the crew members of Apollo 11 was the first man to set foot on the Moon.

Himeji Castle

Located close to Osaka, the Japanese castle is also called the White Heron because of its white exterior.

Mars Exploration Program

Space probes and Mars rovers examine the structure of Mars and possible traces of life.

Apollo 15 mission (Lunar Rover)

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

The ventricular system and the main brain regions

This animation demonstrates the internal structure of the brain.

Common bottlenose dolphin

Bottlenose dolphins are sea mammals which use ultrasound for orientation.

Liuhe Pagoda (Hangzhou, 12th century)

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

How does it work? - Loudspeaker

In loudspeakers sound waves are generated by electromagnetic induction.

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