The warship having several rows of oars was the typical warship of the Hellenistic era.
Hero of Alexandria is the inventor of the first steam engine, although he regarded it as an entertaining toy.
Otters are semi-aquatic predatory mammals.
This animation demonstrates the construction of a fire engine.
This animation demonstrates several types of prisms, from general to regular.
Pharaoh Thutmose III defeated the rebellious coalition of Canaanite vassal states led by the king of Kadesh.
This animation demonstrates the construction of motorcycles.
This animation demonstrates how microwave ovens work.
A colourful and entertaining animation to practise orientation in space.
A variety of peripherals can be used with laptop computers.
One of the best known species of spiders, often kept as pets. Its bite is not fatal for humans.
Due to its design and location, the Opera House of the Australian city is one of the most extraordinary opera houses in the world.
Because of the military conflict in Sudan, millions of people had to flee their homes.
Direct action pumps and suction pumps are among the simplest water pumps.
Saving energy and protecting the environment are important factors in the design of modern office buildings.
Woodwind instruments differ from brass instruments mainly in their reed.
The Gaul city Alesia, defended by Vercingetorix, was besieged by the Roman forces of Julius Caesar in 52 BC.
A pilgrimage chapel designed by the French architect Le Corbusier, one of the greatest architects of the 20th century.
The emergency landing of the pilot appears in the frame story of Antoine de Saint-Exupéry´s most famous novel, The Little Prince.
A game about the different views of complex objects.