One of the most important components of the microwave oven is the magnetron, which produces the microwaves.
The main sources of water pollution are industry, agriculture and urban areas.
A traditional Chinese siheyuan is a building complex that surrounds a rectangular courtyard.
The range of applications of unmanned aerial vehicles ('drones') keeps growing.
By positron emission tomography (PET), we can obtain visual information on our internal organs without making any surgical incisions.
This 3D scene presents the steps of the cement manufacturing process.
This 3D scene presents the flora and fauna of the last period of the Palaeozoic Era.
Frank Lloyd Wright's well-known work is a masterpiece of modern organic architecture.
This scene presents the location, anatomy and functioning of the central organ of the human circulatory system.
This 3D introduces a centipede species widespread in the Mediterranean.
This scene presents the basic components of the human body.
The development of mosses, ferns, gymnosperms and angiosperms is characterised by the alternation of generations.
Some principles of physics can be demonstrated through the functioning of bicycles.
Let's learn about the bear species that became the symbol of species conservation.
This animations demonstrates the exterior and interior construction of cars, as well as their operation.
A type of steam locomotives used by British Railways were manufactured in the 1950s.
Lightning is a sudden electrostatic discharge accompanied by a sound known as thunder.
Neil Armstrong, one of the crew members of Apollo 11 was the first man to set foot on the Moon.
Soviet labour camps (Gulags) were located far from inhabited areas.
A dynamo converts mechanical energy into direct current.