Find views and nets of three-dimensional shapes.
Competing with each other in the 19th and 20th centuries, the world´s most powerful nations made great efforts to develop effective firearms.
This animation demonstrates the use of modern technology in agriculture.
The mummified body of a man who probably lived in the Chalcolithic period, was found in one of the glaciers of the Alps.
Every year, Santa Claus brings gifts to nearly 600 million children on Christmas Eve. Let's see what physical facts make his job harder.
The animation demonstrates the process of ring closure of open-chain glucose into alpha- and beta-D-glucose.
This animation demonstrates the relative position of lines and planes.
Large, extinct species of cats named after the shape of their large canine teeth.
This animation demonstrates the angle of inclination of lines and planes in various positions.
This animation demonstrates various types of cones and pyramids.
Colourless, odourless gas, highly toxic to humans and animals in high concentration.
The theorem formulated by Leonhard Euler describes one of the basic properties of convex polyhedra.
The saker falcon is a large bird of prey widespread in Europe and and Asia.
Television, invented in the early 20th century, became one of the basic forms of entertainment.
A type of settlement that has central functions.
Change of light conditions in different seasons. Measuring height using shadows.
Groups of western jackdaws are frequently found in cities. Konrad Lorenz analysed the complex social behaviour of these animals.
In the battle fought at the shores of Hellas, Octavian won a decisive victory over Marcus Antonius.
German sordiers in the First World War were well trained and used modern weapons.
Automobiles have evolved a lot since the late 19th century.