Wines of the Tokaj wine-growing region are well known worldwide.
The surface of a sphere consists of the set of points which are all at the same distance from a given point in space.
African tribes have their own distinct cultures.
Maharajas were Hindu rulers of large regions of India.
The small passenger aircraft is designed for speed, convenience and economical operation.
Calculating the volume of a sphere is possible using an appropriate cylinder and cone.
The Jumbo Jet is one of the best known airliners.
Burj Al Arab, the world's only seven-star luxury hotel is located in the United Arab Emirates.
Competing with each other in the 19th and 20th centuries, the world´s most powerful nations made great efforts to develop effective firearms.
American soldiers fought in almost all major theatres of World War II.
This animation demonstrates the use of modern technology in agriculture.
This animation demonstrates the relative position of lines and planes.
This animation demonstrates the angle of inclination of lines and planes in various positions.
This animation demonstrates various types of cones and pyramids.
An exercise about the generation of solids of revolution.
A colourless, odourless gas, an important component of the atmosphere, indispensable to sustain terrestrial life.
Crystalline allotrope of elemental carbon, the hardest known natural substance.
Rotating a rectangle around its axes of symmetry or around its sides results in solids of revolution.
The theorem formulated by Leonhard Euler describes one of the basic properties of convex polyhedra.
The excellent archers were feared members of the Persian army