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Colourless, odourless, heavier-than-air gas. Necessary for the photosynthesis of plants.
The castle of Eger got its final shape and became an important component in the new chain of border forts in the 16th century.
Market towns became the most common type of towns in the Kingdom of Hungary by the Late Middle Ages.
Burj Al Arab, the world's only seven-star luxury hotel is located in the United Arab Emirates.
The small passenger aircraft is designed for speed, convenience and economical operation.
Crystalline allotrope of elemental carbon, the hardest known natural substance.
The iron lattice tower, erected for the 1889 World Fair, became the symbol of the capital city of France.
A floatplane (sometimes called hydroplane) is an aircraft capable of taking off not only dry land, but water too.
Rotating a rectangle around its axes of symmetry or around its sides results in solids of revolution.
This animation demonstrates several types of prisms, from general to regular.
A Romanesque style Benedictine church with a special gateway, built in the 13th century in Hungary.
The most popular European-made transport aircraft before World War II.
A Zeppelin is a type of controllable, rigid airship.
An exercise about the volume and surface area of solids generated from a ´base cube´.
Viruses consist of protein and DNA or RNA; they reprogram infected cells to produce more viruses.
This animation demonstrates various groups of solids through examples.
A colourful and entertaining animation to practise orientation in space.
Direct action pumps and suction pumps are among the simplest water pumps.
The Global Positioning System consists of 24 satellites but only 4 have to be visible for positioning.
A brick castle in South-East Hungary; its oldest parts were probably built in the late 14th century.
The best-known piece of the Hungarian Crown Jewels is the Holy Crown.