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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 colorful and entertaining animation to practice 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.
Tall buildings are mementoes of human history and technological development.
The Soviet-made satellite was the first spacecraft to be launched into outer space (in October 1957).
Typical flats characterise the culture of the decade.
World War I brought major changes in military technology, due to the development of new weapons.
In 1946 a Hungarian scientist was the first person to detect radar echo from the Moon.
A medieval castle in Hungary, built by King Louis I.