This animation demonstrates the relative position of lines and planes.
This animation demonstrates the states and largest cities of the USA.
German sordiers in the First World War were well trained and used modern weapons.
One of the most important parts of a medieval castle was the Knights´ hall.
Medieval knights were vassals of feudal lords and fought on horseback in battles.
One of the main units of Matthias Corvinus´ Black Army was the cavalry.
The protective embankment, or, in case of minor floods, the summer dyke ensures the protection against flood damage.
This animation demonstrates the use of modern technology in agriculture.
Competing with each other in the 19th and 20th centuries, the world´s most powerful nations made great efforts to develop effective firearms.
Find views and nets of three-dimensional shapes.
The animation demonstrates the process of ring closure of open-chain glucose into alpha- and beta-D-glucose.
Television, invented in the early 20th century, became one of the basic forms of entertainment.
Ancient Indian war elephants were used as ´tanks´ in battles.
The Széchényi Chain Bridge, named after István Széchenyi, was the first permanent bridge across the Danube between Pest and Buda.
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).
The California Gold Rush started in 1848, near San Francisco.
This animation demonstrates how microwave ovens work.
The characteristic colours of the common kingfisher aid the bird in catching its prey.
Pollen serves to fertilise the egg of plants. Pollen grains come in a variety of shapes and sizes, characteristic of the species.