Combine harvesters are machines that harvest and thresh grain crops.
This animation demonstrates the structure and operation of impulse turbines.
Dogs are the domesticated subspecies of grey wolves.
Market towns became the most common type of towns in the Kingdom of Hungary by the Late Middle Ages.
The iron lattice tower, erected for the 1889 World Fair, became the symbol of the capital city of France.
This animation demonstrates several types of prisms, from general to regular.
The emergency landing of the pilot appears in the frame story of Antoine de Saint-Exupéry´s most famous novel, The Little Prince.
The Gaul city Alesia, which was defended by Vercingetorix, was besieged by the Roman forces of Julius Caesar in 52 BC.
Hovercraft are capable of travelling at high speed above the surface of water.
Medieval kings were typically depicted sitting on their thrones, wearing a crown and the Royal regalia.
The surface of a sphere consists of the set of points which are all at the same distance from a given point in space.
Ancient Greek heavy infantryman.
The Altar of Peace, commissioned during the reign of Augustus, was one of the most important works of ancient Roman art.
Automobiles have evolved a lot since the late 19th century.
Maharajas were Hindu rulers of large regions of India.
The battle, that is considered to be a tactical masterpiece, meant a decisive victory for Alexander the Great against Persia.
African tribes have their own distinct cultures.
Wines of the Tokaj wine-growing region are well known worldwide.
Calculating the volume of a sphere is possible using an appropriate cylinder and cone.
The Arch of Triumph was built at the entrance of the Forum Romanum, to commemorate Emperor Titus’ victory in the Siege of Jerusalem.