Slavic warriors were greatly respected throughout Europe in the Middle Ages.
A compound ion produced from carbonic acid by releasing protons.
A colourless, odourless, non-reactive gas, it constitutes 78.1% of Earth´s atmosphere.
Colourless, odourless, heavier-than-air gas. Necessary for the photosynthesis of plants.
By varying the position of the light source, you can examine the shades projected onto the planes of the coordinate system.
The Tower of Hanoi is a mathematical puzzle.
The Rietveld Schröder House, located in the town of Utrecht in the Netherlands, can be considered a forerunner of modern houses.
The Jumbo Jet is one of the best known airliners.
Dogs are the domesticated subspecies of grey wolves.
World War I brought major changes in military technology, due to the development of new weapons.
This animation demonstrates how electric steam irons work.
This animation presents animals commonly kept as livestock and the primal cuts of their meat.
A force can be measured by measuring the twisting of the torsion wire in a torsion balance.
Simple harmonic motion can be considered to be the one-dimensional projection of uniform circular motion.
The Fighting Falcon is the most successful aircraft in the category of multi-purpose fighters.
The Soviet-made twin-engine interceptor aircraft was first deployed in 1982.
Typical flats characterise the culture of the decade.
The Votive Church of Szeged, located on the Great Plains of Hungary, emerges from the buildings of the city's famous square, while the National Pantheon can...
The efficient reconnaissance aircraft has been used by the CIA since the Cold War.
The battle ended with the victory of William the Conqueror´s Norman army over the English.