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Giant sequoias are the world's largest living organisms by mass.
The animation shows the forms of government and official languages of the world´s countries.
During World War I France was part of the military alliance called 'Triple Entente'.
The British Royal Fleet led by Admiral Lord Nelson defeated the combined Franco-Spanish fleet in the naval battle during the Napoleonic Wars.
The Ottoman fleet suffered a catastrophic defeat by the fleet of the Holy League.
The battle ended with the victory of William the Conqueror´s Norman army over the English.
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 be found under the arcades surrounding the same square.
Simple harmonic motion can be considered to be the one-dimensional projection of uniform circular motion.
A force can be measured by measuring the twisting of the torsion wire in a torsion balance.
This animation presents animals commonly kept as livestock and the primal cuts of their meat.
This animation demonstrates how electric steam irons work.
Competing with each other in the 19th and 20th centuries, the world´s most powerful nations made great efforts to develop effective firearms.
This animation demonstrates the use of modern technology in agriculture.
The most important types of local winds are the sea-land breeze, the mountain-valley breeze as well as the downslope winds.
The wearer of the armour found at the archaeological dig of the Issyk Kurgan in Kazakhstan was named the 'Golden man'.
The tower situated in the capital city of the Kazakh Republic symbolises the tree of life holding a golden egg.
A medieval glider constructed by Abbas Ibn Firnas.
The ingenius water pump designed by Al-Jazari is a great example of the creativity of Medieval Arab engineers.
The medieval Arab inventor, Hassan Al Rammah designed the world's first operating torpedo.
Blood vessels in fishes' gills absorb oxygen and release carbon dioxide.
Alkanes are saturated hydrocarbons which can be organised into a homologous series.
Groups of western jackdaws are frequently found in cities. Konrad Lorenz analysed the complex social behaviour of these animals.
Change of light conditions in different seasons. Calculating height using shadows.