The dreaded warriors of the Mongol Empire helped to make it one of the largest empires in history.
This animation demonstrates how sonar works.
This animation demonstrates how lifts work.
The Canadian helicopter is one of the most widely used helicopters in the world.
The US Marine Corps is an important branch of the US Armed Forces, with about 200 thousand, specially trained members.
Colouring the vertices, edges and faces of a given cube according to the criteria specified in the exercise.
The geographical distribution of major (world) religions has been influenced by historical events.
Rotating a rectangle around its axes of symmetry or around its sides results in solids of revolution.
The animation demonstrates the process of ring closure of open-chain glucose into alpha- and beta-D-glucose.
A colourless, odourless gas, an important component of the atmosphere, indispensable to sustain terrestrial life.
A compound ion produced from carbonic acid by releasing protons.
Slavic warriors were greatly respected throughout Europe in the Middle Ages.
Scipio’s Roman army defeated Hannibal’s Punic army in the battle fought during the 2nd Punic war in Africa.
Ancient Greeks became the ‘carters of the sea’ thanks to their advanced sailing ships.
The masterpiece of Buddhist architecture is located in India.
Ancient Indians built huge, naturally ventilated storehouses.
By varying the position of the light source, you can examine the shades projected onto the planes of the coordinate system.
Ancient Indian war elephants were used as ´tanks´ in battles.
The Arch of Triumph was built at the entrance of the Forum Romanum, to commemorate Emperor Titus’ victory in the Siege of Jerusalem.
The fortress of Oradea in Transylvania is a good example of medieval fortress architecture.