One of the main units of Matthias Corvinus´ Black Army was the cavalry.
Medieval knights were vassals of feudal lords and fought on horseback in battles.
Pollen serves to fertilise the egg of plants. Pollen grains come in a variety of shapes and sizes, characteristic of the species.
The dreaded warriors of the Mongol Empire helped to make it one of the largest empires in history.
This animation demonstrates the main sources of air pollution: Agricultural, industrial and urban air pollution.
The California Gold Rush started in 1848, near San Francisco.
This animation demonstrates the most important seas and bays.
A game about sights around the world.
This animation demonstrates birds' bones and eggs through the example of the common blackbird.
An acyl-carrier coenzyme taking part in both anabolic and catabolic processes.
Egyptian Pharaohs were respected as gods, they were lords of life and death.
Remnants of Ottoman architecture in Hungary include the Gazi Kasim Pasha Mosque in Pécs and the Minaret of Eger.
This animation demonstrates how lifts work.
This animation demonstrates how sonar works.
The US Marine Corps is an important branch of the US Armed Forces, with about 200 thousand, specially trained members.
The Canadian helicopter is one of the most widely used helicopters in the world.
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.
The castle of Belgrade (Nándorfehérvár) was one of the most important components in the chain of Hungarian border forts.
Hovercraft are capable of travelling at high speed above the surface of water.