Ichthyostega

A prehistoric amphibian and an early representative of the Tetrapods, which became extinct 360 million years ago.

The Hungarian army in the 15th century (cavalry)

One of the main units of Matthias Corvinus´ Black Army was the cavalry.

Ottoman architecture in Hungary (17th century)

Remnants of Ottoman architecture in Hungary include the Gazi Kasim Pasha Mosque in Pécs and the Minaret of Eger.

Carbon dioxide (CO₂) (intermediate)

Colourless, odourless, heavier-than-air gas. Necessary for the photosynthesis of plants.

Alkanes

Alkanes are saturated hydrocarbons which can be organised into a homologous series.

How does it work? - Water tower

This animation demonstrates the structure of water towers.

Egyptian Pharaoh and his wife (2nd millennium BC)

Egyptian Pharaohs were respected as gods, they were lords of life and death.

Giant sequoia

Giant sequoias are the world's largest living organisms by mass.

Sabre-toothed cat

Large, extinct species of cats named after the shape of their large canine teeth.

Knights’ hall

One of the most important parts of a medieval castle was the Knights´ hall.

Gold mining (19th century)

The California Gold Rush started in 1848, near San Francisco.

Coenzyme A

An acyl-carrier coenzyme taking part in both anabolic and catabolic processes.

Common blackbird

This animation demonstrates birds' bones and eggs through the example of the common blackbird.

Medieval knight

Medieval knights were vassals of feudal lords and fought on horseback in battles.

Four colour theorem

Colour a map with the fewest number of colours possible, so that no two adjacent regions have the same colour.

Nitrogen (N₂) (intermediate)

A colourless, odourless, non-reactive gas, it constitutes 78.1% of Earth´s atmosphere.

Tiktaalik

A transitional form between fish and tetrapods, or four-limbed vertebrates.

Graphite

One of the crystalline allotropes of elemental carbon.

European colonisation of the Americas (up to 1763)

Several European countries joined the conquest of the New World, making America a colourful continent.

F-16 Fighting Falcon (USA, 1978)

The Fighting Falcon is the most successful aircraft in the category of multi-purpose fighters.

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