Bromine (Br₂)

One of the halogens, it may cause skin irritation.

Ammonium ion (NH₄⁺)

A compound ion generated when a proton is added to an ammonia molecule.

Imidazole (C₃H₄N₂)

A biologically and practically important organic compound.

Life on the farm (Hungary)

Farming consists of special agricultural activities.

Chloromethane (methyl-chloride) (CH₃Cl)

Chloromethane can be prepared by heating a mixture of methane and chlorine.

Types of farms and villages

The structure and density of farms and villages depend on the geographical features of the region.

Ethyl acetate (C₄H₈O₂)

One of the most important esters, produced by the reaction of ethanol and acetic acid.

Ichthyosaur

Fish-like marine dinosaurs which resembled dolphins; a good example of convergent evolution.

The First Hungarian automobile (1904)

Hungarian engineer János Csonka built his first automobiles for the Hungarian Postal Service.

Leonardo da Vinci’s inventions - Flying machine (1488–1489)

The aim of this extraordinarily complex study was to mimic the different phases of the flight of birds.

Medieval town in Central Europe

Narrow streets and colourful houses gave medieval towns a special atmosphere.

Bus

Buses play an important role in public transport.

Clothing (Hungary, 10th century)

Dresses reflect the lifestyles and culture of the given era and region.

Earth fortification, Hungary

A triangular earth fortification, used by the leader of one of the old Hungarian tribes at the time of the Hungarian conquest.

Ottoman Sultan (16th century)

The leader of the Ottoman Empire was the Sultan, the lord of life and death.

Grouping of cuboids

This animation demonstrates various types of cuboids through everyday objects.

Austrian Habsburg infantryman

The infantry of the Habsburg Empire were deployed in numerous battles.

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