Planaria gonocephala

One of the most common types of flatworms.

The urinary system

The urinary system serves for the removal of harmful and useless materials from the body.

Haemoglobin

Oxygen carrier protein in our red blood cells.

Neurons, nervous tissue

Neurons are cells specialised for transmitting electric signals.

Measuring time

The first calendars and time-measuring instruments were already used by ancient Eastern civilisations.

De Havilland DH-106 Comet 1 (1949)

The aircraft manufactured by the British de Haviland company was the world's first mass-produced commercial jetliner.

Battle of Marathon (490 BC)

The marathon running event was instituted in commemoration of the run of a Greek soldier after the Battle of Marathon, fought between the Athenian and the...

Tutankhamun’s tomb (14th century BC)

One of the greatest archaeological finds of the 20th century was the tomb of the Egyptian pharaoh.

The history of aviation

The animation offers a summary of the history of aviation from the Middle Ages.

Battle of Salamis (480 BC)

The Greek fleet owed their success to their good tactics and their fast and easily manoeuvrable ships.

Auschwitz-Birkenau concentration camp

More than one million people died in the WWII Nazi death camp located in present-day Poland.

Vision correction

Concave and convex lenses are used for the correction of short-sightedness and far-sightedness.

Medieval keep

Keeps were typical buildings in the Middle Ages, also built independently from castles.

English battleship (18th century)

English sailing ships were among the best ships in the 17th-19th centuries.

Woolly mammoth

Extinct proboscidea closely related to today's elephants, often hunted by prehistoric man.

Seeds and germination

Dicotyledons have two embryonic leaves (cotyledons), while monototyledons have only one.

Electric surface transport

Trolleybuses and trams are environment-friendly means of public transport

Sharks

A group of fish characterised by a cartilaginous skeleton, well-known species include the great white shark and the great hammerhead shark.

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