The skull and the spine

The two main parts of the central nervous system, the brain and the spinal cord are protected by the skull and the spinal column.

Quinquereme (3rd century BC)

The warship having several rows of oars was the typical warship of the Hellenistic era.

Blitzkrieg strategy (1939-1940)

This effective strategy was based on the fast and synchronised attack of different branches of the army.

MÁV M61 diesel engine (1963)

The legendary M61 class locomotives of the Hungarian State Railways were manufactured by Nohab.

How does it work? - Record player

This animation demonstrates the mechanism and operation of record players.

How does it work? - Air conditioner

An air conditioner cools the air inside by drawing heat away and releasing it outside.

USS Ohio (US, 1979)

Nuclear propulsion was first used by the US Navy for powering submarines in the mid-20th century.

The Macedonian Empire

The legendary ruler and military leader, Alexander the Great, established a vast empire.

Muscles of the upper arm

The arms are moved by flexor and extensor muscles.

Bones of the lower limbs

Bones of the lower limbs are connected to the trunk by the pelvis.

Pula Arena (Pula, 1st century)

The Pula Arena, located in present-day Croatia, was one of the largest Roman amphitheatres in the Antiquity.

Surface tension

Surface tension is the property of a liquid that allows it to obtain the smallest surface area possible.

Hussite wagon fort

The Hussites mastered the use of war wagons in the 15th century.

Hunebeds

These special dolmens located in present-day Netherlands were built about 5,000 years ago.

Cellulose (C₆H₁₀O₅)n

The building material of the cell walls and fibres of plants.

Edible nightshades

Many of the most important food crops we consume belong to the family of nightshades.

Topography of the Earth

The animation presents the largest mountains, plains, rivers, lakes and deserts of the Earth.

Apple tree

The apple is one of the most popular fruits around the world.

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