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Cube (exercises)

Edges, diagonals and faces of a cube can be identified by its vertices.

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.

Battleship (HMS Dreadnought, 1906)

HMS Dreadnought revolutionised battleship-building in the 20th century.

Non-orientable surfaces

The Möbius strip and the Klein bottle are special two-dimensional surfaces with only one side.

Conic sections

The conic section is a plane curve that is created when a right circular cone is intersected by a plane.

Road transport, articulated lorry

Articulated lorries play an important role in road transport.

Enzymes

Enzymes are protein molecules catalysing biochemical reactions. Their activity can be regulated.

Safety equipment of bicycles

The highway code contains rules concerning the safety equipment of bicycles.

Archaeological excavation (pit house)

Large construction sites provide archaeologists searching for artefacts with a great deal of work.

Shale gas

This animation explains the technology of shale gas extraction.

Medical conditions of the spine

Scoliosis is a medical condition in which a person's spine has a lateral deviation.

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...

Measuring time

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

Generating alternating current

Electric current can be generated by rotating an armature loop in a magnetic field.

Wind power station

Wind power stations convert the kinetic energy of the wind into electricity.

Sailing ships

Schooners, first built in the Netherlands in the 17th century, were mainly used as merchant ships.

USS Tarawa LHA-1 (1976)

From the 1940s, the increasingly large aircraft carriers became the masters of the oceans.

Auschwitz I Labour camp

The concentration camp established on Polish territory was the administrative centre of a huge camp complex.

Bireme (ancient oared warship)

A bireme is a type of ancient warship, with a characteristic pointed bow and two decks of oars, used by many armies.

Fat-tailed scorpion

The fat-tailed scorpion is one of the world's most dangerous scorpions.

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