Guillotine

The device designed to carry out executions more humanely than before was named after a French doctor.

Jamestown (17th century)

Jamestown, founded in 1607, was the first permanent English settlement on the east coast of North America.

V-2 ballistic missile (1944)

The German liquid-propellant rocket, developed during WWII, was the first known man-made object to reach space.

B-17 Flying Fortress (USA, 1938)

The ´Flying Fortress´ was developed for the United States Army Air Force by Boeing

Working-class district (19th century)

Typical working-class districts with unhealthy living conditions were built at the time of the Industrial Revolution.

Supermarine Spitfire (United Kingdom, 1938)

Spitfire was a legendary British single-seat military aircraft used in World War II.

Cuboid

A cuboid is a polyhedron with six rectangular faces.

Medieval dungeon

A wide variety of torture devices were in use in medieval dungeons.

Ancient Roman military camp

As the Roman Empire expanded, military camps were established on the newly conquered territories.

Woolly mammoth

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

Wind power station

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

The city of Ur (3rd millennium BC)

The ancient city located near the river Euphrates was an important Sumerian centre.

Junction

Entertaining and spectacular animation to practise orientation in space.

Lead-acid battery

Electrochemical processes in a lead-acid battery produce electric current.

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.

Conformations of ethane

The staggered conformation of ethane is more stable than the eclipsed conformation.

Cube (exercises)

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

Muscles of the upper arm

The arms are moved by flexor and extensor muscles.

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.

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