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Vertical forces can break up layers of rock into fault blocks, which then move vertically along the fracture planes.
The invention of the ballpoint pen made writing a lot easier.
The highway code contains rules concerning the safety equipment of bicycles.
The changing bicycle, at first mocked as a toy, is a true mirror of the technical development over the last three centuries.
The concentration camp established on Polish territory was the administrative centre of a huge camp complex.
The first dwellings in human history provide a lot of information about the lifestyle of our ancestors.
Hero of Alexandria is the inventor of the first steam engine, although he regarded it as an entertaining toy.
Submarines had an important role in naval warfare as early as World War I.
The suspension bridge that stretches above the strait between San Francisco Bay and the Pacific Ocean was opened in 1937.
A mobile, nuclear-capable ballistic missile developed at the end of the Cold War.
Large construction sites provide archaeologists searching for artefacts with a great deal of work.
The Apache attack helicopter, named after an American Indian tribe, was developed for the United States Army.
Static warfare was one of the characteristics of WWI.
The German liquid-propellant rocket, developed during WWII, was the first known man-made object to reach space.
The work of smiths – one of the first professions in history – became even more important in the Middle Ages.
A wide variety of torture devices were in use in medieval dungeons.
Typical working-class districts with unhealthy living conditions were built at the time of the Industrial Revolution.
The ´Flying Fortress´ was developed for the United States Army Air Force by Boeing
Spitfire was a legendary British single-seat military aircraft used in World War II.
The device designed to carry out executions more humanely than before was named after a French doctor.
Ancient Roman conquerors had effective siege engines developed for attacking fortifications.
Ancient Egypt was called the ‘gift of the Nile’, since the river played an important role in the rise of Egyptian civilisation.