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The range of applications of unmanned aerial vehicles ('drones') keeps growing.
Types of bridges include beam-, arch-, suspension-, cantilever and truss bridges.
Christopher Columbus' three-masted carrack, the Santa Maria was the flagship of his...
Lighthouses are used as an aid to navigation in coastal waters.
Trolleybuses and trams are environment-friendly means of public transport
As a milestone in the history of aviation, Oszkár Asboth´s first helicopter made its...
This animation demonstrates the construction of motorcycles.
Oil tankers appeared in the late 19th century; today they are among the largest ships.