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A variety of peripherals can be used with laptop computers.
This animation compares a modern living room and a typical bourgeois salon.
A legendary fighter plane used by the German air force in World War II.
This animation demonstrates the construction of a fire engine.
Rotating a rectangle around its axes of symmetry or around its sides results in solids of revolution.
This animation demonstrates the most important equipment of ambulance cars.
A colourless, odourless gas, an important component of the atmosphere, indispensable to sustain terrestrial life.
The Jumbo Jet is one of the best known airliners.
The efficient reconnaissance aircraft has been used by the CIA since the Cold War.
Amino acids that make up proteins are bound by peptide bonds.
This animation presents animals commonly kept as livestock and the primal cuts of their meat.
The ingenius water pump designed by Al-Jazari is a great example of the creativity of Medieval Arab engineers.
The animation shows the forms of government and official languages of the world´s countries.
The Tower of Hanoi is a mathematical puzzle.
Based on their life cycle, insects can be grouped into three categories: ametabolous, hemimetabolous or holometabolous insects.
The British Royal Fleet led by Admiral Lord Nelson defeated the combined Franco-Spanish fleet in the naval battle during the Napoleonic Wars.
During World War I France was part of the military alliance called 'Triple Entente'.
The small passenger aircraft is designed for speed, convenience and economical operation.
The most popular European-made transport aircraft before World War II.
The Ottoman fleet suffered a catastrophic defeat by the fleet of the Holy League.