The design for the armoured car features the most important military requirements: reliability, portability and great firepower.
Leonardo based the design of the flapping wing on birds' wings and a faulty hypothesis.
A heterocyclic organic compound.
Leonardo was not only a master artist, but also an accomplished military engineer.
A compound ion formed when a water molecule releases a proton.
The devastating defeat of the Hungarians in the battle against the Mongolians was the result of several bad decisions.
The presence of hydronium ions relative to hydroxide ions determines a solution´s pH.
The second member in the homologous series of straight-chain alkanes.
A colourless, heavier-than-air gas, an intermediate in the production of nitric acid.
A compound ion, the main source of nitrogen for plants.
A colourless, heavier-than-air gas. Its geometric isomer is cis-2-butene.
One of the halogens, it may cause skin irritation.
A compound ion produced when sulphuric acid releases protons.
Benzene is the simplest aromatic hydrocarbon.
The aim of this extraordinarily complex study was to mimic the different phases of the flight of birds.
An organic compound in the urine of mammals, used in the production of fertilisers as a source of nitrogen.
Fish-like marine dinosaurs which resembled dolphins; a good example of convergent evolution.
Typical Central European flats in the 1950s consisted of a single room, a kitchen and a bathroom.
Synthetic rubber is produced by the polymerisation of isoprene.
Colourless, toxic liquid with a sweet odour.