Typical Central European flat in the 1950s

Typical Central European flats in the 1950s consisted of a single room, a kitchen and a bathroom.

Leonardo da Vinci’s inventions -– Siege engines

Leonardo was not only a master artist, but also an accomplished military engineer.

Leonardo da Vinci’s inventions – Aerial screw (around 1489)

The polymath thought that if a screw-like structure can rotate fast enough, it will 'drill' into the air and fly.

Molecule exercise VII (Organic nitrogen compounds)

An exercise about the groups and structure of organic nitrogen compounds.

Leonardo da Vinci’s inventions - Mechanical wing (1493–1495)

The mechanical wing is one of the masterpieces among Leonardo's sketches related to aviation.

Isolated settlement (forester´s house)

Foresters adjusted their lifestyle to the forest environment.

Lake steamer (1846)

The first paddle steamer in Hungary entered service in 1846.

Leonardo da Vinci’s inventions - Flying machine (1488–1489)

The aim of this extraordinarily complex study was to mimic the different phases of the flight of birds.

Athletics stadium

Several different sporting events can be held in an athletics stadium.

Designing kitchen furniture - spatial coordinate system

Practising the use of the spatial coordinate system with the help of a computer-designed kitchen model.

Silver nitrate (AgNO₃)

One of the raw materials of traditional photography.

Hydroxide ion (OH⁻)

A compound ion formed when a water molecule releases a proton.

Cellobiose (C₁₂H₂₂O₁₁)

Cellobiose is the basic structural unit of cellulose.

Carbamide (urea) (CO(NH₂)₂)

An organic compound in the urine of mammals, used in the production of fertilisers as a source of nitrogen.

Benzene (C₆H₆)

Benzene is the simplest aromatic hydrocarbon.

Hydronium ion (H₃O⁺)

The presence of hydronium ions relative to hydroxide ions determines a solution´s pH.

Sulphate ion (SO₄²⁻)

A compound ion produced when sulphuric acid releases protons.

Trans-2-butene (C₄H₈)

A colourless, heavier-than-air gas. Its geometric isomer is cis-2-butene.

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