Mercury

Mercury is innermost and smallest planet of the Solar System.

Mars

Possible traces of water and life are sought on Mars.

The reflection and refraction of light

A ray of light is reflected or refracted at the boundary of two mediums with different...

Thermal expansion of bridges

The length of the metal frameworks of bridges change when the temperature changes.

Panthéon (Paris, 18th century)

The most important Neoclassicist building in France, completed in 1791, became the final...

Teatro Olimpico (Vicenza, 16th century)

The first indoor theatre in modern history to be constructed according to the...

Karst region (intermediate)

Karst formations include dolines and dripstones.

Heart attack

The cause of a heart attack is the blockage of a coronary artery. It is one the most...

Gothic cathedral (Clermont-Ferrand, 15th century)

The cathedral named after the Assumption of Mary into Heaven is one of the gems of French...

Swallowsville

An entertaining animation to practise orientation using a map.

Nitrogen cycle

Atmospherical nitrogen is bound by bacteria and used by living organisms in the form of...

Submarine operation

Submarines submerge and surface by changing the average density of the hull.

Long-tailed mayfly

Larvae of this type of mayflies spend the first three years of their lives in water,...

Aerodynamic lift

Due to their asymmetrical profile of the wings, lift is produced while flying at a high...

How do geckos' feet adhere to smooth surfaces?

Geckos can walk on walls or even ceilings. The 3D scene explains this ability.

Ratio of volumes of similar solids

This 3D scene explains the correlation between the ratio of similarity and the ratio of...

Ivan Meštrović: History of the Croats

One of the Croatian sculptor's most famous works depicts a woman wearing a traditional...

Colonisation and decolonisation

The colonising powers´ colours were wiped off the map by the nations fighting to regain...

Fokker Dreidecker I (1917)

The German triplane was perhaps the best known plane in World War I.

Passive house

In a passive house a comfortable inner temperature can be ensured without the use of...

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