Nitrogen (N₂) (basic)

A colorless, odorless, non-reactive gas, it constitutes 78.1% of Earth´s atmosphere.

Carbon monoxide (CO) (beginner)

Colorless, odorless gas, highly toxic to humans and animals in high concentration.

Evaporation and boiling

What happens in a liquid during evaporation and boiling? What does its boiling point...

The Moon

The Moon is the Earth's only natural satellite

Icebergs

Icebergs are blocks of frozen freshwater floating in the sea.

Electric motors

Electric motors are present in many areas of our everyday lives. Let's learn about the...

The Alhambra in the 16th century (Spain)

The name of this magnificent palace complex originates in Arabic and means 'the red one'.

How does it work? - Vacuum cleaner

The vacuum cleaner creates a partial vacuum and sucks up dust with the help of the...

Permian flora and fauna

This 3D scene presents the flora and fauna of the last period of the Palaeozoic Era.

How does it work? - PET-CT

By positron emission tomography (PET), we can obtain visual information on our internal...

Cement production

This 3D scene presents the steps of the cement manufacturing process.

Ictíneo II submarine

The submarine designed by the Spanish inventor Narcís Monturiol was a pioneering work in...

Fallingwater (Mill Run, USA, 1939)

Frank Lloyd Wright's well-known work is a masterpiece of modern organic architecture.

The battle of Megiddo

Pharaoh Thutmose III defeated the rebellious coalition of Canaanite vassal states led by...

The Battle of the Catalaunian Plains (451)

The Roman army, led by Flavius Aetius, stopped the Hun invasion led by king Attila

Tower of Hanoi

The Tower of Hanoi is a mathematical puzzle.

Rietveld Schröder House (Utrecht, 1924)

The Rietveld Schröder House, located in the town of Utrecht in the Netherlands, can be...

The Battle of Gaugamela (331 BC)

The battle, that is considered to be a tactical masterpiece, meant a decisive victory for...

The battle of Actium (31 BC)

In the battle fought at the shores of Hellas, Octavian won a decisive victory over Marcus...

The Cassini-Huygens Mission (1997-2017)

The Cassini spacecraft was exploring Saturn and its moons for nearly 20 years.

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