Types of waves

Waves play an extremely important role in many areas of our lives.

The bones of the thorax

The ribs, the sternum and the spinal column form the skeleton of the chest.

Navigational instruments of the past

Several ingenious instruments have been invented over the centuries to help in navigating the seas.

Oral cavity, pharynx and oesophagus

The first section of the gastrointestinal tract comprises the oral cavity, the pharynx and the oesophagus.

The development of lakes

Standing bodies of water can form in depressions on the surface by both endogenic and exogenic forces, as well as by human activity.

Carboniferous flora and fauna

This animation presents some animals and plants that lived between the Devonian and Permian periods (358-299 million years ago).

Gravitational waves (LIGO)

Massive accelerating or orbiting bodies cause ripples in spacetime. These are called gravitational waves.

Deforestation

Deforestation has a negative impact on the environment.

The first days in school

Learn the concept of colours, numbers, letters and shapes while playing

Pula Arena (Pula, 1st century)

The Pula Arena, located in present-day Croatia, was one of the largest Roman amphitheatres in the Antiquity.

American bison

The American bison is the largest land animal in North America.

Waterfalls

Waterfalls form where a river flows over a steep precipice in its course.

Hunebeds

These special dolmens located in present-day Netherlands were built about 5,000 years ago.

Great Mosque of Djenné (1907)

The mosque, built in a distinctive architectural style, is the largest adobe structure in the world.

Regular square pyramid

A regular square pyramid is a right pyramid with a square base and four triangular faces.

Edible nightshades

Many of the most important food crops we consume belong to the family of nightshades.

The Zuiderzee Works and the Delta Works (Netherlands)

Remarkable civil engineering works to continue the Netherland's centuries-long fight against the sea.

Surface tension

Surface tension is the property of a liquid that allows it to obtain the smallest surface area possible.

Hussite wagon fort

The Hussites mastered the use of war wagons in the 15th century.

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