Electric bell

Mechanical bell that functions by means of an electromagnet.

African village (Sudan)

African villages adapt to the natural environment well and reflect of the culture of local tribes.

Yuri Gagarin's journey to outer space (1961)

Yuri Gagarin became the first human in space on 12 April 1961.

The Suez Canal

The Suez Canal is an artificial waterway connecting the Red Sea and the Mediterranean Sea.

Layers of the skin; cutaneous senses

The skin is the soft outer covering of our body, its three layers are the epidermis, the dermis and the hypodermis.

The human brain

The main parts of the human brain are the brain stem, the cerebellum, the diencephalon, and the cerebrum.

Characteristics of sound waves

This animation explains the most important characteristics of waves through sound waves.

Deforestation

Deforestation has a negative impact on the environment.

Connective tissues

Connective tissues include loose and dense connective tissues, adipose tissue, blood, tendon and bone tissue.

Carboniferous flora and fauna

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

DNA

Carrier of genetic information in cells.

Evaporation and boiling

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

Diocletian's Palace (Split, Croatia)

The fortress-like palace was built by Roman Emperor Diocletian on the coast near his home town.

Anatomy of the small intestine

The longest part of the digestive system, where most of the digestion and absorption takes place.

Nervous system

The central nervous system consists of the brain and the spinal cord, the peripheral nervous system consists of nerves and ganglia.

Gravitational waves (LIGO)

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

Oral cavity, pharynx and oesophagus

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

Types of waves

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

Voice production

When producing sound, the vocal cords are vibrated by the air flowing out of the lung.

Navigational instruments of the past

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

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