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What is the time?

A game to practise the use of analogue and digital clocks.

Fjord

A fjord is a long, narrow inlet with steep sides, created in a valley carved by glacial activity.

Blood vessels

The three main types of blood vessels in the human body are the arteries, the veins, and the capillaries.

Homo erectus

The ‘upright man’ used tools and could set fire.

NAD⁺, NADP⁺, NADPH

NAD⁺ is a coenzyme that plays an important role mainly in catabolic processes, while NADP is important in anabolic processes as hydrogen carriers.

Chlorophyll

Chlorophyll is a photosensitive green pigment found in plants; it absorbs light energy, thus plays a vital role in photosynthesis.

Air pollution

This animation demonstrates the main sources of air pollution: agriculture, industry and urban settlements.

Milky Way

The diameter of our galaxy is about 100,000 light years; it contains more than 100 billion stars, one of which is our Sun.

Desktop computer

This animation demonstrates the structure and most important peripherals of desktop computers.

Traditional Eskimo lifestyle

Igloos were the typical dwellings built by Eskimos living in the Arctic zone.

Knee joint

The knee joint is made up by the femur, the tibia and the kneecap.

Water supply system

The water supply system provides clean and safe drinking water for the consumers.

Airport

Airports provide infrastructure and services necessary for aviation.

Byzantine Emperor (6th century)

The Byzantine Emperor was the head of the Byzantine Empire, the direct continuation of the Roman Empire.

Southern wood ant

An ant colony consist of a queen, male ants and workers.

Port

Ports must provide necessary infrastructure and services for industry and marine transport.

Ancient Egyptian sailing boat

The river and marine sailing boats of ancient Egypt were one-masted, oared boats

The history of human migration

The migration of large human populations began in Ancient times.

ADP, ATP

ATP is the main source of energy for cells.

Tooth brushing

Careful tooth brushing is an important part of oral hygiene.

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