Grouping of solids

This animation demonstrates various groups of solids through examples.

Carbonate ion (CO₃²⁻)

A compound ion produced from carbonic acid by releasing protons.

Threshing machine (19th century)

Threshing machines are used for separating grains from straw.

Emergency landing in the Sahara (Little Prince)

The emergency landing of the pilot appears in the frame story of Antoine de Saint-Exupéry´s most famous novel, The Little Prince.

Nitrogen (N₂) (intermediate)

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

The battle of Megiddo

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

The chapel of Notre-Dame-du-Haut (1950, Ronchamp, France)

A pilgrimage chapel designed by the French architect Le Corbusier, one of the greatest architects of the 20th century.

Refugee camp in Africa (Darfur)

Because of the military conflict in Sudan, millions of people had to flee their homes.

Russian Tsar Peter I with his wife

Influenced by Western Europe, the Tsar attempted to modernize the Russian Empire.

Pollen

Pollen serves to fertilize the egg of plants. Pollen grains come in a variety of shapes and sizes, characteristic of the species.

Noah’s ark

According to the Bible Noah was ordered by God to build a large vessel to save his family and the animals from the flood

Marsh harrier

Marsh harriers are birds of prey found almost worldwide.

How does it work? - Microwave oven

This animation demonstrates how microwave ovens work.

Common kingfisher

The characteristic colors of the common kingfisher aid the bird in catching its prey.

Greek and Macedonian phalanx formation

The phalanx formation was a military formation of the Greek heavy infantry.

Ancient Roman infantry tactics

Members of the ancient Roman Legions were the masters of military tactics.

European ground squirrel

Subterranean rodents widespread in Central- and Eastern Europe.

Ambulance car

This animation demonstrates the most important equipment of ambulance cars.

Volume and surface area (exercise)

An exercise about the volume and surface area of solids generated from a ´base cube´.

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