This animation demonstrates various groups of solids through examples.
A compound ion produced from carbonic acid by releasing protons.
Threshing machines are used for separating grains from straw.
The emergency landing of the pilot appears in the frame story of Antoine de Saint-Exupéry´s most famous novel, The Little Prince.
A colorless, odorless, non-reactive gas, it constitutes 78.1% of Earth´s atmosphere.
Pharaoh Thutmose III defeated the rebellious coalition of Canaanite vassal states led by the king of Kadesh.
A pilgrimage chapel designed by the French architect Le Corbusier, one of the greatest architects of the 20th century.
Because of the military conflict in Sudan, millions of people had to flee their homes.
A game about sights around the world.
Influenced by Western Europe, the Tsar attempted to modernize the Russian Empire.
Pollen serves to fertilize the egg of plants. Pollen grains come in a variety of shapes and sizes, characteristic of the species.
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 harriers are birds of prey found almost worldwide.
This animation demonstrates how microwave ovens work.
The characteristic colors of the common kingfisher aid the bird in catching its prey.
The phalanx formation was a military formation of the Greek heavy infantry.
Members of the ancient Roman Legions were the masters of military tactics.
Subterranean rodents widespread in Central- and Eastern Europe.
This animation demonstrates the most important equipment of ambulance cars.
An exercise about the volume and surface area of solids generated from a ´base cube´.