Phase transitions

A phase transition is the change of a substance from one state of matter to another.

Daguerreotype

The first commercially successful technique of photography was invented by the French Louis Daguerre.

Cloud formation, types of clouds

Evaporating surface water forms clouds of various shapes from which water falls back to the surface as precipitation.

Electron configuration of calcium

This animation shows the electron configuration of the calcium atom.

Machu Picchu (15th century)

The ancient Inca city, located in present-day Peru, is a World Heritage Site.

Watt´s steam engine (18th century)

The steam engine, perfected by the Scottish engineer James Watt, revolutionised technology.

Concorde (1969)

The first supersonic passenger airliner entered service in 1976.

Planets, sizes

The inner planets of the Solar System are terrestrial planets while the outer planets are gas giants.

Synaptic transmission

Neurons transmit electrical signals via chemical and electrical synapses.

Physicists who changed the world

These great scientists had a tremendous impact on the advancement in physics.

Napoleonic Wars

Napoleon I, who crowned himself emperor, was one of the most outstanding military commanders in history.

Vegetative plant organs

These organs are vital for the survival and development of plants.

The anatomy and functions of the liver

The liver is a vital organ that plays an important role in the digestion of fats, detoxification and metabolism.

Code of Hammurabi

The Code of Hammurabi is the emblem of the Mesopotamian civilisation; it contains 282 laws carved into a basalt stele.

Galileo Galilei's workshop

Galileo Galilei's scientific achievements contributed greatly to the advancement of physics and astronomy.

Tower of London (16th century)

The intriguing history of this historic castle spans nearly a thousand years.

Cereals

Cereals are species of grasses cultivated for their edible grains.

Altitudinal zonation

In mountainous areas the climate, soil properties, the flora and fauna change depending on elevation.

3D puzzle

This exciting and colourful game is designed to develop spatial perception. You can check your solutions using isometric views.

Solids of revolution

Rotating a geometric shape around a line within its geometric plane as an axis results in a solid of revolution.

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