Hagia Sophia (Istanbul)

The church of the 'Holy Wisdom', built in the Byzantine Empire, had been one of the...

Four-stroke Otto engine

This animation demonstrates the type of engine most commonly used in cars.

Colosseum (Rome, 1st century)

The most famous and most magnificent amphitheatre of Rome was built in the 1st century.

Perimeter, area, surface area and volume

This animation presents the formulas to calculate the perimeter and area of shapes as...

Acropolis (Athens, 5th century BC)

The world's most famous citadel, the Acropolis of Athens was built in the 5th century...

Human body (male)

This animation introduces the most important organ systems of the human body.

Tyrannosaurus rex ‘tyrant lizard’

Large carnivores, perhaps the best known of dinosaurs.

Formation of the Earth and Moon

This animation demonstrates how the Earth and the Moon were formed.

The ear and the mechanism of hearing

The ear converts the vibrations of air into electric signals which are then processed...

Seawater desalination

The desalination process produces drinking water from seawater.

Volcanic activity

This animation demonstrates different types of volcanic eruptions

Deep Sea Hydrothermal Vents

A hydrothermal vent is a fissure in the planet's surface from which geothermally...

The Suez Canal

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

The Panama Canal

The Panama Canal is an artificial waterway created to shorten shipping routes between...

Comets

Comets are spectacular celestial bodies orbiting the Sun.

Tornadoes

Short-lived but extremely powerful tornadoes can cause a great deal of damage.

Ancient Egyptian deities

Ancient Egyptians worshipped a large number of gods and goddesses.

Legendary buildings

A selection of legendary buildings from the history of civilisation.

Relief map of China

An introduction to the relief and hydrography of China.

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