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Darwin's legendary voyage

Darwin's legendary voyage aboard HMS Beagle played a crucial role in the development of the Theory of Evolution.

Lesser horseshoe bat

Bats use ultrasound to navigate and hunt for prey.

Diesel engine

The German engineer Rudolf Diesel patented the diesel engine in 1893.

Photosynthesis

Plants are capable of converting inorganic substances (carbon dioxide and water) into organic sugar.

Apollo 15 mission (Lunar Rover)

The animation shows the two-seater Lunar Rover used in the Apollo 15 mission

Layers of forests

The layers of different types of forests may vary.

Geometric transformations – rotation

This animation demonstrates geometric rotation, a type of geometric transformation both in plane and space.

Globe Theatre (London, 17th century)

One of the directors of the circular, open-air Renaissance theater in London was William Shakespeare.

Operation of river locks

River locks make rivers with great level differences safe for boating.

Notable products

A spectacular demonstration of algebraic expressions.

Machu Picchu (15th century)

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

Rivers and landforms

Rivers play an important role in shaping the Earth's surface: they cause erosion as well as carrying and depositing sediment.

The Dawn mission

Studying Ceres and Vesta will help us learn more about the early history of the Solar System and how rocky planets are formed.

Three-dimensional Cartesian coordinate system

3-dimensional Cartesian coordinate system with illustrations and exercises that develop spatial perception.

Human muscles

Skeletal muscles form the active part of the locomotor system: they move the bones they are attached to.

Viking settlement (10th century)

Typical settlements of the Norsemen were not only established in Scandinavia, they appeared on distant areas as well.

Namdaemun (Seoul, South Korea, 14th c.)

Designated as the first National Treasure of South Korea, the Namdaemun was one of the major gateways of Seoul's Medieval city walls.

The science of candles

Candles have been used for lighting since ancient times.

Tenochtitlan (15th century)

The magnificent capital of the Aztec Empire astonished even the Spanish Conquistadors.

The Rutherford experiment

The Rutherford Experiment proved the existence of positively charged atomic nuclei. The results led to the elaboration of a new atomic model.

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