Circulatory system

Systemic circulation carries oxygenated blood from the heart to the body, while pulmonary circulation carries oxygenated blood from the lungs to the heart.

Earthquake

An earthquake is one of the most devastating natural phenomena.

Human teeth

Humans have 4 types of teeth: incisors, canines, premolars and molars.

Veiled chameleon

Chameleons are reptiles with an ability to change their colours.

Chain reaction

Energy released during nuclear fission can be used for civilian or military purposes.

Body parts

This animation introduces body parts on a male anatomical model.

Saint Alexander Nevsky Cathedral (Sofia, 20th century)

Built in Neo-Byzantine style, this Orthodox cathedral is one of the symbols of the Bulgarian capital city.

The flowers of angiosperms

The animation demonstrates the different flower types of angiosperms.

Venus figurines

These Palaeolithic statuettes probably symbolise fertility and prosperity.

Layers of the ocean

Physical properties, as well as the flora and fauna of the ocean change with depth.

Generators and electric motors

While generators convert mechanical energy into electrical energy, electric motors convert electrical energy into mechanical energy.

Layers of forests

The layers of different types of forests may vary.

Traditional Japanese house (Machiya)

The animation shows the traditional Japanese wooden townhouse, the machiya.

Newton’s Laws of Motion

This animation demonstrates Sir Isaac Newton's three laws of motion that laid the foundation for classical mechanics.

Environmentally friendly vehicles

Combining a conventional internal combustion engine propulsion system with an electric propulsion system reduces emission.

Colouring book

This creative animation contains several 3D objects for colouring.

Our astronomical neighbourhood

A demonstration of nearby planets, stars and galaxies.

Melk Abbey (Austria)

The 900 years old Benedictine abbey is situated in Melk, on the right bank of the Danube.

Marie Curie's laboratory

Marie Curie, the only person to win the Nobel Prize in two different sciences, is probably the most famous woman in the history of science.

Chichen Itza (12th century)

The legendary city of the Mayan-Toltec Empire was located on the territory of present-day Mexico.

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