Pollen

Pollen serves to fertilise the egg of plants. Pollen grains come in a variety of shapes and sizes, characteristic of the species.

Weapons (World War I)

World War I brought major changes in military technology, due to the development of new weapons.

Typical flat in Hungary in the 1980s

Typical flats characterise the culture of the decade.

Tower of Hanoi

The Tower of Hanoi is a mathematical puzzle.

Simple harmonic motion and uniform circular motion

Simple harmonic motion can be considered to be the one-dimensional projection of uniform circular motion.

Torsion balances

A force can be measured by measuring the twisting of the torsion wire in a torsion balance.

Motorcycle

This animation demonstrates the construction of motorcycles.

Carbon monoxide (CO) (intermediate)

Colourless, odourless gas, highly toxic to humans and animals in high concentration.

Mexican redknee tarantula

One of the best known species of spiders, often kept as pets. Its bite is not fatal for humans.

Mongol warrior (13th century)

The dreaded warriors of the Mongol Empire helped to make it one of the largest empires in history.

Fire brigade

This animation demonstrates the construction of a fire engine.

Carbonate ion (CO₃²⁻)

A compound ion produced from carbonic acid by releasing protons.

Ambulance car

This animation demonstrates the most important equipment of ambulance cars.

Satellite navigation, GPS

The Global Positioning System consists of 24 satellites but only 4 have to be visible for positioning.

The battle of Actium (31 BC)

In the battle fought at the shores of Hellas, Octavian won a decisive victory over Marcus Antonius.

Common blackbird

This animation demonstrates birds' bones and eggs through the example of the common blackbird.

Suction pumps and direct action pumps

Direct action pumps and suction pumps are among the simplest water pumps.

Art Nouveau architecture

One of the most beautiful Art Nouveau buildings in Hungary.

Modern office building

Saving energy and protecting the environment are important factors in the design of modern office buildings.

Coenzyme A

An acyl-carrier coenzyme taking part in both anabolic and catabolic processes.

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