Junk

A sailing vessel with characteristic lugsails used for both military and trade purposes.

Biogas power plant

Biogas can be produced from organic material (manure, plant waste, organic waste) using bacteria. Biogas is a mixture of methane and carbon dioxide; burning...

Monsoon wind system

In summer, monsoon winds bring heavy rainfall from the ocean to the continent.

Oxygen cycle

The oxygen cycle describes the movement of oxygen within its three main reservoirs.

European badger

The European badger is an omnivorous, nocturnal animal. Badger colonies live in large burrow systems, called setts.

Bells

The bell is a percussion instrument and an idiophone. Many types of bells exist.

Transformer

A transformer is a device used for converting the voltage of electric current.

Mongol Khan (13th century)

The ruler of the vast Mongol Empire was the Khan.

Stag beetle

With the example of the stag beetle we demonstrate how insects' muscles function, how insects fly and how they reproduce.

Optical isomerism

Mirror image isomers of asymmetrical shapes and solids are non-superimposable.

Spider silk, spider web

While the density of spider silk is less than that of nylon filaments, its tensile strength is greater than that of steel.

Ancient Egyptian sailing boat

The river and marine sailing boats of ancient Egypt were one-masted, oared boats

Torii (gateway) of the Itsukushima Shrine

The torii is a traditional Japanese gate built at the entrance of shrines.

Stirling engine - hot-air engine

Stirling engines are also known as external combustion engines. Unlike internal combustion engines (e.g. Otto-engine), here combustion takes place outside...

Apoxyomenos

The characteristic ancient Greek statue was found on the bottom of the Adriatic Sea.

Ivan Meštrović: History of the Croats

One of the Croatian sculptor's most famous works depicts a woman wearing a traditional costume.

What is the time?

A game to practise the use of analogue and digital clocks.

3D Tangram

A special, 3D version of the well-known Chinese logical game.

Blood vessels

The three main types of blood vessels in the human body are the arteries, the veins, and the capillaries.

Passive house

In a passive house a comfortable inner temperature can be ensured without the use of traditional heating and cooling systems.

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