Amylose ((C₆H₁₀O₅)n)

A helical molecule consisting of alpha-D-glucose units. It is one of the basic components of starch.

Silver bromide (AgBr)

A white, crystalline compound which breaks down when exposed to light.

Construction of a panel building

Buildings constructed of prefabricated concrete blocks were widespread in the former Socialist countries.

Comparison of hydrogen halides

Atoms within hydrogen halides are bound by covalent bonds, forming polar molecules.

Alanine (C₃H₇NO₂)

A non-polar amino acid. L and D molecules are mirror images of each other.

Folding (intermediate)

Lateral compressive forces cause rocks to form folds. This is how fold mountains are formed.

Political and economic unions

Several political and economic unions have been formed between countries during the past decades.

Comparison of halogens

Halogen elements are a group in the periodic table consisting of five chemically related elements, fluorine, chlorine, bromine, iodine, and astatine.

Labor camp in Hungary (Recsk)

About 1,500 people were taken to the labor camp also known as ‘the Hungarian Gulag’ during the Rákosi era.

Pyrimidine (C₄H₄N₂)

A heterocyclic organic compound, its derivatives are thymine, cytosine and uracil.

Glyceraldehyde (C₃H₆O₃)

The simplest aldose, an optically active compound.

Császár polyhedron

The Császár polyhedron is a nonconvex polyhedron with 14 triangular faces.

Wheel of fire

The defenders of Eger Castle invented a lethal weapon, a water wheel packed with gunpowder and oil, which proved effective against the Ottoman besiegers in...

Recorder

The recorder is a woodwind musical instrument, a type of fipple flute.

Copper sulfate (CuSO₄)

A compound of sulfur often used as a pesticide.

Grouping of solids 3

This animation demonstrates various groups of solids through examples.

Medieval town in Central Europe

Narrow streets and colorful houses gave medieval towns a special atmosphere.

Tryptophan

One of the 20 amino acids that make up proteins. It contains an aromatic ring as part of its side chain.

Isoleucine

One of the 20 amino acids that make up proteins.

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