Oktogon, Budapest (Early 20th century)

A landmark crossroads in the Hungarian capital city at the turn of the century.

Cube puzzle

Building cubes shown in several views from the available unit cubes aids spatial vision and other skills.

Medieval Royal Palace (Visegrád, Hungary, 15th century)

The magnificent palace was commissioned by Charles I of Hungary, it got its final shape during the reign of King Matthias Corvinus.

Battle of Varna (1444)

Hungarian King Władysław I died in the lost battle fought against the Ottomans.

Szilassi polyhedron

This special concave polyhedron was named after a Hungarian mathematician.

Hungarian police patrol car

This animation demonstrates the equipment of a police patrol car.

Cube sections (exercise)

Examining solids formed by the intersection of a cube and a plane.

Haiduk (Hungarian soldiers of the 16th century)

István Bocskay created a successful army from former armed cattle herders in the 16th century.

Arginine

One of the twenty protein-building amino acids.

Benedictine abbey (Tihany, Hungary)

The Benedictine abbey was founded by King Andrew I in 1055.

Dynamo (basic)

A dynamo converts mechanical energy into direct current.

The water cycle (basic)

Water on Earth is in a continuous state of change. The water cycle includes processes such as evaporation, precipitation, melting and freezing.

Sulfuric acid (H₂SO₄)

A colorless, viscous liquid, a highly corrosive, strong acid used in several industrial processes.

Permanganate ion (MnO₄⁻)

Potassium permanganate is used as a disinfectant.

Silver iodide (AgI)

A light yellow compound formed in the reaction of silver nitrate and potassium iodide.

Sodium chloride (NaCl)

Common salt (or table salt) is one of the most important sodium compounds, indispensable for living organisms.

Alpha-D-glucose (C₆H₁₂O₆)

Alpha-D-glucose is one of the stereoisomers of glucoses, specifically the D-glucoses.

Fibroin

Fibroin is a fibrillar protein excreted by silkworms.

Silver chloride (AgCl)

A white, crystalline compound that breaks down when affected by light.

Hypochlorite ion (OCl⁻)

Hypochlorite ions are formed when water is disinfected with chlorine.

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