Cube of cubes

An exercise about the regular hexahedron built from unit cubes to help deepen your...

Robots

An entertaining game about different views of spatial objects.

Cuboid

A cuboid is a polyhedron with six rectangular faces.

Sailing ships

Schooners, first built in the Netherlands in the 17th century, were mainly used as...

Battleship (HMS Dreadnought, 1906)

HMS Dreadnought revolutionised battleship-building in the 20th century.

Conquistador (16th century)

Spanish conquerors owed their success to their armour and firearms.

Battle of Salamis (480 BC)

The Greek fleet owed their success to their good tactics and their fast and easily...

Seeds and germination

Dicotyledons have two embryonic leaves (cotyledons), while monototyledons have only one.

English battleship (18th century)

English sailing ships were among the best ships in the 17th-19th centuries.

Platonic solids

This animation demonstrates the five regular three-dimensional (or Platonic) solids, the...

Stearic acid (octadecanoic acid) (C₁₇H₃₅COOH)

Solid, white substance, a constituent of vegetable oils and animal fats.

Generating alternating current

Electric current can be generated by rotating an armature loop in a magnetic field.

Vision correction

Concave and convex lenses are used for the correction of shortsightedness and farsightedness.

MÁV M61 diesel engine (1963)

The legendary M61 class locomotives of the Hungarian State Railways were manufactured by...

How does it work? - Record player

This animation demonstrates the mechanism and operation of record players.

Shale gas

This animation explains the technology of shale gas extraction.

Battle of Kadesh (1285 BC)

The outcome of one of the greatest battles in the history of the ancient East (fought by...

Lead-acid battery

Electrochemical processes in a lead-acid battery produce electric current.

The first days in school

Learn the concept of colours, numbers, letters and shapes while playing

Planaria gonocephala

One of the most common types of flatworms.

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