Evolution of the bicycle

The changing bicycle, at first mocked as a toy, is a true mirror of the technical development over the last three centuries.

Mars

Possible traces of water and life are sought on Mars.

USS Ohio (US, 1979)

Nuclear propulsion was first used by the US Navy for powering submarines in the mid-20th century.

Trilobites

The ancestors of Arachnida and Crustacea belonged to the class Trilobita.

Constructing shapes (3D)

Building 3D shapes into a given cube mesh with the help of several views.

Aztec warriors (15th century)

The fearsome looking Aztec warriors could not stop the Spanish conquistadors with their primitive weapons.

Phonograph and gramophone

Edison´s invention records and plays sound from a cylinder, while Berliner´s apparatus uses a disc.

Submarine operation

Submarines submerge and surface by changing the average density of the hull.

Battle of Kadesh (1285 BC)

The outcome of one of the greatest battles in the history of the ancient East (fought by the Egyptians and Hittites) was indecisive.

Apatosaurus

Long-necked herbivorous dinosaur with a robust body.

Electric surface transport

Trolleybuses and trams are environment-friendly means of public transport

Sharks

A group of fish characterised by a cartilaginous skeleton, well-known species include the great white shark and the great hammerhead shark.

How does it work? – Escalator

This animation demonstrates how an escalator works.

Aerodynamic lift

Due to their asymmetrical profile of the wings, lift is produced while flying at a high speed.

Mercury

Mercury is innermost and smallest planet of the Solar System.

The Knights Templar (12th-13th century)

One of the most important religious military orders, formed in the era of the Crusades.

MÁV M61 diesel engine (1963)

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

Stearic acid (octadecanoic acid) (C₁₇H₃₅COOH)

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

Jupiter

Jupiter is the largest planet of the Solar System, it has two and a half times the mass of all the other planets combined.

Safety equipment of bicycles

The highway code contains rules concerning the safety equipment of bicycles.

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