This animation explains how a plasma display television works.
The legendary M61 class locomotives of the Hungarian State Railways were manufactured by Nohab.
Các nguyên tử kim loại tạo thành một cấu trúc mạng cân đối.
A type of sugar found in mammalian milk.
The medieval bell tower of the Cathedral of Pisa is the most famous leaning tower of the world.
Edison´s invention records and plays sound from a cylinder, while Berliner´s apparatus uses a disc.
Public schools in villages played an important role in education.
The French monarch got his epithet because of his opulent and extravagant lifestyle.
The Ottoman army included janissaries (paid warriors) and sipahis (vassal knights).
The American Civil War was fought between the Confederacy and the Union.
The building complex was one of the most important Benedictine abbeys for centuries.
Cinemas were built in large numbers in big cities of the US in the 1910s.
The masterpieces of ancient Greek potters are important archaeological artefacts.
A long pipe in the centre of the tower penetrates the ocean bed until it reaches the layer that contains oil.
An ancient Greek myth about the tragedy of father and son who wanted to flee the island of Crete.
Several analogous types of eyes have developed independently through convergent evolution.
The warship having several rows of oars was the typical warship of the Hellenistic era.
The dentition of different species of mammals reflect their feeding habits.
A type of prehistoric reptile having bony plates on its back, which aided thermoregulation.
A liquid-crystal display utilises the light modulating properties of liquid crystals.