Images

A replica of the electromagnet invented by the Canadian engineer William Sturgeon (1783-1850). Sturgeon first devised the electromagnet in 1825; this version was invented around 1832. It was used to create a magnetic force that could provide...

A Watt & Boulton steam engine, one of the key innovations of the Industrial Revolution. Dating to 1788, this example is the oldest original rotative steam engine in the world. Designed and built by James Watt (1736-1819) and Matthew Boulton...

Mosaic with a huge portrait head of Oceanus, surrounded by four nereids and three lines of Latin verse. From Ain Temouchent near Sétif, late 4th or early 5th century CE. Musée national des Antiquités, Algiers, Algeria.

Head of Oceanus, detail of a mosaic from Baths of Themetra near Sousse, beginning of the 3rd century CE. Sousse Archaeological Museum, Tunisia.

A map illustrating the patterns and routes of westward exploration and settlement in the United States after the “Louisiana Purchase” from France in 1803. As Napoleonic dreams of a great North American Empire gave way to French hegemonic...

This is an image of the planet Uranus taken by the spacecraft Voyager 2 in 1986. The Voyager project is managed for NASA by the Jet Propulsion Laboratory.

Uranus on the southern frieze of the Gigantomachy. Pergamon Museum, Berlin.

Fish-shaped amulet from the Warka, Iraq, Late Uruk Period, 3300-3000 BCE The British Museum, London.

An illustration of a child pulling a tub of coal from the mine face to the surface. Child labour was common in mines in Britain and not restricted until the 1842 Mines Act.

A Davy lamp, a safety lamp designed by Humphrey Davy (1778-1820) in 1815 for coal miners. The lamp's flame could not escape the mesh and so did not set alight dangerous gases in mine shafts. In addition, a gauge could tell a miner if such...