Liquid: Did you mean...?

A photograph of liquid gold in a refinery.

A sekomata used to measure standard quantities of liquids. From the agora of Piraeus. (Archaeological Museum, Piraeus)

A documentary on the invention of beer in ancient Egypt.

Greek Fire was an incendiary weapon first used in Byzantine warfare in 678 CE. The napalm of ancient warfare, the highly flammable liquid was made of secret ingredients and used both in catapulted incendiary...

The thermometer was invented in the mid-17th century during the Scientific Revolution when scientists began to search for an accurate instrument to measure a wide range of temperatures using a scale that...

Amber, the fossilised resin of trees, was used throughout the ancient world for jewellery and decorative objects. The main source was the Baltic region where amber, known to mineralogists as succinite, was washed up onto beaches...

There were three principal painting techniques during the Renaissance: fresco, tempera, and oils. In all of these techniques, colour was an important part of the painter's armoury, allowing them to create...

Siege tactics were a crucial part of medieval warfare, especially from the 11th century CE when castles became more widespread in Europe and sieges outnumbered pitched battles. Castles and fortified cities offered...

Already subjected to constant bombardment by artillery, enemy sniper fire, and the awful living conditions, soldiers fighting in the muddy trenches of the First World War did not imagine their situation could get...

The production and trade of fish sauce in the ancient world was a significant and widespread industry, stretching from Britain to the Black Sea. Roman fish sauce, known as garum, was one of the most popular and commonly...