The Pantheon dome. The concrete for the coffered dome was poured in moulds, probably mounted on temporary scaffolding.

From Chrome Plating to Nanotubes: The Modern Chemistry First Used in Ancient Times

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The ancient Babylonians were the first to use sophisticated geometry – a staggering 1,400 years before it was previously thought to have been developed. Sadly, these mathematical innovations were forgotten as the Babylonian civilisation collapsed and were only rediscovered this year as scientists took a close look at ancient clay tablets.

This surprising finding made me wonder about what other scientific methods that we put down to modern minds were actually discovered by ancient civilisations. So I decided to hunt down some of the most advanced uses of chemistry.

Qin Dynasty chrome plating

The mirrored shine of chrome-plated metal is almost a symbol of the modern era. A thin chrome layer coats metals and plastics in kitchens, bathrooms and cars. Credit for chrome-plating technology goes to George Sargent who published a method in 1920 that lead to the commercial plating that dominated the Art Deco period and beyond. In fact, other famous chemists including  Robert Bunsen  dabbled with chrome plating in the mid-19th century. But all of these may have been beaten to the shine by the metallurgists of the Qin dynasty in China some 2,000 years before chrome had even been identified in the West.

Qin dynasty sword on display.

Qin dynasty sword on display. Mark Lorch/Flickr,  CC BY-ND

In the 1970s, razor sharp swords  coated in a thin layer of chromium oxide  were unearthed along with the famous Terracotta army . The Chinese suggest that their 1st dynasty weapon smiths coated officers' weapons to protect them from corrosion. And indeed, two millennia later the blades are untarnished. However, whether this is really the case or in fact the chromium layer slowly formed from a peculiarity of the blade’s composition and the fires that ravaged the buried terracotta army is a matter of debate.

Roman concrete

Concrete is the mainstay of modern buildings, but ancient civilisations also used it to great effect. Concrete is a composite, meaning that it is made from two or more materials; cement is mixed with sand and gravel, which then sets into whatever structure is required. The most famous ancient concrete buildings are probably the Pantheon and Colosseum in Rome. Both are composed of fine volcanic ash mixed with lime (calcium hydroxide).

Colosseum in Rome.

Colosseum in Rome.  Diliff/wikimediaCC BY-SA

Together these make the cement, which sets and binds fist sized pieces of limestone together. This particular recipe produces a network of crystals that resist propagation of cracks, the bane of modern concrete. The result is an incredibly enduring material that is, in many ways, superior to today’s concrete. A testament to this is the majestic roof of the  Pantheon, which, at 43 metres across, is still the world’s largest unreinforced concrete dome.

Damascene nanotubes

Carbon nanotubes are the strongest and stiffest materials known. They consist of cylinders with walls that are just one atom thick. When used within composite materials they can massively enhance the strength of an object resulting in super strong and light components, some of which you can find in wind turbines, sports gear and vehicles.

18th-century Persian-forged Damascus steel sword.

18th-century Persian-forged Damascus steel sword.  Rahil Alipour Ata Abadi/wikimedia

In 2006 researchers discovered that the people of Damascus  were making use of nanotubes  in their steel hundreds of years ago. The result was beautiful blades covered in swirling patterns. And more importantly for the soldiers of the time was the exceptional durability and the razor-sharp edges the steel held. We now know the exact composition of Damascus steel, yet modern metallurgists have failed to reproduce it so far.

Egyptian pigments

William Perkin  is credited with producing the first organic dye (using chemists’ meaning of the word organic – in other words, carbon-containing chemicals) when he accidentally discovered  purple mauveine  while trying to make quinine in 1856.

Pyxis made out of Egyptian blue from 750-700 BC. Shown at Altes Museum in Berlin.

Pyxis made out of Egyptian blue from 750-700 BC. Shown at Altes Museum in Berlin. Bairuilong/wikimediaCC BY-SA

But the first synthetic pigment of any type was probably made by the Egyptians as early as 3000BC. By heating a mixture of sand, ash, calcium carbonate (possibly from shells), and a copper containing ore to temperatures of over 800°C they manufactured blue calcium copper silicate. This could then be used in glazes to produce a stunning range of hues.

Greek atomic theory

The incredible technologies devised by craftsman and artists of ancient civilisations are astounding. Much of it can’t be bettered by modern techniques. But what separates science from skilled craft is an understanding of the underlying mechanisms involved in the making of the material. Underpinning this understanding in modern chemistry is the atomic theory often credited to  John Dalton in the early 19th century. But philosophers of old also had a good crack at thinking about the nature of matter. And in fact  atomism has sprung up multiple times in antiquity . Most notably from the Greek philosophers Democritus and Leucippus who speculated that everything is composed of physical, indivisible and invisible atoms back in the 5th century BC.

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Myths & Legends

A vase-scene from about 410 BC. Nimrod/Herakles, wearing his fearsome lion skin headdress, spins Noah/Nereus around and looks him straight in the eye. Noah gets the message and grimaces, grasping his scepter, a symbol of his rule - soon to be displaced in the post-Flood world by Nimrod/Herakles, whose visage reveals a stern smirk.
The Book of Genesis describes human history. Ancient Greek religious art depicts human history. While their viewpoints are opposite, the recounted events and characters match each other in convincing detail. This brief article focuses on how Greek religious art portrayed Noah, and how it portrayed Nimrod in his successful rebellion against Noah’s authority.

Human Origins

Ancient Technology

The School of Athens
Much of modern science was known in ancient times. Robots and computers were a reality long before the 1940´s. The early Bronze Age inhabitants of the Levant used computers in stone, the Greeks in the 2nd century BC invented an analogue computer known as the Antikythera mechanism. An ancient Hindu book gives detailed instructions for the construction of an aircraft –ages before the Wright brothers. Where did such knowledge come from?

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