1,600-Year-Old Goblet Shows that the Romans Used Nanotechnology
By April Holloway
Ancient Origins
The Lycurgus Cup, as it is known due to its depiction of a scene involving King Lycurgus of Thrace, is a 1,600-year-old jade green Roman chalice that changes colour depending on the direction of the light upon it. It baffled scientists ever since the glass chalice was acquired by the British Museum in the 1950s. They could not work out why the cup appeared jade green when lit from the front but blood red when lit from behind.
The mystery was solved in 1990, when researchers in England scrutinized broken fragments under a microscope and discovered that the Roman artisans were nanotechnology pioneers: They had impregnated the glass with particles of silver and gold, ground down until they were as small as 50 nanometres in diameter, less than one-thousandth the size of a grain of table salt.
The work was so precise that there is no way that the resulting effect was an accident. In fact, the exact mixture of the previous metals suggests that the Romans had perfected the use of nanoparticles – “an amazing feat,” according to archaeologist Ian Freestone of University College London. When hit with light, electrons belonging to the metal flecks vibrate in ways that alter the colour depending on the observer’s position.
Now it seems that this technology, once used by the Romans to produce beautiful art, may have many more applications – the super-sensitive technology used by the Romans might help diagnose human disease or pinpoint biohazards at security checkpoints. Gang Logan Liu, an engineer at the University of Illinois at Urbana-Champaign, who has long focused on using nanotechnology to diagnose disease, and his colleagues, realized that this effect offered untapped potential.
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Source: http://www.riseearth.com/2014/06/1600-year-old-goblet-shows-that-romans.html
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Whistler Blowers, Insiders
I guess when these ancient civilizations fell their technology fell with them, but “history” is none the wiser.