The origin of these extraordinary but strange artifacts that the human eye can barely see - is still not explained.
|There were many speculations regarding the nanospirals, later dismissed as forgery or a proof of an alien technology brought to earth.|
However, the discovery of these prehistoric artifacts is very interesting, because the sophisticated technology required to make this kind of products - only goes back to the 1970s.
The spirals range between 3 cm and 0.0003 mm in size. Their remarkable regularity in structure and smooth surfaces, perforated in places, are only visible under an electron microscope.
The nanospirals are mainly made of tungsten and their cores are tungsten or molybdenum. Ones discovered at a later date were also made of copper.
Fascinating is the spirals' proportion due to their surprising regularity, which indicates that they could only have been manufactured by mechanical means. So one can say they are rather artificial construction.
Their date of origin is estimated between 300,000 and 100,000 BC.
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