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The most microscopic card
Engineers of the Institute of Nanotechnology in Glasgow have created the smallest greeting vmire. This postcard they engraved on the glass. It would seem - is nothing unusual. But following the pictures you will see its size compared to the human hair
2 photos via odditycentral
To get ... o_O
Source:
2 photos via odditycentral
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To get ... o_O
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Source: