Zaur Kalash 47
@zaurcechnay
Today I will tell you about the most dangerous knife in the world. And you will be surprised In the first place is a scalpel for microsurgical operations with a thickness of 250 to 600 angstroms (10,000,000 Å = 1 mm). But no steel tool can be brought to the sharpness of a knife made of natural volcanic glass – obsidian.
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