Mysterious Bismuth and Magnesium from Bottom of Wedge Shaped UFO

#mystery #space
The metal is made in layers that alternate from 1 to 4 microns of pure bismuth with a magnesium-zinc alloy that is 100 to 200 microns thick. For comparison, a human hair is about 100 microns wide, so that’s about the size of the magnesium-zinc layers. A red blood cell is about 8 microns in diameter. So the pure bismuth layer is twice the width of a red blood cell.
Source: https://www.earthfiles.com​
Read here: https://helenastales.weebly.com/blogue/mysterious-bismuth-and-magnesium-from-bottom-of-wedge-shaped-ufo7574823

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