Obsidian blade #science #sciencefacts

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Obsidian Blade is the world's sharpest knife that can cut even a single cell into two parts. Its cut might be so precise that if it touches your body, you might not feel a thing. This blade surpasses kitchen knives by over 500 times in sharpness and is made from cooled lava, shaping it into the world's fastest object. The edge of an obsidian blade is three times sharper than any steel surgical scalpel, measuring only three nanometers, making it the fastest blade globally.


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