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This extends the life of the diamond blade which is used only when its superior performance is critical. [citation needed] Obsidian, a naturally occurring volcanic glass, is used to make extremely sharp surgical scalpels, significantly sharper than is possible with steel. The blades are brittle and very easily broken.
A notable example is obsidian, a volcanic glass that fractures in a way that produces edges sharper than most metals can attain. Ancient civilizations utilized obsidian for crafting blades and tools due to its razor-sharp quality, which can be sharp enough to cut at the cellular level.
Well-crafted obsidian blades, like any glass knife, can have a cutting edge many times sharper than high-quality steel surgical scalpels: the cutting edge of the blade is only about three nanometers thick. [62]
They are more homogeneous than stainless than other high alloy steels, having carbide only in very small inclusions in the iron. The bulk material is a little bit harder than standard stainless steel such as St-304 (high-end alloys excluded), allowing them to hold a sharper and more acute edge without bending over in contact with hard materials.
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“Oh my gosh! He’s the president of the United States! I can’t even keep up with him,” exclaimed Jean-Pierre, one of many times she insisted the president was sharper than ever.
Scalpel blades are usually made of hardened and tempered steel, stainless steel, or high carbon steel; in addition, titanium, ceramic, diamond and even obsidian knives are not uncommon. For example, when performing surgery under MRI guidance, steel blades are unusable (the blades would be drawn to the magnets and would also cause image artifacts ).
5. You are a night owl. You might have heard the early bird catches the worm, but when it comes to showcasing higher intelligence, the night owls might just have the upper hand.