– cannot be “split” like plutonium, and even if they could the remaining metal atoms surrounding the fissile zone would remain as solid as ever, too stable to sustain a chain reaction. Everyday materials – atoms of iron, calcium, carbon, etc. Shooting high-energy neutrons at big, barely-stable-to-begin-with nuclei to cause them to break into two smaller nuclei, is called “splitting the atom,” a euphemism for inducing exotic materials to do exotic things. Not sure that qualifies as “cutting” in the sense of cleaving apart bulk material along an intended straight line. Ceramics and glasses are notoriously brittle compared to metal, which might or might no be a problem, depending on the specific cutting It’s true that an atomic nucleus splits into two parts during nuclear fission. Sharpest is not necessarily strongest (tensile strength) or toughest (shear strength). I’m pretty sure, though, that stainless steel is still the predominant scalpel blade material used in operating rooms today.
#Cracked obsidian scalpel skin
This agrees with my own personal experience that some of my worst – and most unexpected – skin lacerations have come from sharp edges of glass and ceramic more than sharpened metal. The latest diamond blades are obviously sharper than glass if the 3 nm is correct… Obsidian scalpels do not have FDA approval, and they are fragile (pieces may break off if lateral force is applied), so they. 40 yrs ago there were expensive diamond blades available that lasted well and would cut bone ok, but the glass ones were sharper and would cut the thinnest sections. The healing of an incision made with an obsidian scalpel is believed to be much faster, and with less scarring, but obsidian tends to be used only where the patient might have an allergy to the metallic scalpel material. However the glass blades can cut less than 100 sections before geting blunt even on soft tissue. These would be similar sharpness to the obsidian blades quoted above by Danger.
#Cracked obsidian scalpel cracked
Outside diamond, cracked glass edges have been used for years as ultramicrotome blades for cutting sections as thin as 200angstroms for electronmicroscopy. This is like 30 atoms wide at 1 angstrom per atom. Quoted sharpness is 3 nm and achieved with plasma polishing.
Contrary to what you might think they stay sharp much better than steel and chipping doesnt seem to be a problem. Synthetic diamond scalpel blades are commercially available and well liked by surgeons. Then there’s PhysicsForums: What’s the sharpest knife on earth? where somebody says: One study found that obsidian incisions produced narrower scars, fewer inflammatory cells, and less granulation tissue in a group of rats. Even the sharpest metal knife has a jagged, irregular blade when viewed under a strong enough microscope when examined even under an electron microscope an obsidian blade is still smooth and even. Though not approved by the US Food and Drug Administration (FDA) for use on humans, obsidian is used by some surgeons for scalpel blades, as well-crafted obsidian blades have a cutting edge many times sharper than high-quality steel surgical scalpels, the cutting edge of the blade being only about 3 nanometers thick. Obsidian is said to make a sharper cut, according to Wikipedia: Current use:
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