We literally use freshly broken glass blades, essentially obsidian, to make micron thick sections of sample materials, for imaging in Transmission electron microscopy.
Accidentally cut the bottom of my foot with flecks of obsidian. Good, it didn't really hurt. Bad, those little cuts wouldn't stop bleeding for the longest time, and I hadn't noticed at first so I got blood everywhere
If I remember correctly, obsidian surgical scalpels are approved for limited use in some countries. Apparently, they leave far less scarring, though care must be taken due to their brittleness.
Pretty sure that's not how that works. Think it's because very sharp things make clean cuts and ragged edges are easier to knit together because there's a larger surface area and more directions to resist any pulling apart of the wound.
Tbf having micro rocks in us is pretty normal and not necessarily bad for health. If you mash up an iron-fortified cereal in warm water and stir it with a strong magnet, you can see the magnetic micro rocks! Also most shimmery cosmetics that are safe for putting on your eyes and lips (any lip product must be safe to eat) have something like mica in them, which also would qualify as micro rocks.
You're welcome. I still remember the day in class we did the cereal experiment because I thought it was SO COOL. Also because my classmates were grossed out because we used a type of magnet that is typically used for feeding to cows to get bits of metal out of their digestive system as it passes through, even though the teachers were VERY CLEAR that that particular magnet had NOT in fact been through a cow. So I thought their disgust was highly illogical!
It's premarket approval system, only applies if you sell them for medical use. If a surgeon knaps the blade and uses it without intent to sell, no FDA approval required. Research purposes requires a specific exemption request, so still requires FDA approval, and the purpose of must be collecting safety and efficacy data for a premarket request.
None of which matters as the listings are incredibly broad, and "scalpel" and "knife, surgical" are approved class 1, and don't require filing.
Sticklebrickk
Gnap time
Tjitso
But wait, there's more!
Exdeath5000
That rocks
so1oeclipse
Jesus, Marie! They’re minerals
Arfulblastskat
We literally use freshly broken glass blades, essentially obsidian, to make micron thick sections of sample materials, for imaging in Transmission electron microscopy.
EntropicEVO
You guys don’t use a dual beam for that!?
theadmailgoeshere
Fall of Civilizations Podcast - The Aztecs
https://www.youtube.com/watch?v=f8JVdpWCKeM
machmach
klompet
They performed surgery on a grape ()
SquareHead27
I absolutely would not be using or holding them shards. I am an accident waiting to happen.
HeraldofOmega
They did surgery on a GRAPE
maeta
Uh. You know that is regularly recommended to med students to practice surgery techniques?
HeraldofOmega
ah, cool!
pashabigdog
I see somebody been playing dwarf fortress
Styxwash
I stole a piece of obsidian from the school science class room when I was a kid. Still have it.
LookaSquirrelbus
I'm tellin!!!!
Styxwash
Damn, should have kept my mouth shut. I got away with for 31 years, guess I had a good run.
ctsdad
Snow crash spoilers here
AtsaMattaForMe
mjkwho
How do you sharpen it?
FlyYouFLCL
That's the neat part, you don't.
pupquine
Horus has fallowed you...
AyatollahBahloni
I'm impressed that this gentleman manages to handle his obsidian without cutting the piss out of his fingers.
supermario182
Best way to kill a geologist
coffeecraver22
Is this what our ancestors used?
oprondek1978
Obsidian was the first tool used for surgery
Kehy
Accidentally cut the bottom of my foot with flecks of obsidian. Good, it didn't really hurt. Bad, those little cuts wouldn't stop bleeding for the longest time, and I hadn't noticed at first so I got blood everywhere
SamuthNBS
For *successful* surgery
imperfectregulator
And surprisingly or not so surprisingly on how you look at it, had minimal scarring for how it cut
UWAGAGABLAGABLAGABA
Obsidian is so sharp, it cuts between cells instead of tearing them. Steel will tear cells.
Wapusk
They did surgery on a grape?
SarcasticComment
and the last when your surgeon is shit
SterlingArcherSecretAgent
Obsidian is still used for some surgeries, since it is sharper than regular scalps.
twelvoclocklevel
el
Come2Japan
ChronicEd
Cualli tetl. Osda nvya. oy li lek ton un. (Tla yiganvdadi doyuka nawatli kanesd, degohlgasgini tsosda dikanesd gvhdi tsalagi tsotsilihno.
baldbear
Don't talk Nahuatl to me, Ikone se siuatl!
SPQAAE
Gave my friends some Obsidian to make their own knives....later found out they cut themselves in the process. lol
BlackTrashTiger
Let's build a Nether Gate
GingerFabulous
Was looking for you 🙌
immunity
If I remember correctly, obsidian surgical scalpels are approved for limited use in some countries. Apparently, they leave far less scarring, though care must be taken due to their brittleness.
UnBobaLievable
I've read that they're mostly used by eye surgeons
Onlyhereforthelaughs
Surgeons also didn't like them because they were too sharp, and they were used to the resistance of the steel blades.
ihateimgurffs
They can also make healing take longer because they slice through cells and not separate the cells like steel does.
SquonkGonzalesAttorneyatLaw
I thought it was the other way around.
Helsbels
Pretty sure that's not how that works. Think it's because very sharp things make clean cuts and ragged edges are easier to knit together because there's a larger surface area and more directions to resist any pulling apart of the wound.
GogaMagnet
Other way round
mirrorz
Flintknapping Obsidian is my new band name.
TheFontSnob
Hard rock?
HashMaster9k
Did you abduct a black cat from Michigan?
mondomar
I learned how to knap local obsidian last month. We have a knap group here.
dpmb69
No knapping at work.
grandfalloon
Is there a youth team? A bunch of kid knappers?
conmandavis23365
battlebetter5772
Great now we'll have micro rocks in us
Twyll
Tbf having micro rocks in us is pretty normal and not necessarily bad for health. If you mash up an iron-fortified cereal in warm water and stir it with a strong magnet, you can see the magnetic micro rocks! Also most shimmery cosmetics that are safe for putting on your eyes and lips (any lip product must be safe to eat) have something like mica in them, which also would qualify as micro rocks.
battlebetter5772
Duly noted. Thanks for the info
Twyll
You're welcome. I still remember the day in class we did the cereal experiment because I thought it was SO COOL. Also because my classmates were grossed out because we used a type of magnet that is typically used for feeding to cows to get bits of metal out of their digestive system as it passes through, even though the teachers were VERY CLEAR that that particular magnet had NOT in fact been through a cow. So I thought their disgust was highly illogical!
SpartaWolf117
obsidian is insanely sharp, but also very brittle. i'd be worried about little shards getting in the food
azgrak
The go to method for testing a knives sharpness is to shave the hair on you arm. So no worries about wasting food.
FurtiveGlancer
You probably shouldn't get out of bed either... /s
billyrayvirus
If it got into your stomach it would probably dissolve.
GamiCross
Great. Now we have MicroObsidians
SoraHjort
Just like are great great great great great great great great great great *two minutes later* great ancestors did.
[deleted]
[deleted]
ilikehornets
Teflon and food safe plastics are safe to ingest tho (in short term atleast)
BrockEffingSamson
Just a little Teflon, as a treat.
CitizenPrime
Yeah, because plastic or a Teflon is great when ingested!
msui34
Well… except for all the micro scalpel slices and subsequent internal bleeding.
FrozenMojo
Yummy!
flarflarf
it absolutely can.
bmg50barrett
Just cook it so the internal temperature reaches 165 deg F to kill all the little obsidian bacteria.
Pevinsghost
Would be a big concern if they were going to eat any of it instead of just filming it.
ArcaneM37
If I made this video I would be intending to eat that food.
Beelsebooob
Given that it’s been used for surgery, and cutting food over centuries, I’m going with the random internet guys imagined concern being non existent.
abion47
More like it probably existed but in trace amounts there's no danger whatsoever.
Barkinsons
As far as surgery goes, obsidian is not FDA approved so you can only use it for research
Pevinsghost
It's premarket approval system, only applies if you sell them for medical use. If a surgeon knaps the blade and uses it without intent to sell, no FDA approval required. Research purposes requires a specific exemption request, so still requires FDA approval, and the purpose of must be collecting safety and efficacy data for a premarket request.
None of which matters as the listings are incredibly broad, and "scalpel" and "knife, surgical" are approved class 1, and don't require filing.
Schoctane
ByMyOwnDesign
My spoon is too big
lukebagpiper2
Yay! Woohoo!!
gilarelli
I'm a 🍌!
Dissipo
Truely a meme for every occasion.
CaptSchmidtGaming
this meme is from web 1.0
truly a classic.