How to Make Simple and Effective Stone Tools | Big History Project

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OER Project

OER Project

Күн бұрын

Nicholas Toth shows how early humans made stone tools that were simple but effective.
​​Like what you see? This video is part of a comprehensive social studies curriculum from OER Project, a family of free, online social studies courses. OER Project aims to empower teachers by offering free and fully supported social studies courses for middle- and high-school students. Your account is the key to accessing our standards-aligned courses that are designed with built-in supports like leveled readings, audio recordings of texts, video transcripts, and more. Register today at oerproject.com!
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Пікірлер: 303
@jelly9026
@jelly9026 3 жыл бұрын
When your teacher didn’t sent you here, but it was my curiosity on what to do if I stuck on an island.
@animationspace8550
@animationspace8550 3 жыл бұрын
My life is so sucky rn that I would love to get stuck on a bloody island
@sheeeitmayn4384
@sheeeitmayn4384 2 жыл бұрын
Society is gonna go to ahit soon so it is wise to educate yourself on how to survive on your own.
@palacinkasmarmeladou
@palacinkasmarmeladou 8 жыл бұрын
This is awesome. I must showvthis to my 11y/o. This very last summer I was showing him how ancestors were making simple tools by this technique to kill his boredom, but couldn't figure out how to make nice edge, not knowing about using softer tool to control chipping. Thank you 👍☺
@Sahaib3005
@Sahaib3005 Жыл бұрын
Lol
@JET7C0
@JET7C0 9 күн бұрын
Good for you - your comment is 8 years old as of mine here, so your 11 year old is now 19. Hope you're both doing well - you sound like a cool parent. It's amazing to think of our very distant ancestors that _all of us_ very nearly 8 billion people now descended from, beginning to create this very basic technology, that eventually blossomed into the laptops and smartphones we're using to communicate on this site, right now, to the point we're on the cusp of landing humans on another planet, ~60 million miles away at its nearest point. Even long, long, _long_ before them, three billion or so years ago, what's called the Last Universal Common Ancestor (LUCA) lived - and from that very simple, single-celled organism, literally all life on Earth descended from, was nearly wiped out several times by asteroid impacts, shifts in climate, super volcano eruptions, etc., only to survive, evolve, and eventually lead to all of human civilization, billions of years later.
@Glad_Daddy
@Glad_Daddy 3 жыл бұрын
I sent myself here, I wanna be a archeologist, paleontologist, well you get it I wanna learn as much history as I can
@TheGonso35
@TheGonso35 2 жыл бұрын
We make the tools...and the tools make us...humanity. We are approaching tool cube, making tools than make tools of their own and beyond. Great video , excellence demonstration and clear explanations.
@seanarthur2001
@seanarthur2001 Ай бұрын
It’s really fascinating. Depending on your area the variety of stones that can be used for flintknapping is extremely staggering. In my area it is quartzite and quartz that was used the majority of the time. However in some areas of the United States you can find exceptional cherts and flints in your back yard creek. However these materials are rare that’s why our ancestors were nomadic hunter gatherers they had to travel long distances to get the sources of tool stone and move to find game and forage. I appreciate what they did, carrying a 80 lbs bag on your back full of spalls and cores hiking up and down a mountain to get these stones to where you want to go is difficult and exhausting.
@diptarkadatta2907
@diptarkadatta2907 2 жыл бұрын
The first-ever video that our professor had asked us to watch for our undergraduate module on Palaeolithic cultures:)
@Zayden.
@Zayden. 5 жыл бұрын
Thanks for sharing. I've read that tool-making, speech/language and social cooperation and rules co-evolved together.
@user-fn9on6xi9m
@user-fn9on6xi9m 3 жыл бұрын
I am Japanese but  World-wide culture to be preserved
@andrewkessler4775
@andrewkessler4775 6 жыл бұрын
When I tried to look for rocks to do this to all I learned is that the amount of sandstone in one creek bed can be staggering.
@Blue-qr7qe
@Blue-qr7qe 5 жыл бұрын
You need to find stones which will produce a concoidal fracture when struck. con·choi·dal /käNGˈkoidl/ adjective MINERALOGY denoting a type of fracture in a solid (such as flint or quartz) that results in a smooth rounded surface resembling the shape of a scallop shell.
@garymingy8671
@garymingy8671 5 жыл бұрын
Search in spring , I just learned , rocks spall , from frost heave , large thin flakes , each year ,good ones can be found , look for the glass like break in the stream bed samples , then look for that sound , Goode stone rings .
@ataraxicannihilation1401
@ataraxicannihilation1401 4 жыл бұрын
Sandstone just requires a different technique. Rather than knapped, sandstone grinds very well. If you make a basic corded pump flywheel spindle drill, and affix a round flat gritty piece of sandstone to the base of it, then a secondary crossbar+peg to rest upon your knees below your pump bar, you have a rotary grinder that will let you put an edge on a piece of sandstone fast with lower exertion, you just position and angle your sandstone being sharpened with your feet, angled against the outer edge of your spinning grindstone from your pump drill. It's not as great for the kind of surgical edge a good conchoidal fracture gives, but the ease of resharpening makes it excellent for heavier and more durable axe and hatchet blades. And after enough use your round grindstone itself can then double as an excellent circular saw.
@Blue-qr7qe
@Blue-qr7qe 3 жыл бұрын
@j Tom Waits for no man.
@senkuu_ishigamii
@senkuu_ishigamii Ай бұрын
Use the sand stone to file down your blades
@andrewkuang2517
@andrewkuang2517 4 жыл бұрын
From Mr P's Social Studies class. If you are from here also...hey peoples
@ffeff8353
@ffeff8353 4 жыл бұрын
This is fascinating, but I wish you'd show how the tools actually work -- I understand from my reading that these knives are so sharp they can cut through meat and bone as though it were butter (even though I also know they tend not to hold the sharp edge for very long?)
@creaturefpv
@creaturefpv 3 жыл бұрын
You explained that very well. Thank you.
@byoku5143
@byoku5143 3 жыл бұрын
POV- Your SS teacher sended you here
@mythicmars
@mythicmars 3 жыл бұрын
yep
@TwinkleToes_Aaron
@TwinkleToes_Aaron 3 жыл бұрын
mhm
@lisflakis1
@lisflakis1 3 жыл бұрын
Omg same lol 😂
@moopie384
@moopie384 3 жыл бұрын
Yepp
@TheBanMan
@TheBanMan 3 жыл бұрын
POV: You came here yourself because you ain't no bitch nigga
@hilaryjessicaforin8726
@hilaryjessicaforin8726 2 жыл бұрын
This is the most interesting thing that I've learned all week!
@jerryakamuadams6399
@jerryakamuadams6399 4 жыл бұрын
learned about this in my Anthropology 101 class a few years ago. Im so bored in the middle of the coronavirus quarantine, i might go in the backyard and try make some
@larryparis925
@larryparis925 Жыл бұрын
Nice demonstration. Many thanks.
@jchrg2336
@jchrg2336 3 жыл бұрын
Because in my mind this is where we all came from, from the earth itself...just like how the story tells it
@jchrg2336
@jchrg2336 3 жыл бұрын
No maybes by diving or digging deeper we will come to the science telling and actually revealing to us that we humans come from the dark ages.., we strong ones all crept and crawled, struggled oh and some fought there way out of some hell like type of place, did you'll ever wondered why space is so much and actually overpowers light look beyond the blue skies that we can see from down here on earth...it's all black and darkness out there...''the dark ages''
@InsaneGamer95
@InsaneGamer95 3 жыл бұрын
Earlier than that we all come from star stuff
@hunter7527
@hunter7527 3 жыл бұрын
U should try digging up these artifacts
@jchrg2336
@jchrg2336 3 жыл бұрын
@@hunter7527 nah, it's all overgrown with thick & dense Amazon forest, and people would see and think of me as some other maniac suffering a new form of gold-rush or so, But it depends on if I get the permit, because In my mind it still rattles that the beginning of our humans in the being form that we now have comes from here ''south-america'' by only joining the continent's to each other in the imagination we from Suriname back in the days could have hopped on a camel or an ox back an travelled to Jerusalem It wouldn't even be that absurd long of a journey if, only if the continent's were still joint to each other
@hunter7527
@hunter7527 3 жыл бұрын
@@jchrg2336 oh I’m in Texas and I like digging artifacst
@MilciadesAndrion
@MilciadesAndrion 3 жыл бұрын
Great video. Thanks for the teachings. This is something we need to learn. I liked the video and subscribed to the channel.
@lakshmansagar9624
@lakshmansagar9624 3 жыл бұрын
This professor is a gem. 👍🏻👍🏻😀
@deciblox9844
@deciblox9844 3 жыл бұрын
Thanks for sharing the information, i actually got this in my social studies text book but i never knew its so informative !
@jimajello1028
@jimajello1028 2 жыл бұрын
Ha donk! (Good flake) I Love your book - Making Silent Stones Speak. I highly recommend it to all my students. I spoke to Kathy Shick & ordered 12 copies of it. Thank you for sharing all your knowledge with us!
@ObjectHistory
@ObjectHistory 5 жыл бұрын
Very informative. I'm amazed at how quick the manufacturing process is; always pictured it being much more labor intensive.
@ChippinFlint
@ChippinFlint 4 ай бұрын
It’s really not that intensive. I can knock a nodule to a quarry biface or “flake core” in a matter of 10 minutes.
@ChippinFlint
@ChippinFlint 4 ай бұрын
The objective is to thin it as rapidly as possibly and this guy isn’t setting up his platforms properly or holding the piece with enough support to drive flakes across the median of the piece.
@chrishosek6636
@chrishosek6636 4 жыл бұрын
Great information thanks so much for sharing.
@hurricanechase13948
@hurricanechase13948 3 жыл бұрын
Thx for the info. Now I can complete my homework
@mitchellvanvugt8587
@mitchellvanvugt8587 4 жыл бұрын
Such a rockstar
@aestheticroach7165
@aestheticroach7165 3 жыл бұрын
Lmao
@sidrashah55
@sidrashah55 2 жыл бұрын
Iam very thank ful of my teacher to ask us to watch this video...❤
@rpederse
@rpederse 22 күн бұрын
Very helpful!
@bewilderment9268
@bewilderment9268 Ай бұрын
l have quite a few uniface tools including points, knives, scrapers and butchering tools. Question is, is there a time frame in history when uniface tools were "phased out" and biface gained preference? It has crossed my mind, having found uniface and biface at the same sites, that maybe the uniface was used by a more secluded group of people until they came into contact with other, more advanced, technologies. I just have not found much info on this. Great vid and thank you.
@yoshibannana7959
@yoshibannana7959 3 жыл бұрын
This is what nostalgia should be
@nadian848
@nadian848 4 жыл бұрын
Why am I watching this on my spare time? Why is this so interesting?
@MarcosElMalo2
@MarcosElMalo2 4 жыл бұрын
It might come in handy someday.
@grizamundo3892
@grizamundo3892 3 жыл бұрын
becse i am told you too
@sophiemjones
@sophiemjones 3 жыл бұрын
I don't really know i have to be here from school lol
@thomasf.5768
@thomasf.5768 6 жыл бұрын
Nicely explained. Thank you
@Gnongnongnong
@Gnongnongnong 6 жыл бұрын
At a Lithic Seminar at the University of Kentucky In 1991 or 92, I saw N Toth present a film of a group of New Guinea tribesmen knapping long adzes from basalt - does anyone know if this wonderful film is available on-line?
@zaam5506
@zaam5506 5 жыл бұрын
Very informative
@Palladiumavoid
@Palladiumavoid 3 жыл бұрын
Its good to wear eye protection or glasses when you do this
@MrFritzzz666
@MrFritzzz666 6 жыл бұрын
Sir, you make that look easy. :) :)
@shootermadness6243
@shootermadness6243 3 жыл бұрын
can you plz tell me the name of the stone which you were using first as a knife?
@jppestana1
@jppestana1 2 жыл бұрын
The best.
@sambridhipal4661
@sambridhipal4661 3 жыл бұрын
Very interesting.
@tiffkimbrel71
@tiffkimbrel71 3 жыл бұрын
So you're telling me we come from thousands of generations of McIver?? Awesome!!!
@Palladiumavoid
@Palladiumavoid 3 жыл бұрын
Yea inteligent humanoid entities have existed for a long time
@ChippinFlint
@ChippinFlint 4 ай бұрын
The idea is that you want to abrade your edges to better send flakes across the surface and get out of the cortical stage of reduction.
@shewitcher9540
@shewitcher9540 5 жыл бұрын
Thank you so much for the information
@Noone-uq5on
@Noone-uq5on 6 жыл бұрын
Very good
@jongong4317
@jongong4317 8 жыл бұрын
really informative
@raukawa4732
@raukawa4732 11 ай бұрын
Some of my ancestors were still doing this a few hundred years ago.
@ytharyana7680
@ytharyana7680 4 жыл бұрын
How you made this
@globaltesoro
@globaltesoro 3 жыл бұрын
very nice video :)
@Mista_silly
@Mista_silly 3 жыл бұрын
My teacher made us watch this in class today-
@moopie384
@moopie384 3 жыл бұрын
Same
@priyankasiddhi901
@priyankasiddhi901 3 жыл бұрын
sameeeeeeeeeeeee
@mohdnadeem8396
@mohdnadeem8396 3 жыл бұрын
Same here
@choijonwoo8461
@choijonwoo8461 3 жыл бұрын
So that's how they make a stone axe in ''DR.STONE STONE WORLD'' It's an anime series...
@bossnation1523
@bossnation1523 3 жыл бұрын
Lol imagine not hearing dr stone 5billion times a day
@brandonthefateful5095
@brandonthefateful5095 3 жыл бұрын
That’s 10billion percent right
@mythicmars
@mythicmars 3 жыл бұрын
imagine not knowing what dr stone is
@brandonthefateful5095
@brandonthefateful5095 3 жыл бұрын
@@mythicmars One of my fav anime’s
@citadel7925
@citadel7925 7 жыл бұрын
I love evolution!' This is an astonishing fact that the time course between a very early stone tool until attaching a piece of wood to it, to make something like modern hummer took as 2 million - 200.000 = about 1 million 800.000 years until our ancestries figure that out? 1 million 800.000 years! Just imagine this length of time....
@MrMontanaNights
@MrMontanaNights 5 жыл бұрын
@steveXracer You clearly do not know what the definition of a scientific theory is. A scientific theory is as close to 100% scientific fact as one can get in science. I"m not going to argue the theory of evolution with a creationist, because that's a battle that can't be won. A creationist is a creationist, and no amount of scientific theory is going to change their mind because their beliefs are their beliefs, and they are as entitled to them as I am to entitled to my own. However, you are mistaking a scientific hypothesis for scientific theory.. It is a common misunderstanding. To say that evolution is the belief that everything came from nothing, just shows a very shallow understanding of the theory.
@jamisojo
@jamisojo 4 жыл бұрын
@steveXracer the big bang
@MarcosElMalo2
@MarcosElMalo2 4 жыл бұрын
steveXracer Steve is a troll. He doesn’t really believe in anything because he doesn’t really give much thought to anything, beyond tormenting people and tricking them into having arguments with him.
@glowkami
@glowkami 3 жыл бұрын
woww amazing *claps*
@i_love_crpg
@i_love_crpg 7 жыл бұрын
So you do this with ANY rocks or just rocks by watery places
@cjjuddaustralianartist
@cjjuddaustralianartist 4 жыл бұрын
I'm watching this because I've got rocks in my head.
@TemplarX2
@TemplarX2 4 жыл бұрын
Rocks are awesome. Some rocks can be turned into super strong alloys by processing the ores in them. I used to spend a lot of times studying rocks where I was a teenager. People from the village thought I was crazy.
@lawrencefranck9417
@lawrencefranck9417 2 ай бұрын
4:16 would have been learned resharpening the tool. The knives we think of would have been ceremonial knives or points.
@bloodystatic4156
@bloodystatic4156 6 ай бұрын
I always asked this: "How did we get here?"
@hamzaahmadshaikh7648
@hamzaahmadshaikh7648 9 жыл бұрын
Very interesting!
@faizan.58
@faizan.58 4 жыл бұрын
the sound of stone breaking
@basils_gardenn
@basils_gardenn 4 жыл бұрын
Don’t mind me, I’m just here because we watched this in social studies yesterday. If you are here from Mr. Broussard’s Social Studies..hi..
@animeboy1199
@animeboy1199 4 жыл бұрын
I am waussup
@nadian848
@nadian848 4 жыл бұрын
I’m from Ms. Garanes’s social studies, but hi
@wang-nb1fw
@wang-nb1fw 4 жыл бұрын
Wot school you talkin about,.l?
@nadian848
@nadian848 4 жыл бұрын
ChocoLiLi oh it’s a completely different school, 122
@hsmacaraig
@hsmacaraig 4 жыл бұрын
I’m here cuz another vid did this but he bled and I hate blood.
@HP.Badminton
@HP.Badminton 2 жыл бұрын
archealogists find the sharp edges he cut out and say that these are the tools the people of the 21st century used to live 😂😂
@raccoonresident5760
@raccoonresident5760 3 жыл бұрын
So use old dinosaur bones for stone tools?
@raydex63
@raydex63 3 жыл бұрын
You’ve done that before haven’t you, make it look so easy👍
@diremaster1984
@diremaster1984 3 жыл бұрын
Now I can return to monke
@shaneyb999
@shaneyb999 7 жыл бұрын
I came here from my teacher Ms. Abit. Ms Abit if ur here this is Ivan from I.S.59!
@caracatitaprajita628
@caracatitaprajita628 3 жыл бұрын
I think she isnt here
@seedsoutdoors932
@seedsoutdoors932 7 жыл бұрын
Very interesting maybe i will try to make my own blade with these stones.
@fabricio-agrippa-zarate
@fabricio-agrippa-zarate 3 жыл бұрын
I was watching a video of the hadzabe hunter-gatherers, and there it was pointed out that before they got access to metals, they used to knap a blade on a piece of flint, with which they carved pointy barbed heads for their arrows out of the wood shaft itself. Now I wonder if they might have used other simple tools to do things like chopping wood. Sadly there doesn't seem to be much info since 1- probably not every hadza guy knows what did theyr grandfathers used back when there weren't any steel knives around and 2- probably not that many people are interested in knowing that... So is time for deductions and suppositions. I wonder now, can you use a piece of wood as your soft hammer? Although in Africa hadzas might have access to elephant tusks, I'm not sure how "readily" accessible it was for them.
@prowlus
@prowlus 4 жыл бұрын
Dr stone made me come here
@bozza1247
@bozza1247 4 жыл бұрын
Ben Foong same
@blackjack3257
@blackjack3257 4 ай бұрын
you can't fool me, i am an expert, you melted the stone and cast sharp tools
@niklashjruphansen7359
@niklashjruphansen7359 8 жыл бұрын
Good explanation youre a good professor
@karlmcaidey1084
@karlmcaidey1084 4 жыл бұрын
Very interesting show, thank you sir....
@ukplayer8296
@ukplayer8296 3 жыл бұрын
My man minecraft tutorials are being more realistic day by day
@lordbigoftasty
@lordbigoftasty 6 жыл бұрын
yes
@___m___111
@___m___111 4 ай бұрын
That sounds just like glass sounds in minecraft lol
@navneetjaju1607
@navneetjaju1607 7 жыл бұрын
it's nice
@peanutdoganimations1416
@peanutdoganimations1416 3 жыл бұрын
I want to flintknap but my area dont have flint/cherk
@ronpflugrath2712
@ronpflugrath2712 Жыл бұрын
Try other types of stone be suprised
@Noah-zk9dj
@Noah-zk9dj 4 жыл бұрын
from ms garanes
@dcmhsotaeh
@dcmhsotaeh 7 ай бұрын
Stone and Man Mankind was in Stone Age for 3 million years Stone gave him his first tools his first weapons his first building materials his first invention Fire No wonder stone respect stone reverence stone worship is a constant feature of almost all civiluzations Names like Peter fyodir pete Petrolina in Europeans culture mean stone In another ancient civilization India , kallappa kallesh and other common names relate to stone If newer faiths criticise stone worshippers it is their belief system but ancient civilisations have always worshipped stone just as even today religions such as Hinduism revere stone Another point stone is there at the heart of all electronic instruments from mobile phones to computers stone is there in silicon chips an integral part of any modern instrument Man is still in Stone Age ie silicon age
@saxazax
@saxazax 3 жыл бұрын
1 minute in and my jaw in on the floor
@joshuadandrea1520
@joshuadandrea1520 5 жыл бұрын
what prevents someone from making one and claiming it is very old?
@Blue-qr7qe
@Blue-qr7qe 5 жыл бұрын
Carbon dating the blood from your fingers.
@adamhubbard606
@adamhubbard606 5 жыл бұрын
I'm sure weathering has occurred at least to some point
@garymingy8671
@garymingy8671 5 жыл бұрын
If you make them you can tell , if you strike it with copper it will cold weild some into the surface of the stone. Also art was a ritual ,very often , everyone did it the same way , one style per tribe , you could try. Fake , I wouldn't ...
@sm.441
@sm.441 5 жыл бұрын
Carbon dating is a way and weathering can be done artificially
@MrEmiosk
@MrEmiosk 4 жыл бұрын
They'd put it next to their old specimen found in your area and then confirm if it is knapped the same/similair, then some other mumbo jumbo tech-magic they will be able to dicern how old the knapping surfaces are.
@hebrewdelights425
@hebrewdelights425 3 жыл бұрын
Joshua Nice
@wang-nb1fw
@wang-nb1fw 4 жыл бұрын
I legit have to watch this for my homework, because my classed missed a lot of the answers. We learning bout Lucy's fossil and Otzi I think it's interesting but.. idk Edit: Plez, I am not from any other teachers class except Ms. Coreas .-.
@jeremyluciscaelum5411
@jeremyluciscaelum5411 4 жыл бұрын
hmmmm you in Ms. Miles' class?
@wang-nb1fw
@wang-nb1fw 4 жыл бұрын
OHH MAH GAWD, ADA! ITS MEH EMILY
@wang-nb1fw
@wang-nb1fw 4 жыл бұрын
And no, I'm in Ms. Coreas Class, 6th grade
@jonnymcveigh75
@jonnymcveigh75 4 жыл бұрын
Bish plz
@ashleymarie5328
@ashleymarie5328 8 жыл бұрын
could u find flint rocks in any river
@quimblyjones9767
@quimblyjones9767 8 жыл бұрын
flint is found in chalk Chert is found in limestone or sandstone Flint and chert are almost identical.
@adamglynn4465
@adamglynn4465 6 жыл бұрын
I don't now
@gorepag
@gorepag 6 жыл бұрын
@danparks2262
@danparks2262 6 жыл бұрын
Ashley
@jacobwhite8262
@jacobwhite8262 5 жыл бұрын
No
@jackdmorgan8410
@jackdmorgan8410 8 жыл бұрын
You should have more subs
@mariannark21
@mariannark21 3 жыл бұрын
What rock is he using thats black on the inside?
@richardwiley5933
@richardwiley5933 3 жыл бұрын
Most likely flint.
@babushkablyattv2751
@babushkablyattv2751 4 жыл бұрын
Me when there is no wifi for 2 years: (Its for real)
@thewacker6837
@thewacker6837 4 жыл бұрын
museum guy daaaaaaaaamm
@jemsabaulan7885
@jemsabaulan7885 3 жыл бұрын
Who's here because of projects and activity ?
@snakes3280
@snakes3280 3 жыл бұрын
Me
@meekotheotter2801
@meekotheotter2801 11 ай бұрын
im going to become caveman, very helpful
@nabiscanolli4587
@nabiscanolli4587 3 жыл бұрын
Looks like someone showed me how to make tools out of stones.
@scooterpro43
@scooterpro43 8 жыл бұрын
I don't live near a river to find Flint rocks so is there another way to FIND Flint or could I just soak a rock
@scooterpro43
@scooterpro43 8 жыл бұрын
Thx
@bikeburgular668
@bikeburgular668 6 жыл бұрын
ChillWind Legacy i
@brushbros
@brushbros 3 жыл бұрын
Razor sharp flakes allowed primitive women to shave. Men used them to cut-up their food. See what resulted?
@demondemon3418
@demondemon3418 8 жыл бұрын
I live in Vietnam , the way I can lamg buffeted by such stones
@gabo2161
@gabo2161 6 жыл бұрын
4:31 pinkie gone in 3..2...1...
@MarcosElMalo2
@MarcosElMalo2 4 жыл бұрын
“Hold my . . . uh, wait. When were fermented beverages invented?”
@leftcheek8334
@leftcheek8334 7 жыл бұрын
does anyone know anywhere in NJ to find flint
@israelbean9907
@israelbean9907 7 жыл бұрын
sexyDerp yea nere a large river
@ryziemac5470
@ryziemac5470 5 жыл бұрын
It’s a lot about the patina also and the deposit that these where sat in for 100s of thousands years. A newly made one will be fresh with potential air bubbles or lil marks from when just made. If u try and make one u will see what I’m on about
@ramchander3761
@ramchander3761 3 жыл бұрын
I am hvm Convent Senior Secondary School student and you are which student and I am in Ludhiana
@hannah6612
@hannah6612 5 жыл бұрын
Came here from mrs.Racheals
@santadas4338
@santadas4338 6 жыл бұрын
the stones look like cucumber. 😂😂😂
@stellarjay952
@stellarjay952 4 жыл бұрын
why is it darker on the inside? was it a darker rock contained within a lighter rock matrix?
@richardwiley5933
@richardwiley5933 3 жыл бұрын
The lighter outer covering is called cortex, which consists of layers of material caused by natural weathering; These layers can be of various thickness, which Knappers will remove to reveal the underlying knappable material.
@aestheticlytiktok4987
@aestheticlytiktok4987 3 жыл бұрын
the guy: breaks the stone like its nothing. Me who can't even break a ramune bottle without dropping everything: 👁👄👁
@jmsdfdamacloid__9306
@jmsdfdamacloid__9306 3 жыл бұрын
Shut up
@mythicmars
@mythicmars 3 жыл бұрын
@@jmsdfdamacloid__9306 ?
@jmsdfdamacloid__9306
@jmsdfdamacloid__9306 3 жыл бұрын
@@mythicmars copie paste comments i hate them
@runningwild1724
@runningwild1724 6 жыл бұрын
Sooooooo we can preform surgery with it?
@richardwiley5933
@richardwiley5933 3 жыл бұрын
Absolutely! Scalpels made from obsidian flakes are made to this day. They are the sharpest cutting material known to mankind, and are 100s of times sharper than the best metal scalpels. They are quite expensive and are used primarily by plastique/cosmetic surgeons as the incisions are very thin and heal much faster with less infection and scarring.
@garychynne1377
@garychynne1377 7 жыл бұрын
DO YOU STILL LIVE IN A CAVE---CAUSE THIS IS REALLY GOOD. THANK YOU AND TAKE CARE GARE
@cameronbrewer5089
@cameronbrewer5089 7 жыл бұрын
I live in PA and I've been actively looking for flint in Creek beds and I've looked at other (how to spot flint rock videos) and yet every damn rock I think is flint that I pick up and try and break turns out to be just an ordinary river/creek rock......
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