I think my brother had I think it was a Nokia phone with the walkie talkie function in the early 2000s, he tossed it to a co-worker off the 3rd floor balcony... landed on concrete... kept working, another time it fell out of the van and was ran over...still worked..
My favorite story is that time when a construction worker lost his phone on site and then like 15+ years later when the building was torn down they found it inside on of the concrete foundation and after being charged it still worked.
Interesting video! I had a chemistry professor way back when that worked for the company where Teflon was invented. The story goes that he and another chemist were doing an experiment which didn't go as they expected. The chemical reaction created a substance that did not react with anything nor could any other material react with it. Rather than scrape the experiment, they recreated it and eventually named the product Teflon! Because of their contractual agreements with the company, neither of them ever made a penny from their work developing Teflon!
It is truly wonderful that I'm learning about all of these brilliant women scientists! Too bad no one thought to talk about them back when I was a teenager. Thanks, SciShow! :)
3:52 True, while a liquid is a state of matter where molecules are free to move around and fill the shape of its container, isn't that only specific enough to be the definition of a fluid? To be more specific, shouldn't at least another trait be that it doesn't expand to fill its container?
I certainly knew what they have in common couldn't have been strength and durability: Kevlar can stop a bullet while if you drop a smartphone from less than three feet the least it'll shatter its display.
It's probably worth mentioning that the LCD has mostly been replaced by the LED array display. Pretty much all modern displays are LED, or a variant thereof.
Depends on the Application. A lot of phones use OLED or something similar. Computer or laptop screens still use mostly LCD screens, although with LED backlighting. Screens with "normal" LEDs are actually really rare and not really available for consumer use.
The "LED array" just refers to the backlight on the LCD panel. Actual LED screens are either OLEDs or giant scoreboards. While OLED TVs do exist, they are prohibitively expensive.
@@downrangefuture6493 as far as I know they are actually working on real LED displays. Although they are still in prototype stage from what I know. And some cinemas use LED screens. Although I don't know if they are closer to OLED or score board type of screens.
I don't think he does scientific research or publishes any articles, he's an entertainer, not a scientist. (I suspect he did go to college, though I have no idea which major)
@@alext7074 That is absolutely correct. And, if a kevlar item does stop a bullet, even without it tearing, it needs to be disposed of. The act of absorbing that level of energy is a one time occurrence. Generally, it weakens the item to the point of uselessness. Edit: Point is; a kevlar item will only stop one bullet.
What about a shield with magnets plates negative &negative or positive facing eachother and wire connecting under and on top. And maybe Rochelle salts between plates .that release electrical impulses when vibrated
Instead of using a metal case for the phone why not use kavalar instead, it's stronger and lighter. I noticed there's more companies making their phone itself out of Kevlar, but their private companies. now only if they could come up with a liquid Crystal screen that would repair itself when crack or drop. You could save so much money on screen replacement.
Right out the gate you got jokes 🤣🤣🤣 To be fair the armour of the future will have touch screens and insane haptic sensors... Sooo. Where's my bullet proof phone 🤔
This comment is here to let you know that liquid crystals does in fact sound like something you could buy on a street corner and bring home to have a euphoric time.
Ummm... Did I seriously just bump into someone I know on _UA-cam_ after cutting myself off pretty much all social media?! Crazy... Hi! 🙋🏽♀️ How are you holding up with quarantine? Still managing to perform? I hope you're well! Cheers!
I actually had a phone that had a Kevlar back, but no LCD screen (AMOLED, instead), so for that the answer to the question "what do Kevlar and smartphones have in common?" - well...
@@MrQuestful what?? No! Chitin is an aminated polysaccharide, we humans aren't even able to produce or digest that stuff. Our hairs and fingernails are made of ceratin which is a protein, not chitin.
Kevlar is said to be not arrow proof. I bout Kevlar gloves which do not seem to be knife resistant like cow leather. I do not trust. Also, if the only benefit is they are lined up in one direction, this means only strength in the direction of which the alignment, which would explain the ease of the cutting my Kevlar gloves from Menards. I would think that there must be more weave pattern tricks to make use of the linear strength, which wasn't done by gloves.
The bullet proof property is dependent on laying out the fibres and then flaps of textile such that they distribute the force and energy. Arrows have a much sharper point so might be able to penetrate between fibres or generate a much higher pressure at a small point, cutting some fibres. The gloves... Idk, things found online may not even be real kevlar. I would have thought multi-directional woven kevlar would resist a blade, but maybe it's again a case of the pressure at the edge being sufficient to cut fibres, where a blunter bullet tip would be caught in the "net" structure by many more fibres.
In the event of a zombie apocalypse, I vote, a kevlar helmet for Hank! That’s the way I say someone is really smart; I vote aloud for them to receive a kevlar helmet in the event of a zombie apocalypse. Otherwise, if I harbored copious contempt for you, I’d simply say, “You’re on the bus.” (referring to a fantasy bus which, according to the strict rules of my fantasy, suddenly plummets over a cliffside, thus conveying various heinously disagreeable occupants to their fiery death, HOWEVER, nobody at SciShow has ever struck me with such a superlative lack of brilliance and beneficence as to warrant the curse, “You’re on the bus,” so please let me reiterate to the contrary: A kevlar helmet for Hank, who is absolutely not on the bus!). Cheers! -Phill, Las Vegas
I discovered that I could use Kevlar as a motor shaft pressure fittting insert for my drone that manufactuerers (in China) don't make bolting shafts for. It works wonders. And I am so surprised just now that Kevlar was invented by a woman right next to my state. My drone would not be able to do the adrenaline proximity dives without Kwolek's Kevlar. My drone's videos are in my channel.
I think it would be useful to have to write a comment explaining why you give it a thumbs down before it counts... and those comments are on their own thread, which may or may not be able to have replies, but would be interesting to see what is going on in the mind of someone who thinks this is a thumbs down video
This video wasn't brought to me by liquid crystals, at least not as a display. I don't have a display and take in UA-cam solely through audio. Also, I wish they made cell phones with physical keyboards and no screen that breaks easily and eats up battery life. Disclaimer: I'm blind.
Here's to Stephanie Kwolek's persistence!
"Steel-reinforced dry spaghetti" is my new favourite sentence.
"Liquid Crystals "
Laughs in OLED
“A phone is not designed to stop a bullet” Clearly you haven’t met a Nokia.
I think my brother had I think it was a Nokia phone with the walkie talkie function in the early 2000s, he tossed it to a co-worker off the 3rd floor balcony... landed on concrete... kept working, another time it fell out of the van and was ran over...still worked..
@@darrenswails those were motorolas i60, i90, etc.
@@SonOfTheDawn515 👍 details are scetchy 15 years later 🤣
Baaaaahahahaha.... yes, indeed. Made of unobtanium. You could put those phones in a hiking sock and beat an attacking croc back with it.....
My favorite story is that time when a construction worker lost his phone on site and then like 15+ years later when the building was torn down they found it inside on of the concrete foundation and after being charged it still worked.
“A Kevlar vest makes a pretty bad touch screen” Was that a challenge, Hank?
Before everyone decided that phones must have glass backs, Motorola used to make some kevlar-backed phones.
Yep, my first smartphone was the 2011 Razr, which had a Kevlar back and, funny enough, an AMOLED screen, not an LCD.
I love their battery life
My Droid turbo 2 had it
@@Penguinacid it was "ballistic nylon" not kevlar, it just used the same weave as kevlar to look cool
@@gaspersavle161 Still better than glass for the back of the phone
Interesting video! I had a chemistry professor way back when that worked for the company where Teflon was invented. The story goes that he and another chemist were doing an experiment which didn't go as they expected. The chemical reaction created a substance that did not react with anything nor could any other material react with it. Rather than scrape the experiment, they recreated it and eventually named the product Teflon! Because of their contractual agreements with the company, neither of them ever made a penny from their work developing Teflon!
@@metamorphicorder Really? So what's your point? I never said that they were "cheated", just told the story the way it was told to me!
Saying "Hello" near end of vid is like having a date first then introductions just before departing.
That's an eeriely accurate description of tinder dating
I can't believe your wife told you about that
Thank you Stephanie Qualic
Great job with the example and animation of ball and net.
Always excellent! Thank you Hank, and "Hello" to you too.
Really neat topic thanks for the episode
SciShow is the best show.
It is truly wonderful that I'm learning about all of these brilliant women scientists! Too bad no one thought to talk about them back when I was a teenager. Thanks, SciShow! :)
Congratulations, little parrot, you repeat the lesson well
3:52 True, while a liquid is a state of matter where molecules are free to move around and fill the shape of its container, isn't that only specific enough to be the definition of a fluid? To be more specific, shouldn't at least another trait be that it doesn't expand to fill its container?
hexagons are the bestagons
unexpected grey reference
Yes, yes they are.
Ah, a person of culture.
I have to wonder how many thousands of lives Kowalleck has saved with her invention.
Not thousands... millions
Then again, how much more willing are we to send armed people into firefights because of it? Scores might even out, or even lean the other way...
With LCD screen? Millions.
easily hundreds of thousands possibly edging towards a million.
I wonder how many lives Her company had taken
Remember when the best LCD technology was in digital watches and calculators?
GameBoy 🤗
In all fairness... we still use our phones as calculators and clocks...
Someone's sassy for 2021 lol Loved the play of words and general shenanigans
Fascinating stuff!
Love the recent increase in chemistry content)
I certainly knew what they have in common couldn't have been strength and durability:
Kevlar can stop a bullet while if you drop a smartphone from less than three feet the least it'll shatter its display.
*Uses lbs:* Americans understand.
*Shows soccer ball:* Americans confused, run screaming in panic.
As long as you still call it a soccer ball we’re good
@@poseidon8466 foot ball
Should he have used a hockey ball instead?
Rent free
@@helloitsme1785 madlad
Truly amazing that kevlar and LCD are created at the same time. 🤯
Super love the jacket guy, way to rock the Canadian blazer! 😂
One of my old Motorola phones had kevlar in the phone frame.
I was going to comment about Kevlar sails, but you got it!
You can even get a Kevlar Phone case for your phone! Check out CarbonThat. Great Video as always!
Chemistry is fascinating
It's probably worth mentioning that the LCD has mostly been replaced by the LED array display. Pretty much all modern displays are LED, or a variant thereof.
Depends on the Application.
A lot of phones use OLED or something similar. Computer or laptop screens still use mostly LCD screens, although with LED backlighting.
Screens with "normal" LEDs are actually really rare and not really available for consumer use.
The "LED array" just refers to the backlight on the LCD panel. Actual LED screens are either OLEDs or giant scoreboards. While OLED TVs do exist, they are prohibitively expensive.
@@downrangefuture6493 as far as I know they are actually working on real LED displays. Although they are still in prototype stage from what I know.
And some cinemas use LED screens. Although I don't know if they are closer to OLED or score board type of screens.
What about my droid turbo that had the Kevlar back design?
How does this scientist not have more global recognition?! Like wtf?!
I don't think he does scientific research or publishes any articles, he's an entertainer, not a scientist. (I suspect he did go to college, though I have no idea which major)
because reporting on science & discovering new stuff are two different things!
Kevlar is also very fire resistant.
It's funny how my screen can crack my falling from a table but kevlar can stop a bullet without a scratch.
Kevlar will get more than a scratch when shot at... If there aren't enough layers, the bullet will go straight through.
@@alext7074
That is absolutely correct. And, if a kevlar item does stop a bullet, even without it tearing, it needs to be disposed of. The act of absorbing that level of energy is a one time occurrence. Generally, it weakens the item to the point of uselessness.
Edit: Point is; a kevlar item will only stop one bullet.
@@frag4007 came to say the same thing.
What about a shield with magnets plates negative &negative or positive facing eachother and wire connecting under and on top.
And maybe Rochelle salts between plates .that release electrical impulses when vibrated
Instead of using a metal case for the phone why not use kavalar instead, it's stronger and lighter. I noticed there's more companies making their phone itself out of Kevlar, but their private companies. now only if they could come up with a liquid Crystal screen that would repair itself when crack or drop. You could save so much money on screen replacement.
Right out the gate you got jokes
🤣🤣🤣
To be fair the armour of the future will have touch screens and insane haptic sensors... Sooo. Where's my bullet proof phone 🤔
Go Steph!
is a amoled screen still a liquid crystal or a light emitting organic molecule
No, amoleds aren't liquid crystals. They are organically grown diodes that emit light.
Braided fishing line is basically Kevlar without the brand name.
Hi Hank!
'While most of us don't need kevlar vests" ...hahahahah from the USA you guys need Kevlar vests for your kittens.
This comment is here to let you know that liquid crystals does in fact sound like something you could buy on a street corner and bring home to have a euphoric time.
Scishow: *talks about any female scientist*
Me: *SMASHES LIKE BUTTON SO HARD IT SHATTERS MY LIQUID CRYSTAL SCREEN*
Ummm... Did I seriously just bump into someone I know on _UA-cam_ after cutting myself off pretty much all social media?! Crazy...
Hi! 🙋🏽♀️
How are you holding up with quarantine? Still managing to perform? I hope you're well! Cheers!
Kevlar gloves are worth the money!
I actually had a phone that had a Kevlar back, but no LCD screen (AMOLED, instead), so for that the answer to the question "what do Kevlar and smartphones have in common?" - well...
How did kwolek spin the liquid into string??
science
I wish they’d make phones out of chitin, like beetle shells.
synthetic ruby in lenses
Chitin. Mushrooms
@@DeaconHo yes, they are in both, and our fingernails and hair.
@@MrQuestful maybe we are mushrooms too :D
@@MrQuestful what?? No! Chitin is an aminated polysaccharide, we humans aren't even able to produce or digest that stuff. Our hairs and fingernails are made of ceratin which is a protein, not chitin.
Lab workers: Huh? Wtf? Cool! Wtf? Oops? Oh, Yay?
Liquid crystals is the coolest thing I hope ever heard
"Most of us will never wear a kevlar vest" Oh my sweet summer child, this video was clearly made before January 6th.
Ooh - Hank said, "Venn Diagram". Nice.
ITS HANK GREEN!!!
Yeah AT&T, Verizon, Sprint, T Mobile, Boost Mobile, And Metro PCS all seem to be going through with it
Kevlar is said to be not arrow proof. I bout Kevlar gloves which do not seem to be knife resistant like cow leather. I do not trust.
Also, if the only benefit is they are lined up in one direction, this means only strength in the direction of which the alignment, which would explain the ease of the cutting my Kevlar gloves from Menards.
I would think that there must be more weave pattern tricks to make use of the linear strength, which wasn't done by gloves.
The bullet proof property is dependent on laying out the fibres and then flaps of textile such that they distribute the force and energy. Arrows have a much sharper point so might be able to penetrate between fibres or generate a much higher pressure at a small point, cutting some fibres. The gloves... Idk, things found online may not even be real kevlar. I would have thought multi-directional woven kevlar would resist a blade, but maybe it's again a case of the pressure at the edge being sufficient to cut fibres, where a blunter bullet tip would be caught in the "net" structure by many more fibres.
That felt like a tribute to James Burke and his "Connections" seriese!
If you haven't seen it, check it out!
Awesome
Ha! I'm watched this using an LED screen... You should totally do a video on diodes!
LED screens are still LCD, it's just that the backlight is emitted by LEDs instead of other kind of sources.
jokes on you, my phone's screen is oled
@Nolan Is Innocent Which is also oled
I thought oleds still had liquid crystels built in
@@melody3741 Oled uses organic materials to emit light, vs LCD that uses a backlight to pass light through twisting crystals
Can anyone explain to me what OLED is in simple terms bc I have no idea?
@@nicoka484 one is self lit one needs a back light
As I'm watching this on my CRACKED phone screen!!! Too bad they can't integrate Kevlar into Glass Screens...
Thanks Stephanie Kwolek for your invention that let me look at memes.
o. g. hank!
Does OLED have liquid crystals?
no
They are both made of baryonic matter! ^^
I miss Hank!
i had one and it saved my life in nyc when some punk tried to rob me and he shot me with a .25 pistol.
Hello too!
Oled for me
Posted 14 seconds ago? I’ve never been this early before, holy cow!
@Neha Mr Beast. Ok bs
Do you have a video on carbon fiber?
In the event of a zombie apocalypse, I vote, a kevlar helmet for Hank!
That’s the way I say someone is really smart; I vote aloud for them to receive a kevlar helmet in the event of a zombie apocalypse. Otherwise, if I harbored copious contempt for you, I’d simply say, “You’re on the bus.” (referring to a fantasy bus which, according to the strict rules of my fantasy, suddenly plummets over a cliffside, thus conveying various heinously disagreeable occupants to their fiery death, HOWEVER, nobody at SciShow has ever struck me with such a superlative lack of brilliance and beneficence as to warrant the curse, “You’re on the bus,” so please let me reiterate to the contrary: A kevlar helmet for Hank, who is absolutely not on the bus!). Cheers! -Phill, Las Vegas
Woo! I'm 53!
I discovered that I could use Kevlar as a motor shaft pressure fittting insert for my drone that manufactuerers (in China) don't make bolting shafts for. It works wonders. And I am so surprised just now that Kevlar was invented by a woman right next to my state. My drone would not be able to do the adrenaline proximity dives without Kwolek's Kevlar. My drone's videos are in my channel.
15! Woohoo!
Hmmmm.. body armor made out of phones LET’s DO IT!!
_"Here's What Kevlar and Your Smartphone Have in Common"_ ... All I know is that neither one makes a very good drive belt for a Yamaha Vino Classic.
Phones have been using LED based displays for about a decade... not LCD. If you're watching this, it's probably on an LED type display.
0:21 (happy potato noises)
I am not being pedantic, but not all handsets have liquid crystala in their displays.
*Why does your voice sound different when heard on a recording?*
You hear your own voice not just by what is projected out of your mouth, but also the reverberations in your skull and such.
Nothing beats a Cathode Ray Tube.
Seriously, If you have to choose one of them, choose nothing.
CRT still has the finest grains tho!
My phone doesn't have and LCD screen. It's an OLED screen. Gotcha!
Some part in a phone has carbon right?
Wait, so if I break my phone screen, liquid will spill out?
Tesla had an issue with it leaking out of the screens in the cars
Kind of, there isn’t a lot of it, but if you look at a smashed or cracked LCD you will see the liquid being smeared around
Unless its an oled
I read it as caviar and smart phone for some reason?
Damn, Hank looks good in that jacket.
I can see you! HELLO!
wow
Kwolek: Can you give me materials?
Enterprise:to find polymers?
Kwolek:Yeeess
Actually discovers liquid crystals like a boss
Hemp woulda worked!
I don't know scishow still using imperial system...
Why isn't my phone wet when the screen breaks then?
because its only liquid in a material science kind of way & cant really flow away/spill.
atleast not enough, so we can call it wet!
@@mho... I see lol thank you! 👍 I have some researching to do.
27 seconds and ALREADY one thumbs down? WTH
Well, it's deserved as they tell a lie in less then 27 seconds
I think it would be useful to have to write a comment explaining why you give it a thumbs down before it counts... and those comments are on their own thread, which may or may not be able to have replies, but would be interesting to see what is going on in the mind of someone who thinks this is a thumbs down video
That would be great as it would stop nonsense likes.
It was named after her brothers Kevin and Larry
I am watching on a projector screen
Oled represent
Chwałek not Kwolek :P
Most modern smartphone displays are actually OLED and not LCD
This video wasn't brought to me by liquid crystals, at least not as a display. I don't have a display and take in UA-cam solely through audio.
Also, I wish they made cell phones with physical keyboards and no screen that breaks easily and eats up battery life.
Disclaimer: I'm blind.
💚💚💚