Why a sausage can do what your gloves cannot - Charles Wallace and Sajan Saini
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- čas přidán 27. 07. 2022
- Dig into the science of touchscreens, and find out the difference between the two most common types: capacitive and resistive.
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In 2010, South Korea experienced a particularly cold winter. People couldn’t activate their smartphones while wearing gloves, so they began wielding snack sausages- causing one company to see a 40% rise in sausage sales. So, what could sausages do that gloves couldn’t? In other words, how do touchscreens actually work? Charles Wallace and Sajan Saini dig into the science of touchscreens.
Lesson by Charles Wallace and Sajan Saini, directed by Luis Torres, Mr. Flama.
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View full lesson: ed.ted.com/lessons/why-a-saus...
Dig deeper with additional resources: ed.ted.com/lessons/why-a-saus...
Animator's website: mrflama.com
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The animators of TedEd are rally amazing at their job.
It's not a job, Ted has always used indie animators hence the massive difference in styles from video to video
@@sushantmanandhar1387 It's still a job, though
@@sushantmanandhar1387 bro wdym it’s still a job ?? 🤨
@@sushantmanandhar1387 do they get paid?
@@sopapiabruce6429 He means they are not permament Ted empoyees or something, but different ones hired for each video
The fact that our body's chemistry plays a big role in touchscreen technology is mind-blowing to me.
The fact that someone even thought about using our body’s chemistry to develop touchscreen is more mind blowing to me
@@groundsymphony yeah same
@@groundsymphony most things are discovered by accident maybe this is one of em
Yup
yes
There are so many impressive technologies we use everyday but don’t know much about.
Gone are the days of dismantling something to see how it works
@@KaliTakumi why? u can still do it
@@MarkFilipAnthony usually you just end up at a circuit board and it's like "welp, I have no clue what this does"
@@Papi_21 I was hoping people wouldn't take my comment too literally lol. I just meant that the layman wouldn't be able to do that anymore.
most people these days knows how to use a lot of electronics but they don't exactly know how it works
Ted-Ed always answers random questions which sometimes pops up in mind and vanishes in thin air... The usage different types of animation in every videos and unique examples is mind blowing every time...Thank you Ted-Ed, You don't know how much you helped me in understanding this world🙏
I always assumed water made touchscreens wonky because of how electricity works (Yet another reason for being a heavy sweater while at the gym was annoying...), but I never knew the precise mechanics. So very very cool.
That’s become someone else also had the question in their mind, but just did deeper research
wow
Wow, I didn't know there were two kinds of touchscreens! Whenever a self-checkout machine, a ticket machine or something wasn't responding I always assumed it was a computing latency issue of devices being old. But it makes sense now that with devices based on the resistive version, I wasn't just imagining that it worked better if I pressed a little harder, it needs to be pressed! Thank you so much for this explaination!
The more you know
You will always get it to work if you press with your fingernail or a stylus. Think of it as a Nintendo DS touchscreen. Actually, it's the same.
I remember before I got my first smartphone, in late 2000s, sometimes I have to press my phone's screen with my nails if the area that I wanted to touch is small.
i had a feeling. resistive touch screens a lot of the time u can feel the gap
I live in Japan and for 12 years I worked as a quality inspector for Nitto. A manufacturing company that literally makes touch screens for Apple, Samsung , Nintendo and other devices. It’s really fascinating tech and the research that goes into improving it seem to never end.
Cool
Sounds neat. Curious, is there anything important in touchscreens that Ted-Ed missed?
@@Luigi2262_ not specifically touch screen, but most modern smartphones use OLED panels instead of LCD.
@@Luigi2262_ ted ed actually did a terrific job covering this topic. I just like to add that As an inspector we search for dirt, scratches and other defects between the layers of the touch screen and all with just our own eyes, a flash light and a flourescent light. Even with the crazy machines they made to manufacture touch screens, they still can’t duplicate the ability of the human eyes. I know because they tried a lot of times and spent millions of yen making them but were never successful 😁
@@Lussimio Currently yes.
All this beautiful work for a 5 minute educational video, a priceless gift.
You can say that this video was quite touching
*rimshot*
Indeed
what amazes me is the terrifying speed this process is done. your phone has to do the math on the voltages of every single node every moment, and then react to it in milliseconds when there is an anomaly. in a time period we humans would call "instantly"
the coding and design does make it a little simpler. think instead of one processor monitoring hundreds of nodes, think of each node as doing one job, with one set parameter. if one node gets a voltage above or below that parameter (depending on if your finger decreases or increases voltage, it didnt say in the vid) then that voltage change is applied to the grid. the processor doesnt have to do the math for voltage on each node, just mainly the math to pinpoint where the electrical impulses are coming from on the grid
Words are not enough to describe how much I love this channel. Thanks so much for all this great content 🙂
Super-informative and entertaining. From the unexpected South Korean sausage anecdote to engaging imagery of subatomic particles relating to one another, I was learning and loving it. Thank you, TedED!
I've really wondered that too, especially since I tried to make a stylus at home and found it wouldn't function without a conducting material. Brilliant video, and thank you so much for such interesting content!
jjjjjjjjjjjjjjjjjjj
@Brutality Com You can wrap tin foil around a round point and it will work like a finger
@Brutality Com u can look it up here on yt it’s surprisingly simple
I have a regular pen with a small rubber tip on top of it’s cap.
that surprisingly works really well as a stylus.
I used to wrap foil around a q-tip, then put some water on it
The first phone with capacitive touch screen was an LG, not the iphone.
Let's appreciate how beautiful the animation is 🥰
No. Let's stop with the "Let's appreciate the animation" comments that litter the comment section on every video and start commenting on the actual content. Geez, give it up will you.
I agree - it sounds like a bot.
But a bit excessive, don't you think? You better be glad this user (me) doesn't turn reply sections into warzones.
@@SnoopyDoofie No, they deserve it
I don't like the animation of electrons as running people. It's bs and useless. I'd rather see some more schematics. For example include the width and distance of the layers. Or where are the horizontal and vertical linea connected to
TED-Ed is easily one of the best CZcams Channels. Both in terms of creativity and content. As a curious person and creative myself, I am glad that a channel like this exists!
I was just wondering this
iPhone wasn't the first capacitive touchscreeen phone. It was the LG Prada. Apple was the one to go more popular, though.
I clicked on this one too quickly
Me too
Same
I wonder why
Same bro
So basically I've been shocking myself for this whole time 😂😂
Yes, sorry😊
On safely amount, of course
@@DannyCiez1945 right
yeah, altho milivolts that dont do any damage at all, like AT ALL.
the rule with absorbing electricity is that if it dosen't hurt, then it dosen't startle you, so you can't call it a shock!
Wow can't get closer to "how what you're doing right now works"
There are also special gloves with special material on the fingertips to allow using touchscreens. Perhaps a sequel video explaining that function is called for.
it likely just conducts electricity like your finger
the video would be 10 seconds long
They never work for me though🤷♀️
the fingertips of those gloves have threads made of conductive metals. There isn't much that is special about them.
@@toddhowardfr would be a nice short then, tho with how they make their vids, it would be alot of work for a 10s vid lol
Gloves that say they can work with capacitive touch screens just have metallic threads weaved into the finger allowing electric charge to flow between you and the screen. Capacitive stylus work on the same principle with a metallic body connecting you to the stylus tip.
screens: touch me, we have an electrical connection
me: how can i resist, when you're capacitive
Fun fact: The first phone with a capacitive touch screen to hit the market was the LG Prada in May 2007. The iPhone would go on sale roughly a month later in June.
Not exactly as memorable of a phone though, to be fair 😄
It's crazy how touchscreens are such an integral part of our life and yet I never actually knew how they worked. Idk if its just me but the fact that they use our body's conductivity is surprising but also makes perfect sense
Those snack sausages were my childhood lol glad there's more uses for them
At a cross country meet years ago I made the discovery that bananas can be used on touch screens. Didn’t expect it to be mentioned in this video though!
Let's just take a minute to appreciate how great the TED-ed Animators have gotten
Depends on youdlr definition of "great".
Electrons animated as running people are useless. I'd rather see more of the schematics
Nice I rly love the animations in this video. And great work getting so much information over in such short time, I was wondering for a while how touchscreens actually work since we didnt learn it explicitly in physic. just noice
I'm really amazed how Ted-Ed do their content very informative and making the topic a lot easier to understand.
omg i've always been questioning about all these technology things. i don't take it for granted. it feels very mind-blowing every time i think about it. like, HOW ??
Not only the technology has come so far, I love how awesome Ted Ed videos have become. Absolutely digging this one. And I always wondered about the touchscreen so thanks for such a cool vid.👍🏻
I have a Samsung Galaxy Tab S6 Lite. It uses, of course, capacitive touch, but it also has under that some sort of technology from Wacom that allows it to also respond to a stylus. It's like a souped up touch screen.
This is amazing content! I've never searched how the touchscreens work. but when I watched this video, I just blamed myself and asked myself why didn't I. There is a lot of technologies we use everyday and we are not curious about how they work. Thank you TedEd.
Wonderful animation. Clear, precise medium to explain the tech involved!
I'd say the distinction between resistive and capacitive touchscreens is what brought Nokia down and what launched iPhone to the top.
Nokia (and other manufacturers, for that matter) had touchscreen phones before Apple, but the clumsier resistive-screen kind. The responsiveness of the capacitive screen also encouraged Apple to ditch the manual keyboard and enlarge the screen.
I’ve always wanted to know how this worked cause if you really sit and think about it, it’s amazingly kool that people were able to create something like this
please give the animator a medal, because its their work's beautiful!
SnoopyDoo said that those kinds of comments are repetitive. I agree. Not to be rude or anything.
This is actually really creative looking back just magine thinking about that. That is just crazy
You guys are ridiculously awesome!!!
Thank you for this!🤩
It’s funny how the T-Mobile/HTC G1, despite being a much better phone and the fact that Android phones outnumber iPhones 2:1, is largely forgotten because it came out very slightly after the iPhone.
I believe a lot of cat infotainment systems (up until recently) used resistive screens specifically because of gloves.
Cat?
I owned the G1 and it was NOT a better phone. It was slow, laggy, and android still needed a lot of work. It’s not forgotten, it was wasn’t the breakthrough that Apple had achieved. It would still take some time for google to fully copy apples vision.
@@Br_KN The Company Caterpillar which offers equipement for construction work, including phones. As a brand they just call themself CAT though.
I have always wondered how cell phones work, and this is one step closer to understanding it. I am also curious about how the colors on the screen and images work. How do they change color? How do they know when to change images? If you could make a video about how it works, that would be awesome! (By the way I love your videos! They are so easy to understand! Keep up the amazing work!)
As always, the information is great and interesting, and the animation is beautiful!!! I love Ted Ed
asking the real questions, thank you.
Good to know. I knew the screen on my old Nintendo DS worked through pressure but didn’t know what made phone & tablet screens work, exactly. Too bad the fun/fancy stylus collection I had for the DS are useless for the kind of touchscreen on phones.
I’m an electrical engineering student and I just learned about this in linear circuits 2! Awesome video!
It is an amazing info about something everyone uses every single day. Thank you TED.
I really appreciate the artist using the actual design of the Korean sausage snack for accuracy. ☆
Thank you for this video, uncle TED
Thank you TedEd for making learning fun and accessible! I probably would never have delved into functioning of touch screens otherwise. Love how this channel helps keep geeking about random topic relevant!!!
Also, as it is with every video, love love love the animation, especially the atom and electron characters bit! You people are brilliant 😍🤯🤯
Your videos make time on CZcams fun but you're able to learn at the same time!
An excellent match of cartoons and school
LOVE IT
It's really fascinating to see how things actually work, couldn't have known had TedEd not uploaded such informative yet lucid video 🙏👍.
Amazing animation like always !
Can't believe it's been 15 years since Steve Jobs introduced what most of us would use everyday and the many companies that produce it.
lol he died because he thought eating fruit would be a better treatment to his cancer than getting real medicine.
@@manuelg4867 lmao😂😂😂
@@manuelg4867 no he died because Obama and his democrats killed him
His company 'invented' the iphone, it didn't invent the smart phone.
also he didn't invent capacitive screens
Loved the intro section of this video, a great engaging story that draws attention and perfectly introduces the subject of the video. Kudos to the lesson's writer.
I noticed that the Windows phone’s capacitive screen is more sensitive than the iPhone.
Thank you for this information! Simple and easily-digestible
First widespread touch screen
iphone❌ DS✅
Ted Ed never fails to bring the most intriguing topics I never knew I wanted to know more about!
The reason I like TED-Ed is its educational animation. Amazing job!
its really beautiful how effortful each video of TED-Ed is.....The animations to the information
Am I the only one who’s blown away at this fact? Our body’s electricity has a role in the way touchscreens work. It’s impressive
Ayo I didn't know this, very informative video and definitely learnt something new. 📚
This is the greatest purpose of educational channels like TED-Ed: to teach us about complexity of our everyday blessings. Thank you TED-Ed!
This is something Ive always wondered but never looked up, so cool...
This made me feel very self concious of using my phone, thank you
Thank you! Now I'm even more scared of dropping my phone
Wow, this is somehow made the science beyond this complicated device a lot easier to understand.
Thank you so much, i ve been wondering about this for so long.
What about tempered glass protector? does that create another circuit ontop of the protector or is it electrical proximity that allows the input to function.
You are correct with your last guess :)
The applied screen protector can be seen as a thicker phone glass - on top of the 'grid'. If you change the responsiveness of your touchscreen you it could be that the distance is too high for light touches and it stops working
Fantastic animation as usual. Loved the little electron and proton guys.
I still can’t believe how humans managed to create such an incredible invention
Ted-Ed always coming with the answers to question I ask in my head but never say out loud
now i wont forget the fact that every time im holding and using a modern touch-screen device im also being electrocuted, just enough to use the device but not enough for it to be even noticeable. thanks ted ed
I wonder how many of the viewers are watching these for schoolwork or just like knowing random stuff
This channel is more educative than most teachers ngl
Now I understand why the Galaxy Note was created. It was for the sake of those situations where finger usage was limited. Although it's more of a staple, it'll definitely be handy during those dire times.
I thought it was invented for the clicky clicky stylus satisfaction. I seriously love clicking the stylus like a pen
@@Skittenmeow agree. If I recall those clicks weren't added untill like Note 7. Still, it is very satisfying.
They were still using the sausage while wearing gloves, where did the sausage get it's charge?
I'm still amazed at how Apple pushed forward with such a seamless touchscreen when I remember as touch screens beforehand often needed you to push really hard in because of a thick protective plastic layer.
It was not Apple, it was LG Prada in 2006, year before Apple.
@@TheAndjelika i mean, I did suspect another company would have invented/innovated that touchscreen, but with the iPhone's launch, Apple had pushed forward that tech
@@AntTonyLOLKID Apple is just a money-making machine, not anything super tech, intuitive, special. Really just some good salesman managed to wrap up things to brainwash people to buy (: If you are a real tech person, codder, any sort of enthusiast, but also the simple user who wants a good thing, you will never get Apple - ultra closed money making systems.
@@TheAndjelika I am using a Samsung Galaxy at the moment, and Custom PC. I liked Apple when Steve Jobs was still alive, and Apple genuinely pushed technology forward (the iPhone pushed forward smartphones as a norm). I totally agree Apple now is a cash grabbing machine now, but I am happy to use Apple products, but won't be purchasing any unless it fits my needs and wont be spending time with the "Genius" Bar staff, so dnt judge a book by its cover.
This video answers so many questions I had!
Some capacitive touch screens are so sensitive that you don't even have to actually touch the screen but just get REALLY close to it. And resistive touch screens are definitely very durable. The control screen on the CNC machine at work is used constantly all day long and has never been replaced even though it's been in use for about 20 years. It's scratched and blurry, yes, but works just fine!
I thought this video was going to be about SawStop. It's the same principle though: sausages and fingers produce current so they stop the saw, whereas plastic won't.
I often wonder what it would be like if we were sent back in time with some advanced technology, like a smartphone, and people in the past would ask us how it works, only for us to tell them we have no clue, and then they judge us super hard 😂 It's good to learn about the things we use so often!
Ask them how their Nintendo works 😂
People in the past would be less surprised with technology than they would be with supermarkets
Such type of videos really makes me think about how far we humans have come, it really boggles my mind when I really think about technology. From computers to laptops to smartphones to cars to aeroplanes to spaceships! It does make me, sometimes, think that technology has come to an apogee, where it just can’t get any better. However all these tech companies are still coming with crazy new inventions every year!
A couple years I had a ZenFone 2 and it had a mode for gloves, the touch screen was capacitive but worked pretty well with gloves
Fun fact
The iPhone wasn’t the first touch screen phone.
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Indeed
?
Well that's...interesting.
D'you know why it tastes better when seasoned with anger?
Wtf?
😦
The technology is quite common today that I never thought why finger could touch screen while gloves couldn’t. Thanks for TED-ED.🎉
I love watching TED-Ed videos and pretend I understand what is being said while watching the beautiful animation. Kudos
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Wonderful animation with wonderful narrator…. Love this episode!!!! Great job!
I thought touchscreen interacts only because of the force on every taps but there's more of it. Thanks TEDEd for this amazing video.
Incredible video, incredible information and animation. Hope this will reel in views for years to come.
a great video. I've been wondering touch screens for a while now
oh man, the animation and storytelling are impressively growing in every video.
Just like any other TED-Ed video - Understood details very less but absolutely loved the overview and the way things work practically
TedEd has a real knack for making videos about things even I didn't know I was interested in.
I love this, the information and the video is just amazing, such a cool animation
I JUST CANT IMAGINE HOW SMART WHO INVENTED THIS,
Me at 3 am :-
*I don’t need sleep, I need answers*
Thank you for sharing.