Touch Screens & Quantum Tunnelling - Sixty Symbols
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- čas přidán 23. 02. 2010
- We look at the latest touch screen technology and how it uses the strange phenomenon of quantum tunnelling. More videos from us www.sixtysymbols.com/
With Philip Moriarty - Věda a technologie
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right tru the door
Tchrue
Wow haven't the Irish suffered enough?
I love how even though we can't understand quantum mechanics to 100% certainty we can still make it work for us. I love science.
I guess it's similar to how you can throw and catch a ball without knowing calculus.
Filip. Or can play pool without knowing geometry and physics...
jake rheingold But can you play pool without an understanding of motor skills?
I think scientists actually have a pretty solid understanding of quantum physics, almost to the degree of their understanding of classical and relativistic mechanics. If they did not understand quantum mechanics I don't think they would have been able to come up with this technology.
swasomekayaker I think you're right about Feynman. I just heard Carroll use it recently. I quoted a quote I guess haha.
2018 and watching this on my touchscreen smartphone ! It almost feels like I'm living in the future while watching these videos.
you literally do
@@anonymouscork xd
Yeah, I am feeling that too
Thanks for that. Cleared a lot of stuff up for me. Nice to see someone with some passion speak about what they love.
As usual my brain hurts trying to grasp the content - I love it. Thanks for taking time out of your schedules to do these videos. Keep them coming!!!
this channel is so great! thank you for taking the time to explain all these amazing things in ways i can understand! :)
This was really easy to understand! I'm motivated for learning more about quantum tunneling because of this :)
Brady Haran, hats off to you for putting these videos together! I absolutely love to hear these professors from U of Nottingham, especially Philip with his intensity & passion, he really gets "true" to me! I couldnt possibly even pick a favorite, theyre all fantastic to listen to. so Brady, thanks again
Videos like this are what make this one of the best channels on CZcams.
This is exactly the right attitude to have. There are plenty of videos helping people pass physics exams, but not enough physics videos where people actually want to watch them out of fascination. The periodic table of videos do exactly the same thing but with Chemistry, and do that well as well.
And this video sums up why I love sixtysymbols!
Amazing video and a good explanation on a hard subject!
A hard subject that we utilize on a daily basis. 🙂
I'll second this, for such a complicated subject you did awesome explaining it.
Thank you for the explanation, very interesting and educational!
Loved the video,especially the last part. :)
You have explained quantum tunneling better than any other video i have seen.
Brilliantly explained!
Great video!
I've heard about quantum tunneling many times, but never had an intuitive understanding of it until i watched this video. Thank you! (it seems so obvious now) Now I think I understand STM!
I liked what he said at the end, that even as we don't really understand quantum physics, as in, having an intuitive grasp on it, we still use it. That's amazing
Great episode!
great vid.. keep up the gd work
that was rly, rly interesting, ty for this, much clearer now o.o
Should of explained Tunneling earlier on in the video. I figured it out as the video was playing but I missed some concepts in the beginning of the video because I was focused on the tunneling concept.
Awesome video, 5 Stars
wow i really love these videos, Keep up the good work, cuz i wanna see more stuff ;) Physics FTW ^^
Great video!
can we use the uncertainty principle to further increase the likelyhood of quantum tunneling by very accurately defining the speed of the electrons and thus increasing the uncertainty in its position?
Thanks I was so confused in class but you explained it so well, I'll be able to know it for gcse's on tuesday
Very great video indeed! Though I have a question about tunnelling in general, why electrons in valence band of a semiconductor do not tunnel to the conduction band?
Interesting stuff.
Couldn't help but notice the several copies of RICHARD DAWKINS books in the background haha, all thanks to HD.
I know nothing of quantum mechanics but that made perfect sense. Thank you.
awesome stuff thanks .
The tunnel diode was the first practical semiconductor device to utilise the principle of quantum tunnelling. It can actually be operated both forward- and reverse-biased due to the tunneling effect, and the diode behaves very differently when used in reverse.
I remember Crisis Angel once explaining one of his tricks the way you explained the football at 1:20 :P
Awesome video, more nanotech asap please!
sir its great to watch ur videos. i learn a lot frm all ur videos bt my request is u try some animations to explain some concepts.
my way of understanding. say u are an electron standing on a rock in a vast puddle with other rocks everywhere if the closest rock is six feet away or less u are almost guaranteed to be able to get to the next one. as they move farther apart your chances get slimmer very quickly. so these rocks are like the nano particles. they are placed just far enough for you to not be able to hop, baring an incredible burst of energy (which electrons are capable of). when someone pushes on the screen these rocks move closer together, so as soon as you feel confident enough to get there you start hopping and obviously the harder they push, the easier it is, so you'll move a lot faster (less resistance, more current)
That concept of an electron having a non-specific location is amazing. Just deepends for me the mystery of 'what is stuff?'
well he did an amazingly good job of what the process is and that better than nothing
explained with a beauty :)
Big fan myself too haha.
By the way, you win the award for pronouncing "wave" in the most interesting manner. :)
Nice vid!
Amazing!
LOL! It's actually kind of funny! I'm not even really irritated anymore. How many more of those things do you got?
@otleybey Also, when you make the "comparison" between everyday objects and the quantum world, QM just seems more wonderful...
For me that is what Sixty Symbols is about... Creating that sense of wonder.
If we sat and talked about equations and fuzzy objects... well, that doesn't really press my wonder button!
We're not trying to help people pass exams... Just make them interested!
I promise you Professor Moriarty has a pretty good grasp of the maths, etc, I just don't let him talk about it!
I love to hear you talk
BRILLIANT THANK YOU
you guys should do a video on the elementary particles, hadrons, baryons, leptons, etc, using various kinds of balls
@secret212000
Yeah, in the process of fusion energy is released. It requires lower energy to be fused as a helium atom than a hydrogen atom. When energy is emitted from the atom it is sent off in "quanta" this quanta has a specific energy and corresponds to a specific frequency on the electromagnetic spectrum. This frequency is the color of the star.
Was anyone else thoroughly blown away by how ingenious the technology is?
It is because an electron is formed by empty spavew, it is an effect of space. Space and energy between two wavefunctions is quantified. If extra energy is added within that space, an electron will appear
Hey you guys should do a video on quantum levitation!
love this guy!! he's such a boss!
Every instance of -C has an anti+C compressing+4-0-4+-decompressing expanding spheres dividing gravity and this input+0/1-output entanglement of spherical wave fronts is why objects can have broken symmetry at otherwise relative points of space coming into and out of existence and is why a high wave+amplitude wave-centre can move through one slit whilst its pilot-wave fronts move through the other we have interference now but we also have Pauli's exclusion principle where two sources of info
could you guys do a vid about the bose-einstein condensate please?
I wish the next Sixty Symbols video is about the rest of our planets in the solar system, don't get me wrong though. I enjoy any video from Sixty Symbols.
Just remembered how me and my late father watched Star Trek The Next Generation. We both lowed the show, yet he claimed there will never be such thing as touching glass surface to be used instead of classic buttons. It is sad he is not alive to see what we have of our mobile devices today.
Well, this went over my head
Electricity, semi-conductors are quantum level phenomenon, and their controlled use will bring us more surprises-!!!
Brady, I was watching another video about Quantum Physics just now, and was wondering:
When they say that photons of light change from being waves to particles when observed, shouldn't you be able to record it on a camera while not watching, and then watch it afterwards, since you are not watching "real life" but a recording, thus not actually observing the event, only the camera's rendition?
That certainly has a ring to it.... I would say something more like "tackleball" or something along those lines.
@Moriarty2112
Maybe you've heard of it (I only found out recently), but there is one type of memory that's both RAM and EEPROM. It's called FRAM (F stands for ferroelectric). I don't know the physics behind it, but it's as fast as RAM while being non-volatile at the same time. Just tossing it as an idea for a video if you feel like it.
This video is brilliant! Put that guy on more often. :D
@WZaDproductions
Actually that's the electrons moving through the air. With tunneling they go from one point to another directly. The air may be an insulator, but it can still conduct electricity, just not very well.
Ok, but how can i "feel" where is the exact position of my touch? There is something like a matrix o conductor that feel this change and tell me the position?
Very good explanation,
Thank you
@MrMaffen lol ur right btw do u do c++ programing cuz != is not equal to in c++ or is it the way u actaully type it on the internet i might sound stupid but its just a quesiton?
Depends on what you mean by "very, very, VERY small"...
Its based on the amount of electrons flowing through it, while when you are touching it you are increasing the propability for each electron to take that gap, the total amount for that should be relativly constant.
So, it might be slightly higher than the chances for the universe from litteraly nothing, while in the last case it doesnt matter how unlikely it is, as long as there is nothing it doesn matter how long it took...
So, if am correct in understanding, the pure fact it is possible and not the probability rules due to the shear infinite iterations and outcomes of possibilities, packed in a moment?
Thank you ;)
My problem is, exactly the same consistency of probabilities could be obtained from the flip of a coin; the same thing applies, before you flip it, you really can't predict which side it will land on, but the probabilities are still the same. However there still exists some convoluted mechanism which governs the outcome.
What do you mean governs the outcome?
It states of a high degree of change in exchange on the third plane (in and out), but what is the senitivity on the other two planes?
In the future could it be said that this could be used to pick up finger prints when the user touchs the screen.
So is this why when I push my iPhone screen I get a different menu than when I lightly touch it? Or is the tech still a long way off (in 2017)?
Is the resolution capability fine enough for this technology to enable touch-screens to read fingerprints? If it's sensitive to deflections on the order of thousandths of millimeters, I would think it could distinguish between the ridges and valleys that make up a fingerprint. Unless the material that sandwiches the QTC layer is too stiff to transmit that fine deflection. ...am I making any sense? ;)
I see this was posted in 2010, is this technology commonplace in smartphones nowadays?
3D Touch on the iPhone 6s boiiii
does the iphone really use this technology?
awesome! this would of gone over my head if i had not watched what the bleep do we know
i;m not even a collage student, but i think that the tunneling effect is some what applicable to all materials, but the film is what has the massive change in resistance. most insulators do not have their properties relative to conductance change massively when pressure is applied. also about your temperature question, tunneling does not raise temperature by its self, all things experience tunneling. but when things are close this is when it starts to affect things we can see, like the sun.
I get resistive and capacitive touch screens, no probs. I've got some bits of quantum tunneling material. It's a sort of black foam rubber, and I think there's some controversy whether it's really using QT. Is QT being used for any touch screens now? Why? The latest news to me is a longer range capacitive screen which gets 3d hand gestures. Available now, for diy electronics fans.
As an Irish American I only wish I had that awesome Irish brogue. Perfect for explaining quantum tunneling.
Another funny thing about barriers is that if the particle's energy is larger than the barrier height, classically it would mean that particle will get past the barrier with a probability of unity. In QM, however, even with energy barrier lower than the particle's energy, the probability of particle getting past the barrier is less than unity, meaning there is as possibility for it to bounce back. Using same example, the ball will essentially bounce back from the open door (door frame)!
@TheJaws0413 Because he's a very thoughtful person who doesn't want to (overly) disturb the person in the next office maybe
right, how much of an effect would heat have. but also when a circuit is complete, heat is created depending on the resistance.
Does this kind of touchscreen require you to press it with your fingers or will it respond to every material?
Brady, or some profs, please tell me - does this require very specific type of film to press upon, or when I squeeze ANY object - I make difference in the tunneling ratio?
Does it linked to increasing temperature or temperature raise under pressure is side effect of tunneling?
Please, people - rate this question up (or answer it :)). Forget about soccer and football
@joyork Don't feel bad about the thumbs! :)
But remember he is using a simple analogy to explain PART of the concept to a WIDE audience, some of whom will lack your knowledge of quantum mechanics (I am one of them!!!!)
If we could possibly move on from what a football 'is', what it isn't and, hell I can't resist, what, "is", is, well then I'd like to clear one thing up if I could. Are we then talking about a tremendous increase in sensitivity as the functional breakthrough here for these type devices and if so just how has this held the technology back up to this point? I understand we've entered a 3D interactive space and the very different options we are presented there, but what are immediate uses, changes?
I'm just wondering, in the video he talks about how the electrons and protons and what not don't have a fixed location and can be found across a region of space, and the probability of it appearing at said location lowers with the distance. What I'm wondering is if there's any point at which the electron appearing there will be zero. Like is there a chance, however small it may be, that these particles can literally appear in any location in the entire universe?
Interesting. One question though: did the theorization of quantum tunneling come about first or its application? How does such an esoteric field end up getting out of academia and being used int he industry?
+Vinay Seth In my opinion, modern physics is way beyond physical implementation. Theoretical physicists have advanced so much (yet there is so much left to learn...) from a theory point of view, that many of their discoveries aren't achievable from an industrial point of view. Engineers do have the task to take this theory and find applications in real life. This technology in particular seems to be the consequence of a creative (or several) mind that took a theoretical model and found a way to make it usable on a daily basis for all of us!! Brilliance!
+Ignacio Calderon Fascinating.
Ha! I remember Dr. Moriarty's tale about his kid commenting something about the pronunciation of" three" sounding like "tree" (In the Guinness video) and he does kind of the same with "thru" (sounding like "true") @2:03 .
does this mean although the electron is not supposed to move from one particle to another, it still will move around because of the probability?
ps: very stupid question, does it really move around or does it "magically" appears in a position?
I have a question: does the particle appear on the other side of the barrier or does it actually travel through it?
The physicist in this film uses touch-screen devices as mobile phones to explain the difficult subject of quantum-tunneling. The explanation is straightforward and may be understood by high school physics students (Physics 2) as well as undergraduate physics-engineering students. He explains how by touching the screen the finger applies a pressure to the screen and this minimal pressure may change the insulator of very large resistance to a good conductor. Watch it! You will enjoy it!
So it seems that the Sun is entirely dependant on quantum tunneling, but I was just wondering if there are starts hot/dense that don't depend on it? And how would that star differ on its outside when observing it?
4:12 It will not move them, they may stick to thumb and when they fall of the thumb there is probability that they may be all close or even further
Two questions:
1. Why are the nanoparticles moved together when one applies a force on them? I guess, the nanoparticles are not squeezed perpendicular to the force as Philip demonstrates at 4:10 but parallel to the force.
2. I probably have to learn more about the flow of electrons, but I can't see the connection between it and quantum tunneling. I mean, they flow because the nano particles are now close enough for the electrons to "jump" from one particle to the next, aren't they?
Can quantum tunnelling be used to explain how current can arc over 2 exposed end of a wire where the space between the wire is the barrier for the electron ?
Does quantum tunneling have anything to do with the wave function passing through a higher dimension to have a probability of being in a different place? Still trying to grasp the concept
Does this mean that if i have a block of enriched uranium sitting on the table, it is very possible that at one point, a fission reaction could occur
So the touchscreen combines classical mechanics (deformation of the touchscreen surface) with quantum mechanics (tunneling of the electrons)?
does that mean if you get plastic and put it under enough pressure it would share its electrons because of quantum tunneling and that therefor look like a metal?
If the electron has a probability of being in the obstacle and that obstacle is another fermion would this create a contradiction with the Pauli exclusion principle
Question: I thought that fusion was possible in the sun because of the gravity pull exerted by the sun which surpassed the repulsion of the hydrogen atoms and made them fuse. Is it gravity or quantum tunneling or when Professor Moriarty means protons in the sun it's just another quantum process?
does anyone have a link to (more of) this black and white footage of the suns surface, as seen at 2:22 ?
1:38 When he says the particle can be found within the barrier (ie energy barrier), doesn't that violate conservation of energy?
+George Kyriakou No. The barrier is still there and the particle is still there.