Quantum Tunnelling: When the Impossible Becomes Possible | Physics Explained for Beginners

[@nuadatt]

But E>U _is_ interesting: possible for reflection from barrier to happen! Not expected from classical physics.

[@ParthGChannel]

This is true! Good point :)

[@PrivateSi]

The way it !SHOULD! work 'classically' is electrons and positrons, the only true fundamental particles are an in-out vibrating globular field warp in the subspace field of close-packed +ve balls bound by -ve gas. The electron has 1 quantum (1 cell's worth) of extra -ve charge left over from a cell being kicked free (that became a positron).. The -ve gas flows from the centre to the outer edge and back as a wave, with cells being pulled in and out at C.. -- There are 6 (or more?) DC Mass Spin Loops of -ve gas and cells in a torus too.. A magnetic field is the same but with cells as vibrating AC cell blips in the direction of -ve gas flow... When a particle accelerated hard its energy field can momentarily massively weakens, and the 1 quantum of extra -ve gas at the electron core travels as a tiny ball of extra -ve gas. It's field reforms at C but the electron is going so fast it doesn't have time to establish a large coherent field until it leaves the field of the barrier electron.

[@vairoalexnder]

I wish that you can go deeper in the math of these equations

[@loriclark505]

it says for beginners

[@tarzanautowala6506]

Lori Clark-revelation of glory 😂 you’re a genius

[@guvenc77]

World is not ready for that yet 😬

[@Higgsinophysics]

I loved that you didn't jump into potential graphs straight away, but instead took Time to make everything crystal clear. Thank you for the shout out ❤️

[@ParthGChannel]

Making a video for your channel was great fun, and it ended up being a really nice one too :D loved everyone's contributions

[@PrettyMuchPhysics]

Great explanation for the energy-position plot, when you see it the first time, it can be quite confusing :p especially when one draws the wavefuncion in the same plot (like at 11:05), but you made sure to explain everything very detailed 👍

[@ParthGChannel]

Ahh thank you, yes I actually want to make a separate video discussing why such a plot is problematic :D

[@PrettyMuchPhysics]

@@ParthGChannel That would be great! :O

[@mustafizurrahman5699]

Hats off man.....I had gone through this tunnel during my undergraduate school but I couldn't get anything...ur lecture has made it very easy.

[@saraahmed632]

Hey Parth, I just recently discovered your videos and I just want to say that they are absolutely amazing and have helped me so much as a first year physics student. Your Quantum videos are so interesting and well explained.

[@theblackreaper4395]

Great video Parth! Lucid and quite easy to understand More importantly, could you make a video differentiating between Newtonian, Lagrangian and Hamiltonian mechanics. These are so interesting but I don't find any good explanations

[@ParthGChannel]

Thank you! Yeah I'll definitely add this to my list :)

[@kidzbop38isstraightfire92]

Yes, I have looked for this for awhile and can't find a good explanation either.

[@maxwellsequation4887]

"HAPPY NEW YEAR" ITS A JOKE NOW

[@fuzzylumpkin8030]

J P Yadav you got that sh!t right 🤪

[@akashsunil7464]

I swear

[@josephirizarry5332]

This is AMAZING!!!! They talk about this a lot in nanotechnology classes and I've always been so confused since they kind of brush over it😅 Thank you so very much!!!! It all makes so much more sense now!

[@ioannaathineos5269]

beautifully explained and also enjoyed the concert at the end 😂

[@exon901]

Wow.... thank you! I actually understood your explanation, despite the fact that I’m a retired Physiotherapist of 72. I have always had an interest in physics and it was such a thrill to be able to follow along with you.

[@exon901]

Crazy as it is, my son’s video about parallel worlds has just popped up above!

[@geenstagni1060]

Absolute banger video

[@siddarthaurobindo6473]

Enjoyed it. A qualitative graph to indicate the different waveforms from tunneling is a wonderful way to get the message across. Thanks!

[@ASITV]

bro, outstanding science vid! i faster got the clue with your explanation than with german toturials and im german and my englsih is quite poor, keep it up! "Weitermachen, alter!" greez from germany

[@irwanahmed001]

your voice is hella satisfying mate, amazing video

[@sarahb5022]

You explained this very well. I am currently doing an honours degree in physics and I approve :) Well done. Nailed it!

[@mohammadowais1627]

Beautifully summarized a rather tricky concept. Underrated channel.

[@solapowsj25]

Well presented😊

[@tatjanagobold2810]

It is really creepy that the mathematical model of a wave so accurately describes what particles like electrons do! Just crazy. Great video!

[@ParthGChannel]

Yeah the way I think about it is that humans invented the concept of "waves" and "particles" based on what we could observe in experiments. We saw that electrons behaved like particles and light behaved like a wave, just purely coincidentally based on experiments we did in the past. However we later discovered that electrons can also behave like waves and light like a particle. So we need to come up with a new model that describes the true behaviour of all of these bits of the universe, that incorporates both wave-like properties and particle-like properties. :)

[@kutbuddinrangwala1039]

u r doin a good job

[@smurug85]

This quantum tunneling effect is necessary for the sun to be a star. The sun produces heat and light by fusing atoms.

[@suparnaprasad8187]

YOU ARE JUST AMAZING PARTH!!!! WHAT A VIDEO!! SUCH A BEAUTIFUL CONCEPT EXPLAINED SO EASILY!! THIS IS REAL SCIENCE. I HAD TO PUT IT ALL IN CAPS BECAUSE THAT'S JUST HOW GOOD THIS VIDEO IS :) CAN'T WAIT FOR MORE!!!!!

[@Korgie_7]

brilliant, so easy to understand. I love the minimalism in the diagrams too, just makes it so clear!

[@shawonbiswas2040]

You r a brilliant story-teller man!!! Great video...👌👌👌

[@markgoretsky766]

Great crispy presentation! Thanks much, Parth.

[@davidzuilhof2272]

How to study smart in physics? I find it hard to find good material on it. Most of the study advice videos are not for understanding abstract ideas like the case is with physics, but with just memorisation or just like concepts. It would be really nice if you could make a video about that, although I know thats probably kinda hard to do. But ye that would be great!

[@jaredbourne4201]

I learned something about quantum tunneling well much more in dept

[@prakashsolanki2485]

you make complicated topic so easy to understand.thank you bro.

[@l.gagnon3846]

So good! Always a pleasure to watch you! Thank you!

[@jaivaidya7571]

Oh gooddddddd. A video after ages. Excited to watch it !

[@ParthGChannel]

Thanks for watching as always :D

[@jaivaidya7571]

@@ParthGChannel all thanks to u 🤓

[@nathangrant1824]

another fine explanation. thank you.

[@PrivateSi]

The way it works is electrons and positrons, the only true fundamental particles are an in-out vibrating globular field warp in the subspace field of close-packed +ve balls bound by -ve gas. The electron has 1 quantum (1 cell's worth) of extra -ve charge left over from a cell being kicked free (that became a positron).. The -ve gas flows from the centre to the outer edge and back as a wave, with cells being pulled in and out at C.. -- There are 6 (or more?) DC Mass Spin Loops of -ve gas and cells in a torus too.. A magnetic field is the same but with cells as vibrating AC cell blips in the direction of -ve gas flow... When a particle accelerated hard its energy field can momentarily massively weakens, and the 1 quantum of extra -ve gas at the electron core travels as a tiny ball of extra -ve gas. It's field reforms at C but the electron is going so fast it doesn't have time to establish a large coherent field until it leaves the field of the barrier electron.

[@kianshah8048]

Roses are red Violets are blue Rhyming is hard You need more subscribers

[@akhileshlaghate982]

I learner a lot on quantum , A video on explaining quantum state will be very useful.

[@thecynicaloptimist1884]

Barrier: "You shall not pass!" Electron: *takes out shovel* Barrier: "Wait, that's illegal"

[@wastatariq1182]

You are genius , best of luck

[@akahassan2527]

Parth G you are great! The explanation is great! Please don’t stop! 😇

[@ParthGChannel]

Thank you! :)

[@Emily-fm7pt]

Keep doing what you're doing! You're content is a great way for me to get my not-so-sciencey friends to understand at least surface level higher level physics (kinda an oxymoron but it's ok..)

[@jamesmark8679]

Make a video on solving the schrodinger equations please

[@serenadezz]

your videos are so awesome to watch. i hope you get many more subs

[@learneverything9271]

Explain better than university indeed

[@Engiction]

Great video man, very good explanation

[@Dismythed]

My theory is that a particle, under certain conditions, can transfer its charge to its momentum, causing it to collapse the wave function temporarily, and therefore eliminating the barrier. Because the particle expended energy in this way, it now exists in the lower energy state. Its charge is depleted. This is because the electron is made of even smaller particles that are truly fundamental and are responsible for mass, charge and spin. When they align in a specific way, some are discharged from the electron's shell, generating momentum. The electron then redistributes its remaining particles to return to equilibrium. We do not register those smaller particles because when they fly away in a straight line, they are superluminal. It is only when their path curves, generating curved spacetime, they slow to 1/5th and give their energy to momentum by the flywheel effect which in turn lightens the mass. The mass energy is the number of particles inside. The charge is the potential for that energy to be released. The spin is based on the grouping of particles into two (spin 1 in bosons) or three (spin 1/2 in fermions) groups in orbit around each other. For those not in the know, that's primarily classical, not quantum mechanics, because classical looks for causes in physical bodies, not fuzzy collections of wave functions. What proves particles real is that they are subject to the wave function only as long as the wave function is active. It is only active as long as the particle remains subject to the cosmological constant. (Which is a whole other subject in itself.)

[@nobisphysics7651]

Hey Please discuss this question-"The wall of death fairground ride: it's spinning in a horizontal circle. Then the floor that people are standing on falls away. Calculate how fast it has to spin before the floor can fall away without the people dropping out given that : coefficient of friction=m and radius of the thing=r. Or please reply me in detail. I know it's not of your level but...

[@nsq2487]

Easy omega=sqrt(rg/m)

[@rubenanthonymartinez7034]

This phenomena is one of a few quantum principles that will inhibit a black hole from being created. The Schwarzschild singularity does not appear for the reason that matter cannot be concentrated arbitrarily because of quantum tunneling.

[@smurug85]

Yay!!!!!Parth is here!!!!Physics!!!!

[@dannywearsthecrown567]

Awwww shut dude I suck at this type of stuff especially the math but I kinda understood you! The diagrams help me more, I like the practical demonstration more than the mathematical expression so thank you!

[@zealshah9]

If we are looking in the past when we see the light from distant stars, and it shows that galaxies are drifting away, then isn't it in the past that galaxies are moving away from us and the expansion of universe taking place?

[@theartofmusic05]

11:48 bro continue singing I like ur voice ur a good singer and physicst too

[@marcusrosales3344]

Classical E&M displays a phenomenon akin to tunneling. It has to do with light propagating through layers of media with alternating layers the same index of refraction. I don't want to explain in detail but wanted to point out tunneling can be thought of as a wave like phenomena, not a particle like one.

[@v0idm1nds75]

Ur Most awaited video🤓

[@dr.praveenrajpurohit8612]

lol... he once said HAPPY NEW YEAR

[@jamesreid6616]

If I were to tell you that the speed of light has been decreasing at 1% per ever 10^6 years since the big bag, could I be proved wrong? And if E=mc^2 is valid and as C approaches zero does that mean E does too? Or does m become proportionally large? Just wondering?

[@Villaboy78]

dig into this a little deeper for us - see where it goes? Say the SoL is decreasing then what else is changing? are other universal constants or ratios changing? are they evolving in the same way? in which case would we be able to even tell the difference between the SoL then and now ?

[@venujohn988]

Great videos keep going on 👏

[@tammyfifer5059]

Great ✨✨

[@shankarsk4413]

Thank you very much sir

[@susanjacob937]

You are amazing !!!!!!

[@72saurabhsen73]

Thanks man👍

[@vp3314]

Great stuff as usual! Thanks! And happy new year to you too! Regarding the new decade - it will start in 2021 :)

[@deepgupta1465]

Great video. Easy to understand :)

[@ParthGChannel]

Thanks for watching!

[@roxc893]

please do sing on cam makes the video so much better haha

[@d.tghenaabbas8424]

that was really cool ! , thanks

[@YorranKlees]

That's how the sun is emitting light, as far as I have been taught: pressure, temperature, energy are not enough alone to cause fusion, which implies 2 things : - that's why thankfully fusion inside the sun is very ineffective, thus giving it billions of years life - wave function is not only a mathematical representation, but somehow a real matter thing. Well can we still call it matter at this stage ? That leads my mind to QFT. Am I the only one who came to this thought ? Anyone feel free to correct my reasoning and line of thoughts, I am no physicist, just passionately curious about a world richer than what it looks like.

[@001Reegan]

well done

[@swagatamtah4570]

Sir please make a video on how to learn perfectly Quantum mechanics himself in undergraduate standard.

[@swadeshmohanty7964]

You are amazing!

[@ishaanmanhar7392]

release a full course dude on First year Quantum Mechanics.

[@shivimish9962]

Hi Parth please please include the intro music you had before in your videos. Just a cherry on top :)

[@rer9287]

People should not assume the point particle model of an electron is anything other than the statistical center of an electron or subatomic construct. If you dispose of this bad assumption, you can model this classically without appealing to the magical thinking of QM.

[@brownmor610]

You are the best thank you

[@suktitiwari5683]

When the electron is provided with an energy it should move to the other side of the barrier easily. How does the exponential decay occur?

[@theprofessor5127]

So, it doesn't matter how much resistance(magnitude wise) the potential barrier offers, unless it has a wider barrier, the electrons can penetrate through it?

[@RigoVids]

So this can provide free energy, no? Can’t you take advantage of the energy of the second electron being outside the first electron, and extract energy every time it’s on the outside and falls back inside?

[@TruthWillSF]

actually there is neither destruction of the potential barrier nor tunneling,but electron behaves like a wave and disappears near barrier and appears other side

[@traxinox7474]

please make the next maxwell video! your last two were so great!

[@swapnildadamode662]

Well explained,😀

[@polarjsapkota2484]

You need to turn the volume up a notch there Parth. Can't hear you properly even in max volume.

[@shashwatgoswami223]

Dear Parth, in STM, if we were to vary the magnitude of the potential barrier, would it also affect the energy/wavelength of the electrons that tunnel through the barrier, and in the way affecting the resolution of the images? Your videos are amazing, mate.

[@oriolpm_6]

So graphically, if the wave function overcomes x=0 and gets into v=u line, the decay will be evanescent as well? Also, can wave function shifting affect this phenomena? Thanks.

[@xxxxxx-ef3lj]

Thank you for your great explanation. In the Schrodinger equation, is V the potential energy of the region around the electron or is it the potential energy of the electron itself? My textbook, in my understanding, says V is the potential of the electron, whereas E is its total energy (sum of potential and kinetic energies). If this is the case, how can potential energy be greater than total energy?

[@schmetterling4477]

V is the potential of a field. That field is a classical approximation that does, in reality, not exist. If you wanted to understand the microscopic mechanism for tunneling, then you would have to quantize the field as well and then you could treat this scattering problem with perturbation theory and you would see that "the particle" does not move in a potential but it scatters in a sea of other particles. It would still be the wrong explanation, but at least you would think that you understood what is going on.

[@danielmatos2636]

Thnks bro...ur the best!!

[@gyro5d]

Electrons are coiled Aether fields, not particles. A straight wire, into a coiled wire. Parallel magnetic fields, into Unparallel magnetic fields. Compressing into each other, charge. J.J. Thompson, the discoverer of the Electron, said the electron wasn't a particle. Until he was offered a Nobel Prize. Tunneling dropping its magnetic transverse wave, leaving only its Dielectric energy. That doesn't create Tesla nodes, as transverse waves, no EM waves perturbations. Dielectric energy is longitudinal perturbations along the Inertial plane/Counterspace.

[@jayfordbersamin6042]

thank you!!

[@praveenb9048]

Can an electron tunnel through a single-atom sheet of graphene that carries a certain negative charge that would classically send the electron back towards the source? How about a large ion? A charged molecule?

[@fuzzylumpkin8030]

My take away is that 0 probability does not exists it may be unlikely particles could tunnel across the universe but not impossible given enough time

[@augijyotbali2131]

Wow parth sir , you're amazing , but I'd like to know why is there unequal probability of finding electron in particular place and what makes certain places have more probability than the other ones?

[@aryanbhattacharjee1692]

do calculus videos, you are just too good at explaining things

[@maheswaripalanivel9031]

Can you explain quantum confinement effect?

[@schmetterling4477]

Explain in what way? Confinement does not have a classical analog. It's unique to quantum fields.

[@Bharathkumar-od9je]

please do a video on , how accelerating charges produce electromagnetic waves ? what is difference blw a moving charge and an acceleraring charge ? i saw one video explaining that moving charges only create magnetic fields , but net electric field is 0 . please explain this ..

[@marley229bidabir9]

Omg thank you so much,!!!

[@frosty8655]

Is energy and potential same ?

[@danipent3550]

04:34 Why did the electron cross the road? To get to the other side

[@TheTwick]

Happy New Year, dude. I seem to remember that QT has something to do with transistors at very small size (< 5nm). The electrons may tunnel through the base when scale gets below a certain size. Do I have this right?

[@peterkyeremeh7053]

Good explanation so far. How would you explain tunneling in quantum field theory. Again, I want you to explain resonant tunneling

[@schmetterling4477]

Quantum field theory does not have potentials like this. You would have to build the potential barrier with a QFT model, first, and now you are talking about serious math.

[@shreeshasandur5120]

So if the value of 'a' is small enough then the probability of electron tunneling is higher?

[@ce_wono]

"I'm gonna be shameless about it - sorry about that" 😅

[@hemantj675]

Can you please explain kronig penny model of band theory of solids. We appreciate your help to explain complicated concepts .keep it up bro

[@EliYahu24]

2hat is the schrodinger's equation on 3 regions? Not wave functions

[@v.a.thomas1833]

Hey parth I am a high school student .I want to know how u got admitted to Cambridge.Pls make a video on it too.Waiting for it.

[@KunalSingh-my5nd]

If we perform an experiment, then can we find the particle inside the barrier , i.e. in region 2.? Please clarify.