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De Broglie wavelength | Physics | Khan Academy

In this video, David explains how Louis De Broglie got his Nobel Prize for the idea of matter having a wavelength.
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Пікірлер: 280

  • @ankitaaarya
    @ankitaaarya4 жыл бұрын

    "Luey deBroy" Gotchya!

  • @abdullahumuthamzaogullar3315

    @abdullahumuthamzaogullar3315

    3 жыл бұрын

    they're bots, dont fall for those.i

  • @colinsilver1041
    @colinsilver10415 жыл бұрын

    Just an awesome video. I read the textbooks, I understand the books, but I just didn't get the big deal until this explanation. Thank you!

  • @pehu3798

    @pehu3798

    2 жыл бұрын

    ❣️

  • @secretgaming8743

    @secretgaming8743

    2 жыл бұрын

    Right

  • @tanmaygarg_9025
    @tanmaygarg_90257 жыл бұрын

    after searching thousands​ of websites and seeing hundreds of videos this video was one the cleared every little thought in my mind. HATS OFF to you. you are terrific!!!!!❤❤

  • @Akashdeep-kd5mf

    @Akashdeep-kd5mf

    5 жыл бұрын

    Lol

  • @pachaiappanpachaiyappan869

    @pachaiappanpachaiyappan869

    5 жыл бұрын

    I love u

  • @pachaiappanpachaiyappan869

    @pachaiappanpachaiyappan869

    5 жыл бұрын

    I hate u

  • @pachaiappanpachaiyappan869

    @pachaiappanpachaiyappan869

    5 жыл бұрын

    Gvj

  • @sjlegends

    @sjlegends

    4 жыл бұрын

    Cleared? lol 😂

  • @astro.5oh
    @astro.5oh4 жыл бұрын

    This is absolutely amazing. Physics has always interested me but is not my best subject. I came here because my Modern Physics professor suggested this video. I see why he did so--this video does not only make this concept extremely easy to understand, it made it interesting. I wish all my professors could make difficult topics such as Modern Physics and Quantum Mechanics so enjoyable. Thank you!

  • @aishwaryajangir2909
    @aishwaryajangir29095 жыл бұрын

    That's the explanation I wanted to know! Thanks a ton for not only spreading knowledge but spreading it in explicit manner. PS - This is the top channel for us(students) to learn :))

  • @sanchisingh5117
    @sanchisingh51174 жыл бұрын

    this is one the best videos that explains this concept so beautifully WOW

  • @nymphaea888
    @nymphaea8888 ай бұрын

    This was the most well explained resource of the De Broglie wavelength that I’ve come across. Thank you!

  • @VG__
    @VG__2 жыл бұрын

    You won't even realise how many more major concepts of physics he has explained just in 10min of video that would actually take you 10years to comprehend =D Simply aesthetic 🌺🌺

  • @jessereiner5401
    @jessereiner54014 жыл бұрын

    Excellent job framing an important idea that's hard to get a foothold on! How about making another one on the Davisson-Germer experiment itself?

  • @suipheng1322
    @suipheng13224 жыл бұрын

    Wow, you explained it so well, I think its the best explanation video regarding this topic on KZread.

  • @AfsanaKhan-hm8zr
    @AfsanaKhan-hm8zr2 жыл бұрын

    Really found your channel with the best explanation…hope you upload more related videos

  • @thenaughty5441
    @thenaughty54415 жыл бұрын

    man! i'm in love with you ! thankyou so much

  • @albijos2684
    @albijos26842 жыл бұрын

    just great ! this piece is a real gem.

  • @manjulapriyadarshani8291
    @manjulapriyadarshani82914 жыл бұрын

    Thanks . I was able to learn clearly with this video .

  • @aminsa9392
    @aminsa9392 Жыл бұрын

    Amazing video you made. I was not understanding this case but your video made it more easy for me to understand. Thank you

  • @meghnameghna1498
    @meghnameghna14983 жыл бұрын

    Thank you so much for such a elaborated and good explanation

  • @GlynWilliams1950
    @GlynWilliams19507 жыл бұрын

    Wow. Amazing and great explanation.

  • @mahdibakkar7446
    @mahdibakkar74464 жыл бұрын

    De Beoglie's new discovery had a big importance . It is the pillar of the Heisenberg Uncertainty principle

  • @utahimeiori8739

    @utahimeiori8739

    3 жыл бұрын

    The heinz what 🤠

  • @nmarbletoe8210

    @nmarbletoe8210

    2 жыл бұрын

    @@utahimeiori8739 uncertainty in mustard x uncertainty in ketchup = relish

  • @PhilMoskowitz

    @PhilMoskowitz

    10 ай бұрын

    By way of Schrodinger's equation. Also, if it were only Schrodinger's equation, I don't Heisenberg would have developed the Uncertainty Principle. He would have just called Schrodinger's equation- bad math. It was only through seeing this same uncertainty in Heisenberg's Matrix Mechanics (a rival and equivalent theory to Schrodinger's) that led Heisenberg to develop The Uncertainty Principle.

  • @paulg444
    @paulg4445 жыл бұрын

    David, this is a fantastic presentation.

  • @internationalremixes6440
    @internationalremixes64406 жыл бұрын

    fabulous video...it's like crystal clear

  • @papangkonninarundech2562
    @papangkonninarundech25624 жыл бұрын

    It's been three years and i'm still pronoucing the guy's name Broglie.

  • @WeAreShowboat

    @WeAreShowboat

    4 жыл бұрын

    Me too, and I made this video :)

  • @hadmeinthefirsthalfngl2717

    @hadmeinthefirsthalfngl2717

    3 жыл бұрын

    @@WeAreShowboat Really?

  • @WeAreShowboat

    @WeAreShowboat

    3 жыл бұрын

    @@hadmeinthefirsthalfngl2717 💯

  • @pranjalkohli183

    @pranjalkohli183

    3 жыл бұрын

    Ya

  • @Scarabola

    @Scarabola

    3 жыл бұрын

    but it always is pronounced Broglie. depending on how you pronounce the name "Broglie".

  • @zhraisjoy
    @zhraisjoy Жыл бұрын

    Really great U make the idea very easy to understand I can't know how much I can thank you

  • @bhavanikasiviswanathan3707
    @bhavanikasiviswanathan37074 жыл бұрын

    It is very useful. Thank you!

  • @hasansaleem4983
    @hasansaleem49833 жыл бұрын

    2:15. Because of you now I have to cramm some questions and answers!!

  • @AM-es7of
    @AM-es7of5 ай бұрын

    Beautiful lesson. Thank you!!!!!!

  • @fstopPhotography
    @fstopPhotography2 жыл бұрын

    That was fascinating. Thank you.

  • @avezl
    @avezl Жыл бұрын

    Thank you so much, finally i could understand it

  • @tiagotassinari1435
    @tiagotassinari14352 жыл бұрын

    Awesome video !!! Thank you!

  • @hasansaleem4983
    @hasansaleem49833 жыл бұрын

    Thankyou I finally understood it

  • @swapanmanjhi
    @swapanmanjhi2 жыл бұрын

    Great Explaination sir, Thanku 💐

  • @hamidthephysicist6376
    @hamidthephysicist63765 жыл бұрын

    Thank you very much . The weird thing is I was so happy watching the video ! I lived the video second by second .. I think I should specialize in Quantum Physics .

  • @NimrodTargaryen
    @NimrodTargaryen10 ай бұрын

    Wonderful commentary, thank you🎉❤

  • @dabanfarad8756
    @dabanfarad87567 жыл бұрын

    Great video thanks

  • @vijgenboom2843
    @vijgenboom28432 жыл бұрын

    Excellent! Thank you. ❤️❤️

  • @lilitek8001
    @lilitek8001 Жыл бұрын

    This explanation was amazing. Thanks

  • @qurrotatechnology2073
    @qurrotatechnology20733 жыл бұрын

    The explanation is just amazing

  • @Chris-wh3yz
    @Chris-wh3yz5 жыл бұрын

    Yuri Ivannov’s revolutionary discovery concerning standing waves and a new concept that fully explains gravity, probably in its truest most complete theorem, and not the past goody explanations and work around in science that has never truly captured what mechanisms by which gravity works. It’s really more basic than they thought.

  • @afzalhakim4681
    @afzalhakim46813 жыл бұрын

    Understood every part of it !!

  • @JahidulIslam-hu9eu
    @JahidulIslam-hu9eu5 ай бұрын

    Thanks for this explanation.

  • @ayushsharma0324
    @ayushsharma03245 жыл бұрын

    truly, thank you.

  • @haseeb6053
    @haseeb60535 жыл бұрын

    Thank you! Really, Thank you!!

  • @thenuyogi5751
    @thenuyogi57515 жыл бұрын

    THANK YOU!

  • @dodoahmed3121
    @dodoahmed31213 жыл бұрын

    Awesome video thank you sooo much

  • @c260sadiaafrin2
    @c260sadiaafrin23 жыл бұрын

    This video is great!!!

  • @RichardDLewis41
    @RichardDLewis415 жыл бұрын

    This video highlights the important point about the quantum nature of light and wave particle duality. There is a somewhat different way of explaining the physical nature of light and the photoelectric effect by following the Spacetime Wave theory. In the Spacetime Wave theory, light is described as a real physical wave disturbance of spacetime moving through space. This is like a gravitational wave but at a higher frequency. In the Spacetime Wave theory light exists in discrete quanta of energy because of the way that light is emitted by a change in energy level of an atomic electron. Light waves are not inherently quantised but are quantised due to the way they are emitted. So we abandon the concept of wave / particle duality and instead consider the photon to always be a wave quantum. In the experiment to demonstrate the photoelectric effect the wave quantum is the perfect description because the wave part describes the energy (E=hf) in each quantum. The Spacetime Wave theory goes further by describing electrons, protons and neutrons as looped wave disturbances of spacetime in spacetime travelling at speed c in the loop. This provides a similar model to the de Broglie model where there must be an integer number of wavelengths in the loop and this provides the correct results for the emission of a wave quantum (photon) when an electron changes energy level. The advantage of the Spacetime Wave theory is that it provides a deeper understanding of the real physical processes taking place when looped waves in spacetime change state. For more detail see: www.academia.edu/5927513/The_Spacetime_Wave_Theory www.academia.edu/5038836/The_Unification_of_Physics Richard

  • @ajtepal8596
    @ajtepal85966 жыл бұрын

    Thanks a lot.

  • @srinivasankv2964
    @srinivasankv29642 жыл бұрын

    Tomorrow is my final exams and now i am confident , thanks to your channel.

  • @PhilMoskowitz
    @PhilMoskowitz10 ай бұрын

    No one initially performed an experiment to test De Broglie's hypothesis. Instead there was an experiment that had unexpected results. De Broglie's paper was used as the explanation for those unexpected results.

  • @thunder_0997
    @thunder_09976 жыл бұрын

    Good explanation bro!!

  • @tejalguttal7807
    @tejalguttal78076 жыл бұрын

    awesome thanks

  • @user-rm2ir5cg3v
    @user-rm2ir5cg3v5 жыл бұрын

    really helpful

  • @iz1139
    @iz11395 жыл бұрын

    Thank you.

  • @alimustafa2682
    @alimustafa26827 жыл бұрын

    awesome !

  • @sakinahdil6060
    @sakinahdil6060 Жыл бұрын

    okay so this is basically the first video which made me understand the De Broglie Wavelength. I didn't even know that it was about electrons working as waves

  • @adityapendyala1413
    @adityapendyala14135 жыл бұрын

    Best class ever.....doesn’t even sound like a class!!!!!

  • @AhmedNazir
    @AhmedNazir6 жыл бұрын

    Awesome Video

  • @beyourself8085
    @beyourself8085 Жыл бұрын

    Thanks sir!!

  • @salad3806
    @salad38063 жыл бұрын

    fascinating!

  • @soul5626
    @soul56265 жыл бұрын

    Thank you

  • @ZwiffleOwnsU
    @ZwiffleOwnsU Жыл бұрын

    Incredible explanation

  • @keshanisakunthala8600
    @keshanisakunthala8600 Жыл бұрын

    Thank you so much

  • @thyagabandara1453
    @thyagabandara14535 жыл бұрын

    Your videos are awesome.

  • @vineetasharma3722
    @vineetasharma37225 жыл бұрын

    When is your birthday David? We are celebrating teacher's day 2.0 on the day your birthday falls. Period.

  • @keywordmcat2256
    @keywordmcat22566 жыл бұрын

    best physics teacher ever...down with this expensive and inefficient u.s. university system..

  • @abdurrafay6150
    @abdurrafay6150 Жыл бұрын

    This guy is hands down the best physics teacher

  • @rafak2612
    @rafak26125 жыл бұрын

    Thanks bro

  • @nurulshamchannel9307
    @nurulshamchannel93072 жыл бұрын

    Thank you sir

  • @smakshsharma
    @smakshsharma2 жыл бұрын

    That was cool 😃🔥

  • @jayjain1033
    @jayjain10332 жыл бұрын

    yow this guy can explain stuff!!

  • @gautomdeka581
    @gautomdeka5813 жыл бұрын

    That's great what debroglie found , he didn't get the formula for matter using mathematics, he just predicted that might be true as it is valid for light

  • @priyank5161
    @priyank51612 ай бұрын

    2:43 heres come my boy... None other than... LUI DE BROY

  • @aritrabhattacharyya2374
    @aritrabhattacharyya23743 ай бұрын

    Awesome class sir

  • @martinwood744
    @martinwood7443 жыл бұрын

    Quite good

  • @MitzvosGolem1
    @MitzvosGolem16 жыл бұрын

    excellent

  • @asadchoudhry6802
    @asadchoudhry68026 ай бұрын

    This channel is a huge disservice to physics and the next generation

  • @marisac6929
    @marisac69294 жыл бұрын

    Nice explanation

  • @kokomokid4006
    @kokomokid40062 жыл бұрын

    I had no idea wtf he was talking about...but i shur enjoyed it!!!

  • @Said-kv7mp
    @Said-kv7mp4 ай бұрын

    brillant👍

  • @funnyvideos-yc8mz
    @funnyvideos-yc8mz5 жыл бұрын

    very good

  • @dhanussh10music
    @dhanussh10music6 жыл бұрын

    nice one

  • @imafan5515
    @imafan55152 жыл бұрын

    david's voice is so smooth.

  • @MrSchlangenfurz
    @MrSchlangenfurz4 жыл бұрын

    Probs! best video!

  • @ashishfargade1393
    @ashishfargade13936 жыл бұрын

    9 dislikes,,,, i mean why would people give it,, this video cleared every doubt in my mind,,, what more do these people want,,, why would they dislike it without any reason, they are cruel af!

  • @haroldbog9137
    @haroldbog9137 Жыл бұрын

    Damn. He teaches soo well, not even tryin to sound like a cringe comment, but each of his lectures is so good.

  • @mehrishmalik3883
    @mehrishmalik38835 жыл бұрын

    I love this channel and their website as well.... Plz make a video on Davison and Germer Experiment.... I have my finals with in five days ..... Please help me I love PHYSICS and wanna get my application accepted in an engineering university....

  • @CACBCCCU
    @CACBCCCU Жыл бұрын

    My apologies in advance if you enjoy spookiness. Dipoles interfere, massless or not. A dipole does not interfere with itself. Dipoles tend to be overlooked when they pair up 180 degrees out of phase with each other, with consequent signal drop out. Photons are extended polarized electromagnetic dipoles. Polarizers are re-polarizers. Opposing helicities of polarization can be induced by a linear polarizer. Electrons are magnetic dipoles due to their spin. Their spin is both quantized and tied to their speed. As matter dipoles they like to pair up 180 degrees out of phase. Ions are electric dipoles and spinning ions are magnetic dipoles, their spinning involves contact with surroundings and can be synchronized.

  • @effortlessschool
    @effortlessschool6 жыл бұрын

    awesome

  • @shivensaini3643
    @shivensaini36432 жыл бұрын

    Nice explanation, BTW We can also derive this expression from equating energy from 1. E=hf(Wave nature) 2. E=mc^2(Particle Nature)

  • @darkzonegaming9169

    @darkzonegaming9169

    2 жыл бұрын

    but how

  • @shivensaini3643

    @shivensaini3643

    2 жыл бұрын

    @@darkzonegaming9169 write C as Velocity, f -> c/Lambda

  • @darkzonegaming9169

    @darkzonegaming9169

    2 жыл бұрын

    @@shivensaini3643 thanks mate

  • @ItachiUchiha-xy9gi
    @ItachiUchiha-xy9gi2 жыл бұрын

    Again i am saying the same thing you are awesome 😎

  • @noemotions4251
    @noemotions42514 жыл бұрын

    Sir kindly help me. I won't lecture on mie-gruneisen equation.

  • @hemanthharshith3154
    @hemanthharshith31543 жыл бұрын

    Nothing to say just tq🙏

  • @nocturnalpirateoftitan5923
    @nocturnalpirateoftitan59233 жыл бұрын

    Nice

  • @user-sy4ru1wl9i
    @user-sy4ru1wl9i3 жыл бұрын

    I would like to see his paper. But will i understand it or even if i don't where do i get it?

  • @randallmcgrath9345
    @randallmcgrath93452 ай бұрын

    Khan Academy is also nice for math practice as many know.

  • @tomnoyb8301
    @tomnoyb83015 жыл бұрын

    Quantization always arises from boundary conditions. It's not a "particle nature" of light quantizing the photoelectric effect, rather the boundary conditions upon the electron that prevent it from accepting low energy waves. Light is always a wave and may always be calculated as a wave. Particle models are always simplifications of the more accurate wave calculation. "Wave" is always correct, "particle" might sometimes be correct.

  • @aaroncurtis8545

    @aaroncurtis8545

    4 жыл бұрын

    But... We hypothesized the photoelectric because treating light as a wave doesn't work; it leads to the ultraviolet catastrophe, even without electrons getting involved.

  • @jmac6653
    @jmac6653 Жыл бұрын

    I feel both 100x smarter and 100x more dumb from this video. Thank you.

  • @michaelgonzalez9058
    @michaelgonzalez9058 Жыл бұрын

    In back of the center light focus is the unknown

  • @hedayatnoori6456
    @hedayatnoori64566 жыл бұрын

    Finally I could understand this.... Thanks 💯

  • @TheLivirus
    @TheLivirus3 жыл бұрын

    So the particle nature of light was shown by light knocking away electrons in metals, but then electrons were shown to also be waves. It seems to follow naturally that one would then try to explain the photoelectric effect by considering both light and electrons as a wave. I'm sure someone tried this, but does anyone know what was the conclusion? Does the photoelectric effect not work considering both light and electrons as waves? Why?

  • @talhaansari3140
    @talhaansari31406 жыл бұрын

    Anyone know this software which is in this video for writing please i wanna know please

  • @MsQuikly

    @MsQuikly

    6 жыл бұрын

    it's been 10 months, but it's called smoothdraw

  • @_Thoughtful_Aquarius_

    @_Thoughtful_Aquarius_

    5 жыл бұрын

    @@MsQuikly , thank you very much. ☺️

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