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
"Luey deBroy" Gotchya!
@abdullahumuthamzaogullar3315
3 жыл бұрын
they're bots, dont fall for those.i
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
2 жыл бұрын
❣️
@secretgaming8743
2 жыл бұрын
Right
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
5 жыл бұрын
Lol
@pachaiappanpachaiyappan869
5 жыл бұрын
I love u
@pachaiappanpachaiyappan869
5 жыл бұрын
I hate u
@pachaiappanpachaiyappan869
5 жыл бұрын
Gvj
@sjlegends
4 жыл бұрын
Cleared? lol 😂
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!
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 :))
this is one the best videos that explains this concept so beautifully WOW
This was the most well explained resource of the De Broglie wavelength that I’ve come across. Thank you!
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 🌺🌺
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?
Wow, you explained it so well, I think its the best explanation video regarding this topic on KZread.
Really found your channel with the best explanation…hope you upload more related videos
man! i'm in love with you ! thankyou so much
just great ! this piece is a real gem.
Thanks . I was able to learn clearly with this video .
Amazing video you made. I was not understanding this case but your video made it more easy for me to understand. Thank you
Thank you so much for such a elaborated and good explanation
Wow. Amazing and great explanation.
De Beoglie's new discovery had a big importance . It is the pillar of the Heisenberg Uncertainty principle
@utahimeiori8739
3 жыл бұрын
The heinz what 🤠
@nmarbletoe8210
2 жыл бұрын
@@utahimeiori8739 uncertainty in mustard x uncertainty in ketchup = relish
@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.
David, this is a fantastic presentation.
fabulous video...it's like crystal clear
It's been three years and i'm still pronoucing the guy's name Broglie.
@WeAreShowboat
4 жыл бұрын
Me too, and I made this video :)
@hadmeinthefirsthalfngl2717
3 жыл бұрын
@@WeAreShowboat Really?
@WeAreShowboat
3 жыл бұрын
@@hadmeinthefirsthalfngl2717 💯
@pranjalkohli183
3 жыл бұрын
Ya
@Scarabola
3 жыл бұрын
but it always is pronounced Broglie. depending on how you pronounce the name "Broglie".
Really great U make the idea very easy to understand I can't know how much I can thank you
It is very useful. Thank you!
2:15. Because of you now I have to cramm some questions and answers!!
Beautiful lesson. Thank you!!!!!!
That was fascinating. Thank you.
Thank you so much, finally i could understand it
Awesome video !!! Thank you!
Thankyou I finally understood it
Great Explaination sir, Thanku 💐
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 .
Wonderful commentary, thank you🎉❤
Great video thanks
Excellent! Thank you. ❤️❤️
This explanation was amazing. Thanks
The explanation is just amazing
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.
Understood every part of it !!
Thanks for this explanation.
truly, thank you.
Thank you! Really, Thank you!!
THANK YOU!
Awesome video thank you sooo much
This video is great!!!
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
Thanks a lot.
Tomorrow is my final exams and now i am confident , thanks to your channel.
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.
Good explanation bro!!
awesome thanks
really helpful
Thank you.
awesome !
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
Best class ever.....doesn’t even sound like a class!!!!!
Awesome Video
Thanks sir!!
fascinating!
Thank you
Incredible explanation
Thank you so much
Your videos are awesome.
When is your birthday David? We are celebrating teacher's day 2.0 on the day your birthday falls. Period.
best physics teacher ever...down with this expensive and inefficient u.s. university system..
This guy is hands down the best physics teacher
Thanks bro
Thank you sir
That was cool 😃🔥
yow this guy can explain stuff!!
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
2:43 heres come my boy... None other than... LUI DE BROY
Awesome class sir
Quite good
excellent
This channel is a huge disservice to physics and the next generation
Nice explanation
I had no idea wtf he was talking about...but i shur enjoyed it!!!
brillant👍
very good
nice one
david's voice is so smooth.
Probs! best video!
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!
Damn. He teaches soo well, not even tryin to sound like a cringe comment, but each of his lectures is so good.
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....
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.
awesome
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
2 жыл бұрын
but how
@shivensaini3643
2 жыл бұрын
@@darkzonegaming9169 write C as Velocity, f -> c/Lambda
@darkzonegaming9169
2 жыл бұрын
@@shivensaini3643 thanks mate
Again i am saying the same thing you are awesome 😎
Sir kindly help me. I won't lecture on mie-gruneisen equation.
Nothing to say just tq🙏
Nice
I would like to see his paper. But will i understand it or even if i don't where do i get it?
Khan Academy is also nice for math practice as many know.
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
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.
I feel both 100x smarter and 100x more dumb from this video. Thank you.
In back of the center light focus is the unknown
Finally I could understand this.... Thanks 💯
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?
Anyone know this software which is in this video for writing please i wanna know please
@MsQuikly
6 жыл бұрын
it's been 10 months, but it's called smoothdraw
@_Thoughtful_Aquarius_
5 жыл бұрын
@@MsQuikly , thank you very much. ☺️