Thank you so much for you excellent explanations and teaching! I enjoyed this video along with many others. You have helped to make my modern physics class easier! God bless! -Andrew
Wow, it was an outstanding video. It has cleared all my doubts. I have been watching many lectures since morning on youtube and now, I have got a perfect one.
i wish you can make further explanation bout XRD; phase identification, xrd patterns, diffractometer etc. i like how you explain it repeatedly. you such a good lecturer! awesome
I have a naive questions that I hope you can help me with. For waves 1 and 2 in the Bragg diffraction diagram, how can they interfere if they are not even reaching the same position in space? 2. Why do we only consider
I like this guy! You can build your own x ray machine. Build a Tesla coil from a kit and hook it up to the cathode of a dental x ray tube. Under a photographer's red light, cut a piece of film and hold a chicken leg in between the paper and tube for 20 minutes. You will get an x ray showing the bones.
thanks i have an doubt that you told that d is equal to the wavelenght of the x ray so in bragg equation wavelenght cancels out the d and we will get only n= sin of angle
Some molecules are not bonded in a crystal orientation or bonded differently like ionic bonding covalent, etc. Does X-ray crystallography have limits on the types of molecules or compounds it can determine? You should have mentioned briefly its limitations like you mentioned its uses.
Huu Tiainen its because the ray first covers distance dsintheta to reach to the atom in the lower surface then it is reflected and again covers a distance dsintheta to reach to the upper surface/boundary.since
The x-ray has to travel from the surface of the material to the atom below the surface, which is a distance dsin(theta1), it is then reflected back to the surface covering a distance dsin(theta2). As the angle of incidence is equal to the angle of reflection both distances are equal and then the sum of the both and is 2dsin(theta).
Great video. I have a somewhat of a complex question. I'm being asked to find the length of a cubic structure and i'm given the "d spacing" information (8 total values). Also i'm given that it's molecular weight. I know that this concept applies but i'm not really sure what my instructor means by length. Any insight would be great, thanks!
i understand that wavelength needs to be approximately that of the slit for diffraction to occur. But you didnt draw waves of different wavelength you drew waves of different amplitude. You are good at explaining things. But the way that you and so many other people have tried to explain wave behaviour by drawing emr in the way that suited them (as transverse waves, as wavefronts like in water waves), has made visualising and understanding emr behavoiur so fuxking difficult.
I love the way you pronounce the words, very clear and explicit explanation. Very useful for foreign students. Thank you.
Exactly my intention! glad to hear that! thanks! :)
I needed this for geology and it really helped.
Clear, concise, accurate. I can't ask for more.
Thanks.
You're welcome Melanie! :-) Geology is a great subject!
I am studying this relating to crystallography under geology...
Awesome! Though it's duration is less than 7 minutes, you have given a lot of information which is clearly understood. You saved my time!
SpandanaV Great ! :-)
Thank you so much for you excellent explanations and teaching! I enjoyed this video along with many others. You have helped to make my modern physics class easier! God bless!
-Andrew
4:45 I think you meant it travels dsin(theta) more
Best teacher by far.
in one single locution, supreme video .many thanks sir.
lol...finally..finally..i understand the concepts...thanx..
Manga worm awesome :) you're welcome :)
Wow, it was an outstanding video. It has cleared all my doubts. I have been watching many lectures since morning on youtube and now, I have got a perfect one.
i wish you can make further explanation bout XRD; phase identification, xrd patterns, diffractometer etc. i like how you explain it repeatedly. you such a good lecturer! awesome
Mind blowing ,,,, explanation ,,,,, thanks a lot sir 😇😇
Beautiful video. Thank you so much.
Tomorrow is my finals and I got the concept just today... thank you so much! loved the way you explained !!!
Thank you very much for sharing, I was having trouble understanding this and you put it across very well!
You're welcome!
4:39 -- 4:44 "And that lower wave will travel a distance of d sin theta less."
You mean MORE, not less.
Rght
super.and clear explanation ... started loving your lecture..
sathish shastry Thank you! :)
Thanks man. You increased my understanding on Bragg's Law
thank you, lots of love from central Europe
Am now beginning to understand what xray diffraction is all about. Thanks alot Sir.
Here is something you should know.... YOU ARE GREAT .... Fantastic explanations....no one does it better!!😊😄
I have a naive questions that I hope you can help me with. For waves 1 and 2 in the Bragg diffraction diagram, how can they interfere if they are not even reaching the same position in space? 2. Why do we only consider
So prepared and very engaging. GREAT
U explained so well man ! Thanks
very clear explanation , I really understood the basis of wavelength determination of X ray by diffraction method
Thank you, your videos are very useful and easy to be understood
Great video, I finally understand Bragg equation!
Thanks man
dude you are awsome!! pls keep do that, it is soooo helpful!
its very helpful lecture and explanation...I can understand it even just via the first explanation..credit to the lecturer..
Abdul Hakim Md Yusop Glad to hear that! :)
This video helped me so much with my project! Thank you :)
Omg mind blowing teaching 😍😍 thanks, you helped me alot
lecture is well structured ..great explanation...
I dont understand the part about constructive interference" when the distance they travel is a number multiple of there wavelengthes"??
I like this guy!
You can build your own x ray machine. Build a Tesla coil from a kit and hook it up to the cathode of a dental x ray tube. Under a photographer's red light, cut a piece of film and hold a chicken leg in between the paper and tube for 20 minutes. You will get an x ray showing the bones.
Fellow Brooklynite here! Thanks for the video :)
+Anne Li Yes!!! :-) Did you to go school HS in Brooklyn?
Yes! I went to Edward R. Murrow :) Now I'm at Johns Hopkins. Did you also go to high school in Brooklyn? :)
Absolutely fantastic video.
sir what differences between crystal diffraction and x ray diffraction ....?
Awesome! way better than how my professor explains it
OOOO MG...u are too good i even sometimes look for a maths topic u may have lectured on...Why don't u try that too?
thanks i have an doubt that you told that d is equal to the wavelenght of the x ray so in bragg equation wavelenght cancels out the d and we will get only n= sin of angle
he didn't say that d is equal to the wavelength, he said it is on the same order of magnitude. There's a distinction between the two.
hey man could you make a video on solving phase problems in x rays crystallography
Awesome lecture as always..nothing less
Some molecules are not bonded in a crystal orientation or bonded differently like ionic bonding covalent, etc. Does X-ray crystallography have limits on the types of molecules or compounds it can determine? You should have mentioned briefly its limitations like you mentioned its uses.
waw, this is cool . You have connected the celebrated 'double slit experiment' with X-Ray diffraction.Thats look more logical. Thank you
Love these lectures :D
Amazing sir your pronouncuation accent is very helpful thank you sir
Muy buena explicación !!! gracias saludos desde Argentina !!
Thanks sir
If the rays of x ray are parallel, they are never going to meet at a point so how come interference takes place?
Please clear my confusiom
Very clear explanation , thanks alot.
Best explanation ever
why it is assumed here that diffracted rays appear to be one li ke reflected from crystal planes?
Its so help full to understand distance students
Good! :)
Great job man! Do you have anything about IR Spectroscopy and Neutron Diffraction?
Awesome explanation!!! Thanks!
Very good explanation.
Really liked it thank you :)
Anjan Kumar You're welcome! :)
sir when xray fall on fill distructively then in that case what will be expression for braggs law
not fill its film
You are so logical, thank you very much
Good explanation. Thanks
good finally i understood
Thank you this video was very helpful!!!
How this reflected ray can interfere since they parallel!
hi!
what kind of reciprocal lattice dose an isotropic polycrystal have?
I was hoping you would explain miller indices, I came here to know how to read XRD spectra
amazing explanation
great explanation thanks
God gifted talent.
Extremely good! Thank you
theshortcut101 You're welcome! Glad you thought so :)
and sir i request sir plz send me this lecturer notes this lectures is very understanding and helpful
Wow cool man
i will follow you man
but i have a question what does ( in - phase ) mean ?
thank you! i still feel like i dont however understand why its 2dsin(angle) and not just dsin(angle) :(
Huu Tiainen its because the ray first covers distance dsintheta to reach to the atom in the lower surface then it is reflected and again covers a distance dsintheta to reach to the upper surface/boundary.since
6:17 how the distance btwn the atom can be known? help
Listen again, it is not known but is calculated from the known values using Bragg's law. Solve for d: d = mλ/2 sin θ
@@stumbling thanks mate😊
Where is the diffraction in the Bragg's experiment - doesn't it just reflect? You didn't say that the x-rays diffract at any point :O.
Excellent explaination! Articulate
Nice keep it up good explanation
Reading out of the modern physics book was a little non English, wonderful description.
lol! i know that exact feeling! :-)
Thank you, great explanation.
Glad to hear it, you're welcome!
x-rays are diffracted then reflected...and the reflected waves then interfere...
why we put that 2 in the Formula ( 2dsin*)
The x-ray has to travel from the surface of the material to the atom below the surface, which is a distance dsin(theta1), it is then reflected back to the surface covering a distance dsin(theta2). As the angle of incidence is equal to the angle of reflection both distances are equal and then the sum of the both and is 2dsin(theta).
oki thank u sir :)
thanks for the explanation!!
wonderful very helpful
thank you. this was really helpful :)
Awesome! You're welcome!
First time that I see youtube's autogenerated english subtitles work haha
Quite useful, thank you so much!!!!!!
thanks,master
Great video.
I have a somewhat of a complex question. I'm being asked to find the length of a cubic structure and i'm given the "d spacing" information (8 total values). Also i'm given that it's molecular weight. I know that this concept applies but i'm not really sure what my instructor means by length. Any insight would be great, thanks!
thank u that was really helpful !
umm... where has Diffraction taken place here???
Thank you so much!
Great. thank you very much
I had my volume on 1 and you still blew my speakers... Good teaching, though.
i understand that wavelength needs to be approximately that of the slit for diffraction to occur. But you didnt draw waves of different wavelength you drew waves of different amplitude. You are good at explaining things. But the way that you and so many other people have tried to explain wave behaviour by drawing emr in the way that suited them (as transverse waves, as wavefronts like in water waves), has made visualising and understanding emr behavoiur so fuxking difficult.
good in explanation
Wonderful ....
Wow, you sound like Richard Feynman. You from Queens? Awesome accent!
lol! close enough, Brooklyn! :-)
Wow man..just wow..
Great explanation. I fucking love your accent btw
+Kyra Woods lol! thanks Kyra :-D
goo ahead. excellent explanation.
thank you
marknkh7 thank you!
Mind blowing
Amazing