Introductory NMR & MRI: Video 01: Precession and Resonance

Paul Callaghan gives an introduction to NMR and MRI. Paul uses a mechanical wheel to illustrate the key concepts of precession, relaxation, and resonance. First in a 10 episode series produced by Magritek Ltd. see www.magritek.com/videos for more

[@madhusudanganigara6211]

The best and most easily understood of all the numerous MRI lectures. Thank you Sir Paul Callaghan.

[@dalokgawd]

Thank you SO MUCH Dr. Callaghan! I have been struggling to understand the concepts behind NMR for a while now and have not been able to find a simple, clear explanation of the basic physics behind NMR until now. Your videos are amazing and make a very complicated and difficult to understand concept much easier to grasp!

[@Muonium1]

I was just looking for more videos about NMR after viewing this wonderful series when I saw that Sir Paul Callaghan had died of cancer a few months ago. What a shame. This amazing man has helped me, and from the looks of things, about a hundred thousand other people all around the world understand NMR much better than I had before. I have no doubt that he will help millions more in the future. RIP Dr. Callaghan.

[@andrepoon]

You sir... are a genius!

[@rufus10000]

Thanks a lot Paul, you are a very good teacher.
videos like this make youtube so great.
Greetings from Germany

[@bethepro]

This is an amazing video where such a complex concept is taught in such simple terms. Prof. Callaghan you are a star.

[@aliensrreal89]

RIP Paul Callaghan. Thank you for these videos, great help!

[@dydxdydududx]

Dr. Callaghan;
You are the world's greatest lecturer! Can't wait to see the rest of your videos!

[@Takoeye2008]

I'm so glad I stumbled in to you and your videos. I'm an MRI Tech and this video was so easy to grasp and understand. I understand how it works but the way you explained and demonstrated precession and resonance is so easy to understand. Thank you and will view the rest of the videos.

It is really the best online videos series of NMR I´ve watched, congratulations.
Finally I´ve understood relaxation times: T1, T2 and T2*!

[@mark-qi6di]

My goodness! After hours of trying to grapple with MRI, this is so simple to understand because it's explained so well.

[@jayospina]

THANK YOU SO MUCH!!! That was a great and clear explanation of NMR.

[@EdgarGuevaraCodina]

A very didactic demonstration, thanks for sharing your knowledge!

[@marasmix]

oh, thank you, i'm studying for my medical imaging exam this morning. this video helped a lot. i understood the basics. great job

[@musicaddiction6]

Thank you so much for uploading this, it really helps me to understand NMR and MRI.

[@lachiffre]

That was truly excellent and very easy to follow! Thank you very much!

[@ad2181]

@5:19 A beautiful explanation easy to understand and remember.
@ 6:10 (he left out) the stimulus field is very small compared to strength of the static field.

[@SuzH929602]

This is a beautiful presentation. Excellent explanation of precession and resonance.

[@TOM-hl4md]

Thanks a lot ,very good demonstration.

[@Plottoberry]

I'm going to do my reexam on Friday, so I'm going to watch all your video's. :) Thus far they are very helpful. I've seen yours on T1 and T2 and T2* before, it was the only explanation that made me understand the concepts!

[@rachnap11]

excellant demostration
You made the concepts seem simple
Thank You

[@ali566]

Excellent Paul..thanks for sharing this

[@ziweichen8668]

Thank you so much for this genius explanation!!! OMG that explains A LOT!

[@VasilyVorobyov]

Dr. Callaghan the best!

[@asylverfox]

Thank you for the wonderful lecture!

[@ladybugcdl]

Thank you for the demonstration as I am taking MRI this Spring 2013.

[@hlgr]

amazing, thank you for making these videos!

[@arunmc12]

Beautiful explanation...thanks a lot for the video!!

[@Ghostalitta]

Excellent and great video

[@nit78]

Thanks a lot. I am trying to understand NMR just because it fascinated me, and i think i have the initial grasp

[@DrKarrarLab]

Thank you so Much Professor for nice illustration

[@yumfoodlover]

so helpful for learning MRI basics!

[@123maddyrules]

Awesome sir...the concept u have explained so nicely by demonstrating with the help of wheels, probe etc are amazing.. these concepts are very difficult to get by going through the books...almost i have watched all your videos...each professor should demonstrate the same way......!!!! thank you so much sir...!!! :)

[@aenychaudhari]

truly helpful

[@therelliknaip1]

Truly excellent

[@NurulSiBackpacker]

Thanks a lot Dr Paul Callaghan for this explanation.. :D

[@gevorkbabayan]

thank you

[@PostGrad365]

Thank you for your explanation

[@bunker83]

Very helpful! Thank you

[@marebearzzz027]

great!

[@makesmedisappear]

Thanks so much, this is great :)

[@chorcor888]

thank you doc

[@mialata]

Genius!!!!! thanks a lot!!!!!

[@SquirtleScott92]

Thank you so much! My textbook makes this so much harder to understand.

[@bott0610]

wow, where have you been all semester?

[@andtel1]

Oh thanks a lot! I'll try to translate it in russian and retell&demonstrate it to my friends.

[@bossidus]

x1000 thumbs up

[@andycasdmx]

wish that i had seen this as an undergrad. I struggled to understand nmr at the time.