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!

[@bethepro]

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

[@andrepoon]

You sir... are a genius!

[@aliensrreal89]

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

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

[@dydxdydududx]

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

[@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.

[@rufus10000]

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

[@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.

[@jayospina]

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

[@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

[@EdgarGuevaraCodina]

A very didactic demonstration, thanks for sharing your knowledge!

[@musicaddiction6]

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

[@mark-qi6di]

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

[@SuzH929602]

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

[@lachiffre]

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

[@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

[@VasilyVorobyov]

Dr. Callaghan the best!

[@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.

[@TOM-hl4md]

Thanks a lot ,very good demonstration.

[@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...!!! :)

[@ziweichen8668]

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

[@hlgr]

amazing, thank you for making these videos!

[@ladybugcdl]

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

[@asylverfox]

Thank you for the wonderful lecture!

[@Ghostalitta]

Excellent and great video

[@arunmc12]

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

[@DrKarrarLab]

Thank you so Much Professor for nice illustration

[@nit78]

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

[@NurulSiBackpacker]

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

[@yumfoodlover]

so helpful for learning MRI basics!

[@aenychaudhari]

truly helpful

[@therelliknaip1]

Truly excellent

[@makesmedisappear]

Thanks so much, this is great :)

[@bunker83]

Very helpful! Thank you

[@gevorkbabayan]

thank you

[@PostGrad365]

Thank you for your explanation

[@mialata]

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

[@marebearzzz027]

great!

[@SquirtleScott92]

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

[@bott0610]

wow, where have you been all semester?

[@chorcor888]

thank you doc

[@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.