Hey, just wanted to say you are amazing! I looked through all the other related videos and none of them explained why shielding/anti-shielding requires less/more radio frequency to flip the spin of the nucleus! Thank you so much!
NMR spectrometers can work in both ways - some machines alter the frequency and keep a constant external magnetic field (B0) and others change the external magnetic field and apply a constant frequency. Both methods give the same results in terms of patterns observed in spectra. At this level however I think the frequency changing is easier for students to visualise and I believe it is now generally more common for NMR spectrometers to have a constant magnetic field and altering frequencies. Hope that helps :)
This actually just saved my life...
Hey, just wanted to say you are amazing! I looked through all the other related videos and none of them explained why shielding/anti-shielding requires less/more radio frequency to flip the spin of the nucleus! Thank you so much!
Thank you! Glad it helped explain :)
I agree! So helpful!!!! I actually understand the topic now!
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Hi, the frequencys change ? cus we have been told that the f is constant but the magnetic field varies??
NMR spectrometers can work in both ways - some machines alter the frequency and keep a constant external magnetic field (B0) and others change the external magnetic field and apply a constant frequency. Both methods give the same results in terms of patterns observed in spectra.
At this level however I think the frequency changing is easier for students to visualise and I believe it is now generally more common for NMR spectrometers to have a constant magnetic field and altering frequencies.
Hope that helps :)
@@chemistry.student ahhh thank you so much :>