Sir, If the surface attractive force proportional to r^-2 is constantly changing then this Van der Wall forces will surely cancel each other out in any period of time? So how do you reason that there is a constant force present within the graph region < r-6??? Many thanks
first of fall he wrote wrong LJ curve is potential vs distance not force vs distance .He said at time-- 43.59 that the LJ potential curve is repulsive in nature when once the physical contact is made so my question is when the force is zero at an instant where distance is lower than lower potential point what happen at that point means is particle doesn't feel any thing is they at equilibrium at all. I am taking at an instant not an interval. physical what was happen at that point I think it might not be repulsive at all because at very low distance repulsive nature is dominant but here force is zero
Region of repulsive region and attractive is not correctly identified. It would have been correct if it were potential vs separation not force vs separation.
force due to gravity between two object is mgr where r is distance between these object ? wtf how is that possible ? it is must be the inverse square law please correct it . time -- 34:06 please watch it carefully
Excellent lecture, clearly explained the fundamentals of AFM, Thank you
really.very clearly explained and generate the interest towards the lecture....thanks a lot...sir
Thank you so much. Excellent presentation. I really like it.
sir you explained in depth like AFM. thanks a lot :-)
Thanks very much for such very good course....
very very helpful sir
sir u explained in a excellent way
excellent and very good and easy way of understanding the afm
thank you so much sir
head soft to you
outstandin sir...described from elementary level
thank u nptel
At 50:36 Attractive=Repulsive NOT at phi=0 but at the minimum.
Equilibrium is Force=0 not Energy=0, but Energy=max, (dU/dr=0)
Informative and good!
Superb
Nice presentation sir
Thank you prof.
GOOD SHOW NO CARBON TRANSPORT, POWER PLANT GHGeR 25 BnT/Yr Net GHGe= 120 PPM
Great
Sir, If the surface attractive force proportional to r^-2 is constantly changing then this Van der Wall forces will surely cancel each other out in any period of time? So how do you reason that there is a constant force present within the graph region < r-6???
Many thanks
thank you sir
_Raster_, not ruster.
great explanation!
first of fall he wrote wrong LJ curve is potential vs distance not force vs distance .He said at time-- 43.59 that the LJ potential curve is repulsive in nature when once the physical contact is made
so my question is when the force is zero at an instant where distance is lower than lower potential point what happen at that point means is particle doesn't feel any thing is they at equilibrium at all. I am taking at an instant not an interval. physical what was happen at that point I think it might not be repulsive at all because at very low distance repulsive nature is dominant but here force is zero
Region of repulsive region and attractive is not correctly identified. It would have been correct if it were potential vs separation not force vs separation.
force due to gravity between two object is mgr where r is distance between these object ? wtf how is that possible ?
it is must be the inverse square law please correct it . time -- 34:06 please watch it carefully
unnecessary discussion.....no scientific background in the lecture
It is only for beginners. Not for people with advanced level of understanding.
AVOID FACE. SHOW SLIDE. WASTING TIME IN WRITING
Excellent lecture, clearly explained the fundamentals of AFM, Thank you so much