Im in my final semester of my program, and this is the first time I've ever received a good lecture on this. Your lectures are fantastic and your students are lucky to have you.
A quick remark: in the Arrhenius expression of diffusivity D=Do*exp(-Q/RT), Do is not the diffusivity at the absolute 0, it is instead the maximum diffusivity that you obtain when temperature approaches an infinite value
W = + 4/3*pi*r³*delta_G_v+4*pi*r²*sigma, Delta_G_v = G_solid - G_liquid < 0 hence negative! Also r* = - 2*sigma/delta_G_v. W* is right, but only because you copied the right answer :D.
Actually, does not strain energy add to the total nucleus energy? Then this will make the stabilization of a nucleus even more difficult, yielding a larger critical radius (with the assumption that all the strain energy is accumulated in the nucleus). Thanks.
Im in my final semester of my program, and this is the first time I've ever received a good lecture on this. Your lectures are fantastic and your students are lucky to have you.
How can you not like this guy??
This video saved my life thank you so much you're a great teacher!
A quick remark: in the Arrhenius expression of diffusivity D=Do*exp(-Q/RT), Do is not the diffusivity at the absolute 0, it is instead the maximum diffusivity that you obtain when temperature approaches an infinite value
Amazing explanation, understood the concept clearly. Loved it!
W = + 4/3*pi*r³*delta_G_v+4*pi*r²*sigma, Delta_G_v = G_solid - G_liquid < 0 hence negative! Also r* = - 2*sigma/delta_G_v. W* is right, but only because you copied the right answer :D.
simply love listening to you...
may we please have some lectures , we really like the methodology used .....proudly NUST students
you video saved my semester
Why is gas constant here? There is nothing about gases but it appears in equations anyway.
is there a mistake in this video that the added strain energy should increase the W* rather than decrease?
you explained that so much better than my professor :(
hocam sizi allah gonderdi sevgileerr love from turkey
hangi okul
Thank u sir for making me clear🙏
In 28.18 and 28.27, Prof. Dye actually means to say w* goes up -- not down.
In 5.43, l_ave ~ sqrt(D*t)..... Isn't D that depends on the jump or frequency rate, and not t ?
very good explanation...
Your lecture is so good. I want to study master degree with you
Actually, does not strain energy add to the total nucleus energy? Then this will make the stabilization of a nucleus even more difficult, yielding a larger critical radius (with the assumption that all the strain energy is accumulated in the nucleus). Thanks.
Thank you so much!
thank u really helped
Steel Making process
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