Thank you for the excellent explanation. I appreciate you took time to connect the 1st Fick's law with the previous "related" laws. This gives students the bigger-picture without first diving into the detail. Thank you again.
Couldn't the negative sign on these laws be indicative of the fact that one quantity decreases with respect to an increase in the other as time goes by? Clarify. Otherwise thanks for these insightful videos professor.
The negative sign is just a convention based on our desire to keep the diffusion coefficient a positive quantity. Note that j and dc/dx have opposite signs. If dc/dx is positive then j will be negative. So if we write the relation as j=D dc/dx we will have to make D negative. Nothing will go wrong if we did that. We will then have to live with the fact that D is negative. Founders of our science decided that it is better to keep D positive and so inserted a -ve sign in the equation j=-D dc/dx.
Practically you cannot have infinite temperature. Stil, as lnD vs 1/T fits to a straight line, its intercept can be determined by extending the line to 1/T=0.
This prof is a legend
Thank you for the excellent explanation. I appreciate you took time to connect the 1st Fick's law with the previous "related" laws. This gives students the bigger-picture without first diving into the detail. Thank you again.
That Diffusivity was dancing on the camera lens.
No words to say about his teaching........just nailled it. Pranaam guru g.
Thank you I am Hossam from Egypt and I study in Germany and your videos helped me a lot
Thank you, grettings from México City.
Excellent sir
Here is the difference between an IIT Professor and the others.... An outstanding teaching skill. 🙏🙏🙏
😂😂😂 no lol. that's a completely wrong statement. This prof is an exception. Most iit profs have absolutely zero teaching skills
I cannot thank you enough Sir, All the best!
This channel is a gem...❤❤
Thankyou so much sir, your lectures are blessing of God.
The analogy is amazing sir ........ Thank you so much
Good explanation. Congratulations !
This is so awesome!
Great Job as usual.
Wooowwww........explaination is supb ....
Thank you sir ...love nd respect from Assam..... ❤️
This is great, thanks.
Thank you sir, nice explanation
thanks, greetings from Turkey
Good explanation
Best explanation ever ❤️
God bless you dear Indian genius
quite informative.
Thank you
Skip to 13:31 for the information you came for
Thanks
Couldn't the negative sign on these laws be indicative of the fact that one quantity decreases with respect to an increase in the other as time goes by? Clarify. Otherwise thanks for these insightful videos professor.
The negative sign is just a convention based on our desire to keep the diffusion coefficient a positive quantity. Note that j and dc/dx have opposite signs. If dc/dx is positive then j will be negative. So if we write the relation as j=D dc/dx we will have to make D negative. Nothing will go wrong if we did that. We will then have to live with the fact that D is negative. Founders of our science decided that it is better to keep D positive and so inserted a -ve sign in the equation j=-D dc/dx.
@@rajeshprasadlectures , Interesting! Thanks for the timely response Professor.
Sir in that lnD Vs 1/T graph
1/T =0 mean that T=Infinite .
Can absolute temperature be infinite?
Which mean that at T=infinity »D=D°
Practically you cannot have infinite temperature. Stil, as lnD vs 1/T fits to a straight line, its intercept can be determined by extending the line to 1/T=0.
@@introductiontomaterialsscience Thank you sir,for quick response 😇
Where is proof
Definition
thodi awaz badal lo sir, awaz chub si rahi h.....please change krlo apni awaz, isse achi to robot 2.2 ki awaz h
👍
God of engineers 🙏🙏🙏🙏
Thank you