Greetings from Argentina, Your explanation helped me clarify a lot of concepts. Thank You.
@209akashkumar4 Жыл бұрын
Say my hello to Messi
@deepansamleo93464 жыл бұрын
Excellent teaching sir. Wonderful explaination of concepts. Thank u so much
@prsprs40462 жыл бұрын
Very creative and helpful analogy.
@SandeepKumar-qv2fd2 жыл бұрын
Great sir 🙏🙏
@nagasai43284 жыл бұрын
Sir in the scientific paper to establish realation between gamma LV and H you have used the Youngs equation. To get youngs eqaution we have balanced only surface tension forces but why the weight of the liquid column is not considered.
@anurag70583 жыл бұрын
sir in capillary rise height term we also have a contact angle term which does not come here why?
@introductiontomaterialsscience3 жыл бұрын
This is interesting indeed. If you wish calculate the height by a force balance, as is usually done, then the contact angle becomes important. Without that there is no vertical force component that will balance the weight of the liquid column. But if you calculate it by energy balance, as I have done here, you can neglect the curvature of the meniscus as it cotributes only a little to the volume energy or surface energy. But then the final result comes in terms of liquid-glass and air-glass interfacial energy. If you wish to present the result in terms of liquid-air interfacial energy then one again has to bring the contact angle through Young's equation.
@anurag70583 жыл бұрын
@@introductiontomaterialsscience Thank you sir for this clarification. I get it now. Excellent lecture series by the way. Thanks again.
@bestcakesdesign3 жыл бұрын
Is this capillary rise same as in soldering process?
@introductiontomaterialsscience3 жыл бұрын
Yes, at the fundamental level it is the same.
@pailasaisravan54234 жыл бұрын
sir is gibbs free energy conserved ??
@introductiontomaterialsscience4 жыл бұрын
As it decreases in any natural process it cannot be conserved.
@prakhartiwari64334 жыл бұрын
Very good Afternoon Sir.... I am preparing for Gate exam (XE paper) first I take your lecture and then go for William D callister book that is sufficient for Gate Exam ... Please sir help me out if this is not sufficient ......
@introductiontomaterialsscience4 жыл бұрын
Callister's book should be sufficient.
@prakhartiwari64334 жыл бұрын
@@introductiontomaterialsscience Thank you Sir...
@vipingargvikky6313 жыл бұрын
Lecture videos give a very clear and lucid outline of whole chapter