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Raminder Singh, Sri Guru Harkrishan Senior Secondary Public School, Amritsar

-Sunday, 13 August 2017, 4:40 PM

very nice explanation       (referring to Banking of Tracks animation)



-Saturday, 30 April 2016, 10:10 PM

Outstanding ! Life for me has become Easier , better . Don't have to spend frustrating hours on my textbook, its so boring compared to what I see here. I want more topics to be covered. 



Reeti Moni, North Lakhimpur College, Assam

-Saturday, 27 October 2018, 8:44 PM

"Thanks so much, it is much clearer now" ......regarding Fresnel Prism explanation video

Light-Fresnel prism-2A





saif rahaman

-Monday, 12 February 2018, 12:47 PM


Light Interference - Fresnel Biprism - Part 2

Thanks Again




Samruddha Kulkarni

-Monday, 12 February 2018, 12:52 PM


Lenses- Convex lens- Ray Diagrams

Absolutely Great.......... Saved my physics paper


Sapan Kushwaha, 1st Year student, Jabalpur Engineering College, Madhya Pradesh

-Sunday, 22 April 2018, 4:37 PM

"Thanks" for the video "Fresnel Biprism- part 2" 


Sesha Chary

-Monday, 18 February 2019, 10:16 AM

"very nice great teaching. thank you regards" for the explanation of Light Interference - Fresnel Biprism

Appreciation-Sesha Chary-18thFeb2019

Light Interference-Fresnel Biprism-2A



Sheru Ansari

-Wednesday, 5 July 2017, 10:27 PM

Thanks, the videos help in my study.


Shubham Saxena

-Sunday, 3 February 2019, 12:46 PM

"Thank u so much sir. Now every doubt is clear" 

for the video on Fresnel Bi-Prism

Appreciation-Shubham Saxena-3rd Feb2019




Siddharth Rawat - graduate student, University of Connecticut , concentration area--Biophotonics

-Saturday, 24 June 2017, 7:04 AM

Hi, your explanation on Fresnel Bi-Prism is concise and to the point and is way better than others.

Siddharth Rawat




Note: see comments on Youtube.


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