This was so clear and helpful, thank you so much!

Thanks alot by this video I came to learn about lenses clarity.

if i have r1 and r2 values given to me, how can i find the width of the convex lens ?

How does this work in a real lens with multiple elements? How do you calculate focal length? Is it the average of all elements?

Thank You. This is really helpful. Please keep on rock'n!

Personally I think we should get rid of length and use angle of view which is the farrrrr more important measurement number. Infact length really means nothing as this changes without affecting perspective by using different sensor sizes.

Hi ! If we have a plan-convex lens what is the value of R on the plane side ?

Thankyou ;) great explaining

It's very good for me. carry on bro!

Very nice explanation sir....😊

nicely explained

thanks for this!

Impressive video

Thanks love from India

Explanation is very clearly

how do i calculate the focal length of a lens with one side of the lens covered with a surface of a medium of another refraction index?

Thank u so much

Thnx buddy

Молодца !

Thanks

Came for something else but thnx

What is the focal length? Is it the length to the focal? Where is the focal?

Why is it so hard to number video's??? Nice video's, but it's a jungle!

:D

You first start about the definition next you explain

Nice job. Try to limit your "ahh" and "umm".

This channel is so sad

Thanks