Physics: Optics- Thick Lenses (2 of 56) The Nodal Points

In this video I will explain what are front and back nodal points.

Next video in this series can be seen at:

[LPsongsandtutorials]

This video is from 2016 and this is more useful than my actual optics course. Thanks a lot, sir, you're a very good teacher. Greetings from Mexico.

[manla]

I supposed to learn all these many years ago in the university. However I hardly understood it until now. Thank you very much for filling my gap of knowledge.

[shanetography]

I needed a short, concise, easy-to-understand definition of rear nodal point. This video truly delivered! I have NO experience with optics/physics classes, but you explained this in a way that I could easily understand. Thank you so much!

[SaintCB]

this video is amazing! respect it's really well made professor!

[agstechnicalsupport]

A very good explanation of nodal points in thick lenses !

[TheChewyleaf]

Your link to the next 3rd lecture is broken, just to let you know.

Thanks these are v helpful

[devyansol]

Sir you teaches very good in minimal time. Good quality education in less time.
Thanks alot sir

[danoptical]

Thank you for the explanation,
but the effective focal length (in image space) for a thick lens that is between air and water, it is useful to measure it:

-from the
posterior NODALpoint,

-from the PRINCIPLE point,

-or from the optical center (minute 0:34) ?

[Skandalos]

In what practical cases do the refractive indices in front of and behind the lense differ?