Convex Lenses

[nmmonty23]

wouldnt the second example be a virtual image not a real?

or i may be wrong plz tell me

[ShaunSeow]

I give thumbs

[cameron176]

you just saved me from lose 25% of my marks for my yearly tests with your parabolic and lens videos THANKYOU!

[sandrdpk]

its spelt lens

[adityamudgal0]

AWSOME

[adityamudgal0]

LENSE



[enantiomerremoitnane]

Thank you for this video. I have attended college physics courses that did not explain lenses and optics as well as this video does. Keep up the good work!

[BelievetheSt0rm]

1:15 Green Sweet potato

[surbvtr]

vagina!



[PearlLikesBirds]

I am really thankful for your videos...Physics is my favorite subject, but sometimes I can't understand the teacher and I get really stressed out, but then I watch a video of yours and everything gets clear! Thank you so much :)

[baronfillpot]

I LOVE YOU MAN!

[ullasrajchellappan1]

You are doing a great selfless service to humanity and the student world , where everybody and everyone, especially, teaching and sharing knowledge has become an industry just to make money!!!

[darkman8803]

all hail da khan

[AlphaCrucis]

Wow you're doing optics now? Or is this going to be part of the physics playlist?

[Rivoluzzjoni]

the only person who can top your voice is Morgan Freeman

for obvious reasons

i love your videos

[shinuito]

@Rivoluzzjoni i'd think they're close to being on par anyway. they're both really easy and interesting to listen to

[sbut851]

@Rivoluzzjoni I dno, I think Liam Neeson is up there

[chispee]

UR AWSOME !!!!! just awsome

[TMan7997]

OMG FIRST COMMENT ON A KAHN ACADEMY VIDEO!!!!!!!!!!!! lol sorry Sal. Thanks SOOOOOO much you have helped me a ton!!!!!!!! You explain everything perfectly. :D