Geometric Optics Intuition with Mirrors and Lenses Concave Convex Diverging Converging | Doc Physics 

I had only ever seen this with lines on paper. Seeing this done with actual light is beautiful! Thank you so much! Also love the enthusiasm!

when im into the whole thing Doc: okay bye

I never really liked lenses until I started playing around with them more. I hope you have a chance to experiment, too!

you make me actually want to understand physics

Very helpful for me who wants an actual example of the lessons! I also love the enthusiasm. Thank you very much for this!

Very helpful! This was hard for me to visualize but now it makes sense. Thank you!

u r very interesting ... if u give me the lec. in my university sure i will not only love physics but also i will love the university :-)

You can get lasers for just $5 at Walgreens these days. Diffraction gratings are cheap, but you'll have to order them from a science supply store: Diffraction Materials Card ($6) at Wards?

You were my favourite teacher in intermediate, you're my favourite teacher in medicine. I'll never forget you, Dr. Schuster! 💖

You actually discussed and gave all the important info of all the topics worth of 3 classes in my university.

THE WORLD NEEDS MORE TEACHERS LIKE YOU

Thank you for the help! Optics makes so much more sense with real examples.

Thank you! I hope to visit the Philippines someday. I would call that light a "ray box" or something like that. It came in an old "blackboard optics" kit that our school has had for decades. Laser ray boxes are easy to find now - I use those in another optics video (lenses, I think). Keep up the hard work!

Wow Sir, you are a genius!!! Thank you Sososooso much for the perfect explanation. I'm so happy to be able to finally understand this concept that I can literally jump up and down and scream "You rock Doc Schuster!!!"

Thanks! I agree with your assessment of many demonstrations. One must present cliffhangers and teasers or the kids shut down. And there's so much beyond even what you and I understand, so how can we keep from being excited?!

Thank you so much for doing this. I wish I found out about this channel earlier. I will share this with everyone I know taking physics or prepping for an entrance exam like the MCAT, DAT, DOT...etc. Thank you for taking your valuable time to do this.

wow thanks for the video sir. i always thought that optic is a boring subject to learn. but now i am more and more understand right now. thanks

I love hos excited you are! Very interesting way to get us to actually care about those lenses. I actually have a favorite now! :D

Whoaa..! Great VOICE Activeness And the way to tell!

Wow, after years and years of reading about this in textbooks I never quite understood it. But after seven minutes of video I feel like it's the easiest thing in the world. Thank you very much!

I love you! I'm a visual person and you made it so simply. Thanks!

I apologize for my oversight, and I thank you for your constructive criticism. I've always been sloppy on a couple of those typical mistakes. I envy the British, who seem so effortlessly to speak so flawlessly.

"BOOOM!" lol

Great video on Convex glass. Thank you very much!

I just bought them from a catalog, actually. They're made in India, they're really nice, and they're not pricey! Hooray, India!

Thank you soooooo much for your videos!! I've watched all of your optics videos now and I understand everything now for my test tomorrow!!! Your videos are amazing please keep making them!!

i love his enthusiasm

Thank you very much for uploading this video. I don't know what to do with my task if this video doesn't exist!

Great video! Doing some lens experiments right now and this was hugely helpful! It's been way too long since Physics 211 to remember much about lenses!

beautiful sir i undertand instantly

That was amazing! Thank you very much, sir

This is better than my teacher's explanation

This is great. Thanks Doc.

Thank you very much this is so clear to understand

Thank you sir you save my life

good job easy to learn ray optics

thank you for this video !! it is so much fun

that s extremely fascinating! It acceptable for comprehension totally!

2:36 me 2:41 life

You bet! Thanks for the feedback.

this is so fun :) Boom! Thumbs up man!

Pretty practical and cool...

Thanks, its very intuitive demo

It's wood (?) with silver on both sides. Not an ideal mirror, but great for demos.

MIND BLOWN! D:

I wish I did but I don't. I had the opportunity to play around with prisms in physics this year but I think I didn't appreciate them back them as much as I do now. I wish I could redo my first two semesters of physics now that I understand everything better. When am I ever gonna have the opportunity to work with lasers and diffraction gratings and all that cool stuff... It sucks that I didn't enjoy it while it was happening.

Sorry, it's been many years. I have no idea. Some came in a "blackboard optics kit," so you could search for that or "acrylic optics blocks" or something. Best of luck.

Amazing demonstration. I have always been curious about what my camera lens is doing.. how they can change the directions of light coming from any angle into parallel light that is projected onto an image sensor.

Thank you so much💙

great job, stay blessed

I would try a web search for blackboard optics kit. Our kit is VERY old.

wow, this explains how we see the world

More optics from you

that was intense:)

I get about 4 for the index of refraction just off a rough estimate of the angles of incidence/refraction. I'll do it again later more accurately.

Perfect.

Very good video. . . .that intro bit about someone emailing you was a bit odd though.

Thank you!

thanks you help me with my test

Hello. I'm Cathy, a Physics teacher here in Philippines. I found your way of lecturing as funny yet informative! Because you really made me laugh with the words you are using. :) But I have a question, what do you call the source of light that you used upon making this demo? Thanks and more power!

very cool! What kind of light source are you using or would you recommend to do this demonstration? Thanks!

わかりやすい👍

Thank you

Sir, please please please please please make a video on show how spherical aberration occurs in convex lens, how to reduce spherical aberration using plano convex lens by experiment.

Cool video, explains the matter better than the others I could find on RU-vid. But You only cover Plano-Convex/Plano-Concave Lens. Could You also cover the lenses convex and concave on both sides?

Thanks! Yeah. You know when you try to be funny and it just doesn't work? At all? I think I'll crop that out now. Thanks for the reminder.

One thing I could not able to understand on mirror lenses used in DLSRs. Will the mirror in the center of the lens is an obstacle?

Hey Doc, this is a great video. Could you please tell me where can I buy this kit, that you are using to demonstrate all this physics ?

Very very Thank's !!

hey!!! question--- did you cut by laser your acrylics? or how did you made them??? thanks for the video!!

I have question. Why does a plane mirror reflects light and not reflect image. I mean we can obtain that reflected light beam on a paper, but we can't obtain a reflected image on a paper (from a plane mirror)?😕

Extra time is one of those things I don't have. Best of luck on the problem, though.

what do you call the thing you used to give the beam of light?

sir, please shows how chromatic aberration occurs in lens ,how it is reduced by plano convex lens by experiment

Sir can you please tell how do you get that beam of light for the experiment. I am interested in knowing the source of beam.

Doc!! would you mind, if you have it available, the data for buying those things? the webpage perhaps??? Hooray optics!!!!

What are you using for led source, how do get it collimated?

Inverting the plano convex lense will be ?

Hi Doc! From Where I can get thise type of lens and mirors ?

What's the light source? What brand? You need numbers or otherwise it makes no sense

sir, what do you call the mirror that you used to demonstrate converging and diverging lens?

Sir I want to know what will be the thickness when line coming out from the lense..any formula to calculate

sir..cud u plz tellme which side of concave mirror is polished with silver??

👌👌👌

Which LED is that?

make on video on cylindrical lens

Just what precisely is a "ray of light"?

WHERE CAN I BUY THOSE MIRRORS USED BY YOU SIR?

And since we're talking about it, would it be too much to ask you for your help with this one particular problem that I have to solve. I am having troubles calculating the angle of incidence so maybe if you have some extra time i could send you a photo and the details of the problem and you can help me figure out with the equations. I don't want to bother you or anything

this dude really likes optic physics with his legitimate expression of enthusiasm lol.... i know for a fact it's all real... nerds like this type of shit.

What is mear??

yeah i’m fucked for my physics test

I was reading the comments to see if someone had calculated the index of refraction to compare, but I think no one did xD, anyway, I got about 1,53

SIR ,WHAT IS THIS QUANTUM JUMPING ? COULD YOU PLEASE EXPLAIN IN SHORT ?

Are you a teacher? The correct answer is yes. Please send this to all "teachers" in the world ever.

Quantum whatever, what, don't can't not even. fine byeeeeee

Very helpful for me who wants an actual example of the lessons! I also love the enthusiasm. Thank you very much for this!

good job easy to learn ray optics

good job easy to learn ray optics

good job easy to learn ray optics