very helpful for grade 10 physics

Your better than our teacher and textbook combined. XD

It's been 11 years since this was posted, and I'm still using it! Thanks a lot!

Thank God I found you. You sir are a hero. You should teach at a University instead of all the professors who pretend to teach, those who go on an on for an hour complicating things and making life harder.

Simply no other explanation is as clear as this one. I looked in my textbook, I looked at my teacher's notes, I looked at a few other videos, etc., but nothing compares to this one. Thank you so so so much for this video, you are absolutely amazing. I am on my way to watch a few more of your videos to clear up my understanding, and I also just subscribed! I will definitely recommend this channel to my friends. You have a gift for teaching; please don't stop! Thank you~

It has been 10 years since this video is posted and I am here to tell that you helped people a lot and that includes me as well! you are a lifesaver thank you!

Absent for a day and missed an hour lecture, this dude just discussed it in 13 mins and I understood it directly.

For some reason i dont even know why they teach us this. It doesnt even relate to something i want to do in my life

I’ve spent all day trying to find a video to understand (I have a rly important text tomorrow) and you just literally saved my life

This was made 8 years ago but this is the only video that helps me with my physics class, you're a lifesaver, sir.

thank u for explaining this to me like a toddler. u taught me everything i need to know for my exam in 12 minutes that my teacher failed to teach me in 2 weeks. very helpful!

thank you so much!! i've been banging my head against a wall trying to understand the logic behind ray diagrams. this is the best explanation on youtube

I have a quiz tomorrow in physics and this really helps! Thank you for making it so easy to understand!

this is amazing! thank you for doing this!!! it really helped me with my test!! i received an A+!!!!!!!!!!!!!!!!!!

Love it! You're very efficient and clear. I feel like I'm learning and not losing any time!

I've been looking for a decent resource on this for days and this is the first time I've actually seen the effects compared based on the position of the image. I cannot thank you enough, I wish that one day an $80 text book would be half as good as your explanations.

when you go into a test knowing more than you need to know

Immediately clear and effective explanation! I watched some other videos on the same concept and was still confused, but this was the exception for me. Also, I appreciate the length. Some videos are ~15-20min, which can take a lot of time. Thanks for the help!

I was falling behind in Physics for a couple of months and then I found your channel and I honestly couldn't be more thankful. This is one of the most helpful videos on here, and I'm doing good in physics altogether. Thanks a lot!

Goodness gosh! I really didn't knew that the way how the convex lens and concave mirrors form the images in the same manner till now! Thank you so much and that was so helpful rather than studying 10 different ray diagrams!!

Great that test went well, thanks for the comment.

your teaching is excellent ... this the first time I watch your video all I can say .....it's very simple an easy to understand much better than my teacher who has complicated things keep up hero

The best teacher ever 💞💞💞💞💞💞💞💞💞💞💞💞💞💞💞💞💞💞💞💞💞💞💞💞💞💞💞

Thank u very much... You explain better than my school... You saved me before my exam....thank u again a lot...now i can get more videos from your channel regarding physics

Thank you so much I understood it just in a few minutes rather than my teacher teaching for 2 hours.

thank you very much for this, my teacher cannon sufficiently explain things without losing concentration. Much

I learned more after watching 5 minutes of this video than the past week in class. Thank you so much!!!!

the best step by step science youtuber ever

Thanks for all of the comments.

Thank you so much.It helped me a lot.

thank you so much for this, it helped me out a lot! i don't understand my teacher because he talks too fast and he's not very good at explaining things, so i've resorted to youtube for help, and your videos are perfect because they give a really good explanation of the concepts and you make it really easy to undertand. thank you so much!

Thank you so much! This was great. My physics prof is so boring and slow talking that he puts me to sleep. He needs to use something else other than just a projector to explain something like this. He needs to make things come alive. Thank you again, because I got it!!!! Off to the final!

this dude gave me answer to my homework bro word for word.. thnks dude...

this helped alot!! I have tests day after tomorrow and I was very worried as this concept was really confusing to me and honestly saying that my teacher made it so complicated!! thanks a lot once again. I'm gonna rock my test 😃😃

You, sir, are a most helpful human being.

Thank you so much, this helps a lot, I now know very much about concave and convex. I'm a junior in high school taking honors physics, this is great. I don't understand it much when I'm in school but you made me understand it in 10 minutes! Once again thank you

what happens to the size and location of the image when you bring the flashlight nearer to the concave mirror?

Thank you so much! I finally understood this after so many days of struggling to find the right way to learn

Thank you so much....helped me in Ray diagrams which I couldn't understand for months, have an exam tomorrow!!! You are a saviour 💖✨

You are really better than my School Teacher as well as home tutor!!!!

Thank you sir I understand light and optics very well thanks to you! Now I can get an A+

Thank you, one can only try.

You're my new science teacher

thank u so much. i was thinking that ray diagrams are too complicated but u made it easy.i got it right in my test papers.thank u once again!!!!!

Wow ! It really helps a lot ! Thank you ! My teacher discuss it really fast .. But Thanks to this .. Now i Understand even its complicated :)

Sir can you pls tell me that how to draw a ray diagram for convex lens whet the object is at infinity ? A student from India

Thank you so much. This has helped me dearly understand rays in my physics class. THANKS!

Great video! Helped clarify some of my doubts!

I never thought that i will use youtube for studies😂 Btw very helpful thanks🙌🏻

Love this video! Just wanted to point out though that in scenario 1 (do>C), you mentioned that di is between C & 2f. However, in the diagram you have it between C & f (and also you mentioned that C=2f) so I think that was a typo!

I love this. I now fully understand this topic.all thanks to you. God bless you!

Best video on KZfaq for this topic

my god just an awesome video Sir thanks a lot 👏👏👌👌👍👍

thnkz great explanation! better than my ....teacher

Thank you, was really straightforward and helpful.

Thank you sir for your teachings as only because of you I could understand these diagrams. I could score good only because you made it simple for me to remember, many tried but failed and in the end it was you who could tell in such a easier manner. Sir because of you and these diagrams I could score more than I could except. Thank you so much.

thanks...it helped me alot for my test.. :-)

Thanks sir only now I understood that we have to understand physics instead of memorising.

This video saved my grade, thank you so much!

Excellent presentation, clear, well explained and great commentary. Thank you for the upload. It helped my 10 grader to get the grip on the subject. I liked your video.

thank you for sharing this.. It helped me a lot

Thanks sir u have really solved my problems

Cheers Bri, this was immensely helpful.

THANK YOU. Esp for what you pointed out at 11:02, I did not realise it at all. Blew my mind. Thank you so much!!

I wish you were my physics teacher for the year

you are really good!!!!

Thank you this video helped me a lot! I have a science test coming up and thanks to you I'm all set!

thanks so much for this... it really helped!! awesome!

THANK YOU SO MUCHHHH!! I HATE MY TEACHER AND YOU TEACH WAY MORE BETTER THAN HIM. IF I WERE A SCHOOL PRINCIPAL I WOULD HIRE YOU!!!

you are better than glad ease

I FINALLY UNDERSTAND IT YOOOOOO now I'm gonna smash my exam tomorrow! thank you!

this channel is very good......it makes easier to understand the important points

I didn't skip the ads eventhough they were annoying.

thanks now i wont fail my test

Thank you for so much for explaining ray diagrams! Keep on making videos. :)

This video was the best video about convex lens that I found in youtube...(helped me a lot..I was sooo confused with this topic)🙂

mans sounds like vin diesel

Anyone else from Bombay Scottish?

Thanks! This is a very helpful review for the test I have coming up on this. EDIT: Also, I now understand real and virtual images. The textbook and my teacher were terrible at explaining it.

Awesome. Just loved the explanation. Crisp.

We are doing this in grade 7

On 2:29, when you put on subtitles, it says "radar crap". LOL!!

tomorrow is my unit test this video had helped me a lot . i really thanks brian swarthout for this video . this is very awesome . thanks a lot

THIS! YOU EXPLAINED THIS SO WELL! Just got out of my class and this is all my professor had to say!!!! Lol

But what is the focus???

Thnx a TON Step-by-Step Science!!! This will surely help me for my exam tomorrow!!!

Very helpful thank you! So much better at explaining it then school!!

It was amazing!! I hope you keep going! It was so clear to understand...

Thank you this really helped me in my science homework, i was really confused why "at f" and "

Thanks a lottttttt sir!! Step by step science is the best!!! Want more videos!!!! Please!!! Already subscribed!!

Thank you! It's really helpful.

I never expected that I will get a video like this on KZfaq...Thnx for explaining it so clearlyy

like I say in your other videos you're AWESOME! and your voice is so soothing

omg the given are the same to what our teacher gave to us as an assignment T^T thankyouuu! but tbh I like the way you explain everything:))

Thank you sir!!! U make my day n ease my tension. I am no more worried abt my exams.

this helped me alot! thank you very much!! 💕

Oh my gawwwd this is very helpful 😭😭 Thank you sir, I have a test coming up tomorrow, this video help me a lot 😭😭

I can not thank you enough, You totally saved my grade.

i honestly didnt listen to my sci teacher because she was so boring to listen to and she was practically talking to the white board. thank you for this video !