GCSE Physics - How Lenses Work #69

[@mytutorsammy1624]

I just wanted to come say that you're videos are short, sweet, to the point and explains everything really well according to the GCSE and CSEC syllabi and they have been a MAJOR help for my students and I since we have all went fully virtual with school. All my students (advanced or not) have found your videos super helpful and I want to thank you for the work you put into these videos. It's much appreciated by students in the Caribbean. I hope you see this comment and the others because u are one of the best channels on youtube in terms of assisting secondary school students in their subjects. Hope all is well with you during this pandemic despite everything. I wish you all the best. 🇹🇹#868

[@Cognitoedu]

Thankyou so much Sammy, we really appreciate messages like this 🤩. Great to hear that your students have been finding them so useful and that we could help them continue their education even during the pandemic. All the best 😊

[@Cognitoedu]

If you’d like to practise what's covered in this video, check out the lesson on the Cognito platform - cognitoedu.org/coursesubtopic/p2-gcse-aqa-h-t_4.11. The platform’s totally free, and has been built to make learning and revision as easy as possible. The main features are: - Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown. - Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on. - Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like. - A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts. - A comprehensive bank of past exam papers, organised both by year, and also by topic. Amadeus & Tom

[@sidra6822]

This websites so underrated got me full 9's in my triple mocks 🙏🏼

[@isuridewmini]

This mans a god.. it only took a few time to cover ma whole syllabus , which ma teacher took 2 years to complete it ❤

[@tatumlogan2242]

LIFE SAVER! i have my igcse physics paper 4 in 5 days, and i am so stressed, but this helped immensely.

[@dreamer23495]

Don't worry! I'm sure your exam is going to go awesome! Revise your notes and text, and pretend to teach it to someone, try out different learning techniques that suit you. And most importantly, DO NOT PANIC !! everything will turn out fine, good luck!! 🎓

[@Rigby350]

So, how'd you do?

[@MohammadAli-cz6gv]

how did it go??????

[@ElectrossHD]

how was it???!!!!

[@kpoplover3936]

Mine is in 2 hours 😅

[@rehanmanzoor4198]

This video actually helped a lot. Keep up the good work!!!!!

[@angusismadeofspagghetti]

I might be a completely different syllabus (CBSE), but these vids have helped me and my friends sooo much, especially in math! Thank you for your excellent work!

[@pauldano2099]

I studied under cbse till 8th and switched to igcse..so i don't think its that different

[@TheOneWhoAsked.1]

Im cbse too these vids r awesome 👌

[@ishaan7208]

you explain things better than my teacher thx

[@ahmadzulfadli296]

Thank you! I'm from Singapore and taking o levels this year. Your video really helped me understand this

[@Cognitoedu]

Thanks Ahmad, glad they've been helping 👍

[@vhmsja]

knn cb o levels

[@calbeepotatochip]

@@vhmsja rude

[@Noor-ib5hf]

2:39 now thats what im talkin about! our teachers never told us this!

[@ehabibrahim5712]

Love ya man! My final CAIES are starting in like a week and your videos never fail to help me!

[@mango-pb2fq]

how were they?

[@ehabibrahim5712]

@@mango-pb2fq amazing, my result was really good too😌😌😌

[@mango-pb2fq]

@@ehabibrahim5712 NICEE IM HAPPY FOR YOU BRO my final igcse exams are at the end of the year

[@ehabibrahim5712]

@@mango-pb2fq u r gonna ace em One hundred percent

[@51quran_x]

@@ehabibrahim5712 what was the grade you achieved?

[@ImBobtheHampter]

You are awesome, you video help me in learn at school and study at home, thank you so much

[@siobhan2395]

this youtube channel >>>>>

[@the_invisibleperson101]

My physics exam is in one and a half hours and I'm watching all these videos to recap everything

[@muhammaddaim7390]

This man right here if u don't know is a legend right here

[@sskitty2532]

This helped me so much. Thank you!

[@muhammadsameerdar1091]

Sir, please make more videos of different grades and the way you were teaching was excellent.

[@samitasajeevan2659]

Such a wonderful animation!!!!Cleared all my doubts😘

[@Cognitoedu]

Glad you enjoyed it Samita!

[@scirvy]

Exam in one day 🔥 thank you

[@dark4ninja195]

Really your videos is so useful. They are short and sweet. I appreciate your work on these videos and all the explanations ❤

[@MUHAMMADZAINSHAHID-]

this helped me alot in my exams thank u

[@kristijonasnavickas8386]

Thank you for the video man, i hope i pass my test.

[@magnaitseren6188]

same

[@slowpy_.]

Same

[@prometheus_78]

Same

[@cozykittenqx]

Me clicks* Ad: how to cheat on ur class and get a full time mark, ! Me: me what is this KZbin

[@sum67-u8j]

lol

[@sanjith.k1983]

Simple, yet amazing. Thank you so much!

[@sohniazeeshan]

4:56 if the rays in a virtual image are not actual light rays then they're not real... then how does the image even exist, how can it be created when the rays are not real?

[@osamaabdullah6361]

Thanks for your help!

[@ayeskip8789]

Great video, really helped!

[@Cognitoedu]

That’s great to hear - thanks for taking the time to leave us a comment 🥳

[@isuridewmini]

This mans a god.. it only took a few time to cover ma whole syllabus , which ma teacher took 2 years to complete it ❤

[@TheOneWhoAsked.1]

I've been learning this chapter for like 3 years and this is the first time I feel like I understood something 😮

[@Msz-o3y]

شكراً ❤ thanks

[@sowmya000]

tysm sir this gave me an understanding of the basics

[@VarunGhadge-x5v]

your saving my 10th brother love youiuuuuuuuu

[@ayushman6445]

Thanks u made it easier for me to grasp the concept, hope ur initiative of letting free educational videos be successful :))))

[@meznasa]

youre saving my life THANK YOU!

[@yousufkhan5715]

thank you very much helped alot

[@muhammadaizaz2233]

Great video.......helped a lot

[@Astronomynatureandmusic]

Great video. Question: the chicken image on the screen at 4:28 appears to be behind the focal point. Is that correct?

[@excaliber2845]

the chicken is on the focal point not behind it

[@SenithiSuyama870]

1:27 1:28 1:28 1:29

[@galaxyadams4642]

these videos are awesome

[@jstar4207]

Awesome dude !

[@kobiecamp1134]

COGNITO, thank you for your services of supplying us with good details on how the lenses function. You are truly a excellent teacher of optical technology. But here's a question I have: how does the lenses in a camera correct the inverted image(from a convex lens) into a upright position? Is it done by combining a convex lens with a concave lens because a concave lens give off an upright image, or is there something else at play?

[@elenabarcan6355]

In a camera, the inverted image created by the convex lens (the primary lens) is indeed corrected, but not by directly re-inverting the image to make it appear upright to the naked eye. Instead, the correction process differs based on the type of camera and the technology it uses. In digital cameras for example, the convex lens in a digital camera projects an inverted image onto the image sensor (such as a CCD or CMOS sensor). The sensor captures the image as it is projected (inverted), and then digital image processing software within the camera automatically corrects the image. The software flips the image right-side-up before displaying it on the camera’s screen or storing it on memory.

[@tariqhassan3046]

Thank you so much.

[@zni1925]

The video is fantastic, but the correct spelling is principal focus and not principle focus

[@Cognitoedu]

Cheers for pointing that out!

[@jaigoyal2794]

Also - i don't think real images are smaller - surely they're same size? If not, please explain

[@jaigoyal2794]

@cognito

[@resuez]

@@jaigoyal2794 it depends on the position of the object

[@mr_tiger218]

Very helpful🤗🤗🤗👍👌

[@ikeyy344]

THANK U SOO MUCH! THIS HELPED ME

[@kimseokjin7526]

That's Lee know in your profile pic????

[@ikeyy344]

@@kimseokjin7526 HAHAHAHA YESH

[@memoboy4141]

Thanks bro you're a saver

[@nilanthiherath5841]

I am not a GCSE student. But a Sri lankan . This is helpful for my

[@Work-pf6si]

Thanks so much

[@FadzaiNdo]

Thank u guys u really are making my understanding better❤❤❤

[@nxgyt7461]

What about short sighted and long sighted

[@BHSmhurley]

Nicely done. Thank you.

[@lukecollins4130]

Good video thanks

[@trfaith6369]

i disagree

[@corcerercr7606]

@@trfaith6369 why

[@kakashismyfav]

thankyou ml

[@AarushSattani]

How do you animate these videos

[@Yosanloko]

was very helpful 😀

[@ghadaali9294]

THAAAANKKK YOUUU

[@telliksonhir7880]

3:28

[@ItzSa008]

Just wanted to say that it hurts when your trying to study but the ads in the videos are bout gaming 😢😢

[@iainhenderson4222]

BTW. It's principAL focus.

[@varunmotwani4129]

Thanks man

[@MarrowsRedemptionArc]

nice

[@masonballard2489]

nice

[@kentaz_yt1270]

nice

[@tomtrxsh4725]

nice

[@firestormjupiter]

noicst'd've

[@null3007]

nice

[@ifesjournal]

thank uu

[@uchihalougandais]

Someone in Tr Tonny’s and Alex’s class???

[@Zen__17]

Nah

[@ahnaf1158]

Amadeus Carnegieeeeeeeeee!!!!!!!!!!!!

[@DanielMay-zk6ib]

Lenses piss me off

[@rocketop664]

Really helpful video but I still got a 2 out of 8 in my test.

[@rocketop664]

@@Infinite_Beluga-qb5mv 😡

[@amsprite420]

Yes Mr mian how are ya I know you'll see this comment when we are in class just know that Aston villa is terrible 🤗

[@vibhutg1919]

i think cognito j compared us to a wallrus

[@Cognitoedu]

You’re all walruses in our eyes 💛

[@magnaitseren6188]

nice ep 69

[@brosorelatable]

lol ikr

[@maesheiloudacillo3334]

hi taga GDO:)... sheilou ni:)

[@rafii-baloch9341]

Awesome 👌🏻

[@slizniakzrenic228zrn9]

Perfetto

[@RandomGuy-yy3ng]

Who's in Mr Ngirandi's class

[@FreeTalks10]

'am from 🇪🇬

[@alexstone1074]

Who in Kroon's Class!!!!!

[@suchirgpta]

Me

[@lemonlord8356]

Hitler

[@aishie2000]

Who's kroon?

[@Cyrus_got_verified]

@@aishie2000 probably their school teacher

[@Darkknight86291]

I am Kroon

[@josephdelosreyes2213]

Nice.

[@moriimorii6261]

Exam later❤😅

[@ahmetbasaranX]

0:37 observing the light path in the lens inspired me to do that: kzbin.info/www/bejne/a6mZqnR3qM6ImaM

[@cosmocat6670]

Nice

[@miguelhaalstra7410]

i came here because of the number in the title

[@dillanpatel5061]

Ur not funny broski pattern up

[@Great_sri_lankan]

Hi guys.. anyone from royal institute?

[@italian_donut_maker7838]

Marling physics gang

[@muizHD]

BRO I CANT UNDERSTAND THIS WTH IS A FOCAL POINT

[@ElectrossHD]

the point at x from the lense

[@i.b.s-a.b.s6702]

NICE

[@HC-ff7bn]

#69

[@christels9675]

a

[@tomtrxsh4725]

69 heheh

[@firestormjupiter]

?

[@waterbased]

heheh

[@ibraheemhaque5752]

immature

[@tomtrxsh4725]

@@ibraheemhaque5752 yes, very much ibraheem.

[@null3007]

Nice

[@Work-pf6si]

2023

[@ibrahimmalik4254]

I love u have my babies

[@kittysmacks-so2nt]

Hello 9D

[@steviemurray7876]

James ew

[@ryantamehzabin4091]

2:43

[@phantonormia3790]

nice

[@jxkyclipz7036]

#69

[@null3007]

nice

[@billy8012]

#69

[@alganom]

nice