GCSE Physics - Reflection #62

In this video we cover:
- The three things that may happen when a wave hits the boundary between two materials
- How to draw ray diagrams, including the angle of incidence, the normal, and the angle of reflection
- That the angle of incidence is always equal to the angle of reflection
- How different boundary shapes give rise to different types of reflection
- The difference between specular reflection and diffuse (or scattered) reflection

Exam board specific info:
AQA - Separate science only. Both foundation and higher tier
IGCSE Edexcel - Relevant to all courses!
Edexcel - Separate science only. Both foundation and higher tier
OCR 21st Century - Relevant to all courses!
OCR Gateway - Separate science only. Both foundation and higher tier

GCSE Chemistry playlist:

GCSE Biology Playlist:

GCSE Physics Playlist:

[StrongMajor]

You are literally helping me in my IGCSE's bro. I love you, you are saving my life and exams. I hope you win a million dollars and sleep comfortably tonight

[huongho]

for the people who are operating this account: You are saving my GCSE scores, I am forever indebted, I hope your pillows are cold on both sides every night

[Cognitoedu]

- 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

[janaahmad]

That’s super duper good ..very awesome explanation, I’ve always found difficulty in understanding during online sessions .
THANK YOU SO MUCH FOR MAKING OUR LIVES EASIER THROUGH THIS PANDEMIC !

[assaadalganabi]

Mr congnito, my science teacher sent me a link to your video.

[kthftcj]

Wait a minute... did i just...UNDERSTAND THE TOPIC???

[inferno_aiden]

Wow! this channel is awesome!, my friend recommended this and then when i saw this whole video, i understood it so well, you guys deserve more subscribers <3, thank you so much 👌👌🙌😁

[LOLLOL-lcgb]

the website is honestly really helpful thanks!!

[Rain-ebrq]

That's way more than I could ever learn in a physics class

[JustAnchor]

I dont want science teachers I want these videos

[airbornepaddy]

This is brilliant, I have really understood this despite my dislike for Physics.

[siddhantsingh]

OH! SO U ARE THE ONLY REASON WHY MANY STUDENTS ARE NOT GOING TO SCHOOLS.

[Charlidamelio-nodx]

excellent explanation - thank you! i rlly needed this

[yarakanaan]

Your videos are what I use every time I have a test in science, especially in physics!! THANK YOU

[brookkirtland]

thank you cognito I have my mocks in 20 minutes, this video is much appreciated!

[JudyElhalaby]

bro you are a life savor im passing my exams bcz of best channel everrrr

[techiester]

The world is in great need of such teachers <3

[totallynotxen]

tbh i thought i would get a low grade at science and physics but your explanation was good thanks :D

[twicepilled]

omg i did not get ray diagrams at all before this video thank you so much😭😭

[sreshtapenugonda]

Hey Cognito! Your videos really help me out! Can you do a video on real and virtual images because I am a bit stuck on that topic :) thanks!