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GCSE Physics - What is Red Shift? #87
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- Опубліковано 15 сер 2024
- This video answers:
- What is red shift?
- How did we discover red shift?
- Why is space stretching
- Why is the universe expanding
- How to we know the universe is expanding
Exam board specific info:
AQA - Separate/triple science only
IGCSE Edexcel - Everything is relevant to your course!
Edexcel - Separate/triple science only
OCR 21st Century - Separate/triple science only
OCR Gateway - Separate/triple science only
Maths Playlist:
• GCSE Maths (9-1)
GCSE Chemistry playlist:
• GCSE Chemistry - Atoms...
GCSE Biology Playlist:
• Video
GCSE Physics Playlist:
• Video
'The universe ISN'T LIKELY to burst' - Very reassuring
Just saying there is a chance lol. It’s like saying there might be other life on planets in some sense
I’d rather it burst and explode then to collapse inwards and implode lol
seems a bit quicker way to go
hahaha i was shocked
@@Celeste_51no i think implosion is better unless.ur in a submarine ofcourse.. if we implode atleast we dont have to live through getting shot out into.....space?
4am, this cimment made me giggle while i was grumpy 😭😭🙏🏽🙏🏽
My name is Daniel, I'm a student studying for SPM, a must score exam in Malaysia and your GCSE videos have become my main source of revisions. I've just gone through every physics video you've posted and you're helping me more than I could ever ask for. Thank you so much, Cognito! 👏😃
I've got my last gcse exams tomorrow, thank you so much for all your videos they have been a life saver
Amadeus ur carrying me throught my GCSEs fr ♥
And so the revision ends where it all began. How poetic.
LOL
yess u guys r so underrated, ur vids has been helping me out when my teacher gave up on me :')
your teacher gave up on you?????
@@aaronrussell4608 HOW?!?!?!?!
@Timothy Kai stfu it’s obviously a scam foh
i am glad your teacher gave up on you
I get confused extremely easily when it come to physics. Therefore this really helped me understand redshift so much better now, thank you so much!
Studying for my last olevels physics exam
Ever so grateful to this channel, we shall meet again in Alevels
Insha Allah
same!
My last GCSE today, thank you for all your help!
Good luck bro
Grades???
How'd ya do bud?
I'm revising for my last physics test
@@mintahi2391 didnt ask
I heard someone explain it like this; when you hear an ambulance passing you by, you hear the sound getting lower and lower, that's essentially what's going on but visually, red is at the end of the colour spectrum so you will see it when something is moving away from you.
it really made me understand it
That is called the doppler effect and its a shame they failed to mention it in the video. I don't know which exam board cognito is following but in edexcel physics I am pretty sure that is in the circulum.
@@nevasimsek4027 it is, yes
Science Shorts?
ive just finished watching all of you videos for science and i have my last gcse tmmr! tysm u literally saved my grades
good luckk
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_9.04 - it'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
thanks for responding to my request-very quick. You are now my go to for physics videos
You gotta advertise more man. This channel is f*cking underrated.
**
I would like to start by saying I really appreciate these videos, but its a shame you didn't mention the doppler effect. we spent a quite a bit of time on how the sound waves are similar to light waves in the aspect of how as from the observes point of view the source of light/sound gets farther away the wave stretches. I am pretty sure its going to be on our end of topic test as well so it would be really appreciated if you could add that on here.
I just love the way everything you explain so easily, it helps a lot..... thank you ❤
Happy to help! 👍
thank you so much for helping out with these things that were impossible to understand☺
Omg I just have done this in my home lessons and didn’t get it at all! This came at a great time thank you so much ! Your videos are amazing 🥰🙏🏻
underated channel!! simply the best !!
I go to a decent school but this helps me understand much more. Thanks man
Stars have been pumping out photons , neutrinos and possibly more since the beginning of time. Could this have created an intergalactic “atmosphere”? As the suns light “reddens” as it passes through our atmosphere in the evenings, is it possible that the light from distant stars also reddens after passing through the galactic atmosphere? Is red shift being misinterpreted? Could it be true that the universe is not expanding at all? How could the Andromeda galaxy be approaching ours in an expanding universe?
I would love to thank you guys, for you guy's help, i successfully achieved an 8 in physics in my this 2021 January exam :)
Your revision notes helped me a lot, even before few minutes of exam, you guys are the best, love you guys ❤️❤️
Thanks Mai, that's great to hear, congratulations on your 8!! 🥳🥳
@@Cognitoedu thank you!
Thank you Cognito! I got predicted a 4 for my Physics Mock and I got a 7! Hopefully I do well on the real thing (will update)
(Edit): I got an 8!!
Update?
@@Cranberry_haley my physics exam is in two weeks and I’ll get my results in August so I’ll update then
@@annabelvanpelt ah cool! Mine is tomorrow haha T_T
@@Cranberry_haley omg good luck! I feel you 😓
@@annabelvanpelt thank you so much ^^
this guy is my saviour
i was having a hard time understanding about the spectral lines, now its clear . thanks!
The description is wrong- this content is for triple science/physics only for Edexcel IGCSE
your video about red shift is great. thanks. but there are two red shift videos and I think they are the same
this channel is the reason I'm not gonna fail
@Cognito Thanks so much, not only for the super useful video but also for the revision site, for making it free, it has helped me a lot 💕 thanks again!!
You're very welcome!
what did you say about the big bang in the first ten seconds? sounded like something to do with owls
Hi cognito, please make video on Electronic Systems
Thank you, this is so helpful !
I love you doctor frost
Ggs to anyone finishing your exams today
Amazing videos - thank you so much
our teacher sent us a loom video of 35min explaining this, you explained it 7 times better in a video 7 times less than hers :)))
=
If other galaxies are moving away from us , then we are moving away from galaxies behind us which the self are moving away from other galaxies ….. so where’s the centre of all galaxies? Since we re all moving away should not there be a galaxy which is in the middle which is not moving away from other galaxies ? We re so small 😅😂
A photon travelling in empty space must conserve its energy and maintain the wavelength unless it’s passing that energy to something. Where does that energy go?
if energy cant be created or destroyed, how did we have that matter for the big bang theory to begin with? it begs the question that how did we get that first bit of energy/matter
Its a long answer that you dont really learn until uni
Your videos are superb!! Can you make a video on detection of radioactive radiations? I have my O'levels next month..
Will you guys also do Thermionic Emission?
Dr Maurice?
Who
Why do the wavelengths of light get stretched?
Physics paper 2 tomorrow, last GCSE
Please upload circular motion I really find it difficult to understand
they already have, its titled with ''Orbits'''
Thank you so much 😭😭😭😭
THANX
Wait so where did that tiny matter come from
Bumbaclart physics tomorrow gl all
Satisfying
Tysm!!! This video is so helpful!! 😊
this helped thanks :) 1100th like exactly ;)
3:10
5:20 they tryna make the most stupid stuff make sense PLEEAZE 💀
HOW does space expand, like the Ballon expand bc we blow in it, then how does the universe does
an extremely long and complicated answer involving dark matter that you learn slightly at a level and properly at uni
but oxygen and helium are in earth's atmosphere. this means whatever happens far away from earth should redshift in the same way
if i'm reading your comment right, theoretically, yes
U didn't even get anything then smh
@@fshahnawaz wut
hi are all the physics video in this playlist applicable for caie igcse physics 0625?
yup
goat
So if the universe is expanding then why is the Andromeda galaxy moving towards us?
Live saver
i dont even take triple im only watching this because blue shift is funny half life reference
ARE U SURE THE UNIVERSE ISN'T GOING TO BURST?😅
.
the big bang theory is not necessarily the best answer to how the universe was made if you want to impress your teacher say how it was made by the fusing of separating of another universe. however, don't write this in your exam.
Just stfu
The fusing of a separated universe?
Then what made that universe that separated it doesn't sound very impressive to me
Nor does it make sense
Who els wishes they could watch the universe 🌌 explodes
anyone here from physics?
The universe will expand one day. It is correct, that will be before day of judgement.
Quran has all the information about these things.
How universe is formed is also mentioned!!
Thats exactly what i was thinking!!
who came from dr maurice?
loved it
is there going to be further explanation on astrophysics after this one, for example the relationship between orbital speed, orbital radius and time period and all?
@cognitoedu
If other galaxies are moving away from us , then we are moving away from galaxies behind us which the self are moving away from other galaxies ….. so where’s the centre of all galaxies? Since we re all moving away should not there be a galaxy which is in the middle which is not moving away from other galaxies ? We re so small 😅😂