GCSE Physics - What is Red Shift? #87

i dont even take triple im only watching this because blue shift is funny half life reference

HOW does space expand, like the Ballon expand bc we blow in it, then how does the universe does

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! 👏😃

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?

And so the revision ends where it all began. How poetic.

Who els wishes they could watch the universe 🌌 explodes

ive just finished watching all of you videos for science and i have my last gcse tmmr! tysm u literally saved my grades

Physics paper 2 tomorrow, last GCSE

hi are all the physics video in this playlist applicable for caie igcse physics 0625?

THANX

Why do the wavelengths of light get stretched?

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!!

ARE U SURE THE UNIVERSE ISN'T GOING TO BURST?😅

So if the universe is expanding then why is the Andromeda galaxy moving towards us?

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

Amazing videos - thank you so much

this channel is the reason I'm not gonna fail

this helped thanks :) 1100th like exactly ;)

@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!!