Made all the notes possible, now onto past papers. exams tomorrow and ive had to self teach myself astrophyics. Big thanks so Zphysics if i manage to pass that exam. Good luck A level physics paper 3 2024 people!
@MT-xr5lu
2 ай бұрын
Good luck to you lad, hopefully its not like paper 2 🙏
@zhelyo_physics
2 ай бұрын
thank you so much!
@Synzoku
2 ай бұрын
good luck to you too! hope section A isnt as bad as paper 2
@fifi-ke4rj
5 күн бұрын
Hi, i am self teaching alevel physics for next year , but theres no infomation on the optional topics in the aqa textbook , just summaries and i dont have a kerboodle account ,how am i meant to to learn the topics ?, also do you just awser the optinal topic questions in the actual exam , or do you choose before the exam which optional topic your choosing, im taking my exams as a private candiate , thank you
@adz.4081
2 ай бұрын
Morning before quick one, never touched astrophysics
@zhelyo_physics
2 ай бұрын
good luck!
@hecttic8632
2 ай бұрын
Exam tomorrow and im not revising... im learning new stuff at this point.
@zhelyo_physics
2 ай бұрын
good luck! drop a comment if something doesn’t make sense.
@tschronkers4543
Жыл бұрын
Thanks for the video. Hopefully it will save me from the impending astro exam tomorrow. Cant be too hard to learn it all in one night ;)
@zhelyo_physics
Жыл бұрын
good luck, you got this!
@abrahamblackman8424
2 ай бұрын
history is always bound to repeat itself, im doing the same thing, how did it go?
@zhelyo_physics
Жыл бұрын
Edit: Typo - > Resolution of the eye should be around 500 MEGApixels! This turned out to be one of my longest videos! : ) Hope it's useful, please drop a comment if you spot any mistakes! All my revision videos: kzitem.info/door/PLSygKZqfTjPC3hJ7nRSnnXTw3tI_o67dR
@Adam-oy6nc
3 ай бұрын
@zhelyo_physics So CCDs are worse for resolution as it says they have 50 megapixels?
@lolaharwood619
2 ай бұрын
@@Adam-oy6nc yes CCDs have a lower resolution in terms of pixels but a much greater spatial resolution so tend to provide more detailed images anyway
@crystaljefferphetamine
Жыл бұрын
no way I just started this topic! thank you so much. my teacher said we're gonna finish astro by May 12th which is a very tight deadline. glad to have some extra resources so I can catch up ahead of time.
@zhelyo_physics
Жыл бұрын
Excellent timing! Drop a comment if something doesn't make sense. Hope this is useful.
@musicstockerx
Жыл бұрын
wth u finished so lat, not much time to revise for exams, literally less than two weeks. our teacher finished to course abt 2 months ago
@nicolebork3737
Жыл бұрын
Perfect timing! We are on cosmology and your earlier astro videos were very good primers for the topic
@zhelyo_physics
Жыл бұрын
Excellent! Thanks a lot for the comment!
@hinsonhau9129
Жыл бұрын
Thankyou so much for making this video! May you also kindly remind us of what values/facts we need to remember for our exams?
@zhelyo_physics
Жыл бұрын
Thanks a lot for the comment and the idea. The answer to that is not a lot luckily as there is a formula booklet provided, you only really need to know the basic GCSE formulae for KE, PE and percentage uncertainty formulas. Hope this helps!
@blitzbrawl8641
2 ай бұрын
31:12 'As I said there is a problem with absolute magnitude', should be apparent.
@sarahlim423
2 ай бұрын
39:45 why can’t we just use Wien’s constant divided by the peak wavelength? so 2.9x10^-3/400x10^-9? however this gets a value of 7250K, 1000K less than when using the method in the video. why is this? is it just because of rounding and approximate values?
@zhelyo_physics
2 ай бұрын
excellent question. The values given in the question are not very precise and when multiplied out (550 nm x 6000) give a larger constant at around 3.3 x 10^(-3) (caused by the rounding of the temperature of the Sun, I think in fact it's closer to 5500 K) You can in practice use the value of the constant and get the answer directly. I think when I made the video I forgot the value of the constant is given in your formula booklet. Hope this helps!
@user-ji8br3dl9s
Жыл бұрын
I had my physics exam in the morning, thank you for this video, it helped a lot
@zhelyo_physics
Жыл бұрын
fantastic to hear, thanks for the comment and well done!
@tytusdolowy1534
2 ай бұрын
never saw the need for the variable playback speed function... until i became a student
@davidoconnor8224
Жыл бұрын
Excellent video, clear diagrams and on point throughout, thanks!
@zhelyo_physics
Жыл бұрын
Thanks a lot for the comment! Much appreciated!
@prashansiva
Жыл бұрын
Amazing video, so helpful and cannot thank you enough
@zhelyo_physics
Жыл бұрын
Anytime! Thanks for the comment!
@saltyscoundrel4368
7 ай бұрын
Thank you very much for this, great recap!
@zhelyo_physics
7 ай бұрын
Anytime! Thanks for the comment!
@reubensharp3329
2 ай бұрын
Thanks, great informative video as usual ;)
@zhelyo_physics
2 ай бұрын
anytime, thank you for the comment!
@tonyios8284
Жыл бұрын
could you please do all of aqa turning points
@zhelyo_physics
Жыл бұрын
Coming up!
@tonyios8284
Жыл бұрын
@@zhelyo_physics your passion for physics is noticeable in your videos and it's that very passion I try to replicate when answering past paper questions and exam papers, thank you for the time and effort.
@zhelyo_physics
Жыл бұрын
Thank you so much for the motivation and the kind comment! Really appreciated, good luck with problem solving! : )
@jcbarnes
Жыл бұрын
Thanks for the video. Is there any chance you could attach the link to your notes used? Regards
@zhelyo_physics
Жыл бұрын
Hi, sorry, only the videos are available.
@hmmmmmm849
Жыл бұрын
The intensity ratio formula isnt on the formula sheet, is it required to remember it? Ive never seen it before in aqa astrophysics
@ashketchup88
Жыл бұрын
yes
@paqrazer7300
2 ай бұрын
at around 40:30 can you just not use the constant in wiens law instead of using the suns values. so 2.9x10^-3 / 400x10^-9 = 7250 K ?
@zhelyo_physics
2 ай бұрын
yes you can
@teddy200_4
Жыл бұрын
Great video as usual!
@zhelyo_physics
Жыл бұрын
Thank you so much!
@benjaminrussell7340
Жыл бұрын
thank you so much bro 😭
@zhelyo_physics
Жыл бұрын
No problem!
@yashbedi9492
Жыл бұрын
Can you do all of AQA turning points please?
@zhelyo_physics
Жыл бұрын
Coming up!
@daveyboi6675
2 ай бұрын
Paper was good tbh i forgot what quasars are but apart from that it went well
@obiomaifeanyi-agbai6260
3 ай бұрын
the telescope section looks like the GSCE AQA physics spec, is this knowledge that will be tested in an A level exam
@oscarpeters5309
2 ай бұрын
it's on the spec so it can be tested
@zhelyo_physics
2 ай бұрын
yep, could be tested
@FlamefireFlash
3 ай бұрын
hi could you u clarify how the equation for doppler shift works, i find different sources are giving different versions of the equation with the negative signs and its very confusing. For example on aqa savemyexams page it says the formula is -(deltaf)/ f = v / c but on the video its positive. Also if its blue shift how would the formula change?
@zhelyo_physics
3 ай бұрын
excellent question! It's a shame that different exam boards can use the different forms of the equation which can get confusing. All can be used with the minus sign just specifies the direction of travel. So if something is blue shifted delta lambda will change sign, e.g. the initial wavelength will be larger than the final one. If it is redshifted the final wavelength will be larger than the initial one with the magnitude of delta lambda/lambda being equal to v/c. Hope this helps!
@noorshah2038
2 ай бұрын
Thank you :)
@zhelyo_physics
2 ай бұрын
anytime, thanks for the comment!
@DepressedMusicEnjoyer
Жыл бұрын
Eye resolution is definitely not 500 pixels
@zhelyo_physics
Жыл бұрын
500 mega pixels, check the top comment : )
@jackranganathan6810
Жыл бұрын
Not sure if I’m just being stupid but at 54:30 12nm is used as the change in wavelength when I just thought that was the new wavelength measured in a red shifted galaxy. Can anyone help me on this?
@zhelyo_physics
Жыл бұрын
so delta lambda in the equation is the change in wavelength i.e. new wavelength take away the wavelength measured in the lab. Hope this helps!
@rythechosen799
Жыл бұрын
So helpful thank you very much
@rythechosen799
Жыл бұрын
also please keep making these videos they really do help :) could we get one for nuclear energy?
@zhelyo_physics
Жыл бұрын
Thanks a lot for the comment! And sure, done already - kzitem.info/news/bejne/jo2onZ2hqnlloKg Hope this is useful!
@rythechosen799
Жыл бұрын
@@zhelyo_physics legend!!!!
@Tejvir7
Жыл бұрын
which drawing software are you using
@zhelyo_physics
Жыл бұрын
just the simple whiteboard microsoft software
@Tejvir7
Жыл бұрын
@@zhelyo_physics thanks
@shanejoy7491
Жыл бұрын
is this everything we need to know for aqa astrophysics or is there a little left?
@zhelyo_physics
Жыл бұрын
should be everything but you should always check with the specification and do plenty of past papers
@videoharry_
Жыл бұрын
How has the eye got a resolution of ~500 pixels? How did people work that out?
@zhelyo_physics
Жыл бұрын
Sorry this should say 500 mega pixels!
@videoharry_
Жыл бұрын
@@zhelyo_physics thanks, I see someone else said the same thing at the same time! Sorry to keep pointing out errors - I appreciate all your videos so much they’ve saved me. And your Olympiad videos - they’re very interesting too!
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