All of WAVES in 15 mins - AS & A-level Physics

[@pepsiman4418]

quite literally in every sense of the word, life savers. Thank you

[@kumu926]

JUST WHEN I NEEDED IT THE MOST 😭😭

[@sunandmoon8858]

thank you so much this is so concise and helpful! having my as physics exam day after tomorrow, hopefully i can get an A

[@Noah-ee3sj]

Splendid video!!! But, could you also cover Malus’s Law as well?(CIE A Level Physics)

[@MustafaKhan-kk8fq]

I love you Thank you for making this topic easy af for me

[@vishthefish2246]

unlike whats shown in the video, Ive learnt many times that horizontal filters block vertical and vertical filters block horizontally orientated light, Is this wrong ?? Thanks

[@ScienceShorts]

That's what I used to think too! But it's wrong. At least, more wrong than right. In reality, polarisation is WAY more complicated and weird than this simple model. For example - which wave are we considering - the E or the M?! Put simply, the electrons in a filter/antenna must be able to oscillate if they are to absorb waves - so a vertically polarised wave will be absorbed by those in a vertical line. (This is still a mickey mouse explanation...but then even the best one is too at the end of the day). The only thing you need to know for A-level is that turning the filter 90 degrees results in a max to min intensity transmitted.

[@OWRGibbo]

legend

[@adil9606]

12:17

[@kr_adz-dk4qv]

You didn't show the derivation of the diffraction grating formula? That's a required spec point?

[@ScienceShorts]

For what board?

[@kr_adz-dk4qv]

​@@ScienceShortsAQA, check the spec it says "Derivation of dsinθ = nλ"

[@ScienceShorts]

Ah well - I've never seen a question require that in a paper. Hopefully you can make a triangle and use trig - it's easy!

[@kr_adz-dk4qv]

@@ScienceShorts yeah it's not too bad actually pretty easy learn actually. Do you think solely your revision videos and practice questions are sufficient for a high A*. Or is there any extra content/things to know when aiming for 90%+?

[@ScienceShorts]

Well, lots of my students got A*s when I taught in school, and I didn't really do anything that differently to what's in my videos! But yes, practice questions are the key.

[@yannisparis8066]

🔥🔥

[@dizvo3008]

🐐

[@thecollector9980]

FORTNITE