Waves - GCSE & A-level Physics (full version)

[@takhdirprotik2997]

How about making a video on phase angle , phase difference and path difference?? It would be great for AS students, SIR!!

[@micheepauni]

@@mssmith8923 link?

[@musk4567]

THANKYOU SOO MUCH .I FOUND WAVES SO DIFFICULT TO UNDERSTAND AND I COULD NEVER UNDERSTAND THIS TOPIC BUT HOW YOU EXPLAINED I UNDERSTOOD IT PERFECTLY.😊

[@charlieshin9868]

X1.25 speed you're welcome

[@iingardinhio6173]

Bruh, same

[@alyssaxo9659]

like if you have a physics test tomorrow and trying to learn last minute

[@mashrafisalim725]

Yessir(2)

[@lethallizard_4493]

Yeahhhhh

[@Nethmi3]

yes

[@nadiaditta4647]

thank you so much! I'm normally okay with the concepts but just need more time for things to sink in, so a video format where it's all so clear and concise and I can pause or rewind as much as needed is amazing. I'm also quite visual so the words/colours/diagrams are great - thank you!!!

[@Dugiedugdug]

Are we gonna talk about how good the diagrams were in this?

[@jacobb7379]

Bruh good point. Drawing an EM wave with both fields is not easy lol.

[@boundlessgaming6545]

youtube, study pug isnt a good ad for when we are watching videos like this.

[@aryaa7334]

Your playlist damn helped my exams. Subscribed and shared!

[@hpspspspsps5798]

Your handwriting is as good as your explanation❤

[@pix3llia]

i can't tell if this is a compliment

[@umakumaravel3878]

@@pix3llia i believe it is

[@xkl-physics7287]

9:29 so frequency is inversely proportional to wavelength ( as frequency increase, the wavelength will decrease by the same factor...

[@fatimamirza3530]

Yes

[@myxining2523]

I love his voice and yep wave too

[@dalefernandez19]

Thank you so much I was struggling with this lesson but now I understand it clearly Thank you so much😄🙏

[@Inertia_ow]

11:55 I thought that the filters Blocked waves with the same orientation, as the waves are then able to transfer their energy into the filter as they oscillate in the same orientation. Rather than filters of the opposite orientation preventing the wave from going through. At least this is what my teacher taught us. I hope I've explained this well.

[@aysha6407]

Wow I actually understand everything 😁

[@ciaranquigley763]

Great video I missed my class on this and have an exam tomorrow feel confident after this video thank you :)

[@sembaeff]

Thank you very much! Very useful and great videos! Just keep doing them, you are the best at it!

[@melnoctis6402]

You SIR, are a legend

[@sashihanoomanjee2883]

But how can when someone is in middle in the lagoon, the waves carry him to the seashore?So he should be moving up and down in the lagoon??

[@theduckster1804]

That's the current not the waves, that's a force and forces move things

[@Nethmi3]

i just realised i already subscribed you. i was gonna subscribe you again. lol your videos are that great ....lol

[@norifirstlove]

you saved me... I really thought I was gonna fail physics

[@anandupadhyaya6809]

You are a lifesaver. You explained it so much good.

[@بنتأنصار-ح4ذ]

In chemistry it says a substance dissolves depending on how POLARISED it is> What does this mean??????

[@ScienceShorts]

That's something completely different - that's all about how positive and negative the ends of molecules can be.

[@بنتأنصار-ح4ذ]

@@ScienceShorts ohhhh i see that explains a lot. Thank you so much - also how do u advise revising for GCSE physics? I have made all my notes and i am now doing grade 8/9 booster questions and topical exam questions as well as memorising mark schemes. Is this the right way?

[@ScienceShorts]

Past papers, past papers, past papers.

[@بنتأنصار-ح4ذ]

ok thank uu!! even for the new specification?

[@maanasperumalla7737]

0:45 If the water is only moving up and down why is it seen that it comes onto the shore? And we also move when the wave hits us. The water particles, the matter, is moving. It would be nice if you could clarify this

[@amanamin3685]

So the energy is carried by waves right as their primary function correct. So eventually they will start from one point and take energy to another So u can think of it as at the end of the medium that is the water. Some of the energy of the wave is converted to kinetic energy of water particles, and also sound is produced if u are on a beach isn't it.

[@Elitea20]

Phase and path diff?

[@faisalsahak7330]

thank you soo much sir

[@rayanaltowayan9558]

great video , do you have videos for all of AS physics ?

[@chrisdenison3273]

If you add a third polarised filter at 45 degrees to two filters (one at 0 deg, the other at 90 deg) wouldn't the light then be able to pass through again? I read something about how light "forgets" the previous polarisation and acts as if it hasn't been polarised in the first direction.

[@ScienceShorts]

Wouldn't surprise me. Polarisation is way more complex than the model we use at A-level.

[@chrisdenison3273]

I'll stick to the model for A-level rather than burning a hole through the paper at the exam then.

[@chrisdenison3273]

Love your videos by the way, been super helpful!! Thank you!

[@liamhughes9445]

Please do a video on Electricity

[@liamhughes9445]

Gravitational, Electric and Magnetic Fields would be nice too.

[@daniel8763]

Are you from st Marys?

[@musicwithtouka3617]

imagine having great physics knowledge and art skills 😂

[@timothychinye6008]

I can't.

[@careenwasonga]

I still need more explanation on polarization

[@erykmocniak526]

9:08 300 million not 300 thousand

[@umaisnaveed5527]

Maybe he meant to say 300 thousand km/s.

[@coconutboo4868]

This was so helpful thank you💜

[@krishak8329]

please do one on telecommunication

[@annak3561]

9:49 - polarisation :D

[@neuropcs5879]

Another great video!

[@jefflarry4944]

11:44 I don't this this is correct for all types of waves. We did an experiment with polarised Microwaves, and if they were oscillating vertically and the bars were also vertical, then the Microwaves were stopped. If the bars were changed to horizontal then the Microwaves passed through. It was explained as follows: The bars were made of metal, and so when the Microwaves hit the vertical bars they start oscillating the particles in the bars themselves and the Microwaves are absorbed and then re-emitted by the particles in all directions. If the bars are horizontal, then the Microwaves pass straight through the bars and into the detector. We tried this same experiment with a wooden set of bars and the explanation was upheld. But of course I have seen and played around with the polarised film where it blocks all light if you rotate them at 90 degrees. Now I'm not sure what to think.

[@KinoDa1]

You are right he said wrong info check your textbook

[@KinoDa1]

Good luck with the exam tomorrow btw

[@jefflarry4944]

@@KinoDa1 Thanks, but I'm doing OCR, so mine's not 'til next year. Good luck to you though!

[@jefflarry4944]

@@KinoDa1 My textbook got it wrong as well - It's really confusing.

[@lukewivell3745]

Great video, but if the grating has bars in line with direction of his then they would be blocked, they would pass through a perpendicular grating, it is the other way around in this video, scientifically am I wrong? Polarised waves are formed when bars in line with oscillations absorb that axis of oscillation, I believe you have drawn with transmission axis but said that they are the actual bars.

[@lukewivell3745]

and again this is in the sunglass example at the end

[@ScienceShorts]

Yep, you got me. I use the picket fence model here for simplicity...not accuracy ;)

[@chloehodson1022]

Which A Level spec are these videos for please? I'm doing AQA

[@ScienceShorts]

+Chloe Hodson Same! :)

[@joelramos3077]

Chloè H I think it’s aqa I do it as well

[@Suraj-so3ge]

Is this similar to OCR A

[@blazejoshua3932]

Thanks really appreciate it

[@panyida]

thanks a lot

[@maanasperumalla7737]

14:00 So the horizontal light being polarized is the B(magnetic field)?

[@maishaislam8275]

Could you explain pulse echo mechanism as well?

[@floralynphea3400]

Thank you for the awesome video :D

[@taxaviebro6411]

Why can't the vertical waves be reflected off the surface of the road?

[@rusticrevivalists]

its the fact that he writes on paper and not whiteboard for me

[@teamcori]

Thank you :D

[@ebineshs]

Why only horizontal waves are reflected from the road

[@WitWikii]

Thanks.

[@snowycrystalz101]

Hi Sir, great video thank you. Just thought I'd point out that at around 9:09 you say that 3x10e8 ms-1 is 300 thousand ms-1. Don't you mean 300 thousand kms-1 or 300 million ms-1?

[@AK-ff4gv]

Legend

[@siyeonsdreamcatcher]

Can someone explain to me if polarised light is the waves being stopped or the waves passing through the filter 😅

[@danieldavies2550]

speed of em waves are 300 million metres per second, not 300 thousand. Otherwise, this video is excellent :).

[@ScienceShorts]

Yup, I meant km per sec. Oops!

[@miesht430]

Hi sir, Would these be useful for edexcel? thanks

[@tinniesealjiji]

Yes

[@b_nzx7841]

1.25x speed.

[@psionicballer3766]

XD did the same thing

[@betul-ev2fu]

2x speed :)

[@demetriusdemarcusbartholom8063]

How come this video has 4 dislikes? 😫😫😫

[@mahiatshan3129]

;o

[@curlyuus_1516]

So if glasses were polarised both ways, we wouldn't be able to see through?

[@ScienceShorts]

+Bhavish Correct!

[@curlyuus_1516]

Hey I once actually tried it in a shop to ensure the glasses were actual polaroid ones and it was like amazing 😂 But there was one thing I couldn't get. The owners had a photo, a part of which could only be see while wearing the glasses...what's that?

[@I3uzzzzzz]

black magic

[@yeetus_maximus]

@@curlyuus_1516 The way we see things is only when light reflects off of an object and onto our retina. The polaroid glasses block the light reflecting from that specific part of the photo, and you cant see it. At least this is the most basic principle behind it.

[@curlyuus_1516]

@@I3uzzzzzz yeah right 😂

[@quoteable298]

Could you send me the link to the thermal physics chapter please. thank you sir

[@tanishka7470]

can you please make one on the motors and all in electricity please

[@hadiatariq1457]

I pass my physics exams because if you only. a very humble request if u could please change ur marker that sound is a little irritating.

[@lowrigoldby4390]

what exam board do you teach?

[@pahcreates378]

Could you do a video on malus law?

[@cmango101]

What exam board is this for? OCR A?

[@adityaraj9137]

so helpful!!!

[@Arwk709]

9:09 *300 million m/s*

[@fatimasaid648]

Am I studying last minute even though I know I’m going to fail? Yes I am

[@2eioia]

Me rn. How did your exam go?

[@fatimasaid648]

@@2eioia the entire class did terrible we all failed, but it’s okay because it was a practice exam before the real exam and due to COVID we won’t be having the real exam anymore

[@fatimasaid648]

@@2eioia how did your exam go?

[@2eioia]

@@fatimasaid648 It’s okay. The online studying wasn’t the best thing and so focusing was not so easy so don’t be harsh on yourself🥺 And oh yes. Exams have been cancelled and i think it is kind of a relief. We are now able to score marks by mock and homeworks which is not bad ig. My test was quite good. Even though i suck at physics. I was able to answer a good couple questions but at the end i lost track hahaha😂

[@fatimasaid648]

@@2eioia well done with you exam hope you done good. When I was doing my exam It was during when college was open

[@superbgcool]

EM waves actually travel at 300,000 km/s.

[@ScienceShorts]

+Berend Timmer What did I say?

[@superbgcool]

You said 3x10^8 metres and then 300,000 m/s, just a small hiccup I think, thanks for the video anyways!

[@umakumaravel3878]

is light plane polarised?

[@merp7996]

Your Worst nightmare is polarisation included in gcse?

[@ridhwana2331]

Amazing video, my friend kashan star have a crush on u

[@maryambsq]

Tff??😂😂

[@jian-hongye9628]

Sir does your videos cover the CIE syllabus por Physics 9702?

[@MrEP1Cman]

these videos cover the british AQA specification for physics I'm afraid

[@ScienceShorts]

A lot of the CIE syllabus is covered, but not all of it, like Doppler Effect, gain/attenuation, and more. Always check your spec.

[@asfahsabrie6207]

@@ScienceShorts plzz can u try covering the CIE topics that u have not covered wuld have appreciated so much. Nice videos tho.

[@_nom_]

2 types of waves, and then he lists a whole bunch.

[@user-bz5fn4pu2v]

Is that seriously A-level just saying that would be national 5 here.

[@declancutler7225]

This is a basic introduction with GCSE terms

[@joshvir262]

no.7

[@ScienceShorts]

Mate, please stop spamming.

[@oliverdixon9747]

Science “shorts” - 15 minute video haha

[@shahtayyib]

better than 4 lessons

[@UmMe-gm2ci]

🥇🥇🥇🎯

[@RB-jd3yb]

thank you daddy

[@xuan420]

what am i doing here lol im in 6th grade

[@taneernouman3894]

adopt me pls