Hey Cognito, thank you for the videos! I did not understand everything until you uploaded the videos. Really appreciate it! You just got a new subscriber.
@dat-boi-aden12039 ай бұрын
You save me every time I don't understand a concept in science
@chosronu86524 жыл бұрын
people who disliked got triggered cuz they couldn't see the ultraviolet waves irl
@laisow8 ай бұрын
Ha 😑
@3laaag7 ай бұрын
LOOOOL
@Cognitoedu3 жыл бұрын
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_4.06. The platform’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
@meqa8208 Жыл бұрын
woah my teacher took literally 34 mins to explain this I was asleep while my teacher was teaching lol now I understood this for just 4 mins man you just got a new subscriber your videos are amazing
@Flora-uq1kj4 ай бұрын
Thank you so much! Really useful, and you cover every thing, make my life easier.
@hk40333 жыл бұрын
honestly love these vids theyre so organised
@Cognitoedu3 жыл бұрын
Thanks h k, glad you like them 👍
@vivek115yahoo84 жыл бұрын
such a helpful video - been struggling on this topic for a while thank you for making it so much easier!
@Cognitoedu4 жыл бұрын
You’re very welcome - cheers for for the support!
@corrupted_user2583 жыл бұрын
i struggled learning this topic until i clicked on this video... So magic is real?
@Fail-ded Жыл бұрын
It is
@thegarydosesales50433 жыл бұрын
My teacher always recommends your videos haha
@oliviaf82763 жыл бұрын
Thank you !! I have watched all your videos on waves and now finally understand hahaha
@trino52694 жыл бұрын
Hello your videos are awesome but it would be cool to have just the audio on a platform like Spotify so I can listen and do other thing at the same time thanks :)
@Cognitoedu4 жыл бұрын
Hey Trinox thanks for the support - nice suggestion and noted :) might be a little while though haha
@wolfgirl284 жыл бұрын
If you have Bluetooth headphones or a speaker you can just play it on YT while you work :) Unless you mean so you can do other things on your device, in which case I’m sorry I’m dumb
@abelblesson8863 жыл бұрын
@@wolfgirl28 very smart tbh
@a51chronos793 жыл бұрын
@@abelblesson886 true
@novokid61594 жыл бұрын
Very good video; explains a concept of oscillations and producing radiowaves that I struggled to understand before :)
@azra83004 жыл бұрын
No
@abunahiemalbisri3474 жыл бұрын
Been binge watchin ur vids
@Cognitoedu4 жыл бұрын
Aha thank you for the support! Good luck with all your work 🥳
@azra83004 жыл бұрын
Cognito why
@akjndlkahslkdjalksjd3 жыл бұрын
Didn't r3ealise a reciever was an orange ice lolly! GREAT VIDEO THOUGH HELPED A LOT
@ahmediftekhar3454 жыл бұрын
Your videos are really helpful to me😁
@ahmediftekhar3454 жыл бұрын
Could you please explain to me how radiowaves are made as it did come up in a GCSE exam question last year
@ahmediftekhar3454 жыл бұрын
Could you also make a video of conservation of energy and such laws cause i find them really confusing...making a video of them will grately benefit me... Thank you
@leonardogoncalvesjacometti48383 жыл бұрын
your videos are truly amazing, thank you
@Jess-jf9zj3 жыл бұрын
This was so helpful! Thank you!
@thetotaldramaking5427 Жыл бұрын
You are a national treasure.
@georgebaker30162 жыл бұрын
This was very helpful with my science work
@Ohum32-2 жыл бұрын
Thanks, as i am a 6th Grader I like to study Physics and this video is very helpful.
@Cognitoedu2 жыл бұрын
That's awesome 👍
@udaykabriya680110 ай бұрын
Which exam board do you cover
@mihikaomseema3 жыл бұрын
These are so so helpful! You guys deserve atleast million followers!
@Cognitoedu3 жыл бұрын
Aw thank you so much, we really appreciate it 🤩
@gaurangapatel40244 жыл бұрын
Cognito, any idea when space and cosmology will be discussed for Edexcel IGCSE and GCSE physics. Hertz-sprung Russell Diagram, Development of Stars etc..
@NandanYalla4 ай бұрын
Amazing videos... Please keep making so much more content
@noahphillips66452 жыл бұрын
Bro helped me with a science project he is a walking w
@timwhaley88103 жыл бұрын
Dude, I was just getting comfortable and ready for action and the video ended. When the radio wave is produced, can you “catch” the radio wave anywhere? That is, in a 360 degree radius? That is to say, anywhere in a sphere surrounding the radio wave source? So is the wave a spherical wave? If so, what happens to the excess energy lost? Thank you!
@nishtakasundass66694 жыл бұрын
I started to love waves after watching this.
@isabelleelliott91673 жыл бұрын
couldn’t be me
@sanusiayatullah51524 жыл бұрын
Thanks a lot. It really help
@casondave3 жыл бұрын
NIce, too bad a lot of it is not quite there ..... you'd use s frequency generator not a "scope" to generate the frequency to go out. The oscilloscope is a measurement tool usually.
@groggers3 жыл бұрын
a lot of oscilliscopes nowadays have built in signal generators, and yes while I agree it's good to be specific, this level of detail probably isn't required for the exams at GCSE
@nini-z1t5 ай бұрын
im gonna sacrifice someone for this cognito guy so he can never struggle again
@stustjohn3 жыл бұрын
That's quite a nice video... apart from the random introduction of "800" 😱 As well as being wrong information, it's also of no practical use whatsoever. Think about it: if I want to transfer a piece of information to you using a radio wave, say, 800 kHz, for example, *you* would need to know what frequency to tune your set to in order to receive my signal. But if you knew that , then the number I had "sent" would not be new information!
@stustjohn3 жыл бұрын
Having watched it again, I can see (from your diagram) what you were trying to do, but this does not come across in the script. The problem is, of course, that we don't want to start GCSE students worrying about modulation. I think that your diagram hints at it - somehow you are going to put the 800 Hz wave into/onto (modulate) the higher frequency carrier wave. Then, the person who receives the carrier wave uses their receiver to strip off the added waveform (demodulate) and examine it... This is part of the frustration of much of the modern GCSE Physics syllabus: it gets tantalisingly close to being useful/relevant but then cuts off at the point where it might make some sense! (Compare also the mind-bending use of LDRs to control lamps in potential divider circuits, all because transistors are no longer on the syllabus. There are some crazy ideas appearing in textbooks and revision guides that attempt to make sense of this, rather than accepting we have a point in the circuit where the potential rises and falls according to the light level... which we can utilise with the right device, as long as it draws negligible current.) Sorry, I'll shut up now!
@rocketfuelwithagun7 ай бұрын
@@stustjohnneek
@stustjohn7 ай бұрын
@@rocketfuelwithagun anything helpful to contribute?
@theoryandapplication7197Ай бұрын
thank you very much
@GCSEPhysicsExplained4 жыл бұрын
Great video! Keep up the content
@ophiolatreia933 жыл бұрын
So are radio waves and photons one and the same? I mean surely photons carry more than visible light?
@Harib_qb2 жыл бұрын
nice video man
@qd156 Жыл бұрын
Wow, thank you for video so great!!
@unclefrankindia Жыл бұрын
Good summary
@philipbrady76358 ай бұрын
videos are amazing
@miltoslendo31763 жыл бұрын
What is the wavelength of the very short radio waves?
@michaelsanchez48673 жыл бұрын
colors with shorter wavelength may be dispersed further like the blue color but why it is opposite with the shorter wavelength of radio waves?
@ahmediftekhar3454 жыл бұрын
Why do very short waves have to be directly transferred from transmitter to reciever? Why does an object get in tbe way?
@rhyspounder91994 жыл бұрын
1. They have to directly transfer from transmitter to receiver because they don't have much range. 2. An object gets in the way because it loses its strength because it goes A to B meaning it doesn't curve or anything it just goes straight through objects and the stronger insulator it is the more it loses its signal like going through paper wouldn't make a huge difference to most waves apart from ones with very short frequency such as gamma rays but lead will stop pretty much all waves if not bent around.
@ahmediftekhar3454 жыл бұрын
@@rhyspounder9199 you are legit a lifesaver
@ayeshasheraz673 Жыл бұрын
Why doesn't Cognito have a million subs like they legit deserve it!
@ImBobtheHampter Жыл бұрын
Yes, hedeserve it
@ImBobtheHampter Жыл бұрын
But I think if i can, i will let him have 5 million subscribe
@hmrdarkhawk8543 Жыл бұрын
Wait, dont electromagnetic/light waves travel in straight lines
@hak48002 жыл бұрын
Good job sir
@ifesjournal3 жыл бұрын
hi! would it be okay if i screenshotted some points in this video to use as flashcards? your videos are amazing. tysm, God bless x
@ME0WMERE2 жыл бұрын
Since you aren't using them for monetary gain, it's probably fine. (Although you're probably past the point where you need an answer.)
@ifesjournal2 жыл бұрын
@@ME0WMERE yeah 😭 thank you tho
@ifesjournal Жыл бұрын
@@GottaGrind lol yh i probably did 😭
@ifesjournal Жыл бұрын
@@GottaGrind yhh i finished a levels too
@user-fz2it7rq2s3 жыл бұрын
Why are radio waves used to detect so much?
@chazeegumalas6223 Жыл бұрын
what app did you use for editing?
@meganday43256 ай бұрын
is this triple ??
@jax75614 жыл бұрын
Pog very epic
@tretv61902 жыл бұрын
Quick I need five facts about radio waves!!!
@shannonlu58376 ай бұрын
3:03 RAAAAAAH SINGAPORE MENTIONED RAAAAH
@ImBobtheHampter Жыл бұрын
I watch all your waves video
@ImBobtheHampter Жыл бұрын
It's very useful
@Stefan_Dragancev2 жыл бұрын
Hello, what increases or decreases the transmission power? Voltage or amperage?
@happymck46412 жыл бұрын
why is the video so slow
@farah24284 ай бұрын
Put speed up. I watch with 1.75 or 2 times speed
@talkyoursht3 жыл бұрын
Note he didn’t mention satellite.
@groggers3 жыл бұрын
next video
@calvinmoylan8352 жыл бұрын
Hello :)
@suratunbegum7506 Жыл бұрын
I am a radio listener.
@saysum20424 жыл бұрын
5g.
@a51chronos793 жыл бұрын
6g.
@-ailyanne-70893 жыл бұрын
0:29
@ImBobtheHampter Жыл бұрын
d
@username-sb1hp2 жыл бұрын
👍
@lucasgraham73473 жыл бұрын
.
@a51chronos793 жыл бұрын
.
@Simon-xi8tb3 жыл бұрын
sorry, but this video does not explain much
@ja74062 жыл бұрын
😭😭😢😢😥😥😓😓😓😓
@ImBobtheHampter Жыл бұрын
Why are you crying?
@randymccall3042 жыл бұрын
The earth is flat
@Skibidiash7 ай бұрын
thank god for cognito
@Skibidiash7 ай бұрын
hahaha hes so good
@Skibidiash7 ай бұрын
ikr i acc learn more stuuf from him than my teachers
@stuartsdopemusicshit Жыл бұрын
education does not have to be boring. why are you trying to make this interesting thing mundane