Understanding Electromagnetic Radiation! | ICT #5

[@SabinCivil]

Please extend your support at www.patreon.com/LearnEngineering

[@power-max]

Minor corrections: There is no such thing as "high voltage current," it's better to say something to the tune of "The application of a high voltage results in sudden dielectric breakdown of the air resulting in a strong impulse response or electrical snap." Maximum power transfer theorem states Zl = **Zg, or the *CONJUGATE* of the impedance, not equal. this allows the maximum use of electrical "whiplash" at the resonant frequency.

[@power-max]

@@AK2I47 I doubt they care about a 0.0046% difference in subscriber count. Variation through the day for this channel is around 10 or so more than likely. You don't have much leverage here lol

[@omkarpatil7022]

Please, make video on gyroscope....

[@charlesbrightman4237]

@@ahmdabdallah2132 Too bad God does not actually exist except for as a concept in the human mind. Unless you have any actual evidence of God's actual existence. For those who claim God exists, consider the following: a. An actual eternally existent absolute somethingness truly existing. b. An actual eternally existent absolute somethingness that has consciousness, memories and thoughts truly existing. People who claim God actually and eternally exists basically are claiming that 'b' above is correct but yet simultaneously seem to be saying that 'a' is impossible to occur. 'a' above can exist without 'b' existing but 'b' cannot exist unless 'a' exists. I am one step away from proving God's existence, but am unable to find any actual evidence to do so. And nobody I've talked to seems to have any actual evidence of God's actual existence either. Hence, at this time in the analysis, God does not actually exist except for as a concept created by humans for humans. Humans have personified Nature and called that personification "God". * People who make super natural claims, the onus is upon them to prove their claims. They are certainly free to believe whatever they want to believe, and others are certainly free to believe whatever they want to believe. Via a lengthy analysis I currently believe that people who believe in God are delusional and are believing in fairy tales as if those fairy tales were really true. And if they couldn't prove otherwise, then they couldn't prove otherwise. They have been brainwashed well. KUDOS to those who brainwashed them. * So again, I ask where is any actual evidence, any actual evidence at all, that God actually factually exists?

[@einselkampfer4387]

@@power-max thanks, known you any source that I can reading about this theme?

[@AdamBechtol]

Can't say I've fully grasped it, but glad this video exists.

[@chaitaligaikar811]

From which physics book... ??

[@vilas8240]

Obviously

[@vilas8240]

@@chaitaligaikar811 he is master degree in nphysics

[@slamboum6485]

@@martinkuliza why the field lines are detached from each other at the meet point

[@slamboum6485]

@@martinkuliza you said the radiation is resulted because the fields line are detached at the mean point. My question is why they are separated means how and why the energy is radiated.

[@Alex_science]

I am a telecom engineer and this is the most clear and understadable explanation I have seen. Great. Congratulations.

[@outsideworld76]

True, but then again I'm also an engineer xD I used to see these diagrams in textbooks and had to do the animation in my head. Maybe that's why this example is so clear to us engineers?

[@bobymox]

Can you please explain,what particules are positive becouse electron is negative,so what is a plus charge,thanks!

[@bobymox]

@@martinkuliza I ask because when they talk about electricity they only talk about electrons!Thanks!

[@deegee3142]

@@martinkuliza sorry, do you mean Layman/Laymen?

[@deegee3142]

@@martinkuliza sorry no offense intended.

[@alexanderquilty5705]

After watching this the bajillionth time, and 3 years of physics, i’m really starting to grasp this! Thank you for this visual! I don’t know why none of my textbooks ever even discuss kinks and what they would look like!

[@E-Kat]

That’s very depressing to hear this as I was hoping to get something out of this. Have you done any hands on experiments while a child, like making a crystal radio ? When I was 5 years old, I had pockets full of radio valves, pieces of bakelite boards and copper wire coils as this was so fascinating! I had huge pockets!😂 I want to really understand how we generate phone signals, so I can visualise it the same way I can visualise a mechanical device. I get so frustrated when I can’t do that.

[@forloop7713]

@@E-Kat where do you work now

[@E-Kat]

@@forloop7713 I used to work in pathology but I also used to make electronic robots as a educational toy for children. I did several other things too.

[@b.s.3645]

@@E-Kat Weird conincidence: There is this book I recently read, its awesome and it kinda even explains how microphones work. "How technology works" from the known "DK" company. The cover is a white background with 2 blue gears. Its good for its price and I can only advice to anyone. However, the reason Im telling you this is because I always dreamed of building a plane engine, after reading ab its funtions often enough + a bit of inspiration, I finally dared (and successed) to build one out of old food cans. Btw Im studying to become a medical engineer rn, when I built the engine I was studying medical physics, so please never say "its not my job".

[@VideosViraisVirais-dc7nx]

​@@b.s.3645are you working as a medical engineer? Case you don't answer, I will understand your silence as a "No".

[@favesongslist]

I am an ex electronics design engineer and this is the most brilliantly clear, non mathematical, non quantum yet lucid explanation I have had the privilege to watch. Congratulations.

[@aamae6089]

Could you please suggest a book explains the application of quantum in electronics or gives a quantum explanation for such topics.

[@bili4591]

@@aamae6089 go look Arvin ash, Sabine hossenfolder -> what’s quantum

[@ultrameticulous]

Concur. This video was fantastic. The animations, verbal explanations, and concepts chosen to be conveyed.

[@karthiksathyanarayanan5271]

I must say, this brought a smile on my face to see how beautifully you have explained this stuff. Teaching and learning this stuff has always been a challenge for engineers.

[@rishabhshuriya2668]

hey karthik dude please can you help me out , i am thinking to make this project for science exhibition in my school , where could i get the required items from?

[@DF-cl5bm]

This has to be the best explanation I've seen of wave propagation! I actually understood the mechanism by which the propagation of the wave occurs. Well done!

[@jomama3804]

DF and next.... I will take over the world...... bwaaaahaaahaahaa

[@DF-cl5bm]

@@jomama3804 If that's what melts your butter

[@hemanthguruvelli8723]

Thank you for this amazing video. Can you pls make a video on design of feed horns to meet the impedance matching criteria for a given antenna?

[@skgupta563]

Can you explain how it's sinusoidal I didn't get that part.

[@carpathianhermit7228]

Arent u so full of yourself. The almighty you had to let him know he was correct, ur cute

[@FahimKhan-vd8yp]

you've taught me what my undergrad microwave course failed to teach. thank you! back then, my teacher and fellow students just cared about maths behind these amazing insights. all they cared about exams. i feel sad that this video was not released back then( around 2 years back) . math always gets interesting in engineering when you actually get to know what actually you are calculating. engineering is a beautiful thing to learn and to practice, but, one or two careless teachers- it can sure be hell.

[@cryptoinside8814]

I am a EE from U.C.Berkeley and I never understood the fundamentals, but just memorizing and doing the complicated math for exams. KZbin University beats all these overly complicated courses in colleges that don't teach the fundamentals.

[@ddtrahan]

I have an Engr Degree & Master Electrician - this video covered 2 Electrical Engr classes rather quickly! Good luck.

[@LaplacesDemon11]

If it covered 4 semesters of engineering classes then you don’t have an engineering degree😂

[@ddtrahan]

@@LaplacesDemon11 Petroleum Engineering ULL 2012 w/ Honors! Which do you have?

[@LaplacesDemon11]

Electrical engineering university of Michigan. If your degree is in petroleum engineering then you have maybe had one class on this topic. Let alone two years😂 Maybe you meant to say it covered 2 years of your master electrician education?

[@ddtrahan]

@@LaplacesDemon11 yes, in Engr it was covered in Electrical Theory!

[@vaakdemandante8772]

It's incredible. Time and time again I came to this video from various sources and always watch it from the beginning to the end, regardless of the fact I already understand what it conveys. This is such a fundamental and well explained video it should be a mandatory part of any course on electromagnetism.

[@JossinJax]

I am stunned at how much I learned in under eight minutes; this pretty much neatly sums up both an intricate and cursory look over all of Uni's second year physics.

[@lennartweber2228]

Imagine what u i was like if the profs where not just some reknown dudes, who reasearxhed a lot in the field, but actual teachers with experience not only in the field but experience IN TEACHING. Universities greatest flaw is, that they are still stuck in the ways of the middle age, concerning teaching.

[@MrHichammohsen1]

Nice video. Note that the electromagnetic wave does not move in a sinusoidal 2D wave, but in a circular 3D motion that translates into 2D waves when we detect them because we are only measuring on point in space.

[@LaughingInfidel]

This level of explanation isn't easy to find. I've wondered about this for years and finally decided to find a real explanation. It took over 2 hours of wading through irrelevant, simple stuff to find this. The idea that accelerating charges create kinks in their fields that propagate out at the speed of light was a real light bulb moment for me. Thank you.

[@scottjacobsen4961]

I design mobile cellular antennas as part of my job. I thought the video was a great depiction, showing the propagating mode(s) as a kink, but I should clarify that antenna designers for cell phones don’t use halfwave dipoles. Rather, we use a random geometry of antenna traces to transfer energy from the board to near fields and hope that in the mess of fields surrounding the cellphone, some form of propagating modes also arise. A little shared secret among antenna engineers is that we don’t have a clue how our antenna actually work as it’s impossible to decompose fields into their constituent components using full wave simulators. We can only look at the aggregate fields. With a dipole, it’s easy to analyze and the modes pop out of the math.

[@kerrygallagher5254]

Please can you help me, I need to get evidence for police investigation as I am currently being targeted by gang stalkers who are using RFMF,I believe that they are also microchiping me n my partner,I need to have something to take to the police,they are torturing me and I have aged 20yrs in 2yrs,PLEASE HELP I AIN'T A CLUE WHAT, HOW,I KNOW WHY,THEY ARE TRYING TO MAKE MY PARTNER SIGN HIS PROPERTY OVER TO THEM I am not a nut job/crank I am not sure what I can do about this but this is my last try to get help or advice about this

[@arvoitus4649]

Additionally, many older technologies using lower frequencies utilized quarterwave antennae due to the size of the wave (imagine AM radio in the kilohertz spectrum). You would have a hard time attaching a halfwave antenna to an automobile.

[@danielshade710]

I would say the greatest acceleration was regarding my lack of understanding of the information presented in this video. I was good for like the first minute or two. By the end I was approaching the speed of light of misunderstanding. My mass also increased, of course, to the understanding that 11 locomotives have.

[@Gengh13]

The impedance matching mentioned is only correct for purely resistive loads without an imaginary component (provided by reactive components such as capacitors and inductors). Maximum transference of power is achieved when the load impedance is the conjugate(Z*) of the source impedance(Z).

[@PrateekJain21994]

I am a telecom engineer and i think this covers alot of important topics though brief! Very resourceful. And damn someone studies this in highschool! Wow

[@Bllctn]

I agree with @DF "This has to be the best explanation I've seen of wave propagation! I actually understood the mechanism by which the propagation of the wave occurs. Well done!"

[@rishinigam9070]

Electromagnetic radiation have various similarities in formula of open medium and transmission line ..

[@TheYeeshkul]

Just a few notes :) Hertz's experiment: It wasn't the spark that transmitted the wave (Edit: the spark itself will / is able to emit an EM wave though). The spark merely triggers the dipole oscillation. He used a massive DC voltage surge released into an oscillator (or without it) and then to a tuned dipole arrangement with a spark gap. The spark fluctuates, behaving also kind of like AC, that's why it worked even without the oscillator. The dipole then produces a dying wave, not a continuous wave. The wave is emitted by the whole dipole, not by the spark in the middle of it. Herz created the first dipole arrangement by pulling a capacitor electrodes far apart (the balls). The emitted wave was received on a loop that really was another LC resonator (L was represented by the loop or square of certain diameter and C was represented by the gap). 6:50 if the impedance of the power source/cables doesn't match the dipole input impedance, the power is reflected right on the transition point between them. This looks like it is reflected on the dipole itself. I really liked the portion of the video, where you explain how the EM field leaves the conductor.

[@icommentio]

"the spark fluctuates, behaving also kind of like AC, that's why it worked even without the oscillator." it does not fluctuate . it just lives for some time. say 100 microseconds. and the natural frequency was 100 MHz. so the oscillations are between the spheres (a capacitor) connected by a piece of wire (an inductor)

[@TheYeeshkul]

@@icommentio The current between the gap electrodes is not clean DC, it is "hairy". That is what is needed to emit a wave. I guess this is a complex problem where the spark gap, which is able to emit a wave itself, feeds an oscillator that will make the wave go longer and be cleaner in shape.

[@amrikbhathal408]

What education/experience did you guys have to gain sutch an understanding on the topic? Just curious.

[@ChristIsMyLordnSavior]

Who else loves physics 👍🏻

[@MirMdNasif]

I love cats who love physics

[@sandasturner9529]

I do!!! 😁

[@kokitelee]

This is science 💀

[@RealDallasFed]

I don't love this pseudoscience they are calling physics.

[@principalgccmurree5904]

​@@kokitelee I guess bro think that physics is considered in arts 💀💀

[@drury2d8]

i always knew that electromagnetic waves were kinky.

[@linawang88]

lol

[@jryde421]

My pornhub search history.

[@alvinxyz7419]

Kink

[@lordx4641]

Yes they r yet to be understood

[@jazzymatt77]

So these kinks are caused by an increase or decrease in the electric field, so its like a tsunamis in the electrical sphere? So that would be "interference"?

[@sumitraturi7791]

It was really deep and covered all the stuff that i read just a week before. Bless youtube algorithm

[@Apmarshman]

Unreal amount of information here. KZbin is better than college to be really honest with ya. In fact my professors put on a lot of youtube videos just like this one in class. Thank you!

[@Logan-qi4nx]

I'm just trying to learn about electromagnetic radiation for an earth science class, this really is an endless rabbithole!

[@MichaelQuantum]

It really is. Just as you start to answer one question, the answers you get start to pull strings, revealing 10 more questions. You go tumbling down the rabbit hole of some of the universe's deepest secrets and fundamental workings.

[@sailingfabule1805]

In reality and once that you understand EM it boils down to just a handful of concepts that you really ned to understand. But this is after 30 years of practice and a PhD. Good luck in your studies.

[@lordemed1]

Hertz was a freakin' genius. He died at age 36, likely from a brain tumor brought on by his experiments....who knows what he would have discovered if he had lived longer

[@arnesaknussemm2427]

Had he lived, he may have discovered that the radio waves he accidentally discovered were actually really useful. He also ‘discovered’ the photoelectric effect but didn’t really realise it.

[@imperson1785]

Well for one, he would've discovered some of his experiments were giving him tumors

[@ericscaillet2232]

@@imperson1785 sadly no protective measure in place when you are the pioner.

[@cododerdritte39]

"likely from a brain tumor brought on by his experiments..." Nope. en.wikipedia.org/wiki/Granulomatosis_with_polyangiitis Of course, it's very tragic that he died so young :(

[@Itsmealekhya]

Yes..By stealing ideas from an Indian scientists they become genious..And by stealing wealth they become rich and progressive as a country.. AJC Bose discovered electro magnetism..Not Hertz..

[@chander.261]

how can something so informative be so underrated

[@atharshm5781]

people dont wanna know stuff !

[@maythesciencebewithyou]

I think you don't know the meaning of the word underrated. This video has currently 2.35 million views and 63.4 k likes. That's very impressive for a scientific video which actually explains something rather than being sciencetainment.

[@ericscaillet2232]

@@maythesciencebewithyou nice new word.

[@rorytheo]

Awesome explanation! I've been seeking for this my whole life!!

[@hamidbluri3135]

your whole life?!?!

[@jasonlast7091]

Would have been nice to have this video back in high school physics.

[@spacecat3198]

I'll probably have to rewatch a few times to get this into my adhd brain. But I get a lot of this visually. Thanks.

[@satishgoda]

Wow! My impedance mismatch has been corrected by your audio visual signal. Thank you so much.

[@romanrakhmanov4811]

Amazing video. Pretty dense portion of essential information thank you! I apologize,but four mathematical equations were derived by Heaviside.maxwell had around 20 equations,that does not diminish maxwells work ,but gives some credit to a person who made them “usable “

[@erockromulan9329]

This is why I'm a mechanical engineer.

[@Flatgod]

Many people out there tend to think that mech is even harder with all of the thermo and fluid requirements.

[@LamiaNayrin]

I am studying mechanical, confused which sector i should build in my career 😢

[@rotate85]

Electrons in the dipole antenna doesn't actually move along the wire as shown in the diagram since electrons move very slowly (few cm/s). What's really happening in the conductor is much more complicated as it's a superposition of all the electrical field produced by the accelerating electrons. It's not something that can be appreciated intuitively, however this animation provides a good enough explanation.

[@mibrahim4245]

I have couple of questions if you don't mind .. The first: how do kinks move at the speed of light, while their cause "the charge acceleration" moves in a speed much less than the lightspeed ? how do they move faster than the thing that created them ....

[@rotate85]

@@mibrahim4245 Hi, sorry for the late reply but I only saw this now. Kink isn't a thing on it's own. It's just an imaginary line that connects the point in space that have the same electrical field strength. Kink isn't something that moves, although the animation shows this. This is because the electrical field is mediated to all the space around by a virtual photon which does travel all the speed of light. What it trying to demonstrate is that when the charged particle accelerates, the electrical field is updated to the space at the speed of light.

[@mibrahim4245]

@@rotate85 Thank you for the reply .. I'm very interested about this particular detail and I'd like to "digest it" so plz bear with me .. now the charge has accelerated.. and the information about the electric field strength updates with lightspeed.. so why if it is so fast.. why would it have a problem (creates kinks) when the charge accelerates (but not when its stationary or with constant speed).. whats the difference if in all cases the information would update very quickly.. and he said "the space near the charge would update normally, but the space 'away' from it would have kinks .. so again, why does it happen if this update is so fast ... the second question is about propagation.. I saw in other books that it happens because the E field creates B field, and that B field creates E field .. and so on .. so is that the why ? this detaching energy as in this animation was not very convincing for me ... Thanks in adavnce ..

[@Gary-ts6dh]

This has to be one of the absolute simplest explanations of electromagnetic radiation I've seen. Thanks.

[@dmmominul]

Hello Learn engineering, I am a Electronics and Communications Engineering departmental student and this is the most clear and understandable explanation I have seen. This video is very fine. I pay salute to the teacher like you. Great. Congratulations.

[@mbalentine781]

Maxwell's original equations were a set of 20 equations. Oliver Heaviside (brilliant, self taught) had the insight to unify and reduce to the four we know today.

[@softwarerevolutions]

Heaviside's one paper also kicked of Relativity picked up by Einstein later. Cheers to all Electrical Engineers in the house!

[@tomshaa391]

Electron is a sphérical stationnary wave fonction, use the wave model of Gabriel Lafreniere, it work good.

[@KoltPenny]

One thing I never understood is, are these signals tubular? are they spherical? How are we able to receive signals from above and from below the antenna?

[@benb737]

From what I’ve heard they behave a lot like visible light coming from a torch, which can be focused into a tubular beam or spread out and scattered everywhere

[@gilldanier4129]

Everything is a wave, a wave is formed in its own material, therefore if electricity is radiated as a wave, then that wave must be formed in electricity that is around us. Just like a radio signal is received using a capacitor to tune it, power can be radiated as a wave and then recieved when tuned to it's own frequency. We exist in an ocean of energy, even space. Tesla was proving this, unfortunately he was fighting against greed.

[@stratonikisporcia8630]

Well it behaves EXACTLY like visible light, as visible light IS an EM radiation

[@Roelypopper]

Maybe by now you already know the answer but the radiation from a dipole has a donut like pattern. It only radiates to the side, not up and down. This is why you will always see broadcast antennas oriented vertically, because we want the radiated power going towards users, not into space or straight into the ground.

[@rjy8960]

I've been interested in radio comms for almost 50 years. I have a grasp of antenna theory but I did NOT understand about the change in velocity of the electric charge creating kinks due to the limitation of the speed of light which in turn creates the EM radiation. Really well explained - thank you!

[@christofferds]

Awesome... my extremely well payed professors in Brazil could not earn so much, since this guy outgame them in every aspect of the teaching phenomena.

[@hrshtdb]

I am in class 12 but I was also able to understand it ..thanks for this superb explanation ❤️

[@rishabhshuriya2668]

hey harshit dude please can you help me out , i am thinking to make this project for science exhibition in my school , where could i get the required items from?

[@Barty.Crowell]

This explained everything better than any amateur radio licence manual ever could

[@famfo516]

I'm more confused than I was before watching this video, lol, when trying to grasp/match this with quantum mechanics my brain melts, but for some weird reason, I like it... Honestly, I think the only good way to try to understand this is doing the math, trying to formulate this through regular language is probably not only difficult but also not ideal.

[@softwarerevolutions]

OMG People like you surprise me. That's not a problem though, I can tell that you come from a math background with a distaste for physics and those people are in a minority.

[@anonymousguy7754]

The best explanation I have ever seen in KZbin😮

[@snekooei]

Billions of thanks The best explanation of how radio waves are produced. Especially the kink ....

[@jeffclark2675]

I have a BSEE degree which included multiple high level calculus-based classes in electromagnetic fields. this video explained the concepts better than all of those classed combined! Bravo to the developers of this video! A few questions below. At 2:19 the kink is said to move or radiate outwards at the speed of light, seemingly implying that this was the EM wave. But then the kink is shown as occurring at 3:37. This is before the two charges (and the fields between them) later meet and the EM wave is transmitted . Is this the difference between a photon and a wave (a collection of photons)? Do both actually occur? In other words, at 2:19 when the kink is formed, does this produce a photon(s) reconciling the kink from a single charge later followed by the transmission of the whole wave occurring when multiple photons collide from the multiple charges meeting? What is the blob of objects at 1:39? I am assuming it is the "charge" mentioned just previously? If so, is the blue dot that emits from it at the speed of light (referred to as "the information") a photon? Where does the photon get the energy to emit outward at the speed of light? Is it from the energy that must have been present to cause the acceleration of the charge? Or does it not need energy to accelerate because it is massless? If it is massless, why is it depicted as having a negative charge at 1:46? Why does "the field near the charge" need to "communicate" the "information" to the "field further away" at all? this implies that the fields have some intelligence and use the "information" to adjust their fields to reconcile the delta. Would it be advisable to omit this in favor of the really insightful bit about the delta being reconciled to prevent a discontinuation (correct the disturbance) between the two fields? (a disturbance in the time/space continuum). Can we also think of this as an energy problem? Could we say (from Newton's second law) that the change in speed, or acceleration, requires a force, which increases the energy state of the moving charge? Could we further way that the photon is emitted to release energy and establish equilibrium (from a conservation of energy perspective)? If the entire universe consisted of a single positively charge particle, would that positive charge have an electric field?

[@otc-x1-b9]

Wow.

[@leejamestheliar2085]

Wish " they " would have had this when I went to electronics school. Very succinct.

[@xTheUnknownAnimator]

Perfect! Very informative, it helped me understand the underlying concepts behind the mathematical description presented in my lectures :)

[@Ali-ew7hm]

This is one of the most useful physics video I’ve ever watched. Really great job

[@murali7009]

wow..amazing animation. Very easy to understand. Thank you developers..💐💐🙏🙏

[@Supernumerary]

The animations are fantastic, the best I’ve ever seen. Please keep in mind that none of the original authorities postulated existence of electron particle. Only the electron wave. What is misconstrued as a particle is most likely a node or singularity. We cannot hope to advance understanding if we hold to this concept that everything is created from smaller & smaller particles, i.e. quanta. Example, the reason that electromagnetic waves and light both travel at the same speed is because light is an electromagnetic wave. There is no light particle. Light slows down when passing thru a prism because it’s an electromagnetic wave, not a stream of particles. There are no dualities in nature. Wave-particle duality concept is a misdirection. Perhaps deliberate.

[@AjinkyaMahajan]

The video clarifies my concept about the memory effect of kinks. Thanks for sharing a wonderful content ✨✨🍀✌

[@De_Bonis_Antonio]

Memory effect?! Oh! My God. Conspiracy people and others non scientific educated people use scientific concepts to make up their own silly ideas.

[@FrancisLiu]

My brain can't take this waking up 3 am for work, now it's 6 am lol

[@obumjohnokafor6899]

I have never seen a video as short as this yet explained so many things in great informative details. I've saved it to my "personal development" playlist.

[@larslover6559]

Theres a kink between what I understood and this lesson

[@anandsuralkar2947]

Just wow..i am soooo glad to u.dude i am so thankful i always wondered how this actually happens.and u shown me wow

[@Anvilshock]

Now go watch a video on how the word "you" is spelt.

[@ScienceANDesign]

There is a mistake in this video: magnetic loop antennas exist, and they have extensive use between amateur radio operators (magnetic loop antennas are a single turn coil, fed with an alternate signal, just as the dipole antenna). In this video, they present loops antenas as they were useless, which is not true at all.

[@adiliraliyev5882]

Thanks!

[@2150dalek]

Very well detailed explanation of radio waves. Excellent presentation.👏

[@theodoresignal]

This a lot of high level information. I think it was well done.

[@KingIkram1111]

kzbin.info/www/bejne/oKvTfKBvhsp_etE

[@martinheath5947]

This reminds me of those maths class moments of utter bemusememt I used to have at school!

[@maxwellsequation4887]

This is BRILLIANT

[@JoeNopos]

Very good explanation! Thank you!

[@leandroalgenton]

I'm glad seeing such brilhant and beatiful presentation! Thank you!

[@sreenathc]

The best explanation of how a EM wave is generated I ever saw 👏🏻 But the impedance matching bit needs some work as it never addressed the “why” it should match for best power transmission. That example of alternator, motor and bulb added no value IMO. However overall a brilliant video...thank you!

[@rpbajb]

I think they were trying to illustrate impedence by using a combination of real-world loads in that example at 6:08 . Impedence is a combination of resistance, represented by a resistive load such as an incandescent bulb; inductance, represented by an electric motor; and capacitance, represented by what appeared to be a battery.

[@reversemyopia]

That "kink" theory is what most people should be looking for.

[@Brynmawrhill]

Yes. Its a neat way of explaining it.

[@EmilioDaFirenze]

A wise man once said “you don’t need to know how it works, just work it”

[@hasrithachereddy1482]

This is the best video i have ever seen on working of Antenna. Thanku.

[@tomlafleur1748]

Good start at illustrating electromagnetic radiation. However, the 4 equations we use today are Oliver Heaviside's reformulation of Maxwell's 20+ equations used to map Faraday's (and others) observations of electric and magnetic phenomenon. Heaviside's reformulation and other ideas made Maxwell's work usable for telecommunications.

[@ambientsoda106]

its amazing Maxwell could learn this in his time!

[@jasonhayward6965]

Interesting this is a show about understanding electroradiation. If we knew about it,we would already be travelling at the speed of light. Like yah think

[@balda1358]

4:00 radiation 4:20 dipol antenna - transmitter 5:00 dipol antenna - reciever 5:27 Antenna design criterion - antenna length 5:40 Antenna design criterion - impedance matching 6:33 impadance matching in antenna 6:55 parabolic antenna - impadance of free space

[@abhijitnayak5445]

Oh man! You are giving so much theories & discoveries in a single video

[@shabazuddin335]

Thanks bro. Really our seniors of 18th and 19 th century are legends of the technology. I would like attend any of the one scientist's lecture atleast 15 mins.

[@mikewang4626]

This video solves my several-years confusion.

[@MrSaemichlaus]

Heinrich Hertz: "I managed to generate an arc across electrodes. It glows in nice colors, but it also hertz."

[@lanfour4444]

Underrated comment.

[@waltherziemerink]

Watt did I just read.

[@linuxd]

Ba da psst

[@dampandrew]

No 5G

[@vincenttsang1797]

@@waltherziemerink ll9

[@somniato7759]

I can't believe I found you just now, like literally seconds ago

[@dennisruga8603]

Im an IT but love these kind of stuffs👍

[@sahanavica.5574]

This is the best and clearest video I have seen explaining this concept so far. Well done!

[@PIYUSH_ANALYTIX]

Please make a video on *How to understand this video* _😂😂😂Just joking_

[@PIYUSH_ANALYTIX]

*Thanks for so many likes ♥️*

[@edgar_ie_g1196]

Lel

[@PIYUSH_ANALYTIX]

@@edgar_ie_g1196 what ..?

[@pranoypaul4020]

Hutt

[@VoidHalo]

I can suggest a few things. First, take notes. You'll have a better chance of understanding things if you remember more of it, and simply writing something down will help with that. Look up any terms you don't understand. Third, watching other videos or reading other texts about the same thing. And fourth, be patient and persistent. You've got your whole life to figure this stuff out, take your time with it and have fun. But if you keep at it, you'll find yourself learning things you never thought possible. Another thing that helps with general knowledge is to make a point of learning just one new thing a day. Best of luck to you. And don't forget to enjoy the journey of learning. Cheers.

[@pranoypaul4020]

Oww maam your lesson is great and more understandable due 2 the awesome animation

[@kokomanation]

This animation with the moving charge reminded me of the Doppler effect

[@akhilaryappatt]

aah, that's why it looked familiar

[@davidrobinson7112]

Excellent presentation. Easily and quickly understood. Thank you 😊

[@nickodem2]

J'ai "kiffé" grave . J'en suis tout retourné ! J'y reviendrai pour être sûr d'avoir bien compris 😛

[@DrLumpyDMus]

6:20 I'm a little bothered by the animation of the "circuit". Not sure what kind of circuit you're describing. A light bulb, electric motor, and a power supply in series with an alternator output?

[@wareshubham]

best explanation about EM waves so far.. I would request to do more in depth on wave propagation and you might like to add 4G and 5G to make it more intuitive.

[@stargazer7644]

4g and 5g are simply protocols. They have nothing to do with radio propagation.

[@ZizoAhmed]

Man , wtffffffff . my whole education years have been summarized by a 7:28 video length .

[@Potatomatoo]

One of the best channels for engineering concept and the best animation engineering concept channel 👍 Great explanation as always

[@dionsorrell]

Well done. Good information. And mercifully, no music. Thanks

[@praful4383]

So impedance of our body do not match with impedance of transmitting antenna ....thats why we dont feel electric shock in atmosphere.

[@KyleDB150]

not really, no

[@praful4383]

@@KyleDB150 why?

[@robertlucas3749]

About halfway into I started dreaming about neurolink , would be my only chance of understanding it.

[@christinearmington]

“Let’s explore this logically.” Me: Sure. 🤨

[@seesaw7320]

You've got 666 vids in weird stuff Playlist, illuminati confirmed

[@saliknazir4768]

This is a godly explanation. Thank you very much for this video.

[@SuperHutomo]

i've been almost 4 year in undergraduate physics, but this video feels like a revelation from god

[@catkeys6911]

Should come with a warning: "if you are not ALREADY an electrical engineer, none of this will make much sense to you."

[@GAND-OZZ]

1:40 exactly what atom is this? I’ve been trying to find it for a long time but I can never find it. I see some tritium and deuterium which indicates it’s a little radioactive (hence the name electromagnetic radiation). It might be tritium and deuterium mixed together but it would immediately become helium and a neutron so please tell my what it is.

[@TheBozn]

Looks like it could be beryllium-10

[@Aniruddha_godbole]

Sir Please Detailed video on Control Systems.

[@sumitpandya5408]

Thanks

[@momehrot]

The best explanation of EM waves. I wish i had access to this content when I was trying to be an engineer

[@James-tw5et]

I used this to time travel