That was well explained. But in this example we had this charged particle which was oscillating and thus generated the oscillating E field we can call EM wave. But we get EM wave when ever charged particle is in acceleration don't we? So that it doesn't need to osculate? Is there a way to explain the emission of em wave in that case? Also a student of mine asked about the phase shift of 180 degrees that occurs in the Electric Field of a EM wave, when reflected from an optically denser medium. Is there an intuitive way to explain that or is it just pure math? Thanks in advance!
Hello Visa, Question1 (acceleration of charged particle): Yes, we do, because accelerating the charge, will create a perpendicular disturbance in the field lines (thus a variation in the direction of the E Field). A variation of the electric field is radiation. A good visualisation is provided by this video: ruclips.net/video/uVB3G_Edim4/видео.html. And you can explore more with this inspiring simulation: ruclips.net/video/oH7WRKglKNk/видео.html The second question was trickier (why phase change of pi). It is hard to avoid the post high school math here… and it is true that most lecturers explain that it occurs and when, but not why… You can roughly see it that way, by referring to the amplitude reflection coefficient Erefl/Eincident = r = (n1-n2)/(n1+n2). When n2>n1 the ratio of amplitudes is negative, implying a phase flip. More info here: www.usna.edu/Users/physics/mungan/_files/documents/Scholarship/PhaseChange.pdf Good questions! I hope my answers help you.
@@PhysicsMadeEasy please, can you provide a suggestion for a somewhat in-depth but still intuitive source on fields (classical versus quantum)? Preferably in the form of YT videos. Thanks a lot. (I've tried Sean Caroll's Biggest ideas of the universe, but cannot put those pieces together in a more or less coherent whole).
Thank you so much Imallright. Some people spend a lifetime of research looking for complex things, which is good and useful for society. Surprisingly, it needs also a lot of time and teaching experience to present basic concepts in a pedagogical way while remaining rigorous... (I wished I had me when I was a student lol!)
How i wish i had a teacher like you in my life SIR.I love physics but graduated with a third class degree and still doing in teaching it in my locality nigeria. Thanks for the video my mentor.
Hi Muhdi, thank you so much for these very kind words. All my wishes for a good continuation of your studies of physics, and also my best wishes of success in inspiring young students when teaching it! :-)
For those wondering why the magnitude of E is changing: “Alternating current (AC) is an electric current which periodically reverses direction and changes its magnitude continuously with time”
@@phoumint EINSTEIN IS UNCOVERED BY DIMEGLIO: WHAT IS E=MC2 is dimensionally consistent, AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS the rotation of WHAT IS THE MOON matches the revolution. Indeed, consider what is the man (AND THE EYE ON BALANCE) who IS standing on what is THE EARTH/ground; AS touch AND feeling BLEND; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE). Indeed, WHAT IS GRAVITY is, ON BALANCE, an INTERACTION that cannot be shielded or blocked. GREAT. BALANCE AND completeness go hand in hand, AS it all CLEARLY makes perfect sense ON BALANCE. Magnificent. By Frank Martin DiMeglio The sun's tide-generating force is about half that of the moon. One half times one third is one sixth. Consider what is water. The density of what is the Sun is believed to be about one quarter of that of what is THE EARTH. The diameter of WHAT IS THE MOON is about one quarter of that of what is THE EARTH. The density of the human body is about the same as water. Lava is about three times as dense as water. Pure water is about half as dense as packed sand/wet packed sand. We can multiply one fourth times two thirds in order to ALSO get the surface gravity on the Moon in comparison with what is THE EARTH/ground. The gravity of the Sun upon the Moon is about TWICE that of what is THE EARTH. The lunar crust is about TWICE as thick on the far side of what is the Moon. Notice what is the TRANSLUCENT AND BLUE sky ON BALANCE. The maria (lunar “seas”) do occupy ONE THIRD of the visible near side of what is the Moon. One half times one third is one sixth. What is E=MC2 is taken directly from F=ma, AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS the rotation of WHAT IS THE MOON matches the revolution. Consider what is the orange AND setting Sun ON BALANCE. Consider what is THE EYE ON BALANCE. Consider what is the fully illuminated AND setting/WHITE MOON ON BALANCE !!! What is E=MC2 is dimensionally consistent. The land surface area of what is THE EARTH is 29 percent. This is EXACTLY between (ON BALANCE) what is one third AND what is one fourth. The maria occupy one sixth of what is the Moon. The BULK DENSITY of what is the Moon is comparable to that of (volcanic) basaltic lavas on what is THE EARTH/ground. Consider what are the tides. ONE HALF times one third is one sixth. ONE QUARTER times two thirds is one sixth. What is gravity is, ON BALANCE, an INTERACTION that cannot be shielded or blocked. CLEAR water comes from what is THE EYE (ON BALANCE). ON BALANCE, what is THE EARTH is ALSO BLUE !!! GREAT. BALANCE AND completeness go hand in hand. What is LAVA IS ORANGE, AND it is even blood red. Awesome. Yellow is the hottest color of lava. Blue is the hottest flame color. Note: Consider what is the blue flame. The lunar surface is chiefly composed of pumice. By Frank Martin DiMeglio In understanding SPACE, what is gravity, TIME, AND time dilation (ON BALANCE), it is important is it to understand what is a BALANCED displacement of what is SPACE. ELECTROMAGNETISM/energy is gravity ON/IN BALANCE. Consider what is E=MC2. TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. Consider TIME AND time dilation ON BALANCE. (c squared CLEARLY represents a dimension of SPACE ON BALANCE.) Indeed, the stars are POINTS in the night sky ON BALANCE. The rotation of WHAT IS THE MOON matches the revolution. Consider what is THE EYE, AND notice what is the TRANSLUCENT AND BLUE sky ON BALANCE. NOW, consider what is the BALANCED MIDDLE DISTANCE in/of SPACE. CLEARLY, BALANCED inertia/INERTIAL RESISTANCE is fundamental (ON BALANCE). “Mass"/ENERGY IS GRAVITY. ON BALANCE, consider what is the orange (AND setting) Sun. “Mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent WITH/as what is BALANCED electromagnetic/gravitational force/ENERGY, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE (ON BALANCE) consistent WITH E=MC2, F=ma, TIME, AND time dilation ON BALANCE. This CLEARLY AND NECESSARILY represents, DESCRIBES, AND INVOLVES what is possible/potential AND actual ON/IN BALANCE, AS ELECTROMAGNETISM/energy is CLEARLY (AND NECESSARILY) proven to be gravity (ON/IN BALANCE). Notice what is the fully illuminated (AND setting/WHITE) MOON ON BALANCE. Great. TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. Indeed, inertia/INERTIAL RESISTANCE is proportional to (or BALANCED with/AS) GRAVITATIONAL force/ENERGY; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE). This CLEARLY explains what is E=MC2 AND F=ma ON BALANCE, AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE !! (Consider TIME AND time dilation ON BALANCE.) Great. Indeed, consider WHAT IS THE EARTH/ground ON BALANCE. I have mathematically proven why the rotation of WHAT IS THE MOON matches the revolution, AS ELECTROMAGNETISM/energy is CLEARLY (AND NECESSARILY) proven to be gravity (ON/IN BALANCE). Consider TIME AND time dilation ON BALANCE, AS the stars AND PLANETS are POINTS in the night sky ON BALANCE; AS c squared CLEARLY represents a dimension of SPACE ON BALANCE. (Consider what is THE EYE ON BALANCE.) I have mathematically proven what is the fourth dimension, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!! I have explained why what are OBJECTS may fall at the SAME RATE. By Frank Martin DiMeglio
@@Lorenzo-zg3ct You have to reverse voltage, assuming you have battery then change + with - and vice versa :) If you do it more more frequently then you have AC current :D
Hello Byynx, thank so much for your kind words. I am so glad that my work enlightens people on the wonders of our universe! Comments like yours make me feel like achieving my goals 😊
It is, amazing isn't it! And often easier to understand than many textbooks would make you think... I lie in the title of my channel: Physics does not need to be made easy. It is already :-)
Wow. Thank you so much. I self-taught AP physics 1 and 2, and got 4 on both the exams, but I was struggling to grasp this concept for so long. You made it so easy to understand this. I wish I found you 2 years ago.
That is the best explanation I have ever come across , any electrical tutor / electrician / teacher I have asked to explain this has been stumped . Thanks very much !!
Hello Jonathan, I appreciate very much you letting me know. It gives me a boost of energy and encouragement when I read that I reach my goal like this :-)
sir I can't thank you in words . ❤️❤️ I don't know why all teachers are not like you . my teacher explained me and whole RUclips explained me but I was not getting feel of this topic . I was able to solve em wave numericals but wasn't understanding what's happening in real . but now my all concepts are crystal clear. again thank you so much 🙏🏻🙏🏻🙏🏻💖. I have subscribed your channel and pray for millions of subscriber on you channel . ❤️🙏🏻🙏🏻🙏🏻
Thank Sunny, I am super happy that this video helped you so much! Please keep praying for that milliion subs... It's quite a long way haha. It would make me euphoric though to know my work helped so many people !
You knew exaclty what to explain how to explian, most videos skip the basic parts and go straight into concepts living us in the woods without much explianing, but you sir knew exaclty what our issues where with this topic and you explianed it to us not as if we were fellow prefesors but as if we were what we are and that being students. THANK U KEEP IT :)
Hello Helias, thank you for your kind words... You summed up why this channel exists: when I teach my real life students, I always make sure that the basic concepts I need to use are clear for them, otherwise, it can create or even crystallize confusion in their minds... I made this channel , focused on the basics, so that students can fly with their own wings...
Thanks a lot I never imagined it that way. You definitely made me understand this topic better. The relation between electron/change movement and light was just mind blowing!
Thank you Mubin for your kind words. It's true I haven't posted a video for a while: so much on my plate right now! But making new videos is the plan, so expect a burst of new fun physics videos when the time comes!
Awesome explanation Sir, Hats off 🙏🏻😇 You did the explanation and theory in a calm manner , like not too speed not too slow.... Its quite fascinating...
Thank you Max for your comment, especially that I do the graphics myself (just using Powerpoint :-) ). Oh, and I agree. Sometimes I think that if I had access RUclips material when I was a student (late 80s, early 90s), my life as a student would have been much less painful, and I probably would have won a bunch of Nobel prizes since haha! Yet, the grass appears always greener elsewhere: I still wonder why the average level of young people in maths and sciences has been falling these last few decades (according to many statistics). It's quite counterintuitive...
1) Can you explain how the receiving antenna knows which emitting antenna to pick up. 2) How does the antenna "read" the electron, I figure something so small and fast would be hard to track precisely. If you could answer these that would be awesome! Great video btw!
Hi Hunter, the receiving antenna actually receives all signals from all nearby emitting antennas. It is a small filtering circuit located in the circuit containing the receiving antenna that will select the frequency of interest thus the emitting antenna of interest (for example, with vintage radio receivers, the passing band of the filtering circuit is controlled by a rotary button). The antenna does not "read" one electron, but trillions and trillions that are submitted to the EM wave the same way (statistically, the evolution of the resulting current). I hope this helps!
Thank you Rajat... I used to be young haha! But I am not that old either, so I should still be around for a decade or two :-). And this channel keeps my brain young and powerful :-)!
Dude, this video was awesome! Well done! It gave me a greater understanding of what light is. Now if you really want to blow my mind, explain the role of photons in this. When that bar in the example is emmiting visible light in the electromagnetic spectrum, is it also emitting photons? And does that mean....as far as particles go...infrared also produces photons....and even radio waves produce photons?
Hi QQ, in this video, i remain in the framework of classical physics that sees light as the propagation of the oscillation of an electromagnetic field. In quantum mechanics, light is viewed as a flow of particles called photons. These photons are like tiny pieces of energy, like localized pulses, which have thus a frequency and a wavelength (E-h* frequencyf=hc/wavelength. that frequency or wavelength has the same value as the one that shows up in the classical description of light. So yes, visible light is made of "visible" photons, infrared is made of "infrared" photons and radiowaves are made of "radio" photons.
@@PhysicsMadeEasy Wow...thanks! My mind is blown! Now I'm wondering if photons are just the intersection of two different electromagnetic waves with the same frequency....
This was definitely amazing! I was looking for an explanation how electromagnetic waves work or travel, and this was the video that finally made me understand the whole concept. But here are some questions, the oscillating electrons create the oscillating electric field which results in EM waves, so does this wave go on forever? Does it not get weakened as it travels? If so, then does light get weaker too as it travels (Which I think yes)? And is that the same reason we see faded light when it comes from a distance? And how was the very first light created without an oscillating charge? Thanks a lot! Your videos are great, keep it up~
Hello Sakib, - The oscillating electrons create the oscillating electric field which results in EM waves, so does this wave go on forever? - If there is no other electric field to disturb it on the way, yes it will. - Does it not get weakened as it travels? - In a purely static space empty of gravitational mass, no, it will not lose energy and go on forever. - If so, then does light get weaker too as it travels (Which I think yes)? - Light is the sum of rays. Each ray is an electromagnetic wave. A light source (or antenna) emits in all directions. Draw a point on a piece of paper (the source of light). Draw twelve lines going away of that point (in different directions). What you perceive as the intensity of light, is the concentration of these lines. You see they are more concentrated close to the source than when they are away… That is what you perceive as the weakening of light. But each line stays a line of the same thickness, each ray conserves its energy… - And how was the very first light created without an oscillating charge? - You mean at the beginning of the Universe? Charges were there before light (electric charge is a conserved property).
oscillating force of oscillating electric field of emitters electron displaces the electron of receiver continuously which cause oscillation of receiver electron And thus work is done by emitter electron on receiver electron and as we know work is transfer of energy Great 👍 keep it up and upload more videos your physics is beyond from this universe you are amazing 👏 You prove physics os love ❤ 😍
Though I watched your videos now, as a physics student who always has questions, my dream is to communicate with you doctor. I hope I will achieve my dream and ask you doctor, with my all respect to you❤️
Hi Hassan, you can always check out my tutoring website to know how it works (physics-tutor.nl/), but I have to tell you that my teaching agenda is currently full for the next few months...
Intelligently explaining the concept of EM. I have one question: Do EM waves we generate have mass and are EM waves use air particles as medium when they are transmitted from the source to the destination?? Thanks!
Hi Jehan, Within a classical physics context, EM waves are the propagation of an electric field fluctuation . No information can travel faster than the speed of light, so the speed is that of light. As the speed of an EM wave can be measured as being that of light, it cannot have any mass, but it does visualize the transport of energy (so according to General relativity, spacetime will be affected by the EM wave, the same way mass does) Because of the delay due to the limited speed of propagation of information, the oscillations of the charged source ends up with the shape of a wave propagating from the source. In other words, it is not something that is material, and therefore does not need a material medium (like air particle) to propagate.
Hi Amarbadran. I am glad you enjoyed the video and that it helped you understand how an antenna works. Please note that this is not exactly how a standard lamp works... the concept in the video works for low frequency EM waves like Radiowaves or microwaves. But if you tried to do this with visible light, although conceptually correct (it is the acceleration of charged particles that generate light), other phenomena would come into play and the experiment would not work. If you want to know how light is emitted by the sun or by a light bulb, check my videos about black bodies.
NICE EXPLANATION, 1] BUT AT 01:50 THE SECOND BAR WERE PLACED IN THE ELECTRIC FIELD SO THEY CAN TRANSMIT SIGNAL IN THAT CLOSER DISTANCE BETWEEN THEM, WHAT IF THE BAR IS PLACED TO FAR AWAY, AT SUCH DISTANCE THAT THEY ARE NOT IN THE FIELD, WILL THEY STILL TRANSMIT SIGNAL, HOW? 2] WHY ALL ELECTROMAGNETIC WAVES PROPAGATES AT THE SAME SPEED IN VACCUM REGARDLESS OF THEIR ENERGY. FOR EG, THOUGH THERE IS MUCH DIFFERENCE BETWEEN ENERGIES OF GAMMA RAYS AND RADIO 📻 WAVES, THEY TRAVEL AT THE SAME SPEED, WHY? 3] FROM WHERE DOES THESE ELECTROMAGNETIC WAVES/RADIATIONS GET ENERGY? 4] WHAT IS THE DIFFERENCE BETWEEN 'ELECTROMAGNETIC WAVES' AND 'ELECTROMAGNETIC RADIATION' ( I AM ASKING THIS QUESTION BECAUSE WE USE THE TERMS VELOCITY AND SPEED INTERCHANGEABLY WRONG, SO DON'T WANT TO BE WITH ELECTROMAGNETIC MAGNETIC (WAVES "OR" RADIATION) WAITING FOR ANSWER.
Hello Swap, 1/ Well if you move away from the transmitting antenna of a radio station, you’ll end up having trouble receiving your favorite radio show ! The signal will get weaker and weaker and then wil get lost in noise. Concretely, the energy of the EM wave decreases as the inverse square of the distance. 2/As you know, the speed of light is invariant. Using classical physics, one can show that the energy carried by an EM wave is related to the amplitude of the oscillation of the electric field and the pulsation of the wave (or frequency of the wave). Using quantum mechanics, it depends on the density of photons and their associated frequency. 3/ The source of an EM wave is an oscillating charge. An oscillating charge implies an oscillating force applied to it. The work provided by that force to the charge is the energy source of the EM wave. 4/ The difference is not physical, just semantic. When considering classical physics, one should use the term EM Wave. When considering quantum physics,, one should use EM Radiation. Physically, these describe the same phenomena, the difference is just a question of perspective. Oh, and consider using small caps when writing. Large caps means that you are shouting or screaming. Physics is a subject that should always inspire coolness ;-)
A billion? That's 1 person out of 7 in the world... haha! If 1 person our of 7 would be the kind to enjoy physics (= making efforts to understand how nature and our universe works), the world would be a much more peaceful place :-)
You are welcome. About the music, I actually have two hats... I am a physics teacher but also a music producer, so I just pick in my own catalogue for video music backgrounds. You can hear it on the site of one of my editors if you are curious. (www.audiosparx.com/sa/summary/play.cfm/crumb.2/crumc.0/sound_iid.933939).
Great illustration and explanation! Now, if I use direct current to heat a filament and produce light, what determines the frequency of the electro-magnetic waves?
Hello Christopher, The filament will emit light not because of the oscillations of the AC current passing through it, but because that current heats the filament. The light bulb is made such that heat has trouble dissipating away (The bulb is under vacuum). Consequently, The temperature of the filament rises, and the filament acts like a black body emitting light for which the maximum intensity is for a wavelength that is inversely proportional to temperature (Wien's law). The integral of that intensity over all wavelengths (i.e. the total intensity of the light), depends on the 4th power of the temperature (Stefan Boltzman's law). Check my videos on black bodies if you want to know the details. ruclips.net/video/EWqzg0iqNtw/видео.htmlsi=wgU6NqsGRhPvcbyM ruclips.net/video/ugsvADj1wts/видео.htmlsi=OPKRAxa9AQ_QGFXz
That's wonderful Suhas! Physics is a fascinating topic when you get the basics. I am glad that you see it as a hobby, and that it provides you intellectual breaks in your daily life :-)
I think that even dc current through a wire can make a magnetic field , and even heat (IR) and light if the current is high enough. Many things to consider , and your vid helps.
Better now than never Akextremerickert haha! How did it make you feel to understand that? Please note though that this is just one of the two main interpretations (that of classical physics).
That was well explained. But in this example we had this charged particle which was oscillating and thus generated the oscillating E field we can call EM wave. But we get EM wave when ever charged particle is in acceleration don't we? So that it doesn't need to osculate? Is there a way to explain the emission of em wave in that case? Also a student of mine asked about the phase shift of 180 degrees that occurs in the Electric Field of a EM wave, when reflected from an optically denser medium. Is there an intuitive way to explain that or is it just pure math? Thanks in advance!
Hello Visa,
Question1 (acceleration of charged particle): Yes, we do, because accelerating the charge, will create a perpendicular disturbance in the field lines (thus a variation in the direction of the E Field). A variation of the electric field is radiation. A good visualisation is provided by this video: ruclips.net/video/uVB3G_Edim4/видео.html. And you can explore more with this inspiring simulation: ruclips.net/video/oH7WRKglKNk/видео.html
The second question was trickier (why phase change of pi). It is hard to avoid the post high school math here… and it is true that most lecturers explain that it occurs and when, but not why…
You can roughly see it that way, by referring to the amplitude reflection coefficient Erefl/Eincident = r = (n1-n2)/(n1+n2). When n2>n1 the ratio of amplitudes is negative, implying a phase flip. More info here: www.usna.edu/Users/physics/mungan/_files/documents/Scholarship/PhaseChange.pdf
Good questions!
I hope my answers help you.
@@PhysicsMadeEasy thank you! This was exactly what I was looking for!
@@PhysicsMadeEasy When an electric wave oscillates is there a delay for when the magnetic field oscillates?
@@JL-fh4qw Hi J.L., in vacuum , no there is not: the oscillation and of the E field and that of the M field are in phase.
@@PhysicsMadeEasy please, can you provide a suggestion for a somewhat in-depth but still intuitive source on fields (classical versus quantum)? Preferably in the form of YT videos. Thanks a lot. (I've tried Sean Caroll's Biggest ideas of the universe, but cannot put those pieces together in a more or less coherent whole).
I have to say this is the first time I am starting to understand what eletromagnetic wave is. Thank you.
Omg same!
You probably never saw eugene khutoryansky
@@raphaelfrey9061cfg❤rrdr de😂drrrrrrre
@@raphaelfrey9061😂tutu y he ftme
@@raphaelfrey9061 w
This little video captured what miles of blackboard, chalk and textbooks couldn't. Thanks
Hi SuperGirl, I am glad you enjoyed this video. Thank you for letting me know :-)
This is one of the most powerful explanations I have ever seen. Please make more videos.
I sure will, thank you Bharath! There are many more on the channel. Feel free to explore!
@@PhysicsMadeEasy , thank you !
Very humble, respectful and knowledgeable person. Thank you.
Thank you for rescuing me out of all the confusion on em waves. Your 3 minute presentation is worth the research of a lifetime.
🙏🙏🙏🙏
Thank you so much Imallright. Some people spend a lifetime of research looking for complex things, which is good and useful for society. Surprisingly, it needs also a lot of time and teaching experience to present basic concepts in a pedagogical way while remaining rigorous... (I wished I had me when I was a student lol!)
How i wish i had a teacher like you in my life SIR.I love physics but graduated with a third class degree and still doing in teaching it in my locality nigeria. Thanks for the video my mentor.
Hi Muhdi, thank you so much for these very kind words. All my wishes for a good continuation of your studies of physics, and also my best wishes of success in inspiring young students when teaching it! :-)
This was by far the easiest explanation that I have encountered.
I am glad you enjoyed my approach. Thanks for letting me know :-)
Omg finally I found a professor I like
Good
For those wondering why the magnitude of E is changing:
“Alternating current (AC) is an electric current which periodically reverses direction and changes its magnitude continuously with time”
Thank you so much ❤
Question. How can it reverse directions?
@@phoumint EINSTEIN IS UNCOVERED BY DIMEGLIO:
WHAT IS E=MC2 is dimensionally consistent, AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS the rotation of WHAT IS THE MOON matches the revolution. Indeed, consider what is the man (AND THE EYE ON BALANCE) who IS standing on what is THE EARTH/ground; AS touch AND feeling BLEND; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE). Indeed, WHAT IS GRAVITY is, ON BALANCE, an INTERACTION that cannot be shielded or blocked. GREAT. BALANCE AND completeness go hand in hand, AS it all CLEARLY makes perfect sense ON BALANCE. Magnificent.
By Frank Martin DiMeglio
The sun's tide-generating force is about half that of the moon. One half times one third is one sixth. Consider what is water. The density of what is the Sun is believed to be about one quarter of that of what is THE EARTH. The diameter of WHAT IS THE MOON is about one quarter of that of what is THE EARTH. The density of the human body is about the same as water. Lava is about three times as dense as water. Pure water is about half as dense as packed sand/wet packed sand. We can multiply one fourth times two thirds in order to ALSO get the surface gravity on the Moon in comparison with what is THE EARTH/ground. The gravity of the Sun upon the Moon is about TWICE that of what is THE EARTH. The lunar crust is about TWICE as thick on the far side of what is the Moon. Notice what is the TRANSLUCENT AND BLUE sky ON BALANCE. The maria (lunar “seas”) do occupy ONE THIRD of the visible near side of what is the Moon. One half times one third is one sixth. What is E=MC2 is taken directly from F=ma, AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS the rotation of WHAT IS THE MOON matches the revolution. Consider what is the orange AND setting Sun ON BALANCE. Consider what is THE EYE ON BALANCE. Consider what is the fully illuminated AND setting/WHITE MOON ON BALANCE !!! What is E=MC2 is dimensionally consistent. The land surface area of what is THE EARTH is 29 percent. This is EXACTLY between (ON BALANCE) what is one third AND what is one fourth. The maria occupy one sixth of what is the Moon. The BULK DENSITY of what is the Moon is comparable to that of (volcanic) basaltic lavas on what is THE EARTH/ground. Consider what are the tides. ONE HALF times one third is one sixth. ONE QUARTER times two thirds is one sixth. What is gravity is, ON BALANCE, an INTERACTION that cannot be shielded or blocked. CLEAR water comes from what is THE EYE (ON BALANCE). ON BALANCE, what is THE EARTH is ALSO BLUE !!! GREAT. BALANCE AND completeness go hand in hand. What is LAVA IS ORANGE, AND it is even blood red. Awesome. Yellow is the hottest color of lava. Blue is the hottest flame color. Note: Consider what is the blue flame. The lunar surface is chiefly composed of pumice.
By Frank Martin DiMeglio
In understanding SPACE, what is gravity, TIME, AND time dilation (ON BALANCE), it is important is it to understand what is a BALANCED displacement of what is SPACE. ELECTROMAGNETISM/energy is gravity ON/IN BALANCE.
Consider what is E=MC2. TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. Consider TIME AND time dilation ON BALANCE. (c squared CLEARLY represents a dimension of SPACE ON BALANCE.) Indeed, the stars are POINTS in the night sky ON BALANCE. The rotation of WHAT IS THE MOON matches the revolution. Consider what is THE EYE, AND notice what is the TRANSLUCENT AND BLUE sky ON BALANCE. NOW, consider what is the BALANCED MIDDLE DISTANCE in/of SPACE. CLEARLY, BALANCED inertia/INERTIAL RESISTANCE is fundamental (ON BALANCE). “Mass"/ENERGY IS GRAVITY. ON BALANCE, consider what is the orange (AND setting) Sun. “Mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent WITH/as what is BALANCED electromagnetic/gravitational force/ENERGY, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE (ON BALANCE) consistent WITH E=MC2, F=ma, TIME, AND time dilation ON BALANCE. This CLEARLY AND NECESSARILY represents, DESCRIBES, AND INVOLVES what is possible/potential AND actual ON/IN BALANCE, AS ELECTROMAGNETISM/energy is CLEARLY (AND NECESSARILY) proven to be gravity (ON/IN BALANCE). Notice what is the fully illuminated (AND setting/WHITE) MOON ON BALANCE. Great. TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. Indeed, inertia/INERTIAL RESISTANCE is proportional to (or BALANCED with/AS) GRAVITATIONAL force/ENERGY; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE). This CLEARLY explains what is E=MC2 AND F=ma ON BALANCE, AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE !! (Consider TIME AND time dilation ON BALANCE.) Great. Indeed, consider WHAT IS THE EARTH/ground ON BALANCE. I have mathematically proven why the rotation of WHAT IS THE MOON matches the revolution, AS ELECTROMAGNETISM/energy is CLEARLY (AND NECESSARILY) proven to be gravity (ON/IN BALANCE). Consider TIME AND time dilation ON BALANCE, AS the stars AND PLANETS are POINTS in the night sky ON BALANCE; AS c squared CLEARLY represents a dimension of SPACE ON BALANCE. (Consider what is THE EYE ON BALANCE.) I have mathematically proven what is the fourth dimension, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!! I have explained why what are OBJECTS may fall at the SAME RATE.
By Frank Martin DiMeglio
@@Lorenzo-zg3ct You have to reverse voltage, assuming you have battery then change + with - and vice versa :) If you do it more more frequently then you have AC current :D
This is the 1st video where I actually understoood EM wave and how radio works, thanks!
What a masterpiece of explanation. It's amazing how with a combination of videos we can understand great things.
Hello Byynx, thank so much for your kind words. I am so glad that my work enlightens people on the wonders of our universe! Comments like yours make me feel like achieving my goals 😊
🎉❤😢
This 3 minute video was enough for me to subscribe to your channel. Great stuff!
i haven't imagined that i could be able to understand the electromagnetic waves but after watching this i feel its amazing
It is, amazing isn't it!
And often easier to understand than many textbooks would make you think...
I lie in the title of my channel: Physics does not need to be made easy. It is already :-)
Your explanation of the topic was so clear, I never thought I could understand it so easily! Thank you 😊
Merci Celine :-)
Just discovered your channel. Very enjoyable viewing. Love your style of presentation. New sub.
Hello Rich. I am glad you enjoyed your visit to my channel. Thank you for you kind and encouraging words. You are welcome to visit again anytime :-)!
Wow. Thank you so much. I self-taught AP physics 1 and 2, and got 4 on both the exams, but I was struggling to grasp this concept for so long. You made it so easy to understand this. I wish I found you 2 years ago.
a 4 in AP Physics while self taught. Well done! Thank you so much for the kind words!
Thank you so much for the encouragement. Please keep up with your good work. That help students like me a lot.
NICELY DONE 😊😊😊❤❤❤❤ I AM HAPPY FOR YOU 👍🏿👍🏿👍🏿🙏🏿🙏🏿🙏🏿✌🏿✌🏿✌🏿👊🏿👊🏿👊🏿
So far d most comprehensive explanation of electromagnetic waves available on Internet .....!!!! Thank you 🙏
You are welcome. I am glad that this video brings a little clarity to so many!
That is the best explanation I have ever come across , any electrical tutor / electrician / teacher I have asked to explain this has been stumped . Thanks very much !!
Hello Jonathan, I appreciate very much you letting me know. It gives me a boost of energy and encouragement when I read that I reach my goal like this :-)
Finally I understand the what is electromagnetic wave actually. Thank you Professor, May Allah Subhanahuwataala bless u.
Thank you Muhammad for your kind wish. I am glad my video helped you.
@@PhysicsMadeEasy thanks for sharing your simple information 🙏👍
sir I can't thank you in words . ❤️❤️ I don't know why all teachers are not like you . my teacher explained me and whole RUclips explained me but I was not getting feel of this topic . I was able to solve em wave numericals but wasn't understanding what's happening in real . but now my all concepts are crystal clear.
again thank you so much 🙏🏻🙏🏻🙏🏻💖. I have subscribed your channel and pray for millions of subscriber on you channel . ❤️🙏🏻🙏🏻🙏🏻
Thank Sunny, I am super happy that this video helped you so much! Please keep praying for that milliion subs... It's quite a long way haha. It would make me euphoric though to know my work helped so many people !
You knew exaclty what to explain how to explian, most videos skip the basic parts and go straight into concepts living us in the woods without much explianing, but you sir knew exaclty what our issues where with this topic and you explianed it to us not as if we were fellow prefesors but as if we were what we are
and that being students. THANK U KEEP IT :)
Hello Helias, thank you for your kind words...
You summed up why this channel exists: when I teach my real life students, I always make sure that the basic concepts I need to use are clear for them, otherwise, it can create or even crystallize confusion in their minds... I made this channel , focused on the basics, so that students can fly with their own wings...
Thanks a lot I never imagined it that way. You definitely made me understand this topic better. The relation between electron/change movement and light was just mind blowing!
it is, isn't it? That's why I like physics! :-)
The explanation was superb! I learned a lot in a span of almost 4minutes than our 1hr class discussion. Thumbs-up! 👍👌
@jacobchristner7129 Well you might as well start teaching the right stuff: No more magnetic fields, only electric charge.
@jacobchristner7129 If you are teaching this stuff then answer me: what causes the speed of light?
Extremely underrated 😭
Well explained! Thank you
You are welcome Spammer :-)
I'm brazilian, finally i can understand it, this is, learn how eletromagnetic waves are origninated. Thanks!!!
Hi Tomas, then it means my video has reached it's goal. Thank for the feedback, it's motivating!
Beautifully explained.
This art in explaining physics thankyou😊
So short, crisp and to the point. Thanks teacher
You are welcome... That's what I try to do: Make physics easy. Thank you for your kind feedback :-)
Indeed really well explained. I have seen a few videos on this topic, but you explained it the best! Well done.
I just stumbled onto this video and i hope you never stop creating more videos
Thank you Mubin for your kind words. It's true I haven't posted a video for a while: so much on my plate right now! But making new videos is the plan, so expect a burst of new fun physics videos when the time comes!
Amazing video! Thanks for your work!
Awesome explanation Sir, Hats off 🙏🏻😇 You did the explanation and theory in a calm manner , like not too speed not too slow....
Its quite fascinating...
You made it so easy to understand
This was great. I love a short, precise explanation!
Hi Dan, I am glad you liked it. Thx for the feedback :-)
Hands down the best explanation! Thanks...
Wish we had these excellent, graphic learning-assist videos when I was doing electrical engineering at 'Varsity in the early 1970s
Thank you Max for your comment, especially that I do the graphics myself (just using Powerpoint :-) ).
Oh, and I agree. Sometimes I think that if I had access RUclips material when I was a student (late 80s, early 90s), my life as a student would have been much less painful, and I probably would have won a bunch of Nobel prizes since haha!
Yet, the grass appears always greener elsewhere: I still wonder why the average level of young people in maths and sciences has been falling these last few decades (according to many statistics).
It's quite counterintuitive...
Now I undrestand
1) Can you explain how the receiving antenna knows which emitting antenna to pick up.
2) How does the antenna "read" the electron, I figure something so small and fast would be hard to track precisely.
If you could answer these that would be awesome! Great video btw!
Hi Hunter, the receiving antenna actually receives all signals from all nearby emitting antennas. It is a small filtering circuit located in the circuit containing the receiving antenna that will select the frequency of interest thus the emitting antenna of interest (for example, with vintage radio receivers, the passing band of the filtering circuit is controlled by a rotary button).
The antenna does not "read" one electron, but trillions and trillions that are submitted to the EM wave the same way (statistically, the evolution of the resulting current).
I hope this helps!
Complicated concepts made easy! Great job!
Thanks Dude what an explanation wish you always be young and keep making physics easy 😊
Thank you Rajat... I used to be young haha! But I am not that old either, so I should still be around for a decade or two :-). And this channel keeps my brain young and powerful :-)!
It took some time for me to process it but I get it now! Thank you very much!
You are welcome. I am glad my work helped you learn something new :-)
Dude, this video was awesome! Well done!
It gave me a greater understanding of what light is.
Now if you really want to blow my mind, explain the role of photons in this.
When that bar in the example is emmiting visible light in the electromagnetic spectrum, is it also emitting photons?
And does that mean....as far as particles go...infrared also produces photons....and even radio waves produce photons?
Hi QQ,
in this video, i remain in the framework of classical physics that sees light as the propagation of the oscillation of an electromagnetic field. In quantum mechanics, light is viewed as a flow of particles called photons.
These photons are like tiny pieces of energy, like localized pulses, which have thus a frequency and a wavelength (E-h* frequencyf=hc/wavelength. that frequency or wavelength has the same value as the one that shows up in the classical description of light.
So yes, visible light is made of "visible" photons, infrared is made of "infrared" photons and radiowaves are made of "radio" photons.
@@PhysicsMadeEasy
Wow...thanks!
My mind is blown!
Now I'm wondering if photons are just the intersection of two different electromagnetic waves with the same frequency....
Very simple short and concise
This was definitely amazing! I was looking for an explanation how electromagnetic waves work or travel, and this was the video that finally made me understand the whole concept. But here are some questions, the oscillating electrons create the oscillating electric field which results in EM waves, so does this wave go on forever? Does it not get weakened as it travels? If so, then does light get weaker too as it travels (Which I think yes)? And is that the same reason we see faded light when it comes from a distance?
And how was the very first light created without an oscillating charge?
Thanks a lot! Your videos are great, keep it up~
Hello Sakib,
- The oscillating electrons create the oscillating electric field which results in EM waves, so does this wave go on forever? -
If there is no other electric field to disturb it on the way, yes it will.
- Does it not get weakened as it travels? - In a purely static space empty of gravitational mass, no, it will not lose energy and go on forever.
- If so, then does light get weaker too as it travels (Which I think yes)? -
Light is the sum of rays. Each ray is an electromagnetic wave. A light source (or antenna) emits in all directions. Draw a point on a piece of paper (the source of light). Draw twelve lines going away of that point (in different directions). What you perceive as the intensity of light, is the concentration of these lines. You see they are more concentrated close to the source than when they are away… That is what you perceive as the weakening of light. But each line stays a line of the same thickness, each ray conserves its energy…
- And how was the very first light created without an oscillating charge? -
You mean at the beginning of the Universe? Charges were there before light (electric charge is a conserved property).
@@PhysicsMadeEasy Thanks a lot! This explains my question~
Thank you so much. What a nice presentation of electromagnetic wave.
You are welcome, and I am glad you liked it.
Bestest video ever made on this topic.
Thanku so much sir!💜
Thank you very much for your comment Aditi. I am glad you enjoyed the video :-).
i like short explanation and I like this how you explain understandable way❤
Thank you Sweetblues for your Sweet feedback :-)
Awesome video as always!
Sir, I understand very well thank you so much have a good day❤❤
Hi Abbasi, thank you for your feedback. You too, enjoy your day, and if you are a student, good luck with your studies!
thank you for this amazing video explanation sir !!⚡💡
The best explanation I have ever got for EM waves
Tnku professor
Thank you for your kind words. I am glad my work helped you :-)
Great example and explanation. Great work, thank you.
You are welcome, I am glad it helped!
Only now I understand the EM wave
Nicely explained. My Physics teacher never said about this.
Science is mind blowing!! 🧑🔬
It is, isn't it. Once a student starts getting it, he/she can become irremediably hooked!
I love your work! thank you for making Physics not just easy but cool!
oscillating force of oscillating electric field of emitters electron displaces the electron of receiver continuously which cause oscillation of receiver electron
And thus work is done by emitter electron on receiver electron and as we know work is transfer of energy
Great 👍 keep it up and upload more videos your physics is beyond from this universe you are amazing 👏
You prove physics os love ❤ 😍
Thank you for your kind comment Sawinder :-)
Very easy to follow but very informative.
Well explained, had difficulties understanding this phenomenon previously
Hello Egbe, so my work has reached its objective then! I am glad I was able to help!
Though I watched your videos now, as a physics student who always has questions, my dream is to communicate with you doctor.
I hope I will achieve my dream and ask you doctor, with my all respect to you❤️
Hi Hassan, you can always check out my tutoring website to know how it works (physics-tutor.nl/), but I have to tell you that my teaching agenda is currently full for the next few months...
Informative video
What a video sir. Fantastic.
Thank you Rajesh!
For the first time I got a clarity about electromagnetic wave
Thank you for letting me John. It encourages me to read your words!
Excellent explanation, thank you
nice video, no one has explained me electromagnetic waves this easy.
Thank you for your comment hemalpatel, I am glad my approach was useful to you.
I must say this vdo is quite short and at the same time informative too along with an intuitive understanding 👍
Thank you Samishka :-)
Great video sir 👏👏
Your lecture is awesome.
Thank you for your kind words Sharda. I am glad you appreciated it :-).
Intelligently explaining the concept of EM. I have one question: Do EM waves we generate have mass and are EM waves use air particles as medium when they are transmitted from the source to the destination?? Thanks!
Hi Jehan,
Within a classical physics context, EM waves are the propagation of an electric field fluctuation . No information can travel faster than the speed of light, so the speed is that of light. As the speed of an EM wave can be measured as being that of light, it cannot have any mass, but it does visualize the transport of energy (so according to General relativity, spacetime will be affected by the EM wave, the same way mass does)
Because of the delay due to the limited speed of propagation of information, the oscillations of the charged source ends up with the shape of a wave propagating from the source. In other words, it is not something that is material, and therefore does not need a material medium (like air particle) to propagate.
I love the way he says cosine 1:10
Thanks too much I am from Egypt this is the first time I understand how how lamp works and antena
Hi Amarbadran. I am glad you enjoyed the video and that it helped you understand how an antenna works.
Please note that this is not exactly how a standard lamp works... the concept in the video works for low frequency EM waves like Radiowaves or microwaves.
But if you tried to do this with visible light, although conceptually correct (it is the acceleration of charged particles that generate light), other phenomena would come into play and the experiment would not work.
If you want to know how light is emitted by the sun or by a light bulb, check my videos about black bodies.
@@PhysicsMadeEasy I will see it thank you for making physics simple and interesing
Loved it. Clearly explained in such a short span!
Hi Vanshita, thank you for letting me know you enjoyed the video :-)
Outstanding Video!
Thank you Samiul
Thank you sir.
well explained. Science shall be made easy
... because approached / explained the right way, it is!
NICE EXPLANATION,
1] BUT AT 01:50 THE SECOND BAR WERE PLACED IN THE ELECTRIC FIELD SO THEY CAN TRANSMIT SIGNAL IN THAT CLOSER DISTANCE BETWEEN THEM, WHAT IF THE BAR IS PLACED TO FAR AWAY, AT SUCH DISTANCE THAT THEY ARE NOT IN THE FIELD, WILL THEY STILL TRANSMIT SIGNAL, HOW?
2] WHY ALL ELECTROMAGNETIC WAVES PROPAGATES AT THE SAME SPEED IN VACCUM REGARDLESS OF THEIR ENERGY. FOR EG, THOUGH THERE IS MUCH DIFFERENCE BETWEEN ENERGIES OF GAMMA RAYS AND RADIO 📻 WAVES, THEY TRAVEL AT THE SAME SPEED, WHY?
3] FROM WHERE DOES THESE ELECTROMAGNETIC WAVES/RADIATIONS GET ENERGY?
4] WHAT IS THE DIFFERENCE BETWEEN 'ELECTROMAGNETIC WAVES' AND 'ELECTROMAGNETIC RADIATION' ( I AM ASKING THIS QUESTION BECAUSE WE USE THE TERMS VELOCITY AND SPEED INTERCHANGEABLY WRONG, SO DON'T WANT TO BE WITH ELECTROMAGNETIC MAGNETIC (WAVES "OR" RADIATION)
WAITING FOR ANSWER.
Hello Swap,
1/ Well if you move away from the transmitting antenna of a radio station, you’ll end up having trouble receiving your favorite radio show ! The signal will get weaker and weaker and then wil get lost in noise.
Concretely, the energy of the EM wave decreases as the inverse square of the distance.
2/As you know, the speed of light is invariant. Using classical physics, one can show that the energy carried by an EM wave is related to the amplitude of the oscillation of the electric field and the pulsation of the wave (or frequency of the wave). Using quantum mechanics, it depends on the density of photons and their associated frequency.
3/ The source of an EM wave is an oscillating charge. An oscillating charge implies an oscillating force applied to it. The work provided by that force to the charge is the energy source of the EM wave.
4/ The difference is not physical, just semantic. When considering classical physics, one should use the term EM Wave. When considering quantum physics,, one should use EM Radiation. Physically, these describe the same phenomena, the difference is just a question of perspective.
Oh, and consider using small caps when writing. Large caps means that you are shouting or screaming. Physics is a subject that should always inspire coolness ;-)
Thank you sir short and sweet
Awesome explanation.👌
Thank you 🙏
I am glad you enjoyed it Paruthi, Thank you for your kind words
Your channel is worth 1 billion subscriptions.
A billion? That's 1 person out of 7 in the world... haha! If 1 person our of 7 would be the kind to enjoy physics (= making efforts to understand how nature and our universe works), the world would be a much more peaceful place :-)
Thank you so much for this amazing video.
Now I have a base understanding of how electromagnetic wave works.
Great Mint, I am glad I could help
@@PhysicsMadeEasy I want you to know that You are an amazing teacher ❤.
Thank you for this information.
Thank You for this easy to understand explanation..
Great explanation
This by far best explanation about EMW.
Thank you for it...would you name that progressive music in the outro ..??
You are welcome.
About the music, I actually have two hats... I am a physics teacher but also a music producer, so I just pick in my own catalogue for video music backgrounds. You can hear it on the site of one of my editors if you are curious. (www.audiosparx.com/sa/summary/play.cfm/crumb.2/crumc.0/sound_iid.933939).
Thank you for the explanation, sir. Definitely sharing this video and channel with my friend.
Hi Moe, I am glad you enjoyed it and that it was useful to you!
Great visualization
Thank you Rohit.
Yes I enjoyed the video..
Nice explanation sir !
A big salutation from Morocco !
Hi حرية كرامة , Thank you, and salutation from France!
Great illustration and explanation! Now, if I use direct current to heat a filament and produce light, what determines the frequency of the electro-magnetic waves?
Hello Christopher,
The filament will emit light not because of the oscillations of the AC current passing through it, but because that current heats the filament. The light bulb is made such that heat has trouble dissipating away (The bulb is under vacuum). Consequently, The temperature of the filament rises, and the filament acts like a black body emitting light for which the maximum intensity is for a wavelength that is inversely proportional to temperature (Wien's law). The integral of that intensity over all wavelengths (i.e. the total intensity of the light), depends on the 4th power of the temperature (Stefan Boltzman's law). Check my videos on black bodies if you want to know the details.
ruclips.net/video/EWqzg0iqNtw/видео.htmlsi=wgU6NqsGRhPvcbyM
ruclips.net/video/ugsvADj1wts/видео.htmlsi=OPKRAxa9AQ_QGFXz
You literally made it easy 🌀
Thank you for letting me know that my channel is reaching its goal :-)
Very nice video sir. Even I am not in physics background I love to watch your videos in my break time
That's wonderful Suhas! Physics is a fascinating topic when you get the basics. I am glad that you see it as a hobby, and that it provides you intellectual breaks in your daily life :-)
I think that even dc current through a wire can make a magnetic field , and even heat (IR) and light if the current is high enough. Many things to consider , and your vid helps.
Wow cool. It took me 37 years to begin to grasp what light actually is.
Better now than never Akextremerickert haha! How did it make you feel to understand that?
Please note though that this is just one of the two main interpretations (that of classical physics).
Your amazing 👏 work and you answer my questions thank you 😊 hats off to you
I am glad my video helped Sawinder
This is excellent, thank you.
You are a magnificent maestro!
Wow u are such a good teacher.
Thank you Chris, Encouragement are warmly appreciated in the RUclips Jungle!
Well explained
You are an amazing explainer.Keep doing such work that can help us.Thanks a lot for making.
Hello Nazmul, thank you for your kind words. They encourage me!
And u encourage me to learn more.