My Physics improved from 50% on semester test 1 to 97% on semester test 2🎉🎉 Thank you sir, I have nothing to offer. I’ll thank you properly in the future.
2:22 when the wave is opposite phase and both waves are travelling in *opposite* direction , waves do not cancel out each other but they form a stationary wave. Waves will cancel out only when they are traveling in *same* direction.
They may cancel out each other. Please watch Walter Lewin's lecture on Resonance. Standing wave is the net result we behold. But the waves cancel out each other between the positive maximum and negative maximum amplitude (think of a fundamental frequency wave).
No? They cancel out during the standing wave phenomena when they overlap. Also since these are single pulses they will never converge again so no standing wave emerges.
I loved this explanation! Thank you! It opened my mind to so many things. I meditate for the last 5 years, and I have heard so many videos about our body frequency, how to raise our vibration, how we interfere in each other with our energy. Why we like some people right the way, while others, we do not like. And now listening to this video, I start to think, we are atoms, energy, we are waves and particles at the same time, so we interfere with each other creating constructive and destructive waves. It blowed my mind to understand us in terms of physics, in a microscopic level. Also there are so many videos here in you tube of healing music to heal all kinds of emotional and physical disturbances, to decrease anxiety, lower blood pressure, improve sleep, etc, music affects us with its sound vibration, and the vibration of songs interfere in the water of our bodies.
Thank you sir.... Respect from your online student from Bangladesh!!!! May God bless you sir.... অসংখ্য ধন্যবাদ স্যার, আপনার প্রতি রইলো শ্রদ্ধা। সৃষ্টিকর্তা আপনার ভালো করুক।
1st) In the case of destructive pulse interference, when in the segment where the two pulses interfere destructively what's the thing that causes each pulse to continue on its way? I know it happens, but I have no idea why. If I try to think about it there's a segment where the two pulses energies were destroyed, so it seems like they shouldn't be able to propagate after that. It's the same with constructive interference of course, but in that case at least there's the energy in the twice-as-high peak that would carry on the momentum. But what carries the momentum in the case of destructive interference? And 2nd question ~ 4:34 you mention diffraction of a wave thru a slit. You also mention that the produced (circular) diffraction is kind of interference pattern, but if the diffracted circular wave still only have uninterrupted sequence of peaks & valleys isn't it just a wave that just spread its propagation direction (just like a stone in a lake produced circular waves). But the main question is, in a simpler case - light in vacuum meets not a slit, but just one edge (imagine it like the razor's edge in Schlieren photography) light would still diffract on that edge and would start spreading in circular direction behind the obstacle ... but why? Also isn't the slit scenario just a case with two (close) edges diffraction, and the interference that we might observe is the interference between the two produced circular waves (with centers offset by the distance between the edges)? And if so, isn't the spread of light behind a narrow slit just the effect of that diffraction (& interference) and not (as many people claim) caused by Heisenberg Uncertainty Principle - that making the position of light more precise (by narrowing the slit) results in higher spread of its momentum? If the HUP people are still correct, then how would you explain the light from a nano-laser? I see currently some of the smallest nano-lasers are between 50 and 150 nm, which is considerably smaller than most slits used in said demonstrations. Certainly having the position fixed several times narrower would produce even higher spread of light? ... but it doesn't. My whole point on the HUP-aspect of light thru narrow slit is that it's a produce of diffraction on obstacles and not result of us knowing anything about it. If you really think about it, we KNOW that a light in a beam is made of many, many photons travelling in coherent linear manner. Hence if we just select to consider one of these photons in the whole beam we know it'll travel in straight line (if it doesn't interact with anything else), so how would that precise knowledge (about a position of a photon) cause it to spread (w/o hitting anything and travelling in vacuum)? I know of the described phenomena, I'm just trying to understand them as much as possible. Thank you!
The letter "i" in the word "diffraction" is pronounced just like it is in the word "differ". Not like the word "die" 4:50. Otherwise I liked the video.
From Calc 3 to Physics 1a, nice to watch 5-10 minute videos rather than 30. Thank you prof Dave
Am I the only who ALWAYS sings along with the intro song?! It's so ICONIC! Makes me excited for the video.
you’re not 😭😭😭
Mee too 🤣😁
Count me in 😅😅
you're not alone 😆😆
oh my gosh!!! thought I were the only one
Thank you Physics Jesus
Literally looks like Jesus lol
@@movpod5901 so you're telling me jesus is a white man.
@@z3nkin no of course he's fucking blue
i sleep lol
Prophet of juses love
my man’s is gonna have the last supper after this LMAO
rofl
¡Gracias!
My Physics improved from 50% on semester test 1 to 97% on semester test 2🎉🎉
Thank you sir, I have nothing to offer. I’ll thank you properly in the future.
Wowww good job 👏👏
Wow! That's amazing! Remember to thank yourself too as you remember what you learnt! Memorizing is hard (for me).
thanks a lot professor Dave for your amazing video!
2:22 when the wave is opposite phase and both waves are travelling in *opposite* direction , waves do not cancel out each other but they form a stationary wave. Waves will cancel out only when they are traveling in *same* direction.
They may cancel out each other. Please watch Walter Lewin's lecture on Resonance. Standing wave is the net result we behold. But the waves cancel out each other between the positive maximum and negative maximum amplitude (think of a fundamental frequency wave).
No? They cancel out during the standing wave phenomena when they overlap. Also since these are single pulses they will never converge again so no standing wave emerges.
I can not tell you enough, how much I appreciate your videos! Love the comprehension at the end.
I got one of the best science explanation channel... ✨
Appreciation from India🇮🇳...here's ur one more student😊🙏🏻
I loved this explanation! Thank you! It opened my mind to so many things. I meditate for the last 5 years, and I have heard so many videos about our body frequency, how to raise our vibration, how we interfere in each other with our energy. Why we like some people right the way, while others, we do not like. And now listening to this video, I start to think, we are atoms, energy, we are waves and particles at the same time, so we interfere with each other creating constructive and destructive waves. It blowed my mind to understand us in terms of physics, in a microscopic level. Also there are so many videos here in you tube of healing music to heal all kinds of emotional and physical disturbances, to decrease anxiety, lower blood pressure, improve sleep, etc, music affects us with its sound vibration, and the vibration of songs interfere in the water of our bodies.
Can't stop laughing 🤣
Thank you sir.... Respect from your online student from Bangladesh!!!! May God bless you sir.... অসংখ্য ধন্যবাদ স্যার, আপনার প্রতি রইলো শ্রদ্ধা। সৃষ্টিকর্তা আপনার ভালো করুক।
😎😎😎
bangladeshi here brother.
First best video on YDSE I ever found on youtube. Thats great.
A very easy and concise explanation, thank you Sir.
Thank u Professor Dave
By far the best video
1. Constructive interference
2. Destructive interference
right!
Too informative,easy to understand....thanks for such video
Super useful, thank you!
Nice video sir...very helpful...Thanks you..
0:39 “Because of a thing called physics” -LeMillion
Pov: exam is tomorrow
Exam is tomorrow morning and it 1:02 am I fuck my self on this yt channel o***** completed
Thanks a bunch, Professor! You are awesome
thanks a million professor Dave!
Thanks Dave this was helpful and short.
Thanks a lot professor Dave!
I'm not being picky, just trying to learn. I thought difraction was pronounced 'dee..' as in DI-ferrent. thanks for the video
I believe it is. Not dyefactrion like he says it
Thank u sir. Love from Nepal😍😍😍
Np❤
Excellent, Prof. Dave
Very helpful🙏🙏🙏
thanks again 😊
Thanks Dave😊
Great explanation
Thanks I had a quiz on this this morning, really solidified my understanding
Thank you so much!
Sir, you are a great help!
Prof u'a actually amazing. U clarify in short time marvelous. Buh it gonna if u can attach calculations
succinct yet clear. He's seems to posses a deep understanding of the subjects; which I hope I'll someday achieve.
He’s literally jesus
thank you professor
Thank you too much professor Dave i understood now😊😊
Constructive interference and destructive interference 5:28
Amazing tutorial!
Awesome video 👍
you're much better than tutorials in my native language
thank you professor you are amazing from high school till varsity ✊
It would be awesome if you also went thru newtons method for calculation of the speed of sound and laplaces correction!!!
U are a life saver ❤
amazing explanation
Gotta play the intro at least twice.
Nice teacher
You sir. You are a legend.
Many many thanks sir
Thank u Professir Dave.
Love from KSA
Thanks sir😄
Your One more subscriber
Love from India 🇮🇳.
Great content
Professor Dave can u record a tutorial explaining optics (ray diagram , thin-lens&magnification) ?plsss I need u
Thank you(:) You are great phisician-teacher😊 Videos are 👍
With due respect its physicist not physician! :-)
It's amazing.... clearly explained everything in just few minutes .
Mega god Video, elsker dine videoer babe
And you are very good in teaching sir and I like it very much🎉😊
Thank You
thank you so much! i just learned a ton in just a few minutes
Thanks very much
Physic: matters can't overlap
Footballer: ah ah I don't think so
Professor Dave! THANK YOU!
This topic is interesting, explanation from dave sir is much more interesting. Thank you sir
Thank you, God bless you 💕
Thanks sir🙂
Very helpful tutorial this video clear all the confusions i face in these topics :)
Respect you sir from andhrapradesh(india)
Wtf why are u telling us where ur from
U are very good in teaching.
Hi, I've got some amazing news that you'll be thrilled to hear!
Hey Dave, could you please explain the resonance propogation of a bell, or other non uniform object please?
Thanks.
Thaks sir
Hey prof, daveCan u plz make a video on equation of waves.And show its applications on different waves
Thankyou so much sir
Iam watching you from kurdistan bravo master ❤❤❤❤❤
Great video. Thank you for sharing your perception.
1st) In the case of destructive pulse interference, when in the segment where the two pulses interfere destructively what's the thing that causes each pulse to continue on its way?
I know it happens, but I have no idea why. If I try to think about it there's a segment where the two pulses energies were destroyed, so it seems like they shouldn't be able to propagate after that.
It's the same with constructive interference of course, but in that case at least there's the energy in the twice-as-high peak that would carry on the momentum.
But what carries the momentum in the case of destructive interference?
And 2nd question ~ 4:34 you mention diffraction of a wave thru a slit. You also mention that the produced (circular) diffraction is kind of interference pattern, but if the diffracted circular wave still only have uninterrupted sequence of peaks & valleys isn't it just a wave that just spread its propagation direction (just like a stone in a lake produced circular waves).
But the main question is, in a simpler case - light in vacuum meets not a slit, but just one edge (imagine it like the razor's edge in Schlieren photography) light would still diffract on that edge and would start spreading in circular direction behind the obstacle ... but why?
Also isn't the slit scenario just a case with two (close) edges diffraction, and the interference that we might observe is the interference between the two produced circular waves (with centers offset by the distance between the edges)?
And if so, isn't the spread of light behind a narrow slit just the effect of that diffraction (& interference) and not (as many people claim) caused by Heisenberg Uncertainty Principle - that making the position of light more precise (by narrowing the slit) results in higher spread of its momentum?
If the HUP people are still correct, then how would you explain the light from a nano-laser? I see currently some of the smallest nano-lasers are between 50 and 150 nm, which is considerably smaller than most slits used in said demonstrations. Certainly having the position fixed several times narrower would produce even higher spread of light? ... but it doesn't.
My whole point on the HUP-aspect of light thru narrow slit is that it's a produce of diffraction on obstacles and not result of us knowing anything about it.
If you really think about it, we KNOW that a light in a beam is made of many, many photons travelling in coherent linear manner. Hence if we just select to consider one of these photons in the whole beam we know it'll travel in straight line (if it doesn't interact with anything else), so how would that precise knowledge (about a position of a photon) cause it to spread (w/o hitting anything and travelling in vacuum)?
I know of the described phenomena, I'm just trying to understand them as much as possible.
Thank you!
Thank u so much sir
wheres ur modern phy course? i was here for difraction part only
love this explanation better than my prof's
Very thankyou sir
Thanks Avi
thanks a looootttt very very usefulll
wowwww! Thank you!
great work bro😘
THANK YOU SO MUCH
thank you physics king
He explained it better than any other teacher out there
THANK YOU professor
thank you so much!!
Thnk u sir, very good video
my grades are saved
Thank 's sir
When amplitude adds up is it not called resonance?
The letter "i" in the word "diffraction" is pronounced just like it is in the word "differ". Not like the word "die" 4:50. Otherwise I liked the video.
Thanks Dave, it would be better if you could relate it with the properties of light 😀
Top G
thank u so much