Waves - Frequency, Speed, and Wavelength (NEWER vid)
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- čas přidán 27. 08. 2024
- Check out this simulation I put together using Scratch that shows that changes to wave speed DO NOT affect frequency! scratch.mit.ed...
TABLE OF CONTENTS:
2:32 - What determines the frequency of a wave?
3:36 - Does "higher frequency" mean "faster waves"?
4:56 - What happens if a wave's speed changes? Does frequency change then?
5:50 - How are frequency and wavelength related?
6:54 - Mathematical relationships
8:15 - Practice problems
Thank you so much. Most teachers don’t realize how important it is for students to understand the complete THEORY of the subjects they teach. You’re amazing.
Thank you very much! 😀
Amen, it all becomes memorization and there is no real comprehension!
I listened for exactly 1 minute and a half, and I decided to write this review. This instructor is simply put outstanding outstanding in his simplification of a concept, explaining it in the most simplistic format, truly gifted individual.
I never expected anyone would make us understand in such a manner...was searching for the same...plus your presentation is something to be observed.Thankyou man.Love from IIT Roorkee , India
Brilliant. I wasn’t permitted to sit ‘o’ level physics as I failed the mock exam. The reason? Abysmal teaching. Loved learning this (& by the way all of my answers to your questions were correct! ) Who knows, if I’d been taught by the likes of yourself my life would have been very different. Am now going to pass your teaching on. Thanks 😊
You know what?
I am an autodidact and I am trying to know the "art of first principle",
I don't just wanna cram or memorize things, I want to intuitively understand what science truly is and all the tools therein..
I have been really struggling with the intuitive idea of phenomenon like " frequency" and how they say " the speed is the same, even if the frequency is different, I couldnt wrap my head around it.. but for the first time, this video of your is the ice-breaker... I had an eureka moment!.. it's almost as if an epiphany, a moment of full awakening!
Eureka!!.. I got it!..
Everything comments and makes sense to me now...
Thank you very much..
Thank you so much, sir! It was a very good presentation. I easily got it all familiarized. Wish we have more teachers like you in our university!
Thank You This helped me understand the relationship of WaveSpeed, Frequency and WaveLength in a v conceptual way
An indian preparing for jee and this helped me to understand and this was real killer visualisation , THANKYOU so much sir
I could not be more thankful..this is the best video out on yt that clears the concepts that we thought had a grip on..thankyou amazing teaching
Thank you kindly for this basic explanation on wave lengths and oscillation. I'm learning about the Schumann Resonance, as our planet's frequency is constantly accelerating.
Fantastic explanations and visuals. Thank you for all the work you put into creating this. This is the first channel I've subscribed to in a decade of poking around CZcams.
Thank you very much! I really appreciate that!
This just really helped to understand rf freq and wave lengths ...thank you
Phenominal video, this deserves far more recognition. thank you sir
Thank you too!
The car analogy really cemented the whole concept for me
this is the best thing i ever seen that car example.... just put everything together for me i cannot thank u enough
Thank you, thank you!
I've needing this video my whole life. So clear to understand
SIR YOUR TEACHING WAY IS AWESOME I LOVE IT.YOUR INDIAN FAN'''''''
Thank you very much!
Nice explanation
This is very well done video. Very nice graphics and useful information. There is a small idea that it looks to me is inaccurate which is that the wave speed does not change with frequency. In fact it does (f=v/lambda) as they are proportional one to each other. The confusion lies that the cases that are being presented are for variation of frequency and lambda, while keeping velocity constant.
For example we can have velocity v as a constant by the multiplication of two different values let's say f1*lambda1 and f2*lambda2.
On the example: f1 = 3Hz and F2 = 1Hz. Therefore to keep the velocity constant then the wavelengths should be lambda1 = lambda2/3. Thus, f1*lambda1 = f2*lambda2.
3*lambda1 = 1*lambda2 = 3*lambda2/3.
You are correct Alberto, this is a good video but the speed does in fact vary with change in frequency. As seen in the equation presented in his own video. If you keep the speed constant then the other components must change to accommodate.
Thanks for watching! Actually, wave speed is determined only by the properties of the medium that the wave propagates through. Yes, mathematically you can change wavelength or frequency and see a change in velocity by keeping the other variable constant. In reality, however, the only change that can be made to change wave speed is by changing the medium. Changing frequency by somehow modifying the wave source only results in a change in wavelength to reconcile the proportion. Unless the medium changes, you wont see a change in wave speed. If you change the medium that a wave propagates through, assuming a constant frequency, then you'll see wavelength change as a result, with frequency remaining unchanged.
Very well explained and very intuitive, can you also make video of the relationship of wave energy and frequency.
Thank you you really helped me to understand wavelengths
Thanks for clear explaining. From srilanka
Someone show me how to like a video a billion times at once, @SirJohnwhite you are awesome just know that. The world needs more teachers like you.
Thank you so much for this!
Thanks very well explained!
Thank you much for this. Continue to teach my friend.
Thank you!
Davvero molto chiaro!
Osum explanation ❤
This is actually a really great lesson, thank you so much.
great explanation and demonstration sir.
Great explanation thank you from 🇹🇷
Excellent presentation!
Thank you very much my sir.I might be late watcher but this truly helped a confused mind .stillmake more videos
Really best simulation my friend keep growing ...❤️
What simulation software did you use?
Wow!!! This is exquisite. Thank you so much
Glad you like it!
Sir love from India
For anyone that wants to for an opinion with me how many forms of oscillating waves could you create with only one hertz and instead changing the amplitude and energy focused on the current understanding of law of conservation of mass and energy where increasing energy decreases mass and decreasing energy increases mass and how would you modify those properies with increasing or decreasing amplitude? And how would this understanding of the electromagnetic spectrum effect the equation e=mc2 ?
thank you from egypt❤
how to i find out how many seconds are in one cycle if im looking at a graph?
Superb work sir 👏👍
i am pakistan and you explain it in very easy way
thanks from Turkiye
Amazing analogy sir. Thank you. I have a question...so when you say source of wave increases the frequency....does this also implies that the amplitude increase the frequency of a wave,that is 'the greater the amplitude of a wave,the greater the frequency
thank u mr white ! i learned a lot
i am going to get my license but the book does not provide enough information to know how to find out the frequency.
So the slower medium causes a bigger phase shift in a material
This video is sick
How can it become slower without changing the medium ?
Can someone please tell me why is the frequency of oscillation of the electromagnetic fields responsible for the energy of a wave and not it's amplitude. Amplitude is determined by the amount of disturbance in the electric field and the frequency is determined by the rate at which these one complete cycle of this disturbance takes place in the electromagnetic field.
Does wave Amplitude represent Power?
I am trying to understand if my microwave opperates at the same frequency as my router why can't I cook food with my router.
What property is Power that that a wave with the same frequency, wavelength and speed... can do more damage?
I thought Power was about energy per second... but frequency is already determined?
(This is one of the clearest and concise wave property videos I have come across - thankyou.)
Thanks for the video. At the end of the video I might be thinking that if I have the same wave source for two different waves and the waves are travelling through the same medium, then they should have the same wavelength. I don't say the following for the reason of trying to contradict you but only to ask for the explanation/information needed to understand: why then do we have a large spectrum of wavelengths from the sun? To further narrow this down, let's just take visible light spectrum: the source is the sun, it travels through the same space and atmosphere but we have different wavelengths of light that our eyes can respond to as sensations of different colors. What is going on with these waves to make them systematically have different wavelengths being from the same source and travelling through the same mediums?
HI. so why do sounds are perceived lower in pitch in water, although the frequency doesn't change?
It depending on the energy we use because heat , emf , gravity, sound , are all different
Hi . please tell us where Can be found the animation software use in this video . Thank you
what is the simulation called?
At 5:04 what happens when upper wave gets slower and bottom wave gets faster then also frequency will remains the same..??
Yes, because for frequency to change, the source would have to oscillate faster or slower to change how many waves occur each second. If a wave can travel faster through a medium, its wavelength becomes longer. Imagine drawing a wave on a sheet of paper that is being pulled away from you. You move your pen back and forth perpendicular to the motion of the paper as it moves away from you, which draws a waveform. Now imagine the paper gets pulled away from you even faster. As you draw, the ink is moving away from you faster, but your arm did not change its up and down speed. The result is a longer waveform, but if you count how many total waveforms you draw each second, it remains the same.
How would you explain wavelength size? Like when they say that a certain wavelength is too big or too small to go through an object, which in turn becomes and insulator.
How can this be visualized because I can't come up with a visualization in my head.
so what happens to a radio signal sent by a spacecraft traveling at the speed of light? if radio waves travel at the speed of light, then all of my transmission is going to be static at the point I sent it? and traveling forward at the same speed I am?
Thank you sir, this simulation helps me a lot to understand the relation b/w Wave speed, wavelength and frequency.
Good video, bravo
Ether and ozone also effect and water wave and sound and light are all different I think
New sub. And enjoyed this video.
THANK YOU SO MUCH
Thank you God bless you
Thanks sir, excellent explanation. Question sir, does higher frequency needs mechanical # electronic energy to make the source produce such high frequency.?
@Jon White
1 - @8:41 "A radio signal (a type of light wave)" - A radio wave is not a type of light wave! Radio is radio and light is light! They are two different things! Both of them are part of a greater thing called electromagnetic radiation (you need to say). Don't mislead the people! If you do not know something, it is better not to talk than to mislead the people just for the sake of money!
2 - Most of the youtubers forget that the waves have another property of the same importance as the frequency, the wavelength and the speed. And that property is called amplitude. Most youtubers, when "teaching" about electromagnetic radiation, say "longer wavelength EM waves have lower energy and shorter wavelength EM waves have higher energy", and they draw, in both cases, the amplitude of the EM waves equal to the wavelength of the respective waves, misleading the people. In the case of shorter wavelength EM waves they forget to draw the amplitude greater than the wavelength of the wave. And the people start scratching their heads asking themselves
: "where the extra energy comes from? It seems the shorter wavelength EM waves have lower energy".
You dumb bro how much money would he get from 1.1 k subscribers I'm sure he must have not remembered it have patience
Hey amazing video 😍😍 love from India .I have a question, is there no role of the pitch or amplitude in deciding the wavelength and frequency especially..
The pitch is determined by the frequency, but amplitude is related to volume/intensity of the sound.
Thank u sir..
Before watching this video lemme write what i know ..
Velocity of a wave depends on both wavelength and freqiency ...
So higher velocity may mean higher wavelength ...
Or higher frequency ...
Or both ...
And frequency ofcourse depemds on source ...
And velocity on a particular string is actually cpnstang ....
So i guess if he is going to talk about same string then increasing frequency would reduce wavelength and so velocity should be constabt ...
Lets see
Velocity of the wave only depends on the medium its moving through. The wavelength will depend on the frequency of the wave and the velocity of the wave. A higher velocity wave will result in a longer wavelength if frequency is unchanged. Frequency is determined only by the wave source.
Thanks sir
Appreciate
The weak point of simulator is that if the programers lack to mathematics modeling skill then we got hallucinations of wrong display
Hello there. I think you are not understanding what is fast and slow. Because you say that and sows that the peaks of the two wave forms troubles at the same speed but to a cycle to be recognized on its form have to be read entirely. Buy the time the long waveform reach the end of the cycle the faster one was recognized 2 times... that is faster. You have to pass your entire body to be granted