I have been searching for over 50 years for an explanation of simple wave characteristics that would open up the rest of physics to me. This presentation has achieved that. I am so, so grateful for this experience and can barely restrain my excitement in hoping that the other videos will do the same. Fine teaching is among the greatest gifts one human being can give another!
Thanks, I'm very glad it was helpful! However I should warn you that the model in this video is a simple mathematical wave function, which, while light conforms to mathematically, is missing a few details, an important one being that the wave oscillations quickly diminish from the center down to zero. If you picture a group of waves representing a single photon, say 9 waves, it would have a maximum amplitude at the center, and the amplitude quickly diminishes to zero with the 4 waves on either side of the maximum, all of which are in a 2-dimensional plane in line with the direction of travel. This explanation is not really necessary to understand light-as-wave function, but just wanted to let you know it has been simplified, and there are more sophisticated models out there.
Sir, by your teaching I was able to understand the concept of "Frequency, Wavelength, and the Speed of Light".You are helping a lot of students with your video. Keep making such amazing videos.😇
i usually never comment on any youtube videos but i am literally thankful to you sir cause i was really frustrated with this topic and my exams are around corner 😇
Fantabulous video and the best digramatic explanation of the concept. As a student at present I am very fortunate to have seen this . Thank you so much Sir😊👏🏿
I am forever grateful to you sir! At this exact moment, at 5:57 in the video, I FINALLY understood what is going on in my chemistry class. Wavelength is METERS Frequency is PER SECOND Speed is METERS PER SECOND
I have a question. Radio waves are made of electromagnetic waves, as are visible light waves. I know how to create and transmit radio waves. In fact I have built radio wave transmitters. Is it possible to create visible light waves with a transmitter similar to a radio wave transmitter? How? And if so, can we transmit visible light waves efficiently enough to shed those waves onto solar panels 24/7 and surpass zero point energy?
From what little I know about generating radio waves, which I believe is via AC current operating at around 1 to 300 Hz and transmitting that as an oscillating current in an antenna, which is what produces the wave. So really it would be increasing the AC to the frequency of visible light, which would be between 420-750 x 10^12 hertz. Not sure if one could build a device like that, and also seems like it would generate a lot of heat.
@@CrashChemistryAcademy yes, I thought the same thing about the heat. If the device could exist then I assume it would need an extreme nitrogen style cooling system.
this is amazing!! i hv watched more than 10 videos on relation between wavelength, frequency and speed of light but this video is the most satisfactory perfect explanation sir thank u so much💗💗
1:01 "A wave cycle is a single up-down motion" shown: down-up motion... In other places, waves shown to start downward. Sure, they oscillate, but "traditionally" they shown starting upward.
I have a question, when light travels through water, does it keep the the same speed, I know refraction has an impact on wavelength, does it mean it will accelerate the frequency to keep speed a constant?
Ben Grizzly Adams , I think speed of light depends on environment. The professor described speed of light in vacuum , but in water it gonna have lower speed I guess
@@mykhailoshpakov6487 Well, it will have to depend on environment as it seems to reacquire energy when changing means, and it would not make any sense if there is a finite quantum of energy in each photon. (Also how would it travel for billions and billions of light years??) So you have to look into where it acquires that energy from. Is there some form of underlying substrate that gets inducted as opposed to self standing particles? I'd be more incline to think that.
Most excellent video it helped me immensely in my grasp of things in life and nature WOW i can apply this to the world around me thank you so much and also i subsribed to you so god bless
A vibrating cord with a 2 meter wavelength supports a 10 kg load at a frequency of 300 Hz. If this cord's wavelength was shortened to a length of 1.5 m, what force will produce the shortened wavelength but of frequency 200 Hz?
How do you compute the force on vibrating cord to change both frequency and wavelength with a mass is supported by it? My first sight for this is work-energy method but when I did this, it didnt work. Here is the sample problem for this
Sir, Your videos are outstanding. I watch your videos regularly. Many doubts on Physics were cleared through your channel. Sir it is a request, would you kindly make a video on how Max Planck really derived the value of his universal constant. There are many videos available but nobody reached that point what I am searching for. His actual experiment and his method to derive the constant. Thanks
I like your suggestion, and I may make a video on this, but there was no experiment that Planck did. Planck "discovered" the constant as a way to fix a mathematical flaw in the expression of energy in black body radiation. The math of black body radiation of that time (1900) showed that it would reach infinite energy in the ultraviolet range, which of course was not possible, and Planck found the number that when inserted into the math fixed the problem, which became Planck's constant. It was five years afterward, in 1905, that Einstein showed Planck's constant to represent something real through his experiment about the photoelectric effect, for which he won the Nobel Prize. Planck himself was skeptical that the constant represented any physical reality until Einstein's experiment. That also prompted the Nobel committee to give Planck a Nobel prize, in 1918, three years before Einstein received it.
Can you do a video explaining "Why Light slows down when traveling through Glass!" But it can then "re-speed up" when it exits the glass? how does this happen and why? Also: Does the speed of light stay constant when traveling through the glass medium? Meaning does it keep getting slower and slower through thicker glass or does it stay at a constant slower light speed. (assuming the glass is equal temper all around) Thanks Nik
Great questions! I wish I knew more about this. I have looked for answers to these questions for a few years and have found that there does not seem to be concrete agreement among physicists about the mechanism for light slowing in a non-vacuum. Also, I do not think your question of the constancy of the speed is really answerable since the speed of light going through a transparent medium like glass is measured from the point of entry to the point of exiting. I imagine someone has tried to measure light speed within the medium, but I have not seen anything about it. Food for thought!
@@CrashChemistryAcademy Yes, I too am having trouble finding these answers as well.. It would seem like these answers should be common place. Odd they are not. - Aether force -
ok understood but what is bandwith? also does a single wave of light travelling through space undisturbed continues to have the same wavelength? and are 300nm and 301nm two different waves or colours,is that how it works?
bandwidth refers to the amount of data transfer or signal processing, usually within a wire or other medium transferring data from one device to another. The term "width" comes from the fact that a larger diameter copper wire will have less resistance to electron flow than a narrow diameter wire. Although there are now many ways to improve bandwidth, increasing the diameter of a wire or a fiber optic cable is still one way of increasing data flow. If a light wave is undisturbed it will maintain its wavelength, even over billions of years. It will increase wavelength if coming close to large gravitational fields (called redshifting), and the expansion of the universe I believe affects the wavelength, but not quite sure about that last one. The difference in energy between 300 and 301 nm might be too small for our optic nerve signaling/brain processing to pick up, so it would likely have to be a larger change, so from 300 to 305 nm probably gives you a slightly different color-- not sure how sensitive our nervous system is to small changes. Maybe if the optic nerve had a larger diameter...
@@CrashChemistryAcademy ok because i always hear the words "bandwidth" , "line width" or spectral width" when talking about lasers , not sure if they are all related or have certain definitions ,i ready that bandwidth is a range of frequencies ,for example 532nm is one freq and 533nm would be another even if we cant discern one from the other since the colour is too close ,they only change by 1 nm increment? and lasers may emit more than one right? and narrow bandwidth would be something like a small range just like between 630nm and 632nm right and lasers are better at creating these narrow ranges or only one wavelength? yeah i heard about how when light from celestial objects are moving away they create a red shift ,im also not so sure on that
Being a chemistry teacher ,m just amazed after watching this. This is just superb.
Thanks so much. Comments from educators are always the most gratifying!
an excellent and clear explanation with good graphics and slow speaking. 10/10
I have been searching for over 50 years for an explanation of simple wave characteristics that would open up the rest of physics to me.
This presentation has achieved that.
I am so, so grateful for this experience and can barely restrain my excitement in hoping that the other videos will do the same.
Fine teaching is among the greatest gifts one human being can give another!
Thanks, I'm very glad it was helpful! However I should warn you that the model in this video is a simple mathematical wave function, which, while light conforms to mathematically, is missing a few details, an important one being that the wave oscillations quickly diminish from the center down to zero. If you picture a group of waves representing a single photon, say 9 waves, it would have a maximum amplitude at the center, and the amplitude quickly diminishes to zero with the 4 waves on either side of the maximum, all of which are in a 2-dimensional plane in line with the direction of travel. This explanation is not really necessary to understand light-as-wave function, but just wanted to let you know it has been simplified, and there are more sophisticated models out there.
Sir, by your teaching I was able to understand the concept of "Frequency, Wavelength, and the Speed of Light".You are helping a lot of students with your video. Keep making such amazing videos.😇
Very interesting thank you, I just need to watch it another 10 times to sink in... :)
I'm the same way
Lol same
😂😂
You're doing such a great work for students. Thank you for making the video.
i usually never comment on any youtube videos but i am literally thankful to you sir cause i was really frustrated with this topic and my exams are around corner 😇
Thank you!!!!!!!!!! It was super super helpful and I got a test tomorrow so plz wish me good luck
Good luck bro
James Leahy time traveler
@@oryon6662 ikr
What grade are u in?
@@oryon6662 v
This is exactly what I needed! Elegant and well-written, clear and concise...thanks a million
You’re welcome and thanks for the comment!
This is the best video ever period. I wish everything science can be simplified like this !
I'm Malaysian Citizen.. Proud with u to share the superb knowledge
Thank you! Hello to Malaysia!
thank you. great explanation
Thank you, so helpful. Needed a clear explanation of wavelength, frequency, and speed of light in order to study for ham radio exam and this helped.
I love that! You are so welcome! Good luck!
Fantabulous video and the best digramatic explanation of the concept.
As a student at present I am very fortunate to have seen this .
Thank you so much Sir😊👏🏿
Best video
I Don't get such an explanation anywhere
Nice video. I have a test tomorrow and part of it is on energy of radiation, and this made it so much clearer for me. Thanks, mate!
This is one of the best explanations I’ve ever watched
The best explanation I ever got!!! 💜💜💜
Thank u for clearing all my doubts sir!!!!
You're welcome!
Dude! You just saved me! AMAZING LESSON! THANK YOU
I am forever grateful to you sir! At this exact moment, at 5:57 in the video, I FINALLY understood what is going on in my chemistry class.
Wavelength is METERS
Frequency is PER SECOND
Speed is METERS PER SECOND
I'm glad it helped! often students get confused by symbols versus units-- always keep your units in mind
Loved this video.Nice representation!👍
Best explanation ever
Explanation is too good...made me understand the thing in no time..thx
I have a question. Radio waves are made of electromagnetic waves, as are visible light waves. I know how to create and transmit radio waves. In fact I have built radio wave transmitters. Is it possible to create visible light waves with a transmitter similar to a radio wave transmitter? How? And if so, can we transmit visible light waves efficiently enough to shed those waves onto solar panels 24/7 and surpass zero point energy?
From what little I know about generating radio waves, which I believe is via AC current operating at around 1 to 300 Hz and transmitting that as an oscillating current in an antenna, which is what produces the wave. So really it would be increasing the AC to the frequency of visible light, which would be between 420-750 x 10^12 hertz. Not sure if one could build a device like that, and also seems like it would generate a lot of heat.
@@CrashChemistryAcademy yes, I thought the same thing about the heat. If the device could exist then I assume it would need an extreme nitrogen style cooling system.
Thank you very much for this video! It was really clear and I really enjoyed the animation showing the moving of waves across a fixed point!
Thanks you for clearing all my doubles. Really all solutions in one video.
Thanks sir
Excellent explanation
Love from india ❤️
Love to India! 💖
Great Explanation
You are saving my life thank you so much, I wish my teacher taught like this
The animation and explanation is really amazing.
Thanks for the amazing video.
You're welcome!
Beautiful!!!! Thanks so much for posting. Very clear.
this is amazing!! i hv watched more than 10 videos on relation between wavelength, frequency and speed of light but this video is the most satisfactory
perfect explanation sir thank u so much💗💗
❤️
1:01 "A wave cycle is a single up-down motion" shown: down-up motion...
In other places, waves shown to start downward. Sure, they oscillate, but "traditionally" they shown starting upward.
This is perfect. Simple and straight to the point.
I have a question, when light travels through water, does it keep the the same speed, I know refraction has an impact on wavelength, does it mean it will accelerate the frequency to keep speed a constant?
Ben Grizzly Adams , I think speed of light depends on environment. The professor described speed of light in vacuum , but in water it gonna have lower speed I guess
@@mykhailoshpakov6487 Well, it will have to depend on environment as it seems to reacquire energy when changing means, and it would not make any sense if there is a finite quantum of energy in each photon. (Also how would it travel for billions and billions of light years??) So you have to look into where it acquires that energy from. Is there some form of underlying substrate that gets inducted as opposed to self standing particles? I'd be more incline to think that.
Beautiful explanation + appropriate graphic = complete knowledge ❤
One of the best explanations.
Most excellent video it helped me immensely in my grasp of things in life and nature WOW i can apply this to the world around me thank you so much and also i subsribed to you so god bless
Thanks you sir. It helped me a lot getting my concept cleared of frequency, Wavelength and relation with speed of light
Do you have a exact spectrum chart of radio frequencies in harmonic over tone resonance?
I am going to refer this video to my students to visualize frequency etc.! Thank you!
Thanks! Always nice to hear from educators.
well explained with good graphics illustrations
What a beautifull explanation of this natural phenomenom, still havig a hard time with my light meter and its operating range
cleared the full confusion. Fantastic explanation and also animation..... Thanks a lot
Incredibly well explained. Thanks.
you deserve the world I've been trying to fit this in my head and I couldn't my brain wasn't braining and u brained it, I love youuuuuu.
Thanks for the comment. Luv u 2!
That was one perfect explanation. Thank you sir!
i loved it. our chem teacher included you video for a better understanding
That's great! Thanks for telling me.
Good explanation and clarity
This was great I knew about frequencies from music and trig but didn't know about the relationship of wavelength and frequency with light speed. Cool.
Sir superb conceptual lecture you have given, thanks a lot for making such video. Keep making and keep clearing concepts❤❤❤❤
Thanks!
thank you very much !! very very clear! visual, slow talk, perfect
Thankyou I'm thankful for what you teached me.
You are great personality of world astronomy
Good presentation 👏
but during refraction wavelength changes but frequency remains same??? how please tell.
Please how the light wave changes in time?
Really amazing and a helpful video.
Hope for new videos to be uploaded.
With regards,
Yours affectionately.
Thanks! Heavy teaching load... slow going with making vids.
WHAT AN EXPLANATION SIR ! THANKS A LOT
Great video, very clear explanation and graphics. Thanks.
Thanks alot
This is helpful education for all . Thanks
you explained this so well!
Thanks much!
Clear and thoughtful explanation. Thanks.
A vibrating cord with a 2 meter wavelength supports a 10 kg load at a frequency of 300 Hz. If this cord's wavelength was shortened to a length of 1.5 m, what force will produce the shortened wavelength but of frequency 200 Hz?
Thank you for such clear explanations!
I’m glad it was helpful!
you have defined very well sir
thanks a lot
How do you compute the force on vibrating cord to change both frequency and wavelength with a mass is supported by it? My first sight for this is work-energy method but when I did this, it didnt work.
Here is the sample problem for this
very amazing video for a physics lecture
Sir, Your videos are outstanding. I watch your videos regularly. Many doubts on Physics were cleared through your channel. Sir it is a request, would you kindly make a video on how Max Planck really derived the value of his universal constant. There are many videos available but nobody reached that point what I am searching for. His actual experiment and his method to derive the constant. Thanks
I like your suggestion, and I may make a video on this, but there was no experiment that Planck did. Planck "discovered" the constant as a way to fix a mathematical flaw in the expression of energy in black body radiation. The math of black body radiation of that time (1900) showed that it would reach infinite energy in the ultraviolet range, which of course was not possible, and Planck found the number that when inserted into the math fixed the problem, which became Planck's constant. It was five years afterward, in 1905, that Einstein showed Planck's constant to represent something real through his experiment about the photoelectric effect, for which he won the Nobel Prize. Planck himself was skeptical that the constant represented any physical reality until Einstein's experiment. That also prompted the Nobel committee to give Planck a Nobel prize, in 1918, three years before Einstein received it.
Can you do a video explaining "Why Light slows down when traveling through Glass!" But it can then "re-speed up" when it exits the glass? how does this happen and why?
Also: Does the speed of light stay constant when traveling through the glass medium? Meaning does it keep getting slower and slower through thicker glass or does it stay at a constant slower light speed. (assuming the glass is equal temper all around)
Thanks
Nik
Great questions! I wish I knew more about this. I have looked for answers to these questions for a few years and have found that there does not seem to be concrete agreement among physicists about the mechanism for light slowing in a non-vacuum. Also, I do not think your question of the constancy of the speed is really answerable since the speed of light going through a transparent medium like glass is measured from the point of entry to the point of exiting. I imagine someone has tried to measure light speed within the medium, but I have not seen anything about it. Food for thought!
@@CrashChemistryAcademy Yes, I too am having trouble finding these answers as well.. It would seem like these answers should be common place. Odd they are not. - Aether force -
superb video sir
plz keep on uploading such videos
Excellent Explaination
Thanks so much!! This cleared so much up
Sir I am from India yor vedio helped w a lot to understand this topic, thank u very much sir
love to India💖
Thank you so much now my doubt has cleared 😊😊🙂
Bahut aacha video
So interesting
wow amazing its help me a lot..thank you sir...im from india.
ok understood but what is bandwith? also does a single wave of light travelling through space undisturbed continues to have the same wavelength? and are 300nm and 301nm two different waves or colours,is that how it works?
bandwidth refers to the amount of data transfer or signal processing, usually within a wire or other medium transferring data from one device to another. The term "width" comes from the fact that a larger diameter copper wire will have less resistance to electron flow than a narrow diameter wire. Although there are now many ways to improve bandwidth, increasing the diameter of a wire or a fiber optic cable is still one way of increasing data flow.
If a light wave is undisturbed it will maintain its wavelength, even over billions of years. It will increase wavelength if coming close to large gravitational fields (called redshifting), and the expansion of the universe I believe affects the wavelength, but not quite sure about that last one.
The difference in energy between 300 and 301 nm might be too small for our optic nerve signaling/brain processing to pick up, so it would likely have to be a larger change, so from 300 to 305 nm probably gives you a slightly different color-- not sure how sensitive our nervous system is to small changes. Maybe if the optic nerve had a larger diameter...
@@CrashChemistryAcademy ok because i always hear the words "bandwidth" , "line width" or spectral width" when talking about lasers , not sure if they are all related or have certain definitions ,i ready that bandwidth is a range of frequencies ,for example 532nm is one freq and 533nm would be another even if we cant discern one from the other since the colour is too close ,they only change by 1 nm increment? and lasers may emit more than one right? and narrow bandwidth would be something like a small range just like between 630nm and 632nm right and lasers are better at creating these narrow ranges or only one wavelength?
yeah i heard about how when light from celestial objects are moving away they create a red shift ,im also not so sure on that
What is maximum possible acceleration possible in universe ?
why it looks crazy when I look at that harmonic waves in the video, its blinking into my eyes
Great Video!
Lucid explanation. Thank you very much.
Thanks sir
this was amazing, thank you
Thnx for sharing 👍
You rock!
Amazing explanation🔥
Thank you!!!!!!!!!! It was super super helpful and I got a test tomorrow
I get it but I don't TRULY understand it fully. Which is why I'll have to watch this a few more times...
Thanks sir from India ❤️❤️❤️
love to India!💖
An excellent work, thank you very much
Hi, I like your lecture. Thanks
Oh my gosh!!! U are super super amazing!!! Really helpful
Very good explanation!
Thank you sir...... It clear all my doubts......... Thanks a lot........ 😃
Thank you sir for explaining.
If this thing taught in my school literally physics will become interesting for me
😊
You got my subscription!
Great video
Thanks sir you have made concept very very easy
Excellent sir
3:56 i am blind now