Sound Properties (Amplitude, Period, Frequency, Wavelength) | Physics | Khan Academy
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- Опубликовано: 5 сен 2024
- Let's take a closer look at the ways we can describe sound. Created by David SantoPietro.
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THIS IS EXACTLY WHAT I WAS LOOKING FOR WHEN I GOOGLED IT! THANK GOD! I needed an animated visual representation of a sound wave so bad with parts labeled. I was scratching my head reading the book trying to understand what the wavelength was. Thank you!!!
Lol, same here, I hate remembering something without understanding exactly how it works by imagining it visually, too bad almost everything in the book is dry theory :/
i have watched videos and online lectures for like 3h now...
and seriously this is the BEST explanation about sound properties there is.
thank you so much sir, i love you. i would walk your dog sir, wash your cloths, bet up the bullies, make sure u get promotion, give you the lottery, and much more. YOU Sir ARE THE BEST of RUclips, ofc After Dr.Najeeb :)
THE HERTZ JOKE GOT ME SUBBED
'Everyyyybody hertzzz'
same bro
😂
This made everything clear up for me, thank you. have to do a PowePoint on sound
this is THE BEST video on sound properties...god bless you sir....thanks from the core of my heart
I am such a sucker for bad puns. "Sorry, I know listening to this note hertz."
in one of your video you said that waves does not travel faster if you scream louder . well that is confusing because you said that density cause inertia and the wave has to over come this inertia which slows it down. if I pack more energy in a sound wave over the same area wouldn't that more easily overcome the inertia thus traveling much faster .
When I’m searching for a visual and very precise way of explaining anything, I search the question and Khan Academy. There is nothing that they do not cover that is of my interest! 👏🏾♥️
This video is on point.Thank you so much for posting this.
this is the best explanation. helped me a lot,thanx a lot.
Amazing explanation, you changed everything into real life
PASSING ON KNOWLEDGE IS TRULY AN ART
4:00: The distance between two groups of compressed air (which is wavelength) is far greater than the sum of the molecule's displacements, which doesn't make sense. It should be equal to the sum of the molecule's displacements/amplitudes.
Good one
thank you:)
Fascinating. Excellent summation.
When in a instrument, you travel from an A note to a B note, fundamentally you are only slightly increasing the frequency of this note? Or does A4 440Hz and B4 493Hz differ more than in just the frequency? Do they differ as well in the wave shape? Or for a given instrument the wave shape of all notes if fundamentally the same, but the notes played the instrument differ exclusively on their frequency?
Khan academy has did it again👍really great
Hi, I'm a belgian teacher (french speaking) and I'd like to add french subtitles in the video for my pupils. Does someone know how to do it ? Thanks wave cravers !
possibly dumb question but since the sine graph can be used to show the movement of molecules does this mean that square or saw or triangle waves alter how those molecules actually move? like a square waves molecules dont actually move that fast and then stay in place do they?
Great video! Very simple and clear explanation.
What kind of speaker is used? And what's the lowest and highest frequency it could pick up?
Thank you!
Best explanation on Earth!
Why sound waves traveling in all directions ??
Let's look on loudspeaker. If it creates sound waves by pushing and pulling the air in front of it , how we can hear sound when we are behind the loudspeaker or above/ under ?
the speed of sound is 330m/s .. imagine yourself traveling at that speed and hitting walls and objects .. how much time it would take? for us to hear that deflected sound wave. might be less than 0.1s which is unnoticeable by our brain. at a small place you hear sound bouncing off clear which seems like sound is directed at you but its not actually.. but if you increase the area of a place too much you will hear echo .. ever tried listening to music by pointing phone speaker at your face and then back to the original position.. there is a change of sound .. ever heard of dopplers effect? imagine sound waves coming outta speaker in a circular manner .. sorry I couldn't explain in a proper way.. I kinda messed it up.. coz I was actually studying waves right now in physics .. so everything was just jumbled up in my mind
Haider .R.K I should try to listen something in clear field. Although, I think diffraction takes place here too.
yeah it does. cause all that i said was mostly related to a controlled environment... if we were to apply physics out in real world then we would fuck up our mind.. thats why the scientists also hang out on beach with girl drinking beer and not worrying bout anything :P xD
it travels in every direction cause the molecules of the air or the walls are everywhere
Very very understandable!
This was amazing explanation
thank you!
the wave length vs. period comparison was just what I needed
Excellant explanation It makes me understand very well
A phenomenal video!
best explanation wth.... ty!
Great! But please speak slower! New stuff to me. Thanks,
this is awesome.. just what I need! thanks Khan Academy
This isn't real Khan academy
WOW very intuitive
very very simple Thank you ! Physics is hard enough!
Thank you so much for this video, I learned so much.
Phenomenally good !
I have watched other videos before stumbling upon this one and they were all lacking but this one is the best and the visuals really help the understanding process ! Thank you
Very helpful for ultrasound physics!
Problem, when I search up on the internet for displacement of air molecules graph, the region of compressed air is more under the peak of the wavelength than there one i’m looking at 5:05
Just started Sound Production Course. Basic Accoustics are my first LO. Had no fucking Idea how it works.... Until I saw this video. Thanks Buddy.
everything is way more clear now. thank you for the video
Helped to do well ....loved the video 🤩🤓
Very good explanation
The amplitude is the distance from the equilibrium to the peak of the waves
THANKS SIR DAVID, YOU CLEARED MY CONFUSION BETWEEN PERIOD AND WAVELENGTH
わかりやすい説明、ありがとう❗️
You are great a basic and a complicated study was made just simple by you man!😲😀😀😀
Best explanation about wavelength.... Thank you... !!!
Excellent Explanation Thank u
One of the best ever explanation i ever watched, awesome work sir hatss off to u
the editor needs a more recognition, bro is hilarious af.
HOW DO I FIND THE UNDISTURBED POSITION
NEVER MIND I UNDERSTAND
What is the mechanism that moves air molecule backward in sound waves
This is so well explained!
Thank you!
It's the best explanation ever!
what is pitch, frequency, quality, wavelength of sound
thank so much for you grat videos!! please tell me how can i have theirs substitute??
bro you saved my life
Thanks hopefully I can have a better chance of passing my physics exam 🙏
Amazing way of teaching
Thanks! This video really helped me
Nice explanation 💯💯
Best explanation ever👏👏👏
Watched this for an online lecture and found this to be a great video that helped me out a ton. Thanks!
Wow sir u r the best
creative !!
2:34 OMG the pun.
Thanks a lot
Informative, thanks
great video!!!! thank youuu
good.
can someone answer this question
what are the acoustic characteristics of the sound /r/??
Loudness maybe
nice
Excellent
Great
Very good explanation, but could be slightly slower...
Pause button
0.5x playback speed
Thank u
this was just awesome... found it very simple and was on point... it made my doubts clear. thank u so much for posting this video
You helped me in my exams
Helpfull
Fine
Thank you,that enables me to understand what I wanted to know long time ago
This is different!
THANK YOU for explaining that the measurements of period and wavelength of sound waves are not measuring the same wave property! This was very confusing to me for days, no one else talked about this
Don't worry, that note is no longer playing.
Very good good
Thx
Khan academy always employs best entrance to the video xd
Wow
Awesome
Very useful representation. Thanks!
thanks very much now I understood wavelength amplitude and frequency properly
I love you.
Very informative. Thanks!
The activity is very much helpful thanks.
wow fr
Thanks so much !!!! I understood now !!
yer welcome
period is time measured in secounds.... wavelenght is distance measure in meters
Great mini topic reviews for the MCAT!.
Thanks!
Those who dislike we need to talk for a second