Wave interference | Mechanical waves and sound | Physics | Khan Academy

Waves add and subtract their amplitudes when they overlap. Created by David SantoPietro.
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[@rownitasheikh8343]

this video has cleared my all confusion about wave interference. thanks a lot......................

[@hajiramasood5759]

can you like teach my teacher how to teach

[@kshitijtripathi3383]

There can not be a video better than this on interference 😊

[@alambanda9259]

I have watched million videos to understand interference but this one has cleared my mind

[@LeagueofBibo98]

Deserves a thumbs up !

[@ruru7215]

I am not a science student, just watching out of interest and I have to say - thank you for the amazing explanation !

[@rakanmokhammadtakhina]

Thanks, tomorrow is my EOY (End of Year) exam , if I get a good mark, its all thanks to you.

[@mag8758]

This channel was very helpful for me to understand my physics lessons during this quarantine season😊. The methods used in explanations are verycreative . That resolved all my confusions. Thank you Khan academy.

[@aqsaqadir]

What an explanation! Thank you very very much! :)

[@adnanshahriar4435]

Waves of destructive interference looks so beautiful!

[@crazyformyself8948]

these are so good I binged more than what was required for my course 😭

[@deepeshgurdasani8254]

Brilliantly explained!! Thanks a lot for uploading it.

[@MINHHOANG-hl7gp]

i love this academy

[@plutus6316]

This is still gold! I was a bit confused before, now I understand.

[@Gaeforhae]

Can i get the name of the Teacher ?? He’s way too good please i’d like to follow them

[@singasonglikethis]

you made it so easier :O thank you!

[@sandrasarah5083]

I'm from Kenya and I found this very helpful

[@xboychannel]

Thank you so much, such a good teacher !!

[@PushpendraYadav-wh9lc]

Best explanation

[@mdv9831]

That helped a lot. It really cleared up my confusion on the topic.

[@fikirbirhanu5983]

U make things more easy Thanks 😊👍👍

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that's when u talk abut great videos

[@kirtinandan1509]

Awesome Man. Cleared all my perception

[@kavyagupta5178]

He is really the best

[@tsukiyouyuiyu]

Wonderful explanation! It really helps me a lot!!

[@kashiajensen9949]

If you need to cram listen to this 1.5x speed it’s still very clear

[@yogharajar8211]

WOW JUST WOW

[@hohseyuh]

I'd never think wave optics is easy af. Thanks a lot.

[@GoodNewsForStrangers]

This is amazing. Thank you

[@maleehaaamir665]

Thank you very much!the video was very much helpful..:)

[@diddlydevil2846]

Great video!

[@igorzolotarev9805]

Good job,verry helpfull

[@aquariusneon]

THANK U VERY MUCH

[@mclarros]

Wow, thank you so much!

[@mariyam.s-61secc62]

This video was so helpful. ... Thank u

[@taqwatanveer3275]

Made so easy. Thank you

[@MysticMD]

Thank you :)

[@aeroboi2862]

To cancel loud noise, we must provide louder noise out of phase so that it makes no noise. We must think deep buddy.

[@kehindeoladeru9760]

Thanks

[@trio069]

Thank you sir,,,,,,,

[@mikojiang2606]

Thank you so much!!It really helps!

[@jannatoitri6692]

Wow I ❤ it

[@sanjesengineering3143]

What will be the resultant frequency of two wave when they are 90 deg out of phase?

[@atagymx]

Amazing, thank you so much!!

[@lomasck]

Pulse Jet Engines make massive Sound Waves.Could you get the noise down perhaps with two Jets side by side made somehow to run Constructive interference.

[@nurajtilakaratne493]

destrructive*

[@kabouch]

As waves transfer Energy, the energy received from a neighboring particle gives momentum to the medium's particle to move. But, what would make a particle move upward in a transverse wave or either downward? i.e. what is the physical determent of direction?

[@kims4037]

This was very clear and a great help. Thanks!

[@pradyundevarakonda6849]

Thank you !!!!!!

[@lsaha4093]

it's really very good video...got thoroughly..

[@sachinrath219]

fine video,thanks for the upload.

[@debasis8523]

Awesome video and really good explanation.

[@Hi-sz9yg]

I staight up just flip my speaker to be upside do to get noise cancelling that didn't work. LUL

[@victoradepoju5510]

A very helpful and nice video. Thank you very much.

[@RonZhang]

If you disrupt someone playing a video game, that is destructive interference if he or she doesn’t like it, but is constructive interference if it is to make him or her spend more time on study.

[@arindambiswas2486]

Thank You. It was very helpful.

[@bobkurland186]

neat!!!

[@kaushilkundalia2197]

thank u so much. you are awesome!

[@egiagata7964]

im impressed

[@arthikalexander316]

Also what if the wavelengths of the two waves were difference,would it be possible to get constructive or destructive interference?

[@stephenadams6555]

In general, you would get both, depending on how the waves add together.

[@Schattengewaechs99]

Stephen Adams - Musicians use this phenomena for artistic effects, search up "phaser".

[@RockStar-nu7ko]

thank you

[@dhruvk7892]

Thanks for such a great explanation

[@user-qx5cn1si1q]

Can someone please help me? Why does anti reflection coating of lenses have to be a quarter of the wavelength of light, if both of the reflected waves (from the first surface and the second surface) will undergo 180 degree phase change? Won't they interfere constructively in any way, despite the thickness of the coating, since the reflected rays will be exactly the same as the incident wave, except they BOTH will be 'flipped upside down', having the same phase (no phase change between the two reflected waves)? Both of the reflected waves should undergo 180 degree phase change and therefore, interfere constructively.

[@kadijasuhail7502]

Wow!!

[@martinovycestycz]

how will be affected those two waves if one is shifted about 90 or 270 degrees? I think they are not affected at all, right?

[@amoghbhat1752]

thanks for this video

[@jeswhelsalceda1862]

Nice work

[@poojamalavade1624]

thank u

[@rifathossain6140]

thank you !!!

[@motaungthatosetjhaba9427]

i cant wait to pass at ukzn pmb campus

[@mustavogaia2655]

Apparently artillery battery causes sound shadows.

[@Zakariah1971]

This is common sense, next time discuss the effect of ci along the x axis, y axis amplitude double is too obvious when frequency is the same.

[@arthikalexander316]

What it is only 50 degrees(any angle other than 0,180 and 360 degress) out of phase? would it be constructive or destructive interference?

[@richardgreen2810]

it will be somewhere between them, depending on how close it is to being in phase or out of phase

[@sereenalhabsi533]

Partially distructive

[@NextGenAge]

Would destructive interference still produce something like a push in the direction where the waves are going to?

[@stevemann8374]

NextGenAge yes comparable to dc

[@johanfaisal8613]

why is it that at 8:47 the wavelength is equal to one pie? Shouldn't a whole wavelength be equal to 2 pie???

[@VG__]

12:05 gist

[@mashroom2927]

Is this the organic chemistry tutor?

[@SA-sq7sf]

but these waves are not passing through de same point so how r they gonna interfere

[@devasheeshbhandari2540]

Sara khan correct

[@soi9482]

you saved my life.

[@andresmariscal3537]

I thought that a sound wave was a longitude wave, in the video it is a transfer wave.

[@Kyle_da_athlete]

Andres Mariscal that's a displacement Vs time graph of a sound wave. It just shows how the displacement changes with time. Sound is still longitudinal but the diagram you are accustomed to is the actual position of the particles itself which would show the compressions and rarefactions

[@rahulswami6304]

What do u mean by out of phase

[@drilonahmetaj1975]

it means the waves are shifted at a phase 180 degrees , so the amplitudes of both waves will cancel one another at any time.

[@devasheeshbhandari2540]

We would not hear😱

[@user-vn6ch3nj3m]

what if delta x was equal to 1.25 lambda? there will be construction or destruction?

[@aeroboi2862]

neither

[@abirislam2879]

💓💓🇧🇩

[@TheCardboardkey]

Please also watch this video to be aware of a common mistake: kzbin.info/www/bejne/pnvMoJuvrqd9q5Y

[@sccm100]

I like biology, chemistry, even CARS. I just hate physics

[@bhumikagarikapati6513]

Explaination is bad if u are teaching u explain all about behind it

[@yogharajar8211]

WOW JUST WOW

[@zebroar4630]

Best explanation