Standing and Stationary Waves in an open tube - A Level Physics

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  • เผยแพร่เมื่อ 23 ธ.ค. 2024

ความคิดเห็น • 62

  • @atrihegde1418
    @atrihegde1418 4 ปีที่แล้ว +141

    Imagine disliking free education

  • @hitren86
    @hitren86 6 ปีที่แล้ว +36

    What you've drawn are the 1st, 3rd and 5th harmonics. For a tube open at only one end, the even harmonics don't form. The reason we count them this way is because the definition for higher harmonics is in terms of frequency: fn = n*f1. If you look at the waves you've drawn, the wavelength is 4L, then 4L/3, then 4L/5. So wavelength decreases by a factor of 3, then by a factor of 5 from the fundamental. This means that, if we call the frequency of the fundamental f1, the frequencies of the harmonics you drew are 3f1 and 5f1. So they correspond to the 3rd and 5th harmonic.

    • @petercook5783
      @petercook5783 3 ปีที่แล้ว +4

      Just watched this and got confused as I thought the same as you

    • @simransookraj5446
      @simransookraj5446 2 ปีที่แล้ว +2

      makes sense. i was really confused. thank you.

    • @joshiganna
      @joshiganna ปีที่แล้ว +2

      in a closed pipe 4L/3 is Second harmonic and 4L/5 is third harmonic. There are 2 Different equation/formula for fn. the general expression is fn=nc/2L and for closed pipe the expression for fn=(2n-1)c/4L
      (this is what my book says and thats what he is teaching so i think its prolly correct)

    • @Sazid-Shahriyar-Roop
      @Sazid-Shahriyar-Roop ปีที่แล้ว

      Can someone explain to me why the anti-node has to be on the open side and the node being on the closed side? I am not understanding.

    • @nsc7872
      @nsc7872 ปีที่แล้ว +4

      ​@Sazid-Shahriyar-Roop because on the closed side the air doesn't vibrate so it is where the node is but on the open side of the tube the air vibrates most freely so that point is the antinode. This results in the length of the air column being one quarter of the wavelength

  • @petercook5783
    @petercook5783 3 ปีที่แล้ว +9

    I believe that the diagrams you have drawn represent the first, third and fifth harmonics. Thank you for the rest of the video though, I appreciate it.

  • @enniferzhang7120
    @enniferzhang7120 9 ปีที่แล้ว +13

    Your videos are extremely helpful, thank you for making them! :D

  • @tomstalley3179
    @tomstalley3179 8 ปีที่แล้ว +142

    she's started drinking young

    • @movielife1425
      @movielife1425 4 ปีที่แล้ว

      Did you see her drink it with your eye

    • @Dench773
      @Dench773 4 ปีที่แล้ว +9

      @@movielife1425 r/whoooosh

  • @PinkyPlayBear
    @PinkyPlayBear 9 ปีที่แล้ว +4

    You are really motivating me to learn more about this.. This is very interresting!

  • @redbeanv0ng
    @redbeanv0ng 9 ปีที่แล้ว +10

    your videos are really useful, thanks a lot.

  • @appleyapple2308
    @appleyapple2308 9 ปีที่แล้ว +22

    Thank you so much for posting these videos, they have been extremely useful!
    Also, could I get the model of the pens you're using please?
    I'm albeit mad about pens.

    • @atrihegde1418
      @atrihegde1418 4 ปีที่แล้ว +2

      lmao Pilot V Sign pens

  • @zarykodo5330
    @zarykodo5330 8 ปีที่แล้ว +3

    I must say, this video was very helpful. Subscribed!!!!

  • @edwincuevas9965
    @edwincuevas9965 4 ปีที่แล้ว +2

    Thank you for this, seriously!

  • @Elitea20
    @Elitea20 4 ปีที่แล้ว +2

    Wait so the first one is the fundamental frequency, third frequency then fifth?

  • @stormblazer9991
    @stormblazer9991 8 ปีที่แล้ว +5

    Aren't these Stationary Waves in a CLOSED tube?

  • @PostalZimbabwe
    @PostalZimbabwe 9 ปีที่แล้ว +1

    Dessa filmer är riktigt bra och jag hoppas få se mer i framtiden . Fortsätt med det goda arbetet .

    • @PhysicsOnline
      @PhysicsOnline  9 ปีที่แล้ว +6

      Tack, jag hoppas du hittar dem användbara

  • @nusaibahhussain9975
    @nusaibahhussain9975 6 ปีที่แล้ว +2

    What you have as the 2nd Harmonic (L=3lamda/4), according to my textbook is the Third Harmonic (first overtone)...I don't understand

    • @ryryscorer7113
      @ryryscorer7113 4 ปีที่แล้ว

      i think you are right. i'm pretty late, but check Doc Schuster out. more helpful explanations there.

  • @alichopping2703
    @alichopping2703 9 ปีที่แล้ว +1

    I'm not following at 1:16. Why is this distance lambda*(3/4)?

    • @MiniNinjaUK1
      @MiniNinjaUK1 8 ปีที่แล้ว +1

      A node to a node is lambda/2 and a node to an anti node is half that so in total to equals 3lambda/2

    • @the_crackin3610
      @the_crackin3610 ปีที่แล้ว +1

      @@MiniNinjaUK1comment from 7years ago cleared my concept❤

  • @hackercop
    @hackercop 3 ปีที่แล้ว

    Could you do a video on how this works on bass reflex ports please.

  • @ahmedezzat2003
    @ahmedezzat2003 8 ปีที่แล้ว +19

    your daughter is so cute :(

  • @darren970906
    @darren970906 9 ปีที่แล้ว +2

    Isn't it Fundamental > First Overtone > Second Overtone? So I'm assuming that 2nd Harmonic is another word for First Overtone?

    • @PhysicsOnline
      @PhysicsOnline  9 ปีที่แล้ว +3

      Darren Ng Great question, and one I've just had to look up. Try this www.britannica.com/EBchecked/topic/555255/sound/63994/Overtones and also hyperphysics.phy-astr.gsu.edu/hbase/music/otone.html to find out a bit more.

    • @darren970906
      @darren970906 9 ปีที่แล้ว +3

      Thank you :) Keep making videos btw I'm sure you'll have more viewers in the future

  • @24-7Pain
    @24-7Pain 7 ปีที่แล้ว +1

    How come you can't set up a standing wave at a tube length of λ/2? (I understand this is between the two harmonics, but how would you word this for an explanation?)

    • @waleedelmahy1930
      @waleedelmahy1930 6 ปีที่แล้ว +1

      i know this is extremely late but lol the reason is that this is an open tube....one end will always be a node and the other will be an antinode

  • @thejuwonfari
    @thejuwonfari 8 ปีที่แล้ว +3

    is all your content from edexcel board

    • @PhysicsOnline
      @PhysicsOnline  8 ปีที่แล้ว +6

      +juwon fari It's for every board

    • @armuhammad2148
      @armuhammad2148 4 ปีที่แล้ว +1

      Works perfectly fine for CIE

  • @foocindy6410
    @foocindy6410 7 ปีที่แล้ว +2

    This video is for closed pipe is it?

    • @fabros9290
      @fabros9290 7 ปีที่แล้ว

      Foo Cindy No its an open tube/pipe

    • @TheRealRaghibMrz
      @TheRealRaghibMrz 7 ปีที่แล้ว

      yes, im pretty sure its for a closed pipe, must be a mistake in the video title

    • @suhail1200
      @suhail1200 7 ปีที่แล้ว

      Yes this is closed pipe.Go to the previous video on strings that's for strings/open pipe.

    • @Xxkari99xX
      @Xxkari99xX 7 ปีที่แล้ว

      No its an open pipe if youve done the experiment the wave enters at the opening of the pipe hits the bottom and reflects back out therefore creating the stationary wave

    • @JoshB-zc5jb
      @JoshB-zc5jb 7 ปีที่แล้ว

      no its open pipe with the antinode at the opening

  • @moleily9743
    @moleily9743 8 ปีที่แล้ว

    Thank you so much your videos are so useful

  • @innyikoli6868
    @innyikoli6868 ปีที่แล้ว

    Isn't it 1st, 3rd, and 5th harmonic wavelength?

  • @HesterClapp
    @HesterClapp 8 หลายเดือนก่อน

    Why does the top have to be an antinode?

  • @clairen.s3295
    @clairen.s3295 4 ปีที่แล้ว

    How did you go from half the wavelength to a quarter ?

    • @yann9915
      @yann9915 4 ปีที่แล้ว

      From one anode to the next is half the wavelength of the wave. However here we went from one anode to its adjacent node, meaning its half of half a wavelength, in other words one quarter.

  • @Heyjudeeeee12321
    @Heyjudeeeee12321 3 ปีที่แล้ว

    . 1st you showed a vessel open at one end which showed one node and one antinode. and again at the same vessel you showed 2 of them each ... ?

  • @ali-bb7so
    @ali-bb7so 8 ปีที่แล้ว

    very good video

  • @nimragauhar4838
    @nimragauhar4838 7 ปีที่แล้ว

    THANKYOU SO MUCH!

  • @dhrubokarim8751
    @dhrubokarim8751 หลายเดือนก่อน

    I wonder how old is she now ( and was during this video )

  • @fatimabasathia6781
    @fatimabasathia6781 7 ปีที่แล้ว

    OK so I wanna ask a few questions about the stationary wave,
    first up, in a stationary wave formed due to reflection, is the stationary wave instantaneous?

  • @littlehouse3g
    @littlehouse3g 8 ปีที่แล้ว +8

    is it just me feel the girl is so cute... :D

  • @ABDULHASEEB-dm2nt
    @ABDULHASEEB-dm2nt 4 ปีที่แล้ว

    It is close not open man

  • @danielmkandrews
    @danielmkandrews 8 หลายเดือนก่อน

    why she drinking beer