Eddy Currents and Magnetic Braking of a Pendulum Caused by Electromagnetic Induction

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  • Опубликовано: 21 дек 2024

Комментарии • 220

  • @beautifulthings455
    @beautifulthings455 4 года назад +25

    Finally I got it....thank you so much sir... seriously we can understand physics practically more
    Thanks from INDIA

  • @Hanking-Yo-Schrader
    @Hanking-Yo-Schrader 4 года назад +64

    Sir, this is literally the best video explaining Eddy currents I have seen so far. Really appreciate that. Good work!

  • @aayushgiri6182
    @aayushgiri6182 4 года назад +51

    THIS SHOULD BE THE METHOD OF TEACHING NOT THAT THEORY, THANX SIR

  • @nakulnandi7707
    @nakulnandi7707 5 лет назад +3

    wow sir it was a concept clearing video..............love from INDIA...............

  • @keepItF4eel
    @keepItF4eel 8 лет назад +6

    Excellent! You completely cleared my concept of eddy currents.Thank you very much!

  • @blackbullssdin8907
    @blackbullssdin8907 11 лет назад +3

    great work sir. i did this practical as a project for my senior year with some modifications of my own including a magnetized pendulum. i got the inspiration from your video. thanks again. appreciate your work and keep it up.

  • @نورالهدى-خ6ذ8ث
    @نورالهدى-خ6ذ8ث Год назад

    You are truly wonderful. I never understood the topic in the Arabic language, so I turned to you and the explanation amazed me

  • @chipmunktechtips683
    @chipmunktechtips683 9 лет назад +4

    amazing. I though I know everything about simple experiments. This is like music to me I would listen while sleeping.
    What is amazing is how effective the braking is.

  • @ayushsinha1813
    @ayushsinha1813 4 года назад +1

    Excellent demonstration that acts like a bridge between the book and the mind.

  • @SanjeevKumar_024
    @SanjeevKumar_024 Год назад +1

    Very very good explanation and very good way of explaining the concept. I cleared all my concepts of braking and the direction of current produced due to the eddy current. Many many thanks sir for clarifying my concept.

  • @KAjyoti
    @KAjyoti 3 года назад

    Teaching method is super awesome 👏. I understood the concept thoroughly.
    Love from INDIA 🇮🇳 ✌️

  • @physicsdarshan7149
    @physicsdarshan7149 5 лет назад +2

    Excellent sir
    Thank you for the nice video

  • @Momohhhhhh
    @Momohhhhhh 11 лет назад +5

    Very cool. Both electromagnetism courses I've taken in college so far seem to acknowledge Eddy currents, but not discuss them at all (probably because of their difficulty to calculate). Thanks for the clear demonstration.

  • @kongol5036
    @kongol5036 Месяц назад +3

    Sounds dumb but can we create car brakes with this?

    • @kettenschlosd
      @kettenschlosd Месяц назад +1

      they are used in breaks for high speed trains and rollercoasters actually! so your idea isnt that unreasonable. i think one problem would be that for a car, you wouldnt want a dead battery to mean no breaks if its an electro magnet. (i think permanent megnets would be too much extra weight). also a car break with this mechanism would "feel" different especially with low speeds while parking for instance. the sharp breaks of friction based technology probably make for tighter control.
      its a fascinating idea though. i deffinetly wonder if its been tried for cars.

    • @kongol5036
      @kongol5036 Месяц назад

      ​@@kettenschlosd Oh cool! Thanks for sharing. And maybe they can create a hybrid system, magnet brakes with faster speeds like on the highway and then it switches to a mechinal one at mechanical half way. Or if no electromagnetic power, just defaults to your mechanical brakes. Regardless, this is cool technically and never knew that roller coaster utilize this

  • @pierr57
    @pierr57 Год назад

    merci ca repond a des question depuis des année , oui la meilleur

  • @XYZ-rx9lz
    @XYZ-rx9lz 4 года назад +1

    Exellent for explain.......Thank you..so much...you are No.1

  • @bor3d_V
    @bor3d_V 8 месяцев назад

    Great explanation, though I'm wondering where in tarnation I can get those aluminium parts and the magnet ...

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  8 месяцев назад

      www.pasco.com/products/lab-apparatus/electricity-and-magnetism/magnetic-fields/em-8618
      www.pasco.com/products/lab-apparatus/electricity-and-magnetism/magnetic-fields/em-8642

    • @bor3d_V
      @bor3d_V 7 месяцев назад

      ​@@electricandmagneticfields2314 Thanks so much! Really helped a lot!

  • @nehabimal234
    @nehabimal234 4 года назад +1

    Amazing video! I've understood the concept very well all thanks to you :)

  • @SuhasKashyap07
    @SuhasKashyap07 11 лет назад +12

    Thanks! Really needed it.. :)

  • @protabarak7857
    @protabarak7857 4 года назад +2

    Thank you
    Eng.tabarak.sahib

    • @حسينكريم-ض2د
      @حسينكريم-ض2د 4 года назад

      واخيرا لگيك جماعه كتيب 😅💪💪💪
      #المهندس 😌

    • @protabarak7857
      @protabarak7857 4 года назад +1

      @@حسينكريم-ض2د @ebbhdhdhh
      تعال انضم للقناة هايه

  • @nituraj127
    @nituraj127 4 года назад +1

    Very clear thus too nice....

  • @peteabdu9179
    @peteabdu9179 5 месяцев назад

    How does a battery operated magnetic pump work? There must be an aluminum showing between the coupled magnets, so how do they get around the Eddie current problem and keep their efficiency?

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  5 месяцев назад +1

      I don't know anything about magnetic pumps. It is something I will look into and maybe there is a potential video there!

    • @peteabdu9179
      @peteabdu9179 5 месяцев назад

      @@electricandmagneticfields2314 Oh man that would make a great video! Basically you can magnetically couple a motor to a shaft radially through a housing so there are no shaft seals which is a huge advantag for a lot of reason. However, there are a few tricks to maximize coupling and minimize eddie currents I'm still trying to understand. Advanced Diver Propulsion Vehicles also use them since shaft seals are the biggest risk to flooding a housing:
      ruclips.net/video/eufuhWX-ZjM/видео.htmlsi=SGjZJTR_Idv97WEf&t=19
      ruclips.net/video/IAkxS1xVraw/видео.html

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  5 месяцев назад

      @@peteabdu9179 Thanks!

  • @renegangfan5630
    @renegangfan5630 4 года назад

    Wow this finally made sense, and I can see I am not the only one. Thanks :)

  • @pierr57
    @pierr57 Год назад

    tres belle demonstration ,bravo ca repond a mes question

  • @sciencewithfun480
    @sciencewithfun480 4 года назад

    Wow sir your explanation with specified experiment help me lot ,to understand the concept of eddy current. Thanks for your help.

  • @nishuyadav4422
    @nishuyadav4422 3 года назад

    Best best best
    Thanku so much 🥳🥳😜😜best explaination

  • @99tsr
    @99tsr 2 года назад +1

    Great video. For clarification: when he says “opposing” magnets: it means opposite poles so the magnets are attracted to each other. Opposites attract. I made the mistake of placing the magnets so they repelled each other. That doesn’t create an Eddy Current.

  • @bamalingeshmeti1243
    @bamalingeshmeti1243 4 года назад

    Sala this topic mere dimag me aa nahi raha tha.... thanks bro... understood very easily 😁

  • @sahilpatel1655
    @sahilpatel1655 4 года назад

    Awesome video

  • @peter_ade
    @peter_ade 11 месяцев назад

    Thank you for this clear explanation!

  • @mrittwikaduttagupta2835
    @mrittwikaduttagupta2835 4 года назад

    Thank you, sir, it was so confusing till I watched this video.

  • @darshanroy8770
    @darshanroy8770 7 лет назад +1

    nice video it' cleared my all doubts thank you sir,!!! 😊

  • @bradleyknockel7982
    @bradleyknockel7982 3 года назад +1

    The red current loops are drawn incorrectly. Half of the loop must be outside the magnetic field. This is required so that the Lorentz force stops the pendulum (else the force on half of the current loop cancels the force on the other half). The current loops form around the boundary because they encircle the change of flux, which is at the boundary of the magnetic field.

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  3 года назад

      I should have been more careful with drawing the eddy currents. Back then I had a difficult filming arrangement and it was hard to concentrate on what I was saying, what I was drawing, and what I was filming.

  • @fabvid1742
    @fabvid1742 4 года назад

    It's really good. .🔥.I know this concept very well Sir..

  • @حسينكريم-ض2د
    @حسينكريم-ض2د 4 года назад

    Thank you
    eng.Hussain 💪💪

  • @hufflepuff4444
    @hufflepuff4444 2 года назад +1

    Thank you, thank you, thank you.

  • @عبدالأمير-ث2ج
    @عبدالأمير-ث2ج 3 года назад +1

    Nice

  • @AlhussainA6
    @AlhussainA6 3 года назад

    thank u very much sir , from Iraq

  • @drfudge7975
    @drfudge7975 Год назад

    If the eddy current results in a magnetic field that acts perpendicular to the motion of the pendulum, then why does it slow down? Wouldn't it need to experience a force in the opposite direction to the way its travelling in order for it to slow down? And does the magnetic field due to the eddy currents cancel out with the magnetic fields due to the bar magnets?

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  Год назад

      The force on the eddy current from the permanent magnet is F =Idl x B, so perpendicular to the eddy current and the the permanent B field. Superposition holds so the magnetic field at some point in space is the same of the tow magnetic fields. Just like it would be if you had two bar magnets.

  • @hptpodko9987
    @hptpodko9987 2 года назад +3

    اني طالب سادس اجبت اشوف النشاط

  • @RaunakSingha1212
    @RaunakSingha1212 10 лет назад

    well demonstrated... n well explained...
    wonder y this video has received only 50 likes...
    thnx a lot....

  • @zaidsayed4388
    @zaidsayed4388 Год назад

    Great Video. Well explained
    Just wanted to inquire whether there is a formula to calculate the magnetic damping caused by eddy's current.

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  Год назад

      Thanks for the kind comments. The calculations would probably have to be done numerically. First using Faraday's law to determine the induced currents and then F = IdLXB to get the force on the paddle.

    • @zaidsayed4388
      @zaidsayed4388 Год назад

      @@electricandmagneticfields2314 thank you but how would the number of oscillations, come into play in the formula. As I'm really curious to how eddy current is produced from the pendulum motion but want to know how to quantify my observation.
      If you could help me, I would really appreciate it.

    • @zaidsayed4388
      @zaidsayed4388 Год назад

      @@electricandmagneticfields2314 how do you determine current using faradays law

  • @williamkeithfunderburk1257
    @williamkeithfunderburk1257 Год назад

    Can this demonstration equipment be purchased? My colleagues want one. Thanks 🙂

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  Год назад

      Yes, but it is expensive. Here are the links
      www.pasco.com/products/lab-apparatus/electricity-and-magnetism/em-8642
      www.pasco.com/products/lab-apparatus/electricity-and-magnetism/em-8618
      www.pasco.com/products/lab-supplies/clamps-rods-and-stands/me-9355
      I had these items available. If I had to purchase them I would have built the apparatus.

  • @ShivanshRana
    @ShivanshRana 3 года назад

    Underrated 👍

  • @notorious.big.elow97
    @notorious.big.elow97 4 года назад

    What is that rig called?

  • @YouTubesurfer-310
    @YouTubesurfer-310 8 месяцев назад

    How could someone get these tools?

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  8 месяцев назад +1

      www.pasco.com/products/lab-apparatus/electricity-and-magnetism/magnetic-fields/em-8618
      www.pasco.com/products/lab-apparatus/electricity-and-magnetism/magnetic-fields/em-8642

  • @BBQsquirrel
    @BBQsquirrel 2 года назад

    That metal grinding sound.......unnerves me and my students 😂😂........
    But otherwise thanks for an excellent demo

  • @kumarshubham4327
    @kumarshubham4327 4 года назад

    Awesome video.

  • @شاكرمحمود-ع8ش
    @شاكرمحمود-ع8ش 4 года назад +2

    اول عراقي طالب سادس تطبيقي مر من هنا 🤟

  • @dibyanshusharma8936
    @dibyanshusharma8936 7 лет назад

    Really Nice demonstration! THANK YOU sir, !

  • @gaurav8383
    @gaurav8383 5 лет назад

    Can I get pdf of this experiment
    For my investigation project

  • @wurmh2hm
    @wurmh2hm 5 лет назад

    Thank you very much sir.
    You are really doing great...

  • @rasheedahammad7948
    @rasheedahammad7948 4 года назад

    Super👌

  • @bridgendesar
    @bridgendesar 6 лет назад

    Could the effect be used as a drive coupler, would the torque be transferred effectively?

  • @حسينكريم-ض2د
    @حسينكريم-ض2د 4 года назад +1

    #احمد_كتيب
    💪💪💪

  • @bhagyshreetambe5060
    @bhagyshreetambe5060 2 года назад

    Thank you very much best explanation

  • @harshitgupta3233
    @harshitgupta3233 5 лет назад

    Really interesting
    Loved it

  • @TechsScience
    @TechsScience 4 года назад

    Very well explained!

  • @nidhikumari1351
    @nidhikumari1351 10 лет назад

    can temperature equivalent to 1000 degree c be produced by the help og eddy currents????
    if so what should be the strength of the magnet used?
    can iron be used for the same???

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  10 лет назад

      I have never looked at calculating how much heat is produced. I would have to think for a while as to the best way to calculate the heating. The heating would be directly proportion to the total change in flux with respect to time. So the larger the magnet and faster the motion the greater the heating.

    • @nidhikumari1351
      @nidhikumari1351 10 лет назад

      thank u sir...could u plzz confm it...is it possible st all?

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  10 лет назад

      Yes it can be done. From the changing magnetic flux caused by the motion you can determine the electric field intensity induced in the aluminum. Then from the resistivity of the aluminum you could determine the resistive heating. Alternatively, since the solid aluminum pendulum stopped immediately upon entering the magnetic field region, the kinetic energy the pendulum had would have been converted into heat--a simpler way to get an estimate of the heating.

    • @nidhikumari1351
      @nidhikumari1351 10 лет назад

      very thank u..sir...u helped me a lot...

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  10 лет назад

      I'm not sure what is practical using a mechanical motion to produce induction heating, but using an AC signal to generate the changing magnetic flux is how induction furnaces operate, en.wikipedia.org/wiki/Induction_heating

  • @saranshdabas1972
    @saranshdabas1972 6 лет назад

    sir what can we use as a non conducting material for this project instead of your third one?

  • @saranshdabas1972
    @saranshdabas1972 6 лет назад

    what is the stand you used to hold plates is there any other alternative

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  6 лет назад

      I actually purchased these parts,
      www.pasco.com/prodCatalog/EM/EM-8642_magnetic-force-accessory/index.cfm

  • @MiniNinjaUK1
    @MiniNinjaUK1 7 лет назад +1

    I understand the direction that the magnetic field is induced but how does this lead to the pendulum stopping, i.e. how is a force created in he opposite direction to the motion?

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  7 лет назад +1

      You can think of the pendulum as becoming a magnet. So for the two permanent magnets and the magnet representing the pendulum you would have,
      [S permanent magnet N] [N pendulum S] [S permanent magnet N]
      So as the pendulum tries to swing between the two permanent magnets it is being repelled by the two permanent magnets and hence slowed/stopped.

  • @rishabhdhenkawat6800
    @rishabhdhenkawat6800 7 лет назад

    So this can also generate a good amount of currrent

  • @ashugarg9603
    @ashugarg9603 7 лет назад

    sir can we do it without gap magnet
    because its to costly and is not available to me

  • @stephengoodlet7087
    @stephengoodlet7087 11 лет назад

    where did you get the pendulum from , website or shop

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  11 лет назад

      Here is a link to where you can purchase the pendulum www.pasco.com/prodCatalog/EM/EM-8642_magnetic-force-accessory/index.cfm

  • @guuguu7559
    @guuguu7559 3 года назад +1

    Best video thanks

  • @nidhikumari1351
    @nidhikumari1351 10 лет назад

    can you please tell me the strength of the magnet used ,thickness of metal sheet and the amount of heat it produced

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  10 лет назад +2

      The magnet was a variable gap magnet with two one inch (2.54 cm) diameter neodymium magnets, I am not sure what the field strength was. The aluminum pendulums were about 2 mm thick.

    • @nidhikumari1351
      @nidhikumari1351 10 лет назад

      thnxx...

  • @ctank08
    @ctank08 7 лет назад

    Is the kinetic energy from the paddle converted into thermal energy?

  • @amritmishra5956
    @amritmishra5956 4 года назад

    Very Helpful...thank u

  • @setusahu4189
    @setusahu4189 4 года назад

    Best explanation!

  • @tmeindia
    @tmeindia 6 лет назад

    Nice Presentation. Gives a thorough concept on eddy current braking. Can we use the same principle for generating torque? Please advise!

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  6 лет назад

      The force is resulting in a torque on the pendulum.

    • @tmeindia
      @tmeindia 6 лет назад

      Thanks for your reply. Are there any formulae for calculating Torque? If so please share!

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  6 лет назад

      Torque is the cross product between the force and the distance vector from the axis of rotation to the location where the force is being applied,
      t = F x r
      study.com/academy/lesson/what-is-torque-definition-equation-calculation.html

  • @juliangnzz
    @juliangnzz 7 лет назад

    Hi Michael!, I have a question... If there's a steady neodymium magnet and I horizontally slide an aluminum strip considerably close to it, the strip will slow down till it stops or it will just continue to slide but a bit slower?

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  7 лет назад +1

      Interesting question. As it slows down, the eddy currents will get smaller and smaller, but they should still be there and exert a force on the bar till it stops. But it won't actually be held in place by the magnet, so any additional outside forces and the bar will move. That is why when used as the brakes for a roller coaster magnetic brakes can't be used as block brakes so there has to be an additional brake to stop/lock the roller coaster.
      en.wikipedia.org/wiki/Brake_run
      physics.gu.se/LISEBERG/eng/magn_brakes.pdf

    • @juliangnzz
      @juliangnzz 7 лет назад

      Great!. Thank you for the answer, it helps me a lot. Have a good day.

  • @UshasiUpadhyay
    @UshasiUpadhyay 8 лет назад

    This is so helpful. Thanks sir.. I have just one question. Can you explain once more why the eddy current can't flow in the third pendulum?

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  8 лет назад +3

      There are still some eddy currents flowing, but they are greatly reduced because they cannot flow between the thin aluminum strips because of the air gaps. The only eddy currents that can flow are in the thin aluminum strips.

    • @UshasiUpadhyay
      @UshasiUpadhyay 8 лет назад

      Michael Melloch
      thanks a lot sir

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  8 лет назад +1

      You are welcome!

    • @kidamaroo
      @kidamaroo 8 лет назад +2

      The other two pendula are closed "loops" (I put loops in quote marks because the first one is a solid) and thus a current can flow in the bob (the swinging thing on the end of the pendulum). In the third pendulum, there isn't any connection between the ends of each "prong" (if that makes any sense) and thus no current can flow within the bob, so no damping.

  • @ashugarg9603
    @ashugarg9603 7 лет назад

    hey sir , i have lots of questions
    1)can i use 10mm x 1mm neodymium magnet if not plz justify .
    2) which type of sheet you have used steel or aluminium or stain less steel.
    3)how you have attached the magnets at that object which you have used .
    4)way you have attached the magnets in brief .
    plz justify beause i want to do it practically
    plz

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  7 лет назад

      1. yes, but the more magnetic flux the stronger the braking.
      2. the pendulums were aluminum
      3. Not sure of the question, the magnet I used was this one
      www.pasco.com/prodCatalog/EM/EM-8618_variable-gap-magnet/

  • @boop_my_snoot5273
    @boop_my_snoot5273 8 лет назад

    is it a neodymium magnet or just a regular magnet and where did you buy the aluminum like that )cuz of the shape of the aluminum(

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  8 лет назад

      This is the magnet, www.pasco.com/prodCatalog/EM/EM-8618_variable-gap-magnet/ and these are the paddles www.pasco.com/prodCatalog/EM/EM-8642_magnetic-force-accessory/index.cfm

  • @satyamporwal1422
    @satyamporwal1422 7 лет назад

    u r graet ...it clear all my doubts. .thanku

  • @jazbaatiya
    @jazbaatiya 9 лет назад

    Why does braking occur?
    I can;t understand why the current generated leads to the braking ( or the dampening of the oscillations, if i may say ) ?
    I understood everything else in this video, just this fact. Please help.

    • @electricandmagneticfields2314
      @electricandmagneticfields2314  9 лет назад +1

      +Kartikey Misra A current will generate a magnetic field. (See this video demonstration of a current turning a coiled wire into a magnet ruclips.net/video/s-qHfqYAvaw/видео.html) So the induced current in the aluminum paddle will generate a magnetic field essentially turning the aluminum paddle into a magnet. It is the interaction between the induced magnetic field in the aluminum paddle and the permanent magnet that does the braking.

  • @richbinaz
    @richbinaz 9 месяцев назад

    Hello professor Melloch,
    My name is Rich and I was wondering if you could give me an opinion on a possible solution to a problem I’m having with a set of carburetors that would involve eddy current damping.

    The problem I’m having seems to be caused by the vacuum operated parts of the carbs lifting too early and fluttering.
    When this occurs, the engine quickly loses power and stalls, probably from an over rich condition.
    Here is a video of that happening; it should start at an appropriate time index.
    There is a white dot on the #3 throttle slide ( 3rd from the left), it bounces rapidly as the throttle is opened.
    ruclips.net/video/VtmbGLGt3qw/видео.html
    What I’m wondering is if I could put a small magnet(s) in the plastic throttle slide ears as a way to damp out the fluttering. Not sure what the carbs are made of - Aluminum or Zinc or some alloy in between. This video starts at a point showing the slide suspended in the carb body.
    ruclips.net/video/6sd-YwEv0Jo/видео.html
    I think the fluttering is caused by the air intake pulse on this 4 stroke engine and a lack of slide damping.
    I would appreciate your opinion as an expert in this field.
    Thanks

  • @Rat0nCrack
    @Rat0nCrack 11 лет назад

    I don't understand anything you are saying, but it's pretty interesting.

    • @klab3929
      @klab3929 5 лет назад

      very simply put: when it swings by it generates energy in the metal, and that energy makes a magnetic field which kinda makes it attract to the aluminium so the more movement the more energy is generated the stronger the field is and also the hotter the metal gets

  • @vedgadge8659
    @vedgadge8659 4 года назад

    Thank you sir very nicely explained!

  • @siddhiahuja9973
    @siddhiahuja9973 2 года назад

    you are perfect. thank u so much for this

  • @alishakir998
    @alishakir998 4 года назад

    THX . I,m from IQ (IRAQ)

  • @nidhikumari1351
    @nidhikumari1351 10 лет назад

    please reply fast...i really need it..

  • @whatitmeans
    @whatitmeans Год назад

    Please let me propose the following model to describe the pendulum position: for some positive constants {a, b}, the angle respect to the vertical x(t) should follow, in order of achieving a finite extinction time, something of the form:
    x''+ a sgn(x') sqrt(|x'|) [sqrt(2)/4 +
    |x'|^(3/2)] + b sin(x) = 0
    hope you could try it matching the constants with experimental results, I am quite sure you aren't going to be dissapointed.

  • @shreyathalanki6095
    @shreyathalanki6095 5 лет назад

    Thanks a lot sir! This helped me a lot :)

  • @edenislive
    @edenislive 3 года назад +1

    And that is what we call visualisation. Our teachers explains us this on blackboard and we don't understand a thing.

  • @MB25MA
    @MB25MA 9 лет назад

    Well ,explained.

  • @chillmemes-n3d
    @chillmemes-n3d 6 лет назад +1

    Sir , I think you r wrong , what you r trying to say is that , electro magnetic damping happens due to change in magnetic field , well it's wrong . Let me explain , change in magnetic field produces induced electric filed.Change in magnetic flux or Eddy current causes electro magnetic damping . There is a difference .

  • @darren7788
    @darren7788 7 лет назад

    Sir,Can we use stainless steel paddles instead of alluminium???

  • @yusraAwad
    @yusraAwad 7 месяцев назад +1

    اكو عراقيين لو وحدي هين😂

    • @q.0_f
      @q.0_f 7 месяцев назад

      اي

  • @متىالفرجمتىالفرج
    @متىالفرجمتىالفرج Год назад +4

    منو سادس علمي يابة

  • @prashanttripathi7545
    @prashanttripathi7545 6 лет назад +1

    Awesome application............

  • @protabarak7857
    @protabarak7857 4 года назад +2

    من العائله الكتيبيه 😇😇😇

    • @حسينكريم-ض2د
      @حسينكريم-ض2د 4 года назад +1

      يهلا، 💪💪

    • @protabarak7857
      @protabarak7857 4 года назад +1

      @@حسينكريم-ض2د فييك تعال انضم للقناة هاي
      @ebbhdhdhh

    • @حسينكريم-ض2د
      @حسينكريم-ض2د 4 года назад +1

      @@protabarak7857 قناه تلي لو يوتيوب ☹️😌

    • @protabarak7857
      @protabarak7857 4 года назад +1

      @@حسينكريم-ض2د لا تلي قناة تحفيزيه مالتي

    • @حسينكريم-ض2د
      @حسينكريم-ض2د 4 года назад +1

      @@protabarak7857 دخلت عليها ربي يوفقج ان شاء الله وعاشت ايدج 💪💪
      ان شاء الله تحققين حلمج وتصيرين #مهندسه
      وان شاء الله اني هم #مهندس ☹️💔

  • @taquionAtemporal
    @taquionAtemporal 10 лет назад +1

    wow! Excelent !

  • @LsEagle18
    @LsEagle18 25 дней назад

    thank you so much sir

  • @tufotostudio
    @tufotostudio 2 месяца назад

    Got it, thanks!

  • @dokamfa2161
    @dokamfa2161 Год назад

    Thank You so much

  • @a.g.enterprises9289
    @a.g.enterprises9289 7 лет назад

    U r good sir

  • @mix_5907
    @mix_5907 3 года назад

    اللى جاى من عند الاستاذ محمد البنا ليك

  • @CyberFiber
    @CyberFiber 7 лет назад

    Thanks a lot...Sir😊