How does one estimate the field around a wire. Does it depend on the current flowing through it? The diameter of the wire?

Which metals can replace zinc and which metals can replace copper?

2024

Sir, can you do a video about the math and physics of wimshurst machines?

Excellent description of the working process of electron movement and ionisation energy. I really liked the clear and informative presentation. I wish I was one of your students.

Reminds me of van der waals interactions within cells !

Nvm got it

How do i make the led backward biased

sir, how many turn is the coil and how much voltage is supplied?

Yay. A.straight to the content.No begging for likes/etc.. B.Great simple audio. C.Clear diction from the presenter throughout D.All the bits laid out so we can see what is being used and assembled in realtime. .....😺even my moggie was watching. well done.

Beautiful demonstration sir❤

I like your video! Here's a youtube video I want to share with you and everyone! The title is : Continuous Electric Display (CED) In this video, I will do a short demonstration of a new analog display technology, made with static electricity.

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?

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Is that micro amps?

How much was this when you bought and where?

How long can this Leyden jar store energy(hold the charge) if you don’t discharge it?

I notice that in vulcanic storm there are more thunder than a rainy storm, due to the amount of ash and powder, so i wonder if this experiment could work using sand or ash instead of water. ? ?

In H_inside we multiply by mu naught?

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Really nice demo and explanation plus very interesting watching you make the Leydon Jar.

Elektromanyetik indüksiyonu Michael Faraday'ın gerçekleştirdiği bir deney benzeriyle göstereceğim. Burada bir ampermetre ve üç bobinim var. Bir döngülü, on döngülü ve yüz döngülü bobinlere sahibim. Ayrıca bir çubuk mıknatısım var ve ilk olarak tek döngülü bobini ampermetreye bağlayarak başlayacağım. Şimdi tek döngülü bobin ampermetreye bağlı ve çubuk mıknatısı bobinin içine sokup çıkaracağım, çok yakından izlerseniz ampermetre ibresinde hafif bir sapma görebilirsiniz. Şimdi on döngülü bobini bağlayayım ve aynı şeyi yapacağım. Çubuk mıknatısı bobinin içine sokup çıkarıyorum, şimdi ibrede daha fazla hareket görebilirsiniz. Gerçekten çok yavaş hareket ettiğimde küçük bir sapma görüyorsunuz ve hızlı hareket ettiğimde daha büyük bir sapma görüyorsunuz. Ayrıca mıknatıs içeri girdiğinde ibre sağa sapar ve dışarı çıktığında sola sapar, ancak mıknatıs hareket etmediğinde akım olmadığını gösteren herhangi bir sapma olmaz. Dolayısıyla manyetik alan bobine girdiğinde pozitif akım akar, bobinden çıktığında ise negatif akım akar. Şimdi yüz döngülü bobini bağlayayım. Mıknatısı çok yavaş hareket ettirdiğimde sağa sapma görüyorsunuz, dışarı çıkardığımda ise sola sapma. Hızlı hareket ettiğimde ise çok daha büyük bir sapma görüyorsunuz. Yani manyetik alanın değişim hızı akımı etkiler. Gördük ki bobindeki dönüş sayısı arttıkça akım artar, dolayısıyla akım dönüş sayısına orantılıdır. Ayrıca manyetik akı değişiminin hızı arttıkça akımın da arttığını gördük. Şimdi eğer devrenin toplam direncini izleseydik, yani bobinin, tellerin ve ampermetrenin direncini, akımın devrenin toplam direncine ters orantılı olduğunu bulurduk. Bu denklem genellikle i = -n / R decide ET olarak yazılır ve bu eksi işaretinin Lenz yasası hakkında gelecekteki bir videoda anlamını tartışacağız. Dolayısıyla denklemin her iki tarafını R ile çarptığımızda R I = -n decide ET ve direnç ile akım bir gerilim veya potansiyel oluşturur, buna elektromotor kuvvet denir ve elektromotor kuvvet -n decide ET olarak eşitlenir ve bu Faraday'ın yasası olarak bilinir.

I am going to demonstrate electromagnetic induction with an experiment similar to the one that michael faraday performed. I have an ammeter here and i have three coils. I have a coil with one loop ten loops and 100 loops. I also have a bar magnet and i will start by connecting the singel loop coil to the ammeter. I now have the single loop coil connected to the ammeter and i am going to move the bar magnet into and out of the coil and if you watch very closely you can see a slight deflection of the ammeter needle okay so now let me connect the ten loop coil. Then i am going to do the same thing. I am going to move the bar magnet in and out of the coil now you can see more movement of the needle in fact if i go very slowly you see just a little bit of a deflection and if i go quickly you see a greater amount of deflection also as the magnet is going in the needle deflects to the right and as i pull the magnet out it deflects to the left but when the magnet isn't moving there's no deflection indicating no current flowing. So when the magnetic field is changing going into the coil there's a positive current flowing when it's changing coming out of the coil there's a negative current flowing and now let me connect the hundred loop coil. I will start by moving the magnet in very slowly you see a deflection to the right pull it out to the left if i go in quickly you see a much greater deflection. So the rate of change of the magnetic field affects the current. We saw that as the number of turns in the coil increase the current increase so the current is proportional to the number of turns which we'll use and to represent we also saw that the current increase as the rate of change of magnetic flux inside the coil increase so decide et represents the change in the magnetic flux inside the coil now if we were to monitor the resistance of the whole circuit that is of the coil and the wires in the ammeter we would find that the current was inversely proportional to the total resistance of the circuit now this equation is usually written as i is equal to minus n over R decide ET and we'll talk about the significance of this minus sign in a future video on lenz's law so now if we multiply both sides of the equation by R we get R I equals minus and sie DT and resistance times the current is a voltage or a potential we call that the electro-motive force and so the electro-motive force is equal to minus n decide ET and this is known as Faraday's law.

Surisped nobodys here becomes of rooms

Can you give a theoretical proof by considering charges and force components on them at both pointed and blunt ends , I have been looking for one for a long time .

Why does this attraction work only on the continuous part of the jet (at the top) but not on the water droplets after the jet breakup? (15 cm lower)

But what do the particles do in a fluid.? You had to tap the board, so there is friction between particles and surface. What happens when this friction is removed by placing particles in solution. We then see 3 dimensions, and I suspect, a map of the coil arrangement. hmmmmmm

1) Although your hand cannot detect a difference, does it take more force to push the magnet through the 100 loop vs 1 loop ? 2) Do we understand, at the quantum level, why this electric force generation occurs ? 3) I noticed your meter bounced, which implies when removing the magnet, the field collapses into an AC current, which is not possible. You might mention why that meter is bouncing. Thanks. -- Some retired software guy. -- 5.22.24

You sir must be a teacher. I learned stuff without paying much attention! (I like watching videos while cooking etc)

اكو عراقيين لو وحدي هين😂

Best demonstration and explanation I have ever seen! 💗💗💗

Wouldn't the flow be over too when all the Cl / Na ions are neutralized?

"Electromagnetic Fields and Waves" by Lorrain & Corson (3rd Edition) covers dielectrics in Chapters 9 & 10 including some enlightening diagrams elaborating on E & D fields and bound & free charge. The problems are interesting as well. I used the 2nd Edition back in the day. Nice presentation!

How did your Casio fare from the Van de Graaff sparks? :)

កន្តួយម៉ែហែង❤

woag! awesome!

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

Thank you very much!

im making one, but i have a motor which is very very very slow. its a lego motor. Will it still work?

How could someone get these tools?

great and practical!!! thank you

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. kzfaq.info/get/bejne/jNqdlap9rNqXoas.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. kzfaq.info/get/bejne/bNmUYLyoqtyUeqM.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

thank you so much

If it were big enough would a leyden jar be able to power a 2 story house if SHTF and for how long ?

I dont know why my teacher wasted my whole time Why the schools do not teach the same even after taking a handsome amount of money They are just making students confused

10:40 when the camera unfocuses, is that because of the sudeen light exposition or because of electromagnetic interactions?

Fantastic explanation, thanks very much👍👍

So it’s an old school capacitor?