Rotary Electrostatic Motor

[@Greg_Chase]

Very clear explanation of what creates the rotation - just excellent. I study electrostatic turbines, aka electrostatic motors. If a very light load, or no load, is placed on the rotating part, and you can still find a practical use for the rotation, it is a reliable way to get rotation without the need of a motor and controller - all that's required is the charge separation provided by the DC supply and the ground. Benjamin Franklin created an electrostatic motor - if you do a web search on "Ben Franklin electrostatic motor" there are links to it. He built his electrostatic turbine in the year 1750. Thank you for the very helpful explanation for laypeople on why the rotation occurs.

[@electricandmagneticfields2314]

Thanks for the kind words and the information on Franklin's electrostatic motor.

[@arquitectronico]

Excellent explanation! I´ve heard a lot of this motor but never wonder how it works! Thanks for sharing!

[@electricandmagneticfields2314]

You are welcome!

[@JuGGerJuGGs]

In the video the cup spins clockwise, is that more likely than counterclockwise? Also why doesn't the cup just tilt away from the wire (it has some sort of torque instead, why is this?). Where does the angular force come from?

[@electricandmagneticfields2314]

If it was completely symmetrical it would be equally likely to start spinning clockwise or counter clockwise. There is probably some asymmetry, my wire not pointing directly at the cup, that gives it some preferential direction to spin. This is also why it doesn't just tilt. Also imagine pushing the cup with some pointed object. It would be hard to balance it in a tilted position without it slipping to one side or the other and rotating.

[@boblacovara2413]

very nicely done. clear explanation. simple construction. btw, for those concerned about 10 kv from a van de Graff, what voltage do you think is present in household static electricity?

[@vptech9861]

You need a stable DC high voltage generator for this experiment, so no electrostatically charge material present in any house can work for this. (And don't even think about mains voltage, dangerous but however at a far too low voltage).

[@marianl8718]

The voltage in household static electricity can be even bigger !

[@neutronenstern.]

​@@vptech9861 It will only be stable as long as there is no load. As soon as you touch it,you act as a load. And the voltage will go to nearly 0V almoust instantly.

[@israelg99]

You are a genius. Very useful, thank you!

[@sannyyu8570]

Amazing, I love this experiment. Very Helpful. Thanks!

[@ihtsarl9115]

Great Video Great Explanation! If we try this with a high voltage electronic ladder generator will it still rotate ? Would you try it?

[@AMOGHAJAYANTHMK]

Very great video, I can't wait to try it out. But the cup is rotating so fast, so how can air molecules be ionised and neutralised so fast?

[@electricandmagneticfields2314]

+AMOGHA JAYANTH MK It is probably very difficult to model this ionization and flow of charge in the air. It is not something I have ever looked into.

[@anerdinthehouse]

Air molecules travel at at very very high speeds.

[@skylerwd6]

Well, since gas atoms and molecules tend to bounce around at somewhere near the speed of sound, the amount of time it takes for the ionized atoms to go from point-to-point is almost nothing.

[@Johnnyfandango1]

Fantastic explanation, thanks very much👍👍

[@electricandmagneticfields2314]

You are welcome!

[@MaleAdaptor]

Thankyou. It is great that you also explained how it works.

[@pugalstech]

Nice video

[@stigsandstrom7417]

Tanks a very nice experimant and perfect explanation Stig Sandström

[@cosmolearner5562]

Why you left gaps for aluminium foil on the plastic cup...??

[@kwakhyogil]

Thank you for your easy demonstration. Please let me know the way how to get 10kV

[@electricandmagneticfields2314]

Build a van de Graaff generator as shown in this video Van de Graaff generator

[@vptech9861]

Depending on what you prefer (mechanics or electronic circuits) you can also chose the one described in this video: kzbin.info/www/bejne/l5uknKhsr7qihKc

[@devinmccloud]

If you take a compass and put it next to the so called Vandegraf lead is it showing south pole? And if you do the same with the other lead (ground) is it showing north pole?

[@almeindertsma]

Tanks for this perfect explanation

[@medicalmisinformation]

Yes! Tanks a yacht!

[@AzEsm777]

Very nice effect! While watching I did remember an experimental ship of Jaque Ives Cousteau, visited America once upon a day. There was a rotary construction used instead of classics... Magnus Effect, that is 100 years old. What if?... Converging kindly demonstrated by you principle and a Magnus construction. Very attractive idea, isn't? Making a handy rotation by means of static electricity plant, without mechanical transformation. Well, I would think about... Seriously. 10 kV, sorry, professor, what's the generator? Van de Great, they write here. I am not very familiar to your american English, excuse me. :/

[@electricandmagneticfields2314]

Yes I used a Van de Graaff generator. Actually one I built, kzbin.info/www/bejne/b3bMea1rr7eFj6s

[@JuGGerJuGGs]

I am a student at Queen's University and I have a physics project that is based on this idea. Is there any way of making this a lot stronger? What would I have to do to increase the angular velocity and increase the torque applied to the cup? Maybe another source other than a van de graaff? I would like to know the math that would allow me to calculate the exact current or voltage that would allow me to spin not only a light cup like in this video, but something on the scale of 2-3lbs spinning at the same speed as you have with the cup. I have already made this apparatus, it spins quite well, I have added a base to the cup with a hole in the middle to stop any swaying. I just want to know how to tackle the problem to make it stronger.

[@electricandmagneticfields2314]

A higher voltage, but you will probably be limited to the voltage you can go up to by dielectric breakdown of the air. How about instead of one wire on each side multiple wires? I like your idea of the base to stop the swaying.

[@neutronenstern.]

Might be very very late, but the force is due to electric fields. Thus increasing the area will increase the force. So in addition to the wire, which will get charges to the plates, you can use a bigger area of aluminium foil right next to it. It will act as a bigger stator, than the wire itselve is. You will have to connect it to the sane voltage as the wire is comnected to, for it to work. To make it spin faster while maintaning high tourque you might have to get it closer to the rotor. Also you can of course increase the voltage.

[@ALATIR]

Good afternoon. What voltage is applied to the plates?

[@electricandmagneticfields2314]

I was using a Van de Graaff generator, so it was a high DC bias. Maybe 20,000 to 30,000 Volts.

[@horus2779]

Are you on Facebook mate, there was a electrostatic motor that was being made and I ordered but 6 weeks later not in stock, it used copper foil but it did not separate it, instead they built a hexagon shape out of continuess copper foil, with convergent edges of hexagon being points of concentration ?

[@electricandmagneticfields2314]

I'm not on Facebook. Not exactly sure of that structure you are describing. Do you have a link to it?

[@小菊-p9q]

Does it make corona discharge? Thanks

[@MacLuckyPTP]

Now repeat the experminent placing the cup and the calbles in a vacum chamber. How do you explain the rotating cup now?

[@electricandmagneticfields2314]

It won't

[@MacLuckyPTP]

@@electricandmagneticfields2314 It should not rotate. That's the hypothesis. A demonstration would make the presentation 100% scientific.

[@macuskrakow449]

@@electricandmagneticfields2314 It will work for the same reason that power transmission works in a vacum.

[@electricandmagneticfields2314]

@@MacLuckyPTP If I had access to a vacuum chamber, but unfortunately I don't.

[@electricandmagneticfields2314]

@@macuskrakow449 What type of power transmission are you talking about?

[@durgakushwaha1276]

Amezing experiment😊

[@electricandmagneticfields2314]

Thank you!

[@mariusionita9129]

So the Electrostatika car is a combination of an electrostatic motor and an electrostatic generator. Instead drain current in the ground (ions) in the drain neutralization Leyden jar. It is generated by friction electrostatic current (hand-on) then this current drives the electrostatic motor and the current after the neutralization of ions accumulates in a leyda bottle. If conductive brushes are disposed obliquely, they produce an amplified rotation in electrostatic motors. The 1000-point question is how do we remove (use) the current from the leyda bottle ?!

[@anishrajanparavur]

Will this work if the medium between cup and electrodes are vacuum.

[@AzEsm777]

O2- makes a pressure (on the left clockwise side after grounded electrode (cathode, I suppose) when gets its neutralizing positive charge. This means no vacuum is concerned for experiment. Simple air in normal conditions.

[@magna59]

Great to see your work . So ............ how can we " use " this .

[@electricandmagneticfields2314]

Electrostatic motors were the first motors developed in the 1700s. They are limited in how much power they provide and they require high voltages. Motors with coils based on magnetic attraction and repulsion became the convention. There has been renewed interest in electrostatic motors for microelectromechanical systems (MEMS). These are systems built using integrated circuit processing techniques in silicon. You cannot built a motor with windings in a MEMS, but you can build electrostatic motors. There are some videos at this web site showing working MEMS motors, www.sandia.gov/mstc/mems_info/movie_gallery.html

[@magna59]

Thank you for this helpful reply .

[@roauf-]

?? how you made your Van De Graaff generator

[@electricandmagneticfields2314]

Here is a video on it kzbin.info/www/bejne/b3bMea1rr7eFj6s

[@kephalopod3054]

Do you have to worry about possible X-rays being emitted?

[@electricandmagneticfields2314]

You would need a vacuum for the electrons to be accelerated to a high-enough energy to generate X-rays. The colliding of the electrons with air molecules prevents such high energy from occurring.

[@marianl8718]

Rather worry about electrocution, the formation of ozone and nitrogen oxides, or the ultraviolet rays that appear during stronger discharges.

[@electricandmagneticfields2314]

@@marianl8718 never fear kzbin.info/www/bejne/sHatmmpnltChp7M

[@margelatutrandafirulgalben3156]

Is there any consumption of electricity?

[@electricandmagneticfields2314]

Yes but this is very, very, low power.

[@OrangeMesh_Technologies]

I assume the direction of rotation is random?

[@electricandmagneticfields2314]

Yes, the direction of rotation should be random.

[@pupper6044]

Hello, can you give more details explaining the gaps between the Al foils?

[@electricandmagneticfields2314]

Patrick Sarmiento The only requirement on the gaps is to electrically isolate the strips of Al foil. So the width of the gap should not be critical. Also the number of strips is not critical. I think it will work with as little as two strips, although a larger number of strips will probably result in more efficient charging and un-charging of the strips of Al and better rotation.

[@pupper6044]

Michael Melloch Thanks. You da real mvp.

[@vincenzopanella2705]

If i make rotate mechannically the plastic glass can i get a voltage ?

[@kephalopod3054]

You would need to have a static charge on the rotor to induce a voltage in the stator.

[@DukeLaCrosse20]

Do you make any ozone? Would this work in a vacuum?

[@electricandmagneticfields2314]

When operating just the van de graaff generator, which I am using to power this electrostatic motor, I have detected the smell of ozone. This electrostatic motor would work in a vacuum. You would have to get a large enough electric field to get emission of electrons from the Al foil facing the positive electrode. In this demonstration I am already getting a large enough electric field to get electron emission from the grounded electrode because of its high curvature.

[@Hindrik1986]

Very cool demonstration! But there are moving charges, so technically, this isn't an electrostatic motor. Very cool non the les!

[@electricandmagneticfields2314]

Hindrik Hoekstra Thanks. The term “Electrostatic Motor” is given to these types of motors where the mechanical motion is caused by repulsion and attraction of charge. You are correct that there is charge transfer to set up the repulsion. In all motors referred to as Electrostatic motors there is a continuous transfer of charge from the voltage source to ground through the motor. Another example is Franklin’s bells kzbin.info/www/bejne/iJKumWqQpLGXZq8

[@PoojaPatel-xc2xm]

will it work if we have 100 v van de graph generator??

[@electricandmagneticfields2314]

You have to get a large enough electric field intensity to ionize the air molecules. If you could make the gap small enough you would get a large enough electric field intensity with 100 V between the wire tip and aluminum on the cup.

[@peacewind827]

good! do you have scrip text? txs

[@spiritofhalloween9537]

could the strip be continuos and not cut up

[@electricandmagneticfields2314]

No, It will not work if the strip is continuous.

[@ahmadnab7969]

Can I make a generator from this moving motor?

[@electricandmagneticfields2314]

I'll have to think about that. You can build an electrostatic generator. Here is an example kzbin.info/www/bejne/j2iwe5WQic9-r9E

[@zoranpetrusevski5441]

Very good proccess

[@amoghbindal9457]

what if there was no space between the aluminium strips..???

[@electricandmagneticfields2314]

+amogh bindal It would not turn. The part of the conductor opposite the positively charged electrode could not become positively charged. So there would be no repulsive force between the electrode and the conductor on the cup, which is what makes the cup rotate. Any positive charge resulting on the conductor on the cup caused by the positive electrode could flow away leaving the conductor on the cup opposite the positive electrode always negatively charged. So there would be an attraction between the positive electrode and the conductor on the cup. Just to be sure I tried the experiment with one piece of aluminum all around the cup and it would not rotate.

[@amoghbindal9457]

+Michael Melloch thank you for answering.. :)

[@Red-Feather]

Why rotate counterclockwise?

[@electricandmagneticfields2314]

The direction of rotation can be in either direction. It would be hard to predict, depends on particular geometry between electrodes and cup.

[@pattayaguideorg]

Wow, thanks mate.

[@electricandmagneticfields2314]

You are welcome!

[@Tsjernobylol]

Van de Graaff! YEAH! go Holland!

[@kephalopod3054]

I guess it can rotate either way, more or less randomly unless there be some bias factor.

[@electricandmagneticfields2314]

Correct

[@aigleblanc3966]

je voudrais l'énergy d'ou viens telle ?

[@josecarlosalvaradodupont6176]

motor capacitor

[@ustadz_anonym]

How if it's in a space, without Oksigen..

[@electricandmagneticfields2314]

It would not work in a vacuum.

[@aigleblanc3966]

mais fais nous voir ton montage ok ton guoblet ????

[@haroonahmed4202]

plz teach the wimshurst wiring

[@electricandmagneticfields2314]

I plan to do a video building, demonstrating, and explaining a Wilmshurst machine this coming summer. It will take some effort to figure out how to clearly explain its operation.

[@haroonahmed4202]

Michael Melloch no u use generator that high v power supply I am talking about static current wimshurst like

[@lingali131]

I guess, this is the trick. The Spindel in a hollow pencil and the rest are simple

[@dashboard3672]

Nice video and good experiment i liket it but the explanation is not accurate to the subject for static charge and discharge the alluminum on static plastic.

[@mokh2o]

Can you make it accurate?

[@electricandmagneticfields2314]

Could you be specific as to what you believe is not accurate?

[@mokh2o]

I was not questioning the accuracy. I was asking the person who stated that there were inaccuracies to explain what they believed.

[@electricandmagneticfields2314]

mokh2o I meant to direct my question to Dash Board.

[@GSImproved90]

Casually says "ten thousand volts"....

[@electricandmagneticfields2314]

The source of the voltage is a van de graaff generator. The capacitance is low, so there is so little charge you barely feel it if you touch it.

[@ricomajestic]

That's nothing! You generate more than that every winter just by walking on your carpet!

[@JP-xy7yd]

Paul Bacon I don’t understand how is that 10k volts with those little wires ? I thought voltage needs a large space to travel through

[@hamoudahamouda749]

nice

[@reinhardebenhaizer6044]

pls make electroscope

[@electricandmagneticfields2314]

I have never made an electroscope, but in the following video I do discuss and demonstrate electroscopes kzbin.info/www/bejne/aobRmJquhbt2j9k

[@TheArctanx]

thank man

[@curranogrady9701]

cool

[@mintudoku9375]

I have seen alot of this electrostatic..... What is the use.... or its uses..... and why people interest in this useless.. .. i mean not in bad sense......... but for what puropose we are going to use it

[@electricandmagneticfields2314]

The interest is in building MEMS motors, kzbin.info/www/bejne/fZqqZpawg9uJaqM

[@TFOTLITBOK_P1_7]

A cup of Corona

[@speculesgorgoth4055]

Contact Jeff Williams he mines for gold. You are it he runs a KZbin also

[@pandupavan4964]

DS

[@asloobmudassar6869]

Incorrect explanation of the concept

[@electricandmagneticfields2314]

Would you care to enlighten me?

[@macuskrakow449]

This experiment is fantastic, but the explanation is outdated in 2021.

[@dorianmccarthy7602]

Useful information but sounding to patronising to be able to watch all of it.

[@МитрофанМартынов-я6ь]

Вот брихунишко ! Провода находятся на разных высотах !

[@electricandmagneticfields2314]

The different heights of the wires on the two sides does not matter.

[@МитрофанМартынов-я6ь]

+Michael Melloch : прекращай пародировать Дэвида Коперфильда и Гудини ! Руского брата Тебе не обмануть ! Хотя Твой опыт мне реально понравился ! 5+ !!!

[@CHITUS]

Amazing, I love this experiment. Very Helpful. Thanks!

[@ViniciusVA1]

nice