How a Van de Graaff Generator Works

  Рет қаралды 376,030

RimstarOrg

RimstarOrg

Күн бұрын

Detailed explanation down to the electrons and protons on how a Van de Graaff generator works. Includes the triboelectric effect between the rollers and belt, corona discharge and photoelectric effect between the belt and brushes/combs, and Faraday ice pail effect at the top dome/bowl. Shows how arcing/sparks happen and how strong electric fields contribute to creating ions and plasma for making air gaps electrically conductive.
This video has correct English captions. Click on the CC button at the bottom of the video to see them.
See also, Triboelectric effect/series or triboelectricity:
• Triboelectric effect/s...
How to Make/Build a Van de Graaff Generator Part 1 (Homemade/DIY):
• How to Make/Build a Va...
Magnetic field using horseshoe magnet, keeper and iron filings:
• Magnetic Fields, Keepe...
I purchased the big and small Van de Graaff generators from Information Unlimited many years ago:
amazing1.com
The big one is made and also sold by Science First:
www.sciencefirst.com
I don't see it any more on their website but they have others. They also sell spare belts but don't say what they're made of.
To see how to make your own Van de Graaff generator:
rimstar.org/equip/build_make_v...
Follow me on Twitter:
#!/RimStarz
rimstar.org

Пікірлер: 550
@rogueart7706
@rogueart7706 4 жыл бұрын
Excellent video! You are the only person on KZfaq who actually explains this. Thanks a bunch!!
@6123ish
@6123ish 4 жыл бұрын
Absolutely agree with you. I have watched many videos about this topic, no one can explain how the positive charges accumulate on the outer surface of the belt, but he did.
@RimstarOrg
@RimstarOrg 11 жыл бұрын
Thanks! I'm glad you liked it. It was a lot of work so your feedback is appreciated. -Steve
@josephjoe9525
@josephjoe9525 2 жыл бұрын
Finally, a person who explains this in detail! I don't get why other youtubers explain the Van de Graaff generator as a machine that simply collects electrons and they leave at that explanation, which is vague and does not really makes sense.
@RimstarOrg
@RimstarOrg 11 жыл бұрын
I'm glad my presentation helps! Thanks for letting me know.
@sdilarasenel
@sdilarasenel 3 жыл бұрын
To understand Van de Graff Generator, I watched a lot of videos and this one was the most informative and useful one for me. Thank you for your effort! :)👏
@Carlos2312
@Carlos2312 11 жыл бұрын
Just discovered you channel. I'm a fourth semester electric engineering student from Venezuela and this is just breathtaking for me. Thank you for the videos!
@deepshabad
@deepshabad 6 жыл бұрын
This is the best video I have seen for some one who wants to understand the Van De Graaff generator. Thanks Rimstar.
@RimstarOrg
@RimstarOrg 11 жыл бұрын
You're welcome. And thanks for you generous feedback. I'm kind of fond of this one myself but it's reassuring to hear it from others.
@bsshabssha
@bsshabssha 3 жыл бұрын
Great Great Great. Thanks. First time in my life to understand clear easy I try many channels at you youtube but you are the best
@ajanki34
@ajanki34 11 жыл бұрын
I have to agree with everyone - your explanation of how the charges move and where they're coming form and going to is perfect. This video needs to be made into a section in a physics or an electrical engineering text book, seriously. Thank you for laying it out. Your video is in my play list. I'm going to make a Van De Graaff generator too.
@imanultrastarwarrior801
@imanultrastarwarrior801 7 жыл бұрын
I gotta say you really did well on explaining this device, and even the effects that happen on the machine
@darkcnotion
@darkcnotion 4 жыл бұрын
Best explanation and the questions give better insight, thanks
@RimstarOrg
@RimstarOrg 11 жыл бұрын
Thanks! And thanks for the feedback. It's good to know the explanation works.
@felixmeyer1972
@felixmeyer1972 Жыл бұрын
Das ist eine gute "How to"-Anleitung. Interessant war die Verwendung von Isolierband für den Antriebsriemen und wie man es auf die Rollen legt. Danke für die Zeit und Mühe, diese Videos zu machen. Es hilft vielen Menschen und inspiriert sie, etwas aufzubauen.
@50shadesofmycow
@50shadesofmycow 4 жыл бұрын
Thank you very much for all the information! Helped me understand how to build my future Van de Graaff generator! (Already ordered the parts)
@WhakyD
@WhakyD 8 жыл бұрын
Going to have to watch this many times. Very detailed. Thanks!
@taquenos
@taquenos 8 жыл бұрын
Thank you for the video, it's the best explanation I found on Van Der Graaf generator, now I can build my own knowing how it works and why.
@poojakulkarni9175
@poojakulkarni9175 9 жыл бұрын
its the best video on van de graaff generator..thanks for uploading it
@FANBASEALPHA2
@FANBASEALPHA2 11 жыл бұрын
This is just simply an excellent description. A comprehensive class unto itself. The best on the internet. Thanks for your efforts.
@ishitasagar8909
@ishitasagar8909 11 жыл бұрын
The triboelectric effect's video really helped.. Thanks a lot for helping and clearing my doubts :)
@tiarne_i_think7537
@tiarne_i_think7537 6 жыл бұрын
Thanks so much! This has helped my physics revision improve SO WELL x
@garyscott5510
@garyscott5510 5 жыл бұрын
Comprehensive video! Thank you for making it
@mrbhave
@mrbhave 10 жыл бұрын
If you're not an educator by trade, you have certainly earned this educator's respect. Very well done.
@RimstarOrg
@RimstarOrg 10 жыл бұрын
Thanks. That's a big complement indeed. I spent 13 years traveling around the world teaching for a software company, I currently teach a few times a year for an adult education program, and have done other teaching and course development over the years. I can't seem to stop myself. :)
@mrbhave
@mrbhave 10 жыл бұрын
It's an insidious passion of mine, too, friend. Learn something new everyday, I say. It keeps Alzheimer's and boredom at bay.
@reverseengineering1931
@reverseengineering1931 5 ай бұрын
Best video to clarify all doubts about Faraday cage etc.
@betatester03
@betatester03 4 жыл бұрын
Wow, this was so much more informative than I expected from a KZfaq video. Excellent video!
@RimstarOrg
@RimstarOrg 4 жыл бұрын
Thanks. It's a lot of fun (but also a huge amount of work) making these detailed ones. Two others which I'm proud of are How a Crystal Radio Works kzfaq.info/get/bejne/ZpOAg8SjuNPbpHk.html and How a Wimshurst Machine Works kzfaq.info/get/bejne/pKdklKaVmteqh6c.html
@learnerrahat5320
@learnerrahat5320 2 жыл бұрын
@@RimstarOrg you didnt leave a single little question. every small details was explained. nce work. thanks.
@davef5208
@davef5208 2 жыл бұрын
You explain it much better than Plasma Channel
@yellow6ird
@yellow6ird 9 жыл бұрын
Awesome awesome video, thank you so much! Answered a lot of my questions I couldn't gets my heads around!
@pedropalhari7849
@pedropalhari7849 5 жыл бұрын
even though I do not know English, the video is so didactic that I understood, thank you very much!!! from Brazil, translated by google translate hehehe
@RimstarOrg
@RimstarOrg 12 жыл бұрын
Wow! You're welcome! I'm delighted you liked it so much. And thanks for saying so.
@quantum-inc
@quantum-inc 5 жыл бұрын
Nice job , good explanation , a lot going on there
@cynthiasathees9220
@cynthiasathees9220 11 жыл бұрын
your video is amazing it really helped to understand what a van de graaf genarator is
@Jeplans
@Jeplans 8 жыл бұрын
Great stuff, I always enjoy your videos.
@bobthetiger11
@bobthetiger11 12 жыл бұрын
AMAZING!!!!! BEST EXPLANATION I HAVE SEEN!!!! THANKS SO MUCH!!
@egr8735
@egr8735 10 жыл бұрын
Thanks! During the last days I have been trying to make my own generator without success. Your video helps me a lot to see why my attempt didn't work. Now I *finally* understand why there is some charge accumulation at all (ie, which is the origin of the first charge gradient).
@RimstarOrg
@RimstarOrg 10 жыл бұрын
Glad to hear it helps! Know how it works makes all the difference between engineering and guesswork. Let us know how it goes.
@antoniobellini7465
@antoniobellini7465 3 жыл бұрын
Great an complete explanation! Thanks a lot.
@RimstarOrg
@RimstarOrg 11 жыл бұрын
Thanks. I'm glad to hear it helped.
@SalsaKingoftheApes
@SalsaKingoftheApes 7 ай бұрын
Excellent explanation
@deatheatertarik8903
@deatheatertarik8903 5 жыл бұрын
that's amazing thank you so much for the video, it is a good explanation going into details. god bless you man
@jibin180
@jibin180 3 жыл бұрын
Wonderfull explanation... Thankz a lot..
@daytonharmon94
@daytonharmon94 12 жыл бұрын
Wow this is an amazing video. I love learning things like this thank you so much for helping me understand better
@Crazybones111LIVE
@Crazybones111LIVE 11 жыл бұрын
Very clear, nice and informative. Helps allot!
@dhanunjaynaidu2900
@dhanunjaynaidu2900 4 жыл бұрын
It's great explanation 👍
@catherinefei6629
@catherinefei6629 7 жыл бұрын
Such a nice video to study for Physics Exam!! Thank you!
@nguyenthanhat3547
@nguyenthanhat3547 11 жыл бұрын
my bad at english and your good at presentation make my mind blow :)) ho ho ho thank you. Such a good guy. Spend a lot of his time to help people :D
@bmzaron713
@bmzaron713 2 жыл бұрын
Thanks a lot for the video and the detail
@georgehayes1054
@georgehayes1054 6 жыл бұрын
I searched hours for this explanation.. THANK YOU
@wallowood
@wallowood 12 жыл бұрын
So informative and visual. Thank you so much.
@sipos66
@sipos66 11 жыл бұрын
Very informative. I wondered how they worked. I just wanted to see how the dome was constructed and attached to the circuit. Thanks.
@Pituophis666
@Pituophis666 11 жыл бұрын
Excellent explanation, thank you.
@sumankanta5750
@sumankanta5750 3 жыл бұрын
Wonderful explanation
@sabitkondakc9147
@sabitkondakc9147 8 жыл бұрын
That was so informative thanks for sharing.
@squeaksallan8195
@squeaksallan8195 2 жыл бұрын
Thank you for good clear information.
@the27club.
@the27club. 3 жыл бұрын
Great explanation 👍
@Studio-df7ge
@Studio-df7ge 6 жыл бұрын
Thank you very much! Well explained
@7beers
@7beers 10 жыл бұрын
Superbly done.
@4pharaoh
@4pharaoh 7 жыл бұрын
Very well done. Thank You
@RimstarOrg
@RimstarOrg 11 жыл бұрын
Oh good, glad to hear it helped. Thanks.
@RimstarOrg
@RimstarOrg 10 жыл бұрын
I'm glad you liked it, thanks. And welcome to interacting on KZfaq.
@JamHir01
@JamHir01 10 жыл бұрын
It's my first time to log-in my account to KZfaq. To like and comment to your video. Very informative, thank you very much! :)
@chemistkrn
@chemistkrn 11 жыл бұрын
Thank you ... The Video is much informative and helpful..
@MrElapid
@MrElapid Жыл бұрын
You gave a great explanation thanks for putting this up! Was horrified at some of the comments below the primary grades K-12 sure aren't what they used to be. Having fun printing conductive PLA and making little induction machines and also just finished a VDG using a printed sphere. Awesome retirement fun as I can now make conductors in most any shape within reason. Did a 200mm. sphere with the bottom curving gently up to the top end of the tube, looks a little like a torus from the bottom. Or a sphere that somebody sat on. Results v. good. Sounds like you're having fun with this me too it's interesting stuff.
@RimstarOrg
@RimstarOrg 11 жыл бұрын
You're welcome. I'm glad you like the videos. Thanks for watching them!
@littleBodyguard
@littleBodyguard 8 жыл бұрын
Great video. keep up the good work.
@RimstarOrg
@RimstarOrg 12 жыл бұрын
You're welcome. Thanks for the feedback.
@RimstarOrg
@RimstarOrg 12 жыл бұрын
You're welcome. I hope my answers helped. Cheers.
@RimstarOrg
@RimstarOrg 12 жыл бұрын
Thanks. I tried to make it as complete as I could for the popular types of Van de Graaffs at least.
@RimstarOrg
@RimstarOrg 11 жыл бұрын
I'm glad to hear it. I try to leave nothing to the imagination so maybe that's why my explanation works for you. Thanks for the feedback.
@RimstarOrg
@RimstarOrg 12 жыл бұрын
That's a perfectly reasonable question. A big use for them in the past was for generating high voltages, in the millions of volts, for particle accelerators for doing science experiments. I don't know if any particle accelerators still use them. These days they're mostly used in classrooms for teaching about electrostatics or by hobbyists who just like to play around with high voltages. Science museums also use them for demonstrating electrostatic phenomenon.
@ted_van_loon
@ted_van_loon 2 жыл бұрын
the list of materials is nice, this way you don't need to find a very specific material.
@RimstarOrg
@RimstarOrg 11 жыл бұрын
Yes, by sharper surface I mean smaller in diameter. Assuming 79kv between two domes, the smallest diameter dome has the stronger electric field around it. The air molecules will be repelled from the smaller diameter one, and be attracted to the larger diameter one. And you're welcome. Glad I can help.
@RimstarOrg
@RimstarOrg 11 жыл бұрын
Thanks! That's high praise; that's a good school.
@augurelite
@augurelite 11 жыл бұрын
Great video!!
@RimstarOrg
@RimstarOrg 11 жыл бұрын
Thanks. The section explaining how the Faraday cage works is a little contentious since I wasn't using the standard approach to explaining it with just fields. But I really wanted to do it at the electron and proton level; more tangible, and also consistent with the rest of it. Have fun making your Van de Graaff generator. Be sure and check out my videos on that topic and ask questions if you run into problems.
@aafaqin
@aafaqin 11 жыл бұрын
hey bro u cleared tons of my doubts!!!!!!
@jayashreekuila2637
@jayashreekuila2637 6 жыл бұрын
Thank you so much for this
@debashisbose
@debashisbose 8 жыл бұрын
Thanks Sir, Its Very good.
@joonatankylmaniemi6887
@joonatankylmaniemi6887 5 жыл бұрын
A very useful video
@RimstarOrg
@RimstarOrg 11 жыл бұрын
Yes, the effect only charges the inner side of the belt. But the main reason is that the charge on the inner side of the belt is spread out over the larger inner area of the belt. The roller, however, has a smaller surface area and so the charge is more compact, the voltage is higher. So we use that higher voltage to pull more charge onto the outer surface of the belt. As a result, the outer surface of the belt has more charge than the inner surface. It's that larger charge that we're after.
@0001Nikola
@0001Nikola 12 жыл бұрын
K, thx allot dude, this vid is great as well as the others on your channel. Keep up the good work :)
@RimstarOrg
@RimstarOrg 12 жыл бұрын
@aethersheep Great! I hope you aced it.
@drbobhacker1803
@drbobhacker1803 11 жыл бұрын
Awesome work! Now I understand it! Too bad this was not around when I was a college student.
@leandros_ab
@leandros_ab 6 жыл бұрын
Very helpful!
@MrJamaal11
@MrJamaal11 11 жыл бұрын
amazing. your better than my physics teacher who went to oxford!!!
@MrYamashici
@MrYamashici 10 жыл бұрын
great job!
@videos12344444444
@videos12344444444 10 жыл бұрын
the best explanation...
@Higgzboson
@Higgzboson 6 жыл бұрын
Great video.. Bro...
@RimstarOrg
@RimstarOrg 11 жыл бұрын
You're welcome. I'm glad I could help.
@RimstarOrg
@RimstarOrg 12 жыл бұрын
By the way, which Myles? There seem to be two of them depending on if you include user in the URL.
@stuarthaddox2585
@stuarthaddox2585 6 жыл бұрын
I love this channel
@HoorGuvLabs
@HoorGuvLabs 2 жыл бұрын
Man's replaying to comments 10 years later
@h7opolo
@h7opolo Жыл бұрын
12 years later, too.
@RimstarOrg
@RimstarOrg 12 жыл бұрын
@JeanAlex23 Glad to hear it, thanks.
@RimstarOrg
@RimstarOrg 12 жыл бұрын
Oh good. I wasn't sure I'd understood your question correctly. Thanks for letting me know.
@turtledove7411
@turtledove7411 12 жыл бұрын
hey what did you use for your metal dome for your VdG? please reply, because i need an energy source for a project. HELP!!1
@qewsadrtf
@qewsadrtf 11 жыл бұрын
A really great video :)
@RimstarOrg
@RimstarOrg 11 жыл бұрын
I don't have a video on that. Though if you look at my "How to make an electroscope" video it's the same thing that makes the leafs inside the jar spread apart. If the VDG dome is positively charged then the hair is also positively charged and since like charges repel each other, the hairs all repel, getting as far apart as they can. Similarly if the VDG is negative then the hair is negative and repels.
@RimstarOrg
@RimstarOrg 12 жыл бұрын
Thanks. And thanks for subing.
@RimstarOrg
@RimstarOrg 12 жыл бұрын
The motor has a power chord which is plugged into the wall socket to power the motor. That power chord has three wires: a black wire, a white wire, and a green wire called GROUND. That green ground wire goes through the wall socket and eventually to a metal rod in the ground in the backyard. That green ground wire is the one you see in the video at 2:04. The brush and the green ground wire are both connected to the metal case so they are connected together. Let me know if that doesn't help.
@RimstarOrg
@RimstarOrg 12 жыл бұрын
Yes. Air contains a number of different atoms. One I know for sure gets ionized negatively is oxygen, which can then attach to an O2 molecule to produce ozone (O3). I'm don't know offhand which ones get positively charged. I talked about atoms becoming ionized in the video but molecules (which are made up of multiple atoms) can also become charged.
@marry8294
@marry8294 2 жыл бұрын
Can I ask you what is the meaning of negative voltage? What is the difference from positive voltage in terms of work and energy?
@leviterande
@leviterande 11 жыл бұрын
Thanx,by the sharper surface I presume you mean just smaller in diameter??? anyway the larger the dome the higher voltage it can hold before electrci breakdown occurs. Good so far. So what about the electric field "around" the larger dome? say we got 79kv on the both of your domes. which dome has the strongest electric field and which one reppels the most air molecules around it? thanx a lot
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