@@KumaPaws376 He's talking out his arse. 5G wireless frequencies are higher than 4G not more powerful. They are so far from being powerful enough to give off corona discharge. Old AM/FM radio transmitters of many thousands of watts could potentially create a corona discharge aroun the antenna, but it is not a desirable outcome so the antenna, filters and amplifiers were designed to stop that from happening.
@@SWVVETHROWBACKS na na na "coronam" Is latin for crown And like a crown this family of bacteria has ends*(or receptor i don't know exact word) that is similar to it . That's why it is named that way
@@SWVVETHROWBACKS Also I am from India and we don't have so much "5G" Still 20k above are infected for now( :( ) Also what about Japan🇯🇵 Singapore🇸🇬 South Korea they had done great job without lockdown due to fast and great measures early.
I honestly think this is the best explanation of this phenomena on RU-vid. I would also have appreciated if you explained brush discharges a little bit
Thanks! Yes if you watch closely you can see some arcs around the brushes. I didn't get into exactly how the Wimshurst works, but the brushes a dragged over metal pads on the insulating plastic wheel. I suspect that if you run the wheel fast enough, the brushes charge up to an arcing potential in the time they spend moving between the metal pads. It probably also helps that the brushes are made of sharp wires, so it is easier for them to create an arc.
The Corona Discharge (and the opposite due to positive charge) were first described by Giambattista Beccaria in 1753. He called them "stelletta" (starlet) and "fiocco" (ribbon) respectively.
WOW what a fantastic professor! Keeps every minute interesting and keeps you focused with clean and clear drawings. Wish I had you as a prof during my college years or especially now in my electrical apprentice days. Great video!
As I was wondering what would happen if he puts his hand between the two electrodes You demonstrated that too! Thank you very much for your effort! And also what is the the difference between arc discharge and capacitor?
The Wimshurst is essentially a capacitor that you charge up. The two round electrodes are like the plates, but the capacitance is not high since they are not flat and not close together.
@@Prof-Hafner Great video! Could you explain why this is? You mentioned the system being discharged after each spark, so wouldn't each spark feel like the first as the system is being 'reset' every time? Also, aren't arc discharges incredibly hot (or is this wrong)? How does the same arc that turns air into plasma not burn your finger? Incredibly interesting topic... will definitely check out some newer videos :)
@@iceezander Thanks icezander. The sparks are all the same as you say, but your finger is numb after the first one! haha. Not entirely numb, but noticeably so. Yes, it is very hot, but it has a very small heat capacity since it is a gas. To burn you, something needs to be hot (to transfer energy) but also have a lot of energy to transfer. It is like why you can take a piece of tinfoil directly out of your oven without getting burned.
I was really stressed wid dis topic of corona discharge. Couldn't understand ANYTHING, even after reading for atleast 10 times ... But I just saw ur video ... Ur explanation was literally amazing sir ... Wish u were my professor...
As a complete layman it is videos like these that really spark (pun semi intended) my interest when it comes to physics. It really takes talent to pull that off. Thanks for the great explanation and demonstration! Fun to watch.
Thanks for this experiment. If you turn off the lights, the corona would be more visible before the arc discharge. But it's always difficult to capture on camera.
4:12 the concentration of corona discharge is based on the proximity of the other electrode, not "accumulation." without presence of another object, the charge accumulation is equalized on the spherical surface.
I've studied UHV my entire life and just had an Epiphany so very well put together video. Oh and this definitely deserved a like but i couldn't. It was at 420 8)
@@Prof-Hafner I actually have an Ozone generator at home to treat a particularly smelly room. Although I'm worried about the damage it might leave behind on plastics. I read comments that Ozone and Plastic interaction can cause material degradation. Maybe if you ever have time for it. A video on that topic would be well appreciated ✌
IMO the blue color is EM radiation which IMO is photons directly emanating from the fast moving electrons which are travelling in waves. Their blue light reflects off the plastic and metal. The arc discharge is white due to the frequencies coming off the other ions blending with each other.
next is how to quantify (magnetohydrodynamic formulas) this phenomenon for a non-purposeful & purposeful application i.e arc blast explosion & arc furnace steel production , the energy balance equations to produce the effects thnks for the wonderful instructional video
