Effect of electric field on a candle flame ( ionic wind )
A few of our students are now working on corona discharges and ionic wind. Luutzen wants to sample viruses from air using corona discharges. Peter and Immanual are BSc students and want to create an improved ionic propulsion system and Zhifeng is going to model corona discharges and ionic wind at high frequencies. I decided to demonstrate ionic wind using the famous experiment of candle flame in an electric field. My anemometer was not suitable to measure the speed of ionic wind created, so i decided to cut a paper piece and make a basic wind detector, forgetting the fact that paper will be attracted to the charged electrodes. At first when i saw paper was attracting to the electrodes, I was surprised that what a wind force. Later i did the experiment from behind the electrode and saw that the paper again attracted to the electrode but not fully. I realized my mistake and figured out how to explain it so to make sense.
Life is so busy these days and i want to finish all task of 2022 before the end of the year. Wish me luck.
Finance: N=66
subs=2439
Available budget (N): 2439-100-66*(66+1)=-2083
Storage limit: 2^ln(2439)=222,75
Пікірлер: 14
Burning incense sticks is an easy way to show delicate movement of air at home. Smoke will move with the ionic wind.
@HVE
Жыл бұрын
Thanks for the suggestion, I will try it
@josidasilva5515
Жыл бұрын
@@HVE Replace the candle with sprayed (atomized) water; place the candle above to burn the hydrogen and oxygen extracted and verify the experiment.
@iljabuchmuller7889
Жыл бұрын
4:39 The smoke of the candle shows that there is ~0.1m/s wind from left to right in the room. ... just this wind is with power switched off, just do the same and switch power back on.
@HVE
Жыл бұрын
@@iljabuchmuller7889 Good observation.
In reference to your circuit, i plan on placing the transformer, resistor & the IRF3205 (with heat sink) in a small plastic container filled with mineral oil. The two leads from the transformer will protrude from the oil. I am trying to cool the components & reduce any possible arcing. I will 'try to remove' the ferrite material from the transformer & use different & random ferrite rods for experimentation. I plan on using magnets attached to an insulated rod & placed in different areas of the ferrite material. My two goals are to have an inexpensive & simple hi-voltage power source to power a small tesla coil. I wish your students & yourself success with your experiments.
@HVE
Жыл бұрын
Hi, thanks for the comment. At this voltage level it is not totally necessary to immerse things under oil (if something breaks it is a mess to replace it when it is under oil). I have used the same circuitry to drive a Tesla coil before (kzread.info/dash/bejne/nKeis9KjerWudaQ.html) However, notice that this circuitry is rather inefficient and is only good for short term tests because it is very simple circuitry. Good luck with your Tesla coil
@josidasilva5515
Жыл бұрын
Replace the candle with sprayed (atomized) water; place the candle above to burn the hydrogen and oxygen extracted and verify the experiment.
So wonder why there a candel
Very interesting experiment. I think it would be possible to determine the direction of the ion wind by using a thermal imaging camera to observe changes in regional heat. I am not sure. Hope you can handle all things well in 2022.😃
@HVE
Жыл бұрын
Yes, by thermal camera can be easily detected. but no money to buy a thermal camera now 😅
Replace the candle with sprayed (atomized) water; place the candle above to burn the hydrogen and oxygen extracted and verify the experiment.
I love the science but I'm concerned for the welfare of the rug. (Thanks grandma)
@HVE
Жыл бұрын
😅 This rug has gone through a hard life with me.