Thanks for sharing, I love it when people share their failings/mistakes rather than a polished make it look easy video which makes you feel it's an advert or incapable. We all get to learn more by sharing our mistakes.
Trick I learned from my chemistry teacher: To prevent from splurging all over the place while pouring from large canisters like this one, keep the opening to the left/right (so not being the lowest point). This way the liquid (going out) and the air (going in) don't mix.
Fun project :) There are two types of enameled bell wire, ones you can simply solder to and the heat of the iron removes the coating, or ones you need to sand. Oddly I have come across wire finer than #40 that needs to be sanded (insane I know) but along with buying the wire please advise get the wire that can simply be soldered SO much simpler to use. The other way to secure a wire would be with nail polish which is my preferred means as I don't glue my fingers together and it can be de-bonded easy with nail polish remover (so long as that remover doesn't attack the plastic of your former). Also mineral oil comes in different weights, usually people will find "light" and "heavy". Filings also come in sizes too :) I would have put a 1/2 inch or so riser pin under the coils to lift them up, maybe center the coils in the globe overall.
7:58 - There is also ~0.65V drop between base and emitter of a BJT so the voltage drop across R4 is Vzd - 0.65. Which can make a significant difference.
If you use the female header as a holder when soldering the wires onto the male header, even if the plastic melts a bit, the pins stay correctly positioned.
Not gonna lie, I was excited to see the ferromagnetic particles clinging to the electric magnet along the magnetic field lines and the result was kind of a bummer. But failing is an important part of engineering and here are some suggestions for a rev.2 of this demo build: 1) Ideally the liquid should have a very high viscosity that the ferromagnetic particles need much more time to sink to the bottom after being distributed through the globe by shaking it up. Think some liquid like honey with some distilled water. 2) Get some beefy lab power supply of the switching variety to be able to experiment with different current values without using up time to build different current drivers. 3) You'll probably need at least a couple amps to affect ferromagnetic particles in that kind of distance without a core so I agree that you need coils that can handle much more current.
For v.2: Heat the header pins and push them thru the base, so you can solder the coil wires inside the globe. Heating a header may damage it's plastic, so be prepared to use one to make the holes, and another for the actual wiring.
For testing out different types / combinations of powders and fluids, you could try with a permanent magnet inside first. Then when you find something that works, switch to the coils.
Wouldn't it be cool if you used two perpendicular sets of Helmholtz coils and drove each pair with with parametric sinusoidal waveforms to suspend them in any Lissajous pattern? For example: If 1) x=R sin(t) and 2) y=R cos(t) then, adding would give (x^2) + (y^2) = R^2 [cos(t)] ^2 + R^2 [sin(t)]^2 and since sin squared + cos squared =1, you get: x^2 +y^2 = R^2 which would be a suspended circle of radius R. If the frequency's and phase's are variable and the field is strong enough, you may manage all sorts of slowly rotating Lissajous figures...it would be awesome!. Thanks for the video!!! --dALe
Maybe v2 has ferro fluid. To see if that works in the mineral oil. And of course a switch and maybe a fun colored led or two. Along with your heat protection.
Dope make coils concentric with globe tho (suspend in the middle using like a straw) alto another insulating piece of the coil, and use the ferrite nanoparticles you would buy if making Ferro fluid
I need help... can a helmholtz coil be small but still generate enough energy to replicate the Earths magnetic field? And can a standard house wall outlet give enough electrical current to provide enough energy to produce a magnetic field?
I hand wind inductors and transformers for work. Then I watch people wind inductors for fun... what is life? My tendons will scream in protest but I really want to try this.
Add chicken. lol. just a contribution. When you pour liquid from a container do not have the spout at the bottom. Have your spout at the top. This way it doesn't want to suck air in as it is pouring. love your channel subbed.
Kind of confused with the theory behind this. Heimholtz coils are used to cancel earth magnetic field not gravity force. When magnetic field is zero only gravity will force shavings down. To keep them suspended nonzero magnetic field is needed.
Super Glue (Cyanoacrylate) TIP/Trick: Sprinkle a little sodium bicarbonate (baking soda) on the super glue and it will cure instantly. Be certain that the two parts you are joining have adequate glue applied and are position/aligned just right because once you sprinkle on the sodium bicarbonate it’s difficult, if even possible, to go back.
@@Workshopshed Indeed there are. I have two different brands of accelerant but rarely use them because the fumes and residues bother me, personal preference. Baking soda also absorbs odors rather than produce them and has more predictable chemical reactions in cases where a glued item will be submerged in a liquid. Gives me an idea drop some baking soda-cured cyanoacrylate into vinegar to see if the carbon dioxide release happens.
Well, that was... unsatisfactory. Could have shown the nail paint after the magnets were active, maybe there would be some action in the clouds. Could have tried ground neodymium magnet (not hard to break apart), ... or at least show some higher current experiments... maybe the oil would be enough to cool down the wires for much higher current? Hope for more experimentation in pt. 2, if there will be one. Btw. if you want to do tidy and easy wrapping of a wire around a pin, there are wire-wrapping tools designed for it (used a lot in the past for prototyping).
Thanks for sharing, I love it when people share their failings/mistakes rather than a polished make it look easy video which makes you feel it's an advert or incapable. We all get to learn more by sharing our mistakes.
Trick I learned from my chemistry teacher: To prevent from splurging all over the place while pouring from large canisters like this one, keep the opening to the left/right (so not being the lowest point). This way the liquid (going out) and the air (going in) don't mix.
That image quality looks even better than James's! will watch later but happy to see you here :)
You've earned a like just for the fantastic idea to display/visualize a magnetic field. I definitely want to see a V2!
What a great concept! Can't wait to see a possible rev. 2 or whatever you're working on next.
Fun project :) There are two types of enameled bell wire, ones you can simply solder to and the heat of the iron removes the coating, or ones you need to sand. Oddly I have come across wire finer than #40 that needs to be sanded (insane I know) but along with buying the wire please advise get the wire that can simply be soldered SO much simpler to use. The other way to secure a wire would be with nail polish which is my preferred means as I don't glue my fingers together and it can be de-bonded easy with nail polish remover (so long as that remover doesn't attack the plastic of your former). Also mineral oil comes in different weights, usually people will find "light" and "heavy". Filings also come in sizes too :) I would have put a 1/2 inch or so riser pin under the coils to lift them up, maybe center the coils in the globe overall.
All great suggestions! Thank you!!
7:58 - There is also ~0.65V drop between base and emitter of a BJT so the voltage drop across R4 is Vzd - 0.65. Which can make a significant difference.
The liquid and the shavings need to have the same density so that the shavings float.
Good job. Looking forward to V2
Would definitely be interested in seeing the follow up to this project.
If you use the female header as a holder when soldering the wires onto the male header, even if the plastic melts a bit, the pins stay correctly positioned.
Never trust an engineer who doesn't have cats.
Certainly seems to be a trend here...
Feline supervision is a must. 😂
That was soooo cool!
I like the idea, please do some development work and return with an improved version, would be great to see. 👍
Not gonna lie, I was excited to see the ferromagnetic particles clinging to the electric magnet along the magnetic field lines and the result was kind of a bummer. But failing is an important part of engineering and here are some suggestions for a rev.2 of this demo build:
1) Ideally the liquid should have a very high viscosity that the ferromagnetic particles need much more time to sink to the bottom after being distributed through the globe by shaking it up. Think some liquid like honey with some distilled water.
2) Get some beefy lab power supply of the switching variety to be able to experiment with different current values without using up time to build different current drivers.
3) You'll probably need at least a couple amps to affect ferromagnetic particles in that kind of distance without a core so I agree that you need coils that can handle much more current.
I love your work 😍
Hey Whitney, great proof of concept, perhaps pulsing the coils will give a stronger effect?
For v.2: Heat the header pins and push them thru the base, so you can solder the coil wires inside the globe. Heating a header may damage it's plastic, so be prepared to use one to make the holes, and another for the actual wiring.
What was the field strength of your magnets that you used? And by magnets I mean coils of course
For testing out different types / combinations of powders and fluids, you could try with a permanent magnet inside first. Then when you find something that works, switch to the coils.
Conformal coating would work nicely for holding the wire in place and sealing the holes in the bottom for the wires.
Why the current source? Seems a resistor would do the trick! So what if the current varies a bit with battery voltage? Rev2 can be a switcher...
It's such a shame that the gold didn't work out as that would have looked amazing!
Great concept though, and I'm looking forward to V2!
Check out Ernshaws theorem for why you didn’t have suspended particles.
Wouldn't it be cool if you used two perpendicular sets of Helmholtz coils and drove each pair with with parametric sinusoidal waveforms to suspend them in any Lissajous pattern?
For example: If
1) x=R sin(t) and
2) y=R cos(t)
then, adding would give (x^2) + (y^2) = R^2 [cos(t)] ^2 + R^2 [sin(t)]^2
and since sin squared + cos squared =1, you get:
x^2 +y^2 = R^2 which would be a suspended circle of radius R.
If the frequency's and phase's are variable and the field is strong enough, you may manage all sorts of slowly rotating Lissajous figures...it would be awesome!.
Thanks for the video!!!
--dALe
Having an idea is only the beginning
Maybe v2 has ferro fluid. To see if that works in the mineral oil. And of course a switch and maybe a fun colored led or two. Along with your heat protection.
Non emulsion ferro fluid is a great idea!
Why is the hot air iron the wrong way around in the holder???
Dope make coils concentric with globe tho (suspend in the middle using like a straw) alto another insulating piece of the coil, and use the ferrite nanoparticles you would buy if making Ferro fluid
I need help... can a helmholtz coil be small but still generate enough energy to replicate the Earths magnetic field? And can a standard house wall outlet give enough electrical current to provide enough energy to produce a magnetic field?
Since the coil is submerged in oil, you can put a lot more current through the fine wire.
Such a creative idea, needs some work in practice I agree, but damn, very cool idea.
I hand wind inductors and transformers for work. Then I watch people wind inductors for fun... what is life? My tendons will scream in protest but I really want to try this.
That part definitely took longer as was more painful on the hands than I was expecting!
@@knitronics Some vitamins, rum, and a few weeks of doing nothing with my fingers is all I need to recover. 😉
The nail powder looks like it would make great rheoscopic fluid for a Kalliroscope.
Very interesting project. I'm looking forward to seeing version 2. I did feel like one thing was missing in this video though 🐔.
Add chicken. lol. just a contribution. When you pour liquid from a container do not have the spout at the bottom. Have your spout at the top. This way it doesn't want to suck air in as it is pouring. love your channel subbed.
Lets see a revised revision! this started and I thought "This could look good" ermm nope.
Where can I get an element14 presents T-Shirt
Kind of confused with the theory behind this. Heimholtz coils are used to cancel earth magnetic field not gravity force. When magnetic field is zero only gravity will force shavings down. To keep them suspended nonzero magnetic field is needed.
Why start the oil over? You could have removed some ferrite powder with a magnet.
Snow globe juice :)
Why use rework flux? Just use solder wire with a flux core.
Super Glue (Cyanoacrylate) TIP/Trick: Sprinkle a little sodium bicarbonate (baking soda) on the super glue and it will cure instantly. Be certain that the two parts you are joining have adequate glue applied and are position/aligned just right because once you sprinkle on the sodium bicarbonate it’s difficult, if even possible, to go back.
There are also commercial accelerants you can buy
@@Workshopshed Indeed there are. I have two different brands of accelerant but rarely use them because the fumes and residues bother me, personal preference. Baking soda also absorbs odors rather than produce them and has more predictable chemical reactions in cases where a glued item will be submerged in a liquid. Gives me an idea drop some baking soda-cured cyanoacrylate into vinegar to see if the carbon dioxide release happens.
Well, that was... unsatisfactory. Could have shown the nail paint after the magnets were active, maybe there would be some action in the clouds. Could have tried ground neodymium magnet (not hard to break apart), ... or at least show some higher current experiments... maybe the oil would be enough to cool down the wires for much higher current? Hope for more experimentation in pt. 2, if there will be one. Btw. if you want to do tidy and easy wrapping of a wire around a pin, there are wire-wrapping tools designed for it (used a lot in the past for prototyping).
The oil will cool the wires quite a lot, that's why large transformers are immersed in oil.
There is no field maxima in free space, the iron went to the right place, according to its nature. Merry Christmas
Are you aware of the ferocell? My man theoria apophis talks about it.
use some magnetic shavings that are neutrally buoyant
DO a breadboard test first !! then order !! .. :(
Nice try! I hope you do a second attempt,
Don't use Bill Wurtz in vain