William Fraser
William Fraser
  • Видео 135
  • Просмотров 2 216 918
Graphite levitation, magnets, laser and ultrasound
The experimentation continues. Diamagnetism appears to be more complicated than simple magnetic repulsion.
Laser projection through a drop of water containing suspended graphite.
Breaking graphite flakes with ultrasound.
Controlling graphite flakes with a rotating magnetic field.
Просмотров: 13 850

Видео

Graphite, Amps and Magnets
Просмотров 7924 месяца назад
Rheoscopic fluid MHD - Magnetohydrodynamics with suspended graphite flakes. Testing the effect of graphite on water conductivity.
Graphite and water - Now add magnets!
Просмотров 122 тыс.6 месяцев назад
A simple educational tool in fluid dynamics. Graphite flakes make a beautiful rheoscopic fluid. The flakes also react to a magnetic field, aligning with the field direction. Combine these two phenomena and you can produce interesting flow models and even streamlines around objects like cylinders and airfoils. Cylinders produce the well known Von Karman vortex patterns. Chapters: 0:40 Magnetic e...
New (?) idea for differential gears
Просмотров 2 тыс.7 месяцев назад
I demonstrate a 3D-printed model of a magnetic rear differential and explain how it works. I also show how magnets can be used to achieve limited slip and diff-lock capability. Also demonstrated is a magnetic diff with 60/40 torque split.
Magnetic Multistage Gear: Compound Differential
Просмотров 3 тыс.7 месяцев назад
An unusual multistage magnetic gear with 3D printed parts, Neodymium magnets and brushless motor. The reduction ratio is much higher than a typical series multistage gear with similar stage ratios. A speed and torque analysis reveals large amounts of power circulating back and forth between gear stages. The analysis shows that the use of Newton's 3rd law in magnetic free body diagrams differ fr...
Hull design for MHD boats
Просмотров 1,7 тыс.10 месяцев назад
A performance comparison between the Yamato 1 magnetohydrodynamic ship and other hulls.
Magnetohydrodynamic propulsion - external flux design
Просмотров 2,6 тыс.Год назад
A crash-course in momentum theory, forces and pressures in an MHD duct and a closer look at the magnetohydrodynamic propulsion of my model boat, "MHD 1.1".
A Tesla coil with only three components!
Просмотров 345 тыс.Год назад
A simplified version of the Slayer Exciter solid state Tesla coil using only a 10F supercapacitor, a 2N3904 npn transistor and an 85 turn coil. It requires an electromagnetic pulse to start resonating at very high frequency. The larger model uses a 2N2222 transistor.
Strange Magnetohydrodynamic propelled boat smashed speed expectations.
Просмотров 47 тыс.Год назад
A chubby radio controlled boat with counterintuitive design sets its sights on outperforming a slender research catamaran. MHD 1.1 specs: Length - 335mm Beam - 130mm Displacement - 950g. Efficiency - I'd rather not say. Catamaran specs: Length - 500mm Displacement - 915g More on the catamaran design can be found in the PLOS journal article "Experimental and theoretical study of magnetohydrodyna...
Magnetohydrodynamic drive - RC Model Boat
Просмотров 4,6 тыс.Год назад
RC model boat with external magnetohydrodynamic drive. Length: 335mm (1.1ft) Displacement: 950g 3s and 6s Lipo batteries. More detailed videos of the design and build will follow soon.
Kayak Trolling Motor Test - more airplane props
Просмотров 3,3 тыс.Год назад
The motor now mounts on the stern and can be lifted by tilting it forward. It steers with the rudder pedals. I demonstrated the kayak at a solar boat race. Scholars were provided with solar panels and trolling motors and had to build their own boats from extruded polystyrene. In the spirit of the event I limited myself to only the use of a buck converter, no battery and no MPPT. I tested two ne...
Converting RC Toy boat parts to high power magnetohydrodynamic drive.
Просмотров 6 тыс.2 года назад
Converting RC Toy boat parts to high power magnetohydrodynamic drive.
Watersnake 24V Brushless trolling motor, 95lb.
Просмотров 13 тыс.2 года назад
Watersnake 24V Brushless trolling motor, 95lb.
Minn Kota Project Ep.3: Skinny props Rule!
Просмотров 9 тыс.3 года назад
Minn Kota Project Ep.3: Skinny props Rule!
Super simple MHD boat drive, great results.
Просмотров 138 тыс.3 года назад
Super simple MHD boat drive, great results.
Minn Kota Project Ep.2. Modifications and range test
Просмотров 2,4 тыс.3 года назад
Minn Kota Project Ep.2. Modifications and range test
Minn Kota Project Ep.1: Speed and power test
Просмотров 3,2 тыс.3 года назад
Minn Kota Project Ep.1: Speed and power test
Electric Paddle: This tiny motor propels my kayak!
Просмотров 45 тыс.3 года назад
Electric Paddle: This tiny motor propels my kayak!
Cool solar panel hack - Tested.
Просмотров 2,4 тыс.3 года назад
Cool solar panel hack - Tested.
Solar panel motor test - Facing the sun vs flat
Просмотров 6153 года назад
Solar panel motor test - Facing the sun vs flat
Poly vs Mono: Small solar panel test and temperature response.
Просмотров 6263 года назад
Poly vs Mono: Small solar panel test and temperature response.
Model Aircraft propellers - UNDERWATER?
Просмотров 9 тыс.4 года назад
Model Aircraft propellers - UNDERWATER?
Joule thief circuit. Incredible voltage boost with vintage transistor.
Просмотров 21 тыс.4 года назад
Joule thief circuit. Incredible voltage boost with vintage transistor.
Joule Thief - Peltier powered Head Torch.
Просмотров 3,8 тыс.4 года назад
Joule Thief - Peltier powered Head Torch.
Borzoi puppy days
Просмотров 1,9 тыс.4 года назад
Borzoi puppy days
Cracking open a thermite egg.
Просмотров 7004 года назад
Cracking open a thermite egg.
Magnetic gears : Axial drivetrain proof of concept
Просмотров 310 тыс.4 года назад
Magnetic gears : Axial drivetrain proof of concept
Custom Mora knife handle
Просмотров 10 тыс.4 года назад
Custom Mora knife handle
DIY Solar Maximum Power Point Oscillator
Просмотров 2,1 тыс.4 года назад
DIY Solar Maximum Power Point Oscillator
DSLR video with a Six inch Telescope
Просмотров 2,7 тыс.4 года назад
DSLR video with a Six inch Telescope

Комментарии

  • @MixtapeSouljaPresents
    @MixtapeSouljaPresents 2 дня назад

    👍🏾

  • @RayleneCawood
    @RayleneCawood 7 дней назад

    Another thought: Why not put your electrodes OVER a broader magnet? that way the magnetic field is stronger/closer to the electric field and the2 are more perpendicular to each other with no backward field/ reverse thrust anywhere. Halbach Array..??? Also NB the scientific paper on the Chlorine-Hydrogen fuel cell. That means the gasses could be collected and turned back into electricity. That should add a bit of range/efficiency.

  • @deepadivakar-y4t
    @deepadivakar-y4t Месяц назад

    Pls use graphite I think they resist corrosion

  • @RayleneCawood
    @RayleneCawood Месяц назад

    He-he! :) I just noticed that you need to line your water trough up North-South to get the boat to go straight for testing...

  • @RayleneCawood
    @RayleneCawood Месяц назад

    How cold one capture and use the H2 produced..? I'm seeing a kind of hydrodynamic shaped hood (just in case) that hangs over the Cathode just above the water and a vacuum pump to suck it up, but unless there's a low pressure mini fuel cell... The Yamato 1 guys coulda just put a hood behind, vacuumed by the genset intake. I don't know how you'd clean up the exhaust though. Hmmm...

  • @nevillecawood3727
    @nevillecawood3727 Месяц назад

    Another thought: If you want to add sails what about a magnetic keel? I'm thinking north in front with its own electrodes and south at the back with a second (distant) set of swapped electrodes??

  • @nevillecawood3727
    @nevillecawood3727 Месяц назад

    Great work on all your MHD stuff! I'm wondering what effect Hydrophobic and hydrophilic coatings might have on the electrodes and magnets..? Could a hydrophobic coating on the electrodes still allow current flow, but protect the electrodes from corrosion..? Hydrophilic on the magnet..? visa-versa, etc-etc..? Then the hull effects: Hydrophobic leading and hydrophilic trailing ..? etc Studies show philic giving better results, (less turbulent) but a phobic front wasn't tried. Off the shelf Hydrophobic coating: NeverWet superhydrophobic

  • @Spiegelradtransformation
    @Spiegelradtransformation Месяц назад

    Do you know your Fail today ?

  • @CJP_Productions
    @CJP_Productions Месяц назад

    Bro sounds like my step dad with that deep ahh voice (no offense)

  • @steve.wonder817
    @steve.wonder817 Месяц назад

    I have a theory but I need liquid nitrogen. I called local university chemistry department and they shut me down. Hint: superconductor + double or triple insulated thin puck unpressurized + liquid nitrogen = efficiency😊

  • @Abdullah-mo1yo
    @Abdullah-mo1yo 2 месяца назад

    Hi William, Could you please share the building plan with us? I'm trying to reconstruct it, but I'm having trouble fitting it onto a single sheet of 3mm plywood.

  • @kenmacdonald9064
    @kenmacdonald9064 2 месяца назад

    We had a Flipper Scow at our cottage. Really fast sailboat with a large sail area. They were manufactured at a small factory in the NW part of Toronto. As a kid, I remember visiting the factory and being itchy from the fiberglass fibres afterward.

  • @joewoodchuck3824
    @joewoodchuck3824 2 месяца назад

    Cool, but we need details of the hidden mechanicals.

    • @williamfraser
      @williamfraser 2 месяца назад

      @@joewoodchuck3824 internal parts are visible in another video, "Brushless motor dyno".

  • @sudharshanachakram4423
    @sudharshanachakram4423 2 месяца назад

    Diamagnatic are magnate only? Pls reply me sir

  • @stefanguiton
    @stefanguiton 2 месяца назад

    Excellent

  • @PureAwareness76
    @PureAwareness76 2 месяца назад

    🎉 Love these, thank you! ❤ I have an 500 f8 3M5A old Soviet cat lens. Little bit soft, but I used to "treat" pix with Topaz AI (Sharpen, Denoise & Upscale).

  • @insight8226
    @insight8226 3 месяца назад

    Fantastic !

  • @ppepke70
    @ppepke70 3 месяца назад

    I'm guessing like a paper jet 14 but a bit slower.

  • @overunityinventor
    @overunityinventor 3 месяца назад

    Now that you have connected the caps or load in parallel with coil output, does the joule theif still draw more current from source to compensate for the losses incurred in voltage boost up process?

    • @williamfraser
      @williamfraser 3 месяца назад

      I never measured the current but it would be worth checking to compare efficiency.

  • @overunityinventor
    @overunityinventor 3 месяца назад

    i think u went into my head and stole my idea. i am planning to build exactly the same with just one change, instead peltier module, I'd conmect a small photovoltaic (solar panel) and amplify the voltage to 100 to 200 times. And just like you, I'll also connect the load in parallel to the coil so it wont draw extra current from the source. btw u earned a new subscriber today! thanks for posting such an esoteric knowledge for educating inventors.

  • @patrickbuechel2599
    @patrickbuechel2599 3 месяца назад

    😮thank you for an excellent presentation,,,I'm going to apply what I have learned today and try to develop a full scale boat, a shallow draft narrow beam flat bottom boat or a small pontoon paddle boat. Very well done👍👌🖖❤❤❤❤❤

  • @jimtroyer1804
    @jimtroyer1804 3 месяца назад

    I calculate less than a ¼ mile per hour. Hull speed on my 36' sailboat is 7 knts

  • @leslieviljoen
    @leslieviljoen 3 месяца назад

    Can you explain what's happening here?

    • @williamfraser
      @williamfraser 3 месяца назад

      I am still working on it, but the key is that the initial pressure distribution looks very different from the fully developed distribution. It will be the topic for the next video.

  • @tessasinclair6315
    @tessasinclair6315 3 месяца назад

    When all things come together ❣️

  • @bialy100k
    @bialy100k 3 месяца назад

    Try to use light underneath - as you old some streams are "perpendicular it should be partially visible (even without mica flakes in this case).

    • @williamfraser
      @williamfraser 3 месяца назад

      @@bialy100k if I let a layer of graphite settle on the bottom of a clear container and place it on a magnet, the magnet becomes visible.

  • @mikeolsze6776
    @mikeolsze6776 3 месяца назад

    I am impressed, but am now wondering how a powdered & flaked bismuth would respond in water, being subjected to a stationary magnetic field & a rotating magnetic field. 😮

  • @sobreaver
    @sobreaver 3 месяца назад

    Anything to do with that with a circular circuit and some induction ?

  • @erichred2858
    @erichred2858 3 месяца назад

    Ignore gravity, wipe it from the equation! We mislabeled buoyancy for a big psy op...

  • @WorksopGimp
    @WorksopGimp 3 месяца назад

    Subed love magnets fascinating, the universe is electric

  • @ragegauge7313
    @ragegauge7313 3 месяца назад

    I say you make one that you lay down in, thus maximizing the upper surface area and allowing you to completely cover the top of the vessel with panels

  • @benmcreynolds8581
    @benmcreynolds8581 3 месяца назад

    This channel is such a hidden gem. There are so many BS videos out there when it comes to magnets. As soon as I saw your DIY Liquid Graphite that Let's you see the Flow behavior.. Turbulent flow, lamaner flow, vortex's, etc. It really was a genius design and I really hope we see a lot more of any future experiments that you end up doing.

  • @SDelduwath
    @SDelduwath 3 месяца назад

    Current carriers are in the fluid itself which is moving orthogonal to the electric field... So presumably lorentz force applied is going to end up being rotated (about B axis)at some angle relative to the avg flow direction resulting in something roughly like a cos(k*v) relative efficiency. Anyways just a hypothesis

  • @SumNumber
    @SumNumber 3 месяца назад

    The rule of rotation seems to be on everything that is. Everything that is, is rotating on some level. Rotation is well known in Atoms. There is a secret woven into rotation and I think we are on the cusp of discovering it. :O)

  • @Vibe77Guy
    @Vibe77Guy 3 месяца назад

    You can make very small metalic particles to test with using sodium chloride brine electrolysis. The nacient reaction is removing materials, supposedly one ion reaction at a time. I don't have a microscope to measure particle size but they seep through a 5 micron filter media. You can do this with any metal that reacts with chlorine, but the chlorine is not released, but rather snatched back by the sodium ion it was 'borrowed' from. Leaving the metalic substance free to settle out of the brine electrolyte. You could play with the diamagnetic properties of copper, gold, and other such metals.

  • @glasslinger
    @glasslinger 3 месяца назад

    The floating graphite rod seems to violate a certain magnetic law pertaining to static fields used for support.

    • @glasslinger
      @glasslinger 3 месяца назад

      Found it: Earnshaw's theorem.

  • @michaelgolfetto9619
    @michaelgolfetto9619 3 месяца назад

    There's a significant difference in clay content between B and 2B grade

    • @jean-clauderainville677
      @jean-clauderainville677 3 месяца назад

      Indeed and I'm curious to see what type of clay was used in those leads, that could very well explain the behavior...

  • @nickharrow2429
    @nickharrow2429 3 месяца назад

    Can you try with a ring magnet? Spinning and stationary.

  • @bobrobertsNotUrBob
    @bobrobertsNotUrBob 3 месяца назад

    I got a bag of 1kg graphite powder from pinetown, it is the finest powder I have ever played with and it got into everything. I have lasers, ultrasonic humidifier and loads of magnets...next time I am brave enough to open that bag of graphite I will do some playing around

    • @williamfraser
      @williamfraser 3 месяца назад

      @@bobrobertsNotUrBob please share your results when you do, I'd love to compare.

    • @Patrik6920
      @Patrik6920 3 месяца назад

      ...just be very carfull, to not inhale it, be sure to use a particle mask.. ..stone dust lung isent a very pleasnt way to win the darwin award... please look up 'the-dangers-of-stone-dust' (applies to fine dust of most materials) can not post a link here... and be carfull..

    • @bobrobertsNotUrBob
      @bobrobertsNotUrBob 3 месяца назад

      @@Patrik6920 yes 100%, I was mixing it with paint.

    • @jean-clauderainville677
      @jean-clauderainville677 3 месяца назад

      Yes please share when you test it. Since graphite powder is very close to pure graphite (it may contain fractions of a percent of other minerals) we'll be able to compare the behavior of your powder with the one on the video and with pencil leads that are actually a baked clay/graphite composite that have a much higher percentage of "unknowns" in its composition. Looking forward to your results... 👍

  • @firstmaster100
    @firstmaster100 3 месяца назад

    It is a pity that the end of the magnetic assembly with a levitating graphite rod is in the shadow, which does not allow you to see what magnets it is assembled from. There is also an open question regarding the orientation of their poles.

    • @williamfraser
      @williamfraser 3 месяца назад

      20x10x5, alternating polarities across and lengthwise, like colours on a chessboard. The small magnets help to focus the field but are not essential.

  • @vortextube
    @vortextube 3 месяца назад

    Great video. It’s presented so clearly. Loved it.

  • @patrickday4206
    @patrickday4206 3 месяца назад

    I didn’t know graphite had magnetic properties?? Nice video

  • @K5WEO_WRJZ673
    @K5WEO_WRJZ673 3 месяца назад

    Are you breaking down the science behind an etchascetch?

  • @celebratedrazorworks
    @celebratedrazorworks 3 месяца назад

    🦋☠️🦋

  • @spadeespada9432
    @spadeespada9432 3 месяца назад

    The "pencil leads" aren't the same, one is 2b the other b. The five most common grades of hardness in pencil lead: 2B, B, HB, H and 2H and they run in that order, with 2B being the darkest imprint, HB being the middle of the road (used in just about every school in the world) and 2H giving you the lightest imprint of the five grades. A European grading system has been developed. The European system combines letters and numbers to represent each grade. This starts from the lightest H grades containing higher clay content, all the way to F, HB, and the darkest B shades. The difference in hardness (line weight and color) is a function the chemistry used to get desired hardness or softness, that's the source of the one being attracted vs the other not.

    • @williamfraser
      @williamfraser 3 месяца назад

      Yes the softer leads apparently have a higher ratio of graphite to binder. I thought it might levitate higher but could not see any obvious difference. Aside from one other make of lead (Pentel) all others were noticeably more magnetic and did not levitate at all.

    • @spadeespada9432
      @spadeespada9432 3 месяца назад

      @@williamfraser Pentel looks like they use synthetics as binders vs the others using natural ones.

  • @ScientificLee
    @ScientificLee 3 месяца назад

    nice.

  • @Sir-Dexter
    @Sir-Dexter 3 месяца назад

    nice

  • @justtinkering6713
    @justtinkering6713 3 месяца назад

    No corona?

    • @williamfraser
      @williamfraser 3 месяца назад

      @@justtinkering6713 good question. I assume it is there, just too faint to see. The larger coil used at the end of the video makes a tiny blue spark at higher voltages.

  • @merkabaenergy9558
    @merkabaenergy9558 3 месяца назад

    Great video again, thank you 😀, I was wondering if your ultrasound with soap method could be used as part of a process to 'purify' your graphene powder, if you were to hold a magnet next to the container attracting the particles (post ultrasound) that will to the magnet and then emptying the container 🤔

    • @williamfraser
      @williamfraser 3 месяца назад

      @@merkabaenergy9558 I haven't tried it post-ultrasound but otherwise it works just fine. If the container wall is thin enough the magnetic flakes will clump together over the magnet and you can slowly "drag" them away.

  • @ElvisMoraes
    @ElvisMoraes 3 месяца назад

    You can share a link of you t ring adaptor? Thanks

  • @vaakdemandante8772
    @vaakdemandante8772 3 месяца назад

    putting to shame most academic labs dealing with magnetism - sure, it's crude and lacks solid theoretical backing but it's exploratory and far beyond what is taught to the public