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Magnet & battery on mercury (Patreon)

Published:
2018-06-14 21:55:26
Imported:
2021-10

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mercury mobile

Help me make videos by donating here: https://www.patreon.com/CodysLab Follow me on Facebook: https://www.facebook.com/codydonreeder SubReddit: https://www.reddit.com/r/codyslab/

Comments

Anonymous

I think you marked the positive contact (the tab that protrudes) as the negative pole around 2:53

Anonymous

That's what I thought. The nipple end is the +ve. But from memory, electrons flow from negative to positive

Anonymous

Well, that interesting. Mercury boncy with metal means it floats. How conductive in current and voltage is Mercury? Yes deflection of a electromagnetic pulse makes sense producing Small changes in em and velocity, etc. It is very interesting with Mercury and Pysics.

Anonymous

This is amazing. It's doing exactly what I was expecting. Very nice! This is basically how the first (and useless) electric motor was invented, isn't it? EDIT: And there you go talking about the world's first electric motor. I typed too quickly :D)

Anonymous

Your explanation is a bit confused when you try to explain why the electron is deflected the way it is. I think you should make clear that the electron is not deflected when it moves along the magnetic field, but when it's moving perpendicular to it, so next to the centre of the battery, where the magnetic field is curving back. Also, you say that the electrons go through the magnet. I don't believe that's true. The less resistive path for them would be to get into the mercury as soon as possible, which means going out through the sides of the magnets or even not into the magnets at all if possible. It doesn't matter where the electrons exit the battery magnet system actually, since it's not where the interesting stuff will happen. Finally, you are right when saying that the electrons go from negative to positive. And that's actually important for what you do. The vectors {electron speed, magnetic field, electron acceleration} form an orthonormal basis, which gives you the right direction for the electrons to be accelerated only if they are travelling this way.

Nathaniel Nifong

I wonder if a pool of plasma would also support such a device.

Anonymous

Seems strange that the mercury makes good electrical contact but doesn't wet the surface

Devin Forbes
>>13093822

because there are no adhesive forces so it doesn't stick around, and cause wetness. Similar to water on a hydrophobic surface. The water touches, but is repelled so no wetness is resulting from the interaction. But hey, what do I know.

Anonymous

Can it be done in other liquid metals that have low melting point? I'm wondering what would happen if you change the density of the metal, like gallium or potassium or cesium etc. Would the "magnettery" spin faster or spin and move as it does on mercury?

hey7328

seems like it's acting like a homopolar motor

Anonymous

Would that work with Gallium in a similar way? Also what about the Gallium alloy, Galinstan liquid Alloy, that you made a while back and throwing a magnet and battery combo in it? How does the different Mercury alloys change this phenomenon e.g. increasing/decreasing the rpm of it. Lastly is it the diamagnetism, conductivity, resistance, or a certain that is important to causing the magnet/battery to roll.

Anonymous

Perhaps try some more magnetohydrodynamics experiments. You have done heat pumps in the past. Perhaps try combining them. You could create a heat-pump with no solid moving parts. You would have to overcome turbulence and cavitation, maintaining laminar flow, to make it quiet and efficient. To make it efficient you will need to replace mercury with Na/K alloy (be very careful). See <a href="http://www.physics.smu.edu/scalise/P3374fa16/EinsteinSzilardRefrigerators.pdf" rel="nofollow noopener" target="_blank">http://www.physics.smu.edu/scalise/P3374fa16/EinsteinSzilardRefrigerators.pdf</a> for details.

Brian Reddeman

Uh oh Cody has unleashed a bazillion questions :)

Anonymous

Me: "You could make a rocket engine with that, I bet that would have a high specific impulse" Encylopedia Astronautix: Yep, tested in the 70s and 80s and yep 2500s to 6000s.

Jasper
>>13108255

You mean this <a href="http://www.astronautix.com/e/electricmercury.html" rel="nofollow noopener" target="_blank">http://www.astronautix.com/e/electricmercury.html</a> as a starting point.. I see the words "ion engine" a lot, i think they don't actually use liquid mercury at all. And 2500s is ~25km/s exhaust velocity if it were liquid, there is a liquid in there where some places it contacts electrically, and others.. the mercury is moving at that speed.. The heat generated by the viscosity would make it explode.

Anonymous

How about using a resister to limit the current (a delicate operation involving a lot of hot glue, I imagine) and attaching "paddles" to the magnets to watch the contraption slowly make its way across the surface?

Anonymous

All my brain thought when I first saw your magnet cruise across the mercury was "Wow! That's so cool. I love how beautiful the waves look!" Then I turned around and read all the super smart comments &amp; realize this is ~not~ my area of expertise. 😆 plants, kids, cooking... Wow, I sure missed out on a lot. 😁 Anyway, keep up the cool work Cody I love to see this stuff!

Anonymous

So can you show us what ways we can make money like in the gold video

Anonymous

Love you Cody, but I still think someday you will have some form of heavy metal poisoning name after you...

CodysLab
>>13509292

Humm there are a few that nobody has died from yet. Everything Einsteinium and up for instance.