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Can you drive on mercury? (Patreon)

Published:
2018-06-13 21:51:34
Imported:
2021-10

Content

I'm not done with this video, I want to add some more discussion about what would happen if you drove a real car into a large lake of mercury. and possibly anything else you guy's think of. 

Files

driving on mercury 1

Video is unfinished but all the mercury clips are there. 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

Slightly unrelated, more of a vacuum chamber question, but can you test setting concrete in a vacuum?

Nathaniel Nifong

Great idea! I think it would be also interesting to try to answer the question of "if you were on a planet covered in liquid mercury, what kind of vehicle would you use?" Of course a boat would be a good start, but maybe one could take advantage of the conductivity of mercury to make a silent, solid-state truster for a boat! For example, maybe by generating current in the Mercury between eletrical contacts on the hull of the boat, you produce a magnetic field that repels a permanent magnet inside. Maybe something here might float your boat. <a href="https://patents.google.com/patent/US8221089" rel="nofollow noopener" target="_blank">https://patents.google.com/patent/US8221089</a>

Anonymous

Try putting a fin on the back for steering, like a boat I guess.

Anonymous

Add a thin layer of sand on top and then you’ll have a solid ground that also flows might be interesting

Anonymous

Of course the demo is for a plastic RC 4x4, but maybe comment on the result of an actual 4x4 doing the same? It'd float, but how high would the 'water' (mercury) line be?

Anonymous

If there were a large lake of mercury and someone attempted to drive over it, how would the mercury affect the materials that make up the car? Would the mercury affect my aluminum frame? Will the chrome plating on my hubcaps get stripped off? The gold on Cody's bumper?

Anonymous

Really cool to see this working! I'd be interested to see the car enter and exit the 'lake' on a ramp to see how it handles during the transition.

James W.
>>13066033

It is basically acting as a paddle-wheel boat, if you could make the wheel spin in opposite directions steering would be easy.

Anonymous

Can you try quenching red hot steel into mercury? Do you think it will cool down fater than water? Do you think you can cool down metals fast enough to make amorphous alloys?

Anonymous

This seems like the perfect job for a magnetohydrodynamic vehicle: Both incredibly high conduction and atomic mass for propulsion, together with a LOT of buoyancy... Would you be willing (we all know that you're able :)) to make a small mockup and test it's performance? (I'm thinking one MHD thruster mounted on each side of the vessel should allow steering like tracks, although a simple rudder might be more effective.)

Brian Reddeman
>>13065888

I've done it before; what you end up with is a slightly more dense material but that was a 1:1 portland cement to sand ratio. Concrete is a wildly large number of things. You can add all kinda of things like silica fume, fly ash, silt, clay, diatomacious earth, gravel, sands, fibers (carbon, steel, copper, fiberglass, glass), glass beads, semi-precious stones, limestone, carbon, wood pulp, epoxies, soaps, resins, tar, asphalt, titanium dioxide, aerogels, perlite... Oh and entraining gases as well as setting/curing in various temperatures. :) What you might ask is what happens when you soak then freeze vacuum set Quickcrete versus the same concrete set in sea level atmosphere.

Brian Reddeman
>>13066315

My guess is that the mercury will rapidly invade the surface of the steel leaving it brittle. Neat experiment. I'll have to try that myself if Cody doesn't do it.

Brian Reddeman

Ok so you need to add a cringe "Wow! Driving on mercury" title and face with double thumbs up. I can see one problem with driving on mercury you didn't cover...how screwed you are if the planet hydrodynamics subsist of liquid mercury. :)

hey7328

could probably turn by skid steering

Anonymous
>>13066079

If the mercury line is approaches the radius of the wheels you'd lose the ability to 'paddle' which would be disappointing. Cody you need to test this again with a model that has an equivalent mass-to-contact-area ratio as a real car: if I decide to drive my 4x4 into a real lake of mercury and it doesn't drive I'm going to blame you!

CodysLab
>>13066557

Actually I think magnets stuck to an alkaline battery will spin when placed in mercury.

Dave Haldane

Maybe compare to an RC boat? Would an RC boat even work?

Anonymous

How difficult it cleaning the RC car afterwards? Do you have to check that the wasn't any mercury that went inside the plastic frame of the car or any places that I'm not thinking about?

Max Eliaser

Might be interesting to experiment with different tread patterns. Is the car actually getting traction on the surface tension or are the treads just acting like paddlewheel paddles? You could figure this out by trying a car with smooth tires.

Kadah

Is the car's weight to scale? That would be an interesting data point of adding additional mass to the car.

Kadah
>>13073097

The effect is slow but it may cause a problem some time later, likely many hours.

Anonymous

Oo! I love the 2nd high speed going forward Cody. That was awesome❣ I think it's because of the mercury splashing up behind the rear tires as the RC truck goes. Do you have the ability to change tires on this RC vehicle Cody? That would be a cool thing to test out since you're already messing around with the vehicle &amp; mercury. 😉

Anonymous

Adding a rudder should make steering really easy.

Anonymous

Also consider the high concentration of vapor coming from the lake (health issues), mercury's reactivity with a lot of other metals (quick corrosion/fusion leading to structure integrity loss)

Anonymous

Could you do the calculation on how well an actual truck would float on Mercury? Like, how big the wheels would need to be for a real car with passengers to stay afloat enough for this kind of propulsion

Alexander Thomas
>>13071615

The boat would need to be made very heavy for the propeller (or paddle or whatever) to stay submerged, otherwise it would just sit on top of the mercury as if it was sitting on dry land… I would like to see how well a propeller works in mercury though!

Anonymous

The front end of a front-engine vehicle might impair its ability to float properly as it's front-heavy. I wonder what is the likelihood of it flipping over if it were more top heavy. Also what impact if it were bottom heavy like a Tesla with the battery pack very close to the bottom of the car. I wonder how fast a vehicle could get before things start to 'go sideways'. What if there were a mercury waterfall in the way, and what if it was a significant waterfall, could it potentially crush the car? And how fast would a car sink if it started to bring on mercury?

Anonymous
>>13090646

Also what kind of lake is this? You'd have to ignore the possibility (or maybe not) that rocks and sand would float to the top. If for whatever reason your vehicle failed, would you be able to swim to the shore?

Anonymous

And how dark of sunglasses would you need to drive on it!?

Mark Trombley

Wouldn't you be poisoned by the mercury fumes? A jet propelled car might be a better option. Or maybe a tungsten submarine.

Anonymous

Now do it with a real car!

Anonymous

I wonder if this test could be done with a normal vehicle in a safe manner using oobleck as the medium? can you make the oobleck as dense as the mercury? im betting this would be a lot more cost efficient as well to try versus mercury lol cody, i hope you see this comment! i'd love to know your thoughts or see you try it! that would be siiiiiiiiick lol