this post was submitted on 12 Mar 2024
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Science Memes

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[–] kowcop@aussie.zone 130 points 1 year ago (3 children)

When I was young my Dad bought me some mercury home from work.. I loved how it moved when I shook the bottle and the weight of it.

When I had my own kids I didn’t want it around, so our local council had set up a event where you could dispose of household liquids like old paints and solvents, so I took it down. When I drove up, the guy asked me what I was disposing of so I said mercury. It was bizarre. I was told to stay in the car and a guy came out of a shed in a full hazmat suit with one of those pairs of metal tongs to retrieve it from me.

I remember Dad telling me that miners used to collect gold pan tailings in mercury and then of a night they would hollow out a potato and put the mercury in, and then put that in the camp fire.. it would burn off the mercury and leave a little ingot of gold.

[–] Mycatiskai@lemmy.ca 20 points 1 year ago

Out in the edge of the lower mainland of BC by Hope, where there was a mini gold rush a long time ago you can find lots and lots of mercury sitting below the water levels when the streams dry out during the summer.

It is all left behind from the miners back in the day.

[–] ColeSloth@discuss.tchncs.de 7 points 1 year ago (4 children)

It's actually harmless if not ingested. They were being weird.

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[–] XTL@sopuli.xyz 5 points 1 year ago

We also had an innocent looking little (maybe 100ml or 200) bottle of mercury at school. Mostly for the startling weight when it was passed around to demonstrate density.

[–] spittingimage@lemmy.world 102 points 1 year ago (6 children)

Nine out of ten hatters recommend that you don't do this. The tenth hatter purple monkey dishwasher.

(Victorian-era hat makers were notorious for going mad because they used mercury to treat felt cloth.)

[–] Akasazh@feddit.nl 24 points 1 year ago (1 children)

I wondered what the Mercury actually did with the felt, as I couldn't think of anything from the top of my hat:

Mercury made the felting process in hat production more efficient. The compound used to moisten the fibers was Mercury Nitrate, a process known as carroting. It produced a superior-quality felt, which in turn, resulted in higher-quality hats

[–] JohnEdwa@sopuli.xyz 9 points 1 year ago* (last edited 1 year ago) (1 children)

Mercury Nitrate

Which, should be noted, is not the mercury show in the picture. Mercuric nitrates are a white/yellow dry powder that is the result of mixing mercury with nitric acid. The process of making mercuric nitrates, and carroting itself, both result in rather toxic fumes that you really should not breathe in.

Handling liquid mercury is basically almost harmless as it absorbs through the skin really slowly and doesn't produce much vapours. Putting it in acid, heating it up, and putting the cloth treated with it in an oven is not.

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[–] overcast5348@lemmy.world 12 points 1 year ago (2 children)

Is this the origin story of The Mad Hatter? 🙄

[–] spittingimage@lemmy.world 7 points 1 year ago (1 children)

Could have been. I know Lewis Carroll liked to lampoon issues of the day in his writing.

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[–] troyunrau@lemmy.ca 11 points 1 year ago (2 children)

I wonder what secondary compounds this was creating. Elemental mercury is pretty much fine, but if it was reacting with other things to create wacky fun times...

[–] insufferableninja@lemdro.id 6 points 1 year ago

they chewed the leather to hides to soften them, IIRC. so it wasn't just getting on their hands, they were ingesting it.

I think it was mercury nitrate. Much more soluble.

[–] darkpanda@lemmy.ca 9 points 1 year ago

Sneaky Simpsons reference here for those who didn’t notice.

[–] Taniwha420@lemmy.world 6 points 1 year ago

I thought it was the vapours from using mercury inside that got them.

[–] Dasus@lemmy.world 5 points 1 year ago

It's so much harder believing in six impossible things before breakfast when you're allergic to quicksilver.

[–] Bishma@discuss.tchncs.de 69 points 1 year ago (1 children)

If anyone else was reminded of that video of a 110lb anvil floating in a tub of mercury, here you go. Don't try this at home.

[–] FuglyDuck@lemmy.world 26 points 1 year ago (2 children)

didn't they use to use shitloads of mercury for floating the lenses on a lighthouse, letting it turn without too much in the way of friction?

[–] Instigate@aussie.zone 26 points 1 year ago (1 children)

Anyone who’s studied high school physics will also remember one of the biggest blunders of modern experimental physics: the Michelson-Morley Experiment which infamously attempted to prove the existence of the aether but rather gave them a pretty clear confirmation of a lack of the aether. It actually ended up helping form one of the basic tenets of Einstein’s Special Relativity, which is that the speed of light is constant within an inertial frame of reference.

They floated their interferometer setup on a sandstone slab measuring 1.5m x 1.5m x 0.3m in a giant circular trough of mercury in order to provide near-zero friction and reduce vibrations.

https://en.wikipedia.org/wiki/Michelson%E2%80%93Morley_experiment

[–] TIMMAY@lemmy.world 15 points 1 year ago

Not only is this technique still used to insulate large optical devices such as telescopes but liquid mercury is even spun around to create mirrors for telescopes: https://en.m.wikipedia.org/wiki/Liquid-mirror_telescope

[–] Bishma@discuss.tchncs.de 8 points 1 year ago

That's right, I often forget about that.

[–] Bsher8365@lemmy.world 52 points 1 year ago (1 children)
[–] Lucidlethargy@sh.itjust.works 12 points 1 year ago (1 children)

Is, uhh... Is he floatin' on a pool of mercury?

[–] Bsher8365@lemmy.world 11 points 1 year ago (1 children)

That he is. Looks like fun, right?

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[–] sharkfucker420@lemmy.ml 48 points 1 year ago (1 children)

Pure mercury metal is pretty chill, just done fuck with organic mercury compounds

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[–] Frogodendron@beehaw.org 28 points 1 year ago

Metallic elemental mercury (what you see in the picture) is relatively harmless to touch. Arguably, it’s more dangerous to rub a lead ingot, for example. However, mercury vapours (and mercury does evaporate slowly but consistently) absorb quite easily when you breath them with a ton of undesirable effects, often related to central nervous system, which is never a nice thing. Broken mercury thermometer won’t kill you. Playing with the puddle inside a non-ventilated room might kill you in several decades. Working in the non-open-air environment where mercury is always present will slowly worsen your health as mercury accumulates.

Organic compounds of mercury are what actually is nasty. A short contact with a few millilitres of that — and you will have to recover for a long-long time, if ever. However, the scary stories about methylmercury rarely mention that there are other organic compounds that are just as toxic or worse. I wouldn’t get close to any organic cadmium compound, for example, and would be extremely wary of its inorganic salts too. The thing is it’s extremely unlikely that you encounter any of these chemicals ever in your life, and if you do encounter them, then you are likely a professional who knows exactly how and why you are to deal with them.

[–] sudoreboot@slrpnk.net 14 points 1 year ago

Is no one going to comment on the font rendering

[–] nieceandtows@programming.dev 13 points 1 year ago (1 children)

I've played with mercury when I was a kid. Hopefully it doesn't come back to bite me in the ass when I'm old.

[–] Kolanaki@yiffit.net 16 points 1 year ago (1 children)

Both my parents have told me playing with mercury like this was pretty common when they were kids. One's still alive. 🤷🏻‍♂️

[–] user224@lemmy.sdf.org 9 points 1 year ago (2 children)

My aunt even drank some and nothing happened.

Metallic mercury should be fine. Not the fumes though.

[–] AnUnusualRelic@lemmy.world 7 points 1 year ago* (last edited 1 year ago)

It was commonly used as medicine for quite some time.

It didn't work, but then nothing much did at the time.

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[–] Isoprenoid@programming.dev 8 points 1 year ago

Photo: Robert W. Madden

Oh, he be Madden alright.

[–] Pat_Riot@lemmy.today 6 points 1 year ago

Dads old mercury filled carburetor sinch worked much better than the oil filled one ever did.

[–] then_three_more@lemmy.world 5 points 1 year ago

I hear it's good for the French Disease.

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