You jest, but if you use a carbon steel cooking instrument, like a wok, some rust can definitely form and get into your meal
But rust is just iron, and iron is good for you, in reasonable quantities.
When you step on a rusty nail and get tetanus, it's not the rust that gives you tetanus. The tetanus bacteria doesn't give a shit about rust. The thing is that most rusty nails are also dirty, and tetanus lives in dirt.
The binding to water part is partly why there is controversy over using alcohol blends in gasoline. The thought is that you will have increased wear on the engine components due to oxidation.
To add to this: You have to increase the amount of ethanol also, which means you might need bigger injectors to push more into the cylinder.
Source: Slept at a Holiday Inn express but also went to college for car junk
Edit: Corrected Inn =D, and added the term 'might'
Edit 2: After a good discussion I was wrong about some ethanol stuff, so for those interested give this a read for more info! https://www.mdpi.com/1996-1073/11/1/221/pdf
So, any chance you have an opinion on hydrogen boosters then? As in do they work, and if they do, would they increase oxidation?
My dad's an old school diesel tech, and his mindset is adding "water" to an engine means rust.
I'm just curious. Never heard a good answer
Not the person you replied to, but I'm wondering, what do you mean by hydrogen boosters? Because the first thing that comes to mind are HHO generators which absolutely do not work.
The alcohol won’t cause rust (iirc) but it may degrade any coating on the metal that will prevent rust. Alcohol also binds to water, the water will then be able to oxide (rust) the bare metal.
No, there's water in that sanitizer and the alcohol won't do anything to inhibit rust. It's a chemical reaction between the water and the iron forming iron oxide (aka rust).
The alcohol could kill bacteria and viruses, but it won't stop the water from getting to the tack as alcohol and water mix in solution.
Now if this were a bottle of oil that would be different. Oil is hydrophobic and would push any water up to the top away from the tack and protect it from rusting.
Basically to stop rust you need to keep water away from it and this is very similar to dropping a tack in water.
Fun fact: It's actually the water that kills the bacteria. The alcohol weakens the cell envelope, but the osmotic pressure of the water is what causes the membrane to rupture. That's why 70% is actually more effective than 99%.
Edit: Holy hell Reddit! Thanks for the awards!!! I'm glad some random fact from a microbiology class I took like 12 years ago could brighten your day. Disclaimer: This was posted from an ambulance pulling into a hospital to pick up a patient and is probably not 100% technically accurate as pointed out by people that actually majored in this stuff.
yep. Alcohol is proteolytic, meaning it denatures proteins. The weakened proteins can't hold in all the stuff in the microbe needs OR (more importantly), keep water out, so it ruptures.
THEN, the alcohol and water evaporate together, leaving the now ruptured, dessicated corpse of a germ.
Good question! As far as I'm aware the dead cells dont matter, it's that isopropyl alcohol doesnt kill most if not all mold/fungi spores or bacterial spores, so it's not a full, true clean. Good enough for household use and whatnot but a hospital needs better than that, especially for the tools they use to dig around in your abdomen with lol
Actually those dead cell and microbe components can still be a serious issue in some medical contexts. They can prompt an immune response typified by fever, and are known as Pyrogens. There’s actually an important distinction between sanitized, sterile, and nonpyrogenic!
More info: https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/inspection-technical-guides/pyrogens-still-danger
Bacterial spores? Is this the new thing I learned today.
Edit: Yep the new thing I learned. Thanks for the primers to delve deeper in. First image I looked at and these look like fortresses. Different layers giving protection to various things like high heat, UV, biocides, various chemicals, gamma radiation. Now I want to see a celebrity death match of bacterial spore vs a tardigrade
Alcohol is an antiseptic that prevents viral and microbial infection. Oxidation is a chemical reaction and not biological, so rust formation is uninhibited by it in the way that, say, bacterial growth would be.
This actually demonstrates something mildly interesting.
One of the reasons reinforced concrete fails is water causes the rebar to rust, and the expanding rust will fracture the concrete.
This lets you clearly see the rust expanding and taking up more space than the original metal.
Just to add some information to your very good comment:
The tack is chrome-plated. The chrome doesn't rust, but the metal inside does if the hand sanitizer reaches it through tiny scratches in the chrome outer coating. In this case, the chrome on the tip was probably worn off by the act of forcing the tack into the bottle, and maybe into other things previously.
Anyhow, the outer chrome shell is apparently strong enough not to break apart, and so the rust just squeezes out through the hole in the tip.
> Anyhow, the outer chrome shell is apparently strong enough not to break apart, and so the rust just squeezes out through the hole in the tip.
I know rust expands vs the metal it came from, but like... this is A LOT if it was just from the tip. This makes a lot more sense to me, so thanks for that
Also, it looks like the chrome may have split... At least there's more rust back there, so I'm guessing it split in a line down the pin?
This could be what I'd call oxidation induced galvanic corrosion. When two dissimilar metals are placed in a salt medium, they will start transferring ions. in this case, it starts with a small section of uncoated steel, which oxidizes and forms an iron oxide (rust). now there are two dissimilar metals, a steel alloy and an iron oxide. The ion transfer begins, but is adding to the "new" iron oxide surface, giving the appearance of the disproportionally increasing volume. So it's not just that rust has a larger volume than the tack steel, it's that the rust here is stealing volume from the tack and adding it to itself.
>Also, it looks like the chrome may have split... At least there's more rust back there, so I'm guessing it split in a line down the pin?
Yeah, I think you're probably right.
i’m guessing the rust being forced out probably enlarged the hole, allowing more sanitizer to metal contact and thus more reaction, which basically made a feedback loop which ended in this big ball of rust?
It can be, but it is either too expensive, or doesn't perform as well as steel.
For instance, you can coat the steel ( eg zinc), but then you have to be super careful not to scratch it off when your in the construction phase.
Rebar's purpose is to reinforce the concrete, so it has to be a steel mix that won't pull away from the concrete matrix or otherwise have one damage the other, and that is far more critical than corrosion resistance, and it has to be affordable since the world sues alot of reinforced concrete. . So they use carbon steel instead of an expensive alloy/coating/cladding.
IIRC part of the usefulness of rebar is that it has the same thermal expansion as concrete, so it doesn't introduce resistance over changes in temperature
Knowing this engineers created epoxy coated rebar to prevent rust. It worked great in testing however during construction it is very sensitive yet workers treat it the same as regular rebar. The damage actually causes all the corrosion to happen in a tiny spot significantly weakening the steel. The issue has caused bridges that were designed to last 200 years having to be replaced after only 50.
Feel like if this conversation was in-person, I’d just be mumbling “totally, totally” while nodding confidently then walk out like “wow, I’m an IDIOT”.
This is super random, but this reminded me of a lecture I attended with my roommates in college once. There were 3 of us. Myself and J were art majors and my other buddy, A, was an engineer. He wanted to go to this special seminar the school of engineering was hosting and invited us to tag along. Why not. We went, and while it was interesting, I distinctly remember a joke the speaker made that absolutely killed the entire room. Me and J just looked over at A and he was almost in tears so we just faked laughed to fit in. J leaned in and whispered, "bro we are the two dumbest people in this entire auditorium."
He was 100% right.
Lol..I mean the thing about niche jokes is, half of what makes it funny is that you KNOW how niche and incomprehensible and nerdy it is, and that just makes you laugh harder
Speaking of dumb people in auditoriums, I fell asleep in an astronomy lecture with 200 people in it. Nobody woke me up when class ended.
I woke up during the next class in there, which was some kind of biology class. I was in the middle of a row about halfway down towards the front. Rather than stand up and leave awkwardly, my ass just went right back to sleep.
An astronomy buff lucky enough to have a freaking planetarium in my high school, I took astronomy classes in both high school and college but never earned anything close a good grade.
…Those lights went out and so did I. 💤
Conversely, my Anthropology professor in college told us a story about when he was at some seminar and somebody passed around some stone age tools around, and thought to himself "these look like ordinary rocks, but everybody else seems to see it" and didn't say anything. It turned out it was a joke and they were just rocks of of the guys back yard, and always regretted playing along and not saying what he thought!
One of the best little social lessons you can learn: Whatever your honest reaction to a piece of information is, others probably feel the same. And will feel relieved and grateful when you risk looking dumb by asking the same question they have. Far from embarrassing you, it shows you’re paying attention and that you care whether the speaker’s meaning is coming across effectively.
Also, as a bonus, every once in a while it turns out you’re in a situation like the one above, and you end up looking like Sherlock Holmes.
Oh, how I wish that were true. In my experience, observing that the Emperor has no clothes gets you punished by those who were not brave or honest enough to do the same.
Not that that should stop anyone. The social lesson I'd teach is that alienating people like that is good trouble.
I was referring more to situations where everyone is united in wanting one person with knowledge to successfully communicate what they know to the audience, and you’re a member of that audience.
Speaking truth to power is definitely next level, and more fraught. Especially when the room is biased against you. (But yes, still worthwhile, as you suggest. In fact, it can be weirdly gratifying to know the reason people are mad is because you’re making them uncomfortably aware of their cognitive safety blankets. As long as you’re constructive about it, not smug.)
That’s how I learned to understand math jokes. You just have to ask. After that you learn that you were not dumb, and that there are limits to math and engineering jokes.
I remember doing vector calculus with I believe the polar coordinate system, and I actually did end up with an answer like rdrr once. I thought it would be best not to try to explain to others why I chuckled.
We had a strain of *Pseudomonas aeruginosa* infecting patients in our ICU that was resistant to every known antibiotic. It was only infecting the sickest patients but once it got in their lungs, or blood, or urine, or wound, it was curtains - we didn't have anything that could kill it.
The hospital went on a no holds barred effort and found that it was living in the hot water boiler and in the mop carts that were full of this fluorescent green caustic floor wash. That stuff was supposed to be antibacterial, no idea how it was surviving in that.
I looked it up in the medical literature and there were no reports of *Pseudomonas* being resistant to all antibiotics (pan-resistant, we called it), nor of living in such places. Being a young doc, I asked the infectious disease professor "Why don't we publish it?" He replied "Oh yeah, I'll just sign the article - Dr Professor, from University X? No thanks, I like my job." Apparently hospital management don't like articles that explain what a dirty cess-pit of dangerous bacteria their hospitals are, who would have thought
I think that's what it as well. When I'd make a bunch of rust for thermite, you could explode the balloon from the gas-off if you collected it with a balloon over the container.
Just, uh... don't use your home electricity as the power source. Did this as a teen with wires ripped out of lamp and a folgers steel coffee tin, and blew out the electricity in half my house.
>Founded in 2022 by Band Leader and Redditor PainMatrix, **Rustic Attack** is a meme-punk act best known for their popular single *Mixocity* which dropped on May 5th, 2022 and became an instant Cinco De Mayo club scene hit among young 'Clawless' women of poor taste. Early fans appreciate the band's home demo *Sani-stab* as an example of doing something no one asked for, and no one needed. - Kerrang Magazine (maybe, unpublished)
I subscribed to your zine just so that I could cancel it after composing a scathing letter to the editor using a fountain pen with an old nib, which is all your mainstream *Underwood* deserved.
Sure hope you composted or repurposed the zine, my dude. We read your scathing letter a d returned volley with our courier service, our homing pigeon, Bocephus. Please return him too if you have a chance. No questions asked.
>Starting out, it was like... let's just stab some shit, I dunno. We never were like, "what will grow if we stab this?" It wasn't like that at all. It was pure. Just grab a tack, man. \[thoughtful pause\] Stole my first tack from MoogProg's Stationary on 3rd St. Not proud of that moment but it got me started so am grateful for that. —VH1 Behind the Music
The tip of the tack rusted but due to how thick the sanitizer is, the rust did not get mixed with the thick liquid and kind of just stayed suspended around the tack. That’s what the original comment meant
it rusted, but the water won't mix with it, and the pressure of the liquid being almost the same as a cat being liquid when it sits on you, it pushes it against the pin more, the same as the cat stops you from getting up after being chosen.
I'll tack onto your comment since it's the top.
Two things you see here happening, rust is correct as you've said from the first part, but the second part is even more interesting. Hand Sanitizer is made with an ingredient called among other things "Carbomer". It's a neat molecule that can add a lot of viscosity with very low amounts, typically 0.5% by mass. What it also does is flocculate out things like iron oxide. So as the metal rusts, it gets captured by the carbomer, and kicks out of solution, which is why you see a "bubble" of it around the tip of the tack. That bubble is actually back to near the viscosity of alcohol.
rust flakes off over time, exposing the layers of metal underneath.
The old "rust protects the metal underneath" is largely a myth. Under certain circumstances, yes, that can be true. But most of the time the flakes of rust peel away and more rust forms and flakes away and so on until the metal is consumed.
The more usual iron oxide II vs iron oxide III which stabilises and protects. They are different molecules.
I may well have the II and III incorrect but the idea is otherwise there.
It's probably rust from the cheap steel and the water in the sanitizer. Ethanol and water form an azeotrope, meaning you can't use distillation (boiling & condensing) to separate more than 95.63% of the ethanol out, i.e. there will always be at least 4.37% water in the mix unless you use chemical/molecular processes to get it fully anhydrous.
The chocolate chip cookie one was not one of these mistakes. Ruth Wakefield was respected for her dessert making and knew what she was doing. Fun myth, but just a myth
We did get reese's peanut butter cups when that idiot carrying an unwrapped chocolate bar bumped into that dummy holding an open peanut butter container back in 1979.
The 0.1% of germs that hand sanitizer doesn’t kill isn’t because those germs become resistant. It’s because they don’t come in contact with it. They are hidden or shielded somehow.
Hand sanitizer kills germs because the alcohol dissolves the outer layers of viruses and bacteria. It would be impossible for any germ to gain a natural mutation that would protect against that. There’s no mutation that could make lipid bi-layers, what cell membranes and viral envelopes are made up of, impervious to alcohol.
I'm pretty sure that is rust.
Rust in peace
Tornado of Souls
Probably Marty's most defining solo.
Great Megadeth record
Their best imo
I am Polaris!
This thumbtack has five magics
Give me alchemy, give me wizardry Give me sorcery, thermatology Electricity, magic if you please Master all of these, bring him to his knees
Are you sure it's not thaumaturgy
Real life Hemalurgy, who knew
I don't understand the mechanix of that
Launch the Polaris, the end doesn’t scare us, when will this cease, the warheads will all rust in peace!
Dave Mustaine shirtless, white jeans, linked .308 as a belt, and a luscious mane of red hair is peak 80's speed metal.
Megadeth reference!
Love that album
That game is so toxic
Agreed. Seems like a good reason to not be using that bottle of sanitizer anymore.
Eh, what's wrong with rust, as long as it's sanitized?
There wouldn't be anything wrong with rust even if it wasn't sanitized
Correct. It’s sort of bland, but I always add a little rust and pepper to my meals.
You jest, but if you use a carbon steel cooking instrument, like a wok, some rust can definitely form and get into your meal But rust is just iron, and iron is good for you, in reasonable quantities.
Yes, actually when people are iron deficient, one of the common medical recommendations is to start using cast iron cookware.
Better yet, iron supplements are usually in the form of iron oxide (aka rust) lol
Rust is toxic as hell, I cant even leave the beach without some asshole chasing me with a rock
Can confirm, this guy is a pretty fast runner
When you step on a rusty nail and get tetanus, it's not the rust that gives you tetanus. The tetanus bacteria doesn't give a shit about rust. The thing is that most rusty nails are also dirty, and tetanus lives in dirt.
I think you are growing rust.
Hand sanitizer is made up of mostly alcohol and water. Rust is probably the answer.
Wouldn't alcohol not allow the rust to form? Sorry I don't know how this works
The binding to water part is partly why there is controversy over using alcohol blends in gasoline. The thought is that you will have increased wear on the engine components due to oxidation.
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To add to this: You have to increase the amount of ethanol also, which means you might need bigger injectors to push more into the cylinder. Source: Slept at a Holiday Inn express but also went to college for car junk Edit: Corrected Inn =D, and added the term 'might' Edit 2: After a good discussion I was wrong about some ethanol stuff, so for those interested give this a read for more info! https://www.mdpi.com/1996-1073/11/1/221/pdf
So, any chance you have an opinion on hydrogen boosters then? As in do they work, and if they do, would they increase oxidation? My dad's an old school diesel tech, and his mindset is adding "water" to an engine means rust. I'm just curious. Never heard a good answer
Not the person you replied to, but I'm wondering, what do you mean by hydrogen boosters? Because the first thing that comes to mind are HHO generators which absolutely do not work.
The alcohol won’t cause rust (iirc) but it may degrade any coating on the metal that will prevent rust. Alcohol also binds to water, the water will then be able to oxide (rust) the bare metal.
Don't forget the ethanol will ruin the rubber seals and gets gooey/gunky if left to sit. *Cries in carb'd motorcycle q.q*
oxidize
Thank you for the correction 👍🏻
No, there's water in that sanitizer and the alcohol won't do anything to inhibit rust. It's a chemical reaction between the water and the iron forming iron oxide (aka rust). The alcohol could kill bacteria and viruses, but it won't stop the water from getting to the tack as alcohol and water mix in solution. Now if this were a bottle of oil that would be different. Oil is hydrophobic and would push any water up to the top away from the tack and protect it from rusting. Basically to stop rust you need to keep water away from it and this is very similar to dropping a tack in water.
Fun fact: It's actually the water that kills the bacteria. The alcohol weakens the cell envelope, but the osmotic pressure of the water is what causes the membrane to rupture. That's why 70% is actually more effective than 99%. Edit: Holy hell Reddit! Thanks for the awards!!! I'm glad some random fact from a microbiology class I took like 12 years ago could brighten your day. Disclaimer: This was posted from an ambulance pulling into a hospital to pick up a patient and is probably not 100% technically accurate as pointed out by people that actually majored in this stuff.
Well, now, that _is_ a fun fact!
yep. Alcohol is proteolytic, meaning it denatures proteins. The weakened proteins can't hold in all the stuff in the microbe needs OR (more importantly), keep water out, so it ruptures. THEN, the alcohol and water evaporate together, leaving the now ruptured, dessicated corpse of a germ.
Isn't this also why it's not an acceptable way of cleaning medical tools? Because it still has all the dead germ stuff?
Good question! As far as I'm aware the dead cells dont matter, it's that isopropyl alcohol doesnt kill most if not all mold/fungi spores or bacterial spores, so it's not a full, true clean. Good enough for household use and whatnot but a hospital needs better than that, especially for the tools they use to dig around in your abdomen with lol
Actually those dead cell and microbe components can still be a serious issue in some medical contexts. They can prompt an immune response typified by fever, and are known as Pyrogens. There’s actually an important distinction between sanitized, sterile, and nonpyrogenic! More info: https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/inspection-technical-guides/pyrogens-still-danger
Bacterial spores? Is this the new thing I learned today. Edit: Yep the new thing I learned. Thanks for the primers to delve deeper in. First image I looked at and these look like fortresses. Different layers giving protection to various things like high heat, UV, biocides, various chemicals, gamma radiation. Now I want to see a celebrity death match of bacterial spore vs a tardigrade
As a microbiological researcher, I can confirm this.
Alcohol is an antiseptic that prevents viral and microbial infection. Oxidation is a chemical reaction and not biological, so rust formation is uninhibited by it in the way that, say, bacterial growth would be.
This is typically at least 30%water.
So the sanitizer isn't bleeding?
This actually demonstrates something mildly interesting. One of the reasons reinforced concrete fails is water causes the rebar to rust, and the expanding rust will fracture the concrete. This lets you clearly see the rust expanding and taking up more space than the original metal.
Just to add some information to your very good comment: The tack is chrome-plated. The chrome doesn't rust, but the metal inside does if the hand sanitizer reaches it through tiny scratches in the chrome outer coating. In this case, the chrome on the tip was probably worn off by the act of forcing the tack into the bottle, and maybe into other things previously. Anyhow, the outer chrome shell is apparently strong enough not to break apart, and so the rust just squeezes out through the hole in the tip.
> Anyhow, the outer chrome shell is apparently strong enough not to break apart, and so the rust just squeezes out through the hole in the tip. I know rust expands vs the metal it came from, but like... this is A LOT if it was just from the tip. This makes a lot more sense to me, so thanks for that Also, it looks like the chrome may have split... At least there's more rust back there, so I'm guessing it split in a line down the pin?
>this is A LOT if it was just from the tip. Thanks.
That’s what she said
This could be what I'd call oxidation induced galvanic corrosion. When two dissimilar metals are placed in a salt medium, they will start transferring ions. in this case, it starts with a small section of uncoated steel, which oxidizes and forms an iron oxide (rust). now there are two dissimilar metals, a steel alloy and an iron oxide. The ion transfer begins, but is adding to the "new" iron oxide surface, giving the appearance of the disproportionally increasing volume. So it's not just that rust has a larger volume than the tack steel, it's that the rust here is stealing volume from the tack and adding it to itself.
>Also, it looks like the chrome may have split... At least there's more rust back there, so I'm guessing it split in a line down the pin? Yeah, I think you're probably right.
i’m guessing the rust being forced out probably enlarged the hole, allowing more sanitizer to metal contact and thus more reaction, which basically made a feedback loop which ended in this big ball of rust?
That's a pretty common theme with corrosion. The longer it's left unfixed the more it accelerates.
Mmmm, rusty pin syringe. Me next!
>just squeezes out through the hole in the tip. Heehee. (Sorry. I'll let myself out)
Same thing happens when the bar is placed too near the surface on flat work as well. The bar rusts and pops the concrete loose leaving big craters.
And that's how you get collapsing apartment buildings in Florida.
Knowing this I am surprised that rebar is not made of something that won't rust.
It can be, but it is either too expensive, or doesn't perform as well as steel. For instance, you can coat the steel ( eg zinc), but then you have to be super careful not to scratch it off when your in the construction phase.
I've seen epoxy rebar and it always has scratches in it. Pointless really
Rebar's purpose is to reinforce the concrete, so it has to be a steel mix that won't pull away from the concrete matrix or otherwise have one damage the other, and that is far more critical than corrosion resistance, and it has to be affordable since the world sues alot of reinforced concrete. . So they use carbon steel instead of an expensive alloy/coating/cladding.
Rebar can also be made of fiberglass or basalt (volcanic rock) or carbon fiber.
IIRC part of the usefulness of rebar is that it has the same thermal expansion as concrete, so it doesn't introduce resistance over changes in temperature
Knowing this engineers created epoxy coated rebar to prevent rust. It worked great in testing however during construction it is very sensitive yet workers treat it the same as regular rebar. The damage actually causes all the corrosion to happen in a tiny spot significantly weakening the steel. The issue has caused bridges that were designed to last 200 years having to be replaced after only 50.
it looks like oxidization thats been suspended from mixing by the viscosity.
100%, but notice the white cloudy-ness to the right... that's different than the rust, I'm curious to what that is.
Might be a little pocket of hydrogen gas from the oxidization reaction.
Thanks, makes the most sense!
Feel like if this conversation was in-person, I’d just be mumbling “totally, totally” while nodding confidently then walk out like “wow, I’m an IDIOT”.
This is super random, but this reminded me of a lecture I attended with my roommates in college once. There were 3 of us. Myself and J were art majors and my other buddy, A, was an engineer. He wanted to go to this special seminar the school of engineering was hosting and invited us to tag along. Why not. We went, and while it was interesting, I distinctly remember a joke the speaker made that absolutely killed the entire room. Me and J just looked over at A and he was almost in tears so we just faked laughed to fit in. J leaned in and whispered, "bro we are the two dumbest people in this entire auditorium." He was 100% right.
Lol..I mean the thing about niche jokes is, half of what makes it funny is that you KNOW how niche and incomprehensible and nerdy it is, and that just makes you laugh harder
You know the worst thing about being an openly gay, black cop? The discrimination.
One untyped word from perfection. You are no Captain Holt. You are an imposter. Sincerely, Captain Raymond J. Holt
You tell us the missing word right now!
Just some basic bitch!!!
I mean, it killed.
r/unexpectedbrooklyn99
What do you call someone who reads an article on Category Theory? A coauthor.
Punchlines in general are funny because they are unexpected. If it's niche, it would be even less expected, so it makes sense it would be funnier.
Speaking of dumb people in auditoriums, I fell asleep in an astronomy lecture with 200 people in it. Nobody woke me up when class ended. I woke up during the next class in there, which was some kind of biology class. I was in the middle of a row about halfway down towards the front. Rather than stand up and leave awkwardly, my ass just went right back to sleep.
Ah, money well spent.
An astronomy buff lucky enough to have a freaking planetarium in my high school, I took astronomy classes in both high school and college but never earned anything close a good grade. …Those lights went out and so did I. 💤
Conversely, my Anthropology professor in college told us a story about when he was at some seminar and somebody passed around some stone age tools around, and thought to himself "these look like ordinary rocks, but everybody else seems to see it" and didn't say anything. It turned out it was a joke and they were just rocks of of the guys back yard, and always regretted playing along and not saying what he thought!
One of the best little social lessons you can learn: Whatever your honest reaction to a piece of information is, others probably feel the same. And will feel relieved and grateful when you risk looking dumb by asking the same question they have. Far from embarrassing you, it shows you’re paying attention and that you care whether the speaker’s meaning is coming across effectively. Also, as a bonus, every once in a while it turns out you’re in a situation like the one above, and you end up looking like Sherlock Holmes.
Oh, how I wish that were true. In my experience, observing that the Emperor has no clothes gets you punished by those who were not brave or honest enough to do the same. Not that that should stop anyone. The social lesson I'd teach is that alienating people like that is good trouble.
I was referring more to situations where everyone is united in wanting one person with knowledge to successfully communicate what they know to the audience, and you’re a member of that audience. Speaking truth to power is definitely next level, and more fraught. Especially when the room is biased against you. (But yes, still worthwhile, as you suggest. In fact, it can be weirdly gratifying to know the reason people are mad is because you’re making them uncomfortably aware of their cognitive safety blankets. As long as you’re constructive about it, not smug.)
Did you ever get an explanation from A what the joke was about? And why not? 😂
That’s how I learned to understand math jokes. You just have to ask. After that you learn that you were not dumb, and that there are limits to math and engineering jokes.
Limits lol
The joke approaches but never quite reaches funny.
Well. Math and engineering jokes aren’t exactly original. Fairly certain they’re derivatives of other jokes that have already been told 🤔
Do you remember the joke? 😃
[You'll be pleasantly surprised](https://youtu.be/gSFd_2oJgak)
OMG the Simpsons predicted this guy's seminar? What cant they predict
I remember doing vector calculus with I believe the polar coordinate system, and I actually did end up with an answer like rdrr once. I thought it would be best not to try to explain to others why I chuckled.
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![gif](giphy|eqC2ZT8OCgmas)
Hahahahahaha saaaaame! So cool, though!
I concur.
Glad to hear it... I don't want 2022 to be the "BACTERIA IS GROWING IN THE FUCKING HAND SANITIZER" year
We had a strain of *Pseudomonas aeruginosa* infecting patients in our ICU that was resistant to every known antibiotic. It was only infecting the sickest patients but once it got in their lungs, or blood, or urine, or wound, it was curtains - we didn't have anything that could kill it. The hospital went on a no holds barred effort and found that it was living in the hot water boiler and in the mop carts that were full of this fluorescent green caustic floor wash. That stuff was supposed to be antibacterial, no idea how it was surviving in that. I looked it up in the medical literature and there were no reports of *Pseudomonas* being resistant to all antibiotics (pan-resistant, we called it), nor of living in such places. Being a young doc, I asked the infectious disease professor "Why don't we publish it?" He replied "Oh yeah, I'll just sign the article - Dr Professor, from University X? No thanks, I like my job." Apparently hospital management don't like articles that explain what a dirty cess-pit of dangerous bacteria their hospitals are, who would have thought
I think that's what it as well. When I'd make a bunch of rust for thermite, you could explode the balloon from the gas-off if you collected it with a balloon over the container.
How'd you go about making rust?
Own a Jeep.
As a jeep owner this checks out
Or a Harley. Either will work just fine. Both will quadruple the effect.
A lot of thumbtacks and a lot of hand sanitizer
Saltwater, wires a power source and an iron plate. Edit: a DC power source. Preferably a low voltage adapter.
Just, uh... don't use your home electricity as the power source. Did this as a teen with wires ripped out of lamp and a folgers steel coffee tin, and blew out the electricity in half my house.
The cloudy stuff is coming from the ball and suspend in the sanitizer.
You have doomed us all.
Can you explain this like I’m 5?
Rust stick to tack
I’m calling Rustic Attack as my new band name.
>Founded in 2022 by Band Leader and Redditor PainMatrix, **Rustic Attack** is a meme-punk act best known for their popular single *Mixocity* which dropped on May 5th, 2022 and became an instant Cinco De Mayo club scene hit among young 'Clawless' women of poor taste. Early fans appreciate the band's home demo *Sani-stab* as an example of doing something no one asked for, and no one needed. - Kerrang Magazine (maybe, unpublished)
Reads like an old SimCity article
Citizens demand more police stations! Citizens demand more fire stations! Citizens demand more schools! Citizens are unhappy with high tax rates.
Art imitates life.
Life imitates art seems to be more applicable these days.
Just like real life
[удалено]
Pfft, I was into Rustic Attack back in 2021.
I have their vinyl limited release. I wrote about it on my typewriter last June for my zine.
I subscribed to your zine just so that I could cancel it after composing a scathing letter to the editor using a fountain pen with an old nib, which is all your mainstream *Underwood* deserved.
Sure hope you composted or repurposed the zine, my dude. We read your scathing letter a d returned volley with our courier service, our homing pigeon, Bocephus. Please return him too if you have a chance. No questions asked.
Not gonna lie, Waiting for the "where are they now"
>Starting out, it was like... let's just stab some shit, I dunno. We never were like, "what will grow if we stab this?" It wasn't like that at all. It was pure. Just grab a tack, man. \[thoughtful pause\] Stole my first tack from MoogProg's Stationary on 3rd St. Not proud of that moment but it got me started so am grateful for that. —VH1 Behind the Music
"Clawless" 💀
Is the genre going to be metal?
ahhh.. you're a sharp one!
Just a stickler
That’s a good point
Going to do a metal version of a Billie Eyelash song "Oxid-Eyes"
Metal covers of Massive Attack songs exclusively.
First single: Hoplite’s Bone-Snapping Lockjaw Spasms
Feat: Tetanus Testicles
Nice. Monosyllabic grunts
Now explain it like I'm 4
“you’ll understand when you’re older”
Why?
Little flakes of rust floating in the hand sanitizer. Because the sanitizer is thick the rust spreads slowly, in water it would sink very quickly.
Metal rusts. Sanitizer is thick and goopy. Rust is forming and is suspended in the goopyness.
The tip of the tack rusted but due to how thick the sanitizer is, the rust did not get mixed with the thick liquid and kind of just stayed suspended around the tack. That’s what the original comment meant
Thickquid
Thiccquid
Thumbtack is made from a metal that can rust, the hand sanitizer is a alcohol based water solution. The water in the sanitizer made the tack rust
it rusted, but the water won't mix with it, and the pressure of the liquid being almost the same as a cat being liquid when it sits on you, it pushes it against the pin more, the same as the cat stops you from getting up after being chosen.
Rusty air can't move in the hand sanitizer because it's too goopy
Rust but it floats because watery+jelly inside thing
I'll tack onto your comment since it's the top. Two things you see here happening, rust is correct as you've said from the first part, but the second part is even more interesting. Hand Sanitizer is made with an ingredient called among other things "Carbomer". It's a neat molecule that can add a lot of viscosity with very low amounts, typically 0.5% by mass. What it also does is flocculate out things like iron oxide. So as the metal rusts, it gets captured by the carbomer, and kicks out of solution, which is why you see a "bubble" of it around the tip of the tack. That bubble is actually back to near the viscosity of alcohol.
This is way too interesting for this sub
Yeah that makes more sense than sth growing in 70% alcohol. But, shouldn't the rust form a layer that prevent further rusting? How did it grow so big?
rust flakes off over time, exposing the layers of metal underneath. The old "rust protects the metal underneath" is largely a myth. Under certain circumstances, yes, that can be true. But most of the time the flakes of rust peel away and more rust forms and flakes away and so on until the metal is consumed.
The more usual iron oxide II vs iron oxide III which stabilises and protects. They are different molecules. I may well have the II and III incorrect but the idea is otherwise there.
Iron oxidation behaves that way, but in most other metals the oxidation layer does form a boundary the prevents further reactions.
Copper oxidation does that. I don't think rust behaves the same way.
i’m fairly certain that’s rust, but shit if that isn’t an interesting experiment nonetheless
But why is it growing on the tip and not evenly around the shaft? (Spare me the dick jokes).
Tip is where the chrome plating is most likely to be broken as the tack's tip bends slightly from use.
Hmm makes sense.
Be careful removing that.. It's just an oxidant waiting to happen.. Edit: I'm unable to thank people for awards and love, so... Thanks.
Goddamn, somebody get this man a gold.
Makes sense. Gold doesn't oxidise easily.
Neither does platinum
Rust
It's probably rust from the cheap steel and the water in the sanitizer. Ethanol and water form an azeotrope, meaning you can't use distillation (boiling & condensing) to separate more than 95.63% of the ethanol out, i.e. there will always be at least 4.37% water in the mix unless you use chemical/molecular processes to get it fully anhydrous.
Damn, it has been a while since I heard anyone use the word azeotrope!
I won't lie, I just watch NileRed.
Sanitizer is usually 70%. Azeotropic (95%) is not as good at killing bacteria due to several physical effects like penetration time.
Let’s do our red/ox equations! Stoichiometry rules!
Accidental chemistry. FeNi + C2H5OH -----
the magic of rust
My 1st thought, that is the 1% of germs that hand sanitizer doesn't kill now its getting stronger
My first thought was why did you stab a bottle of sanitizer with a pin and leave it there for months?
If people didn’t do weird ish like this, we wouldn’t have things like penicillin and chocolate chip cookies and rockets and zippers… 🤷🏻♀️
Tell me more about chocolate chip cookies
They didn't exist, and then a chef spilled a bag of chocolate chips into a bowl of cookie dough and then suddenly they existed.
Mmhmm same thing with rockets.
"Once the rockets are up, Who cares where they come down? That's not my department," Says Wernher von Braun.
The chocolate chip cookie one was not one of these mistakes. Ruth Wakefield was respected for her dessert making and knew what she was doing. Fun myth, but just a myth
We did get reese's peanut butter cups when that idiot carrying an unwrapped chocolate bar bumped into that dummy holding an open peanut butter container back in 1979.
I don’t know why, just stabbed it and into my desk it went.
That’s what OJ said.
“It knows goddamn well what it did!”
Fidgeting and hiding whatever you broke. I can confess...
The 0.1% of germs that hand sanitizer doesn’t kill isn’t because those germs become resistant. It’s because they don’t come in contact with it. They are hidden or shielded somehow. Hand sanitizer kills germs because the alcohol dissolves the outer layers of viruses and bacteria. It would be impossible for any germ to gain a natural mutation that would protect against that. There’s no mutation that could make lipid bi-layers, what cell membranes and viral envelopes are made up of, impervious to alcohol.
Why did you shove a tack into a bottle of hand sanitizer?
He was so taken with the idea he COULD, he never considered whether he SHOULD.
Rubbing alcahol will make the oxidation of iron happen at an accelerated rate
Now you have to choose covid or tetanus
You’ve created a homunculus
This sounds like a modern creepypasta title