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Monday, November 8, 2021

In the Seinfeld episode "The Junior Mint", Jerry and Kramer are watching an operation of a man who gets his spleen removed. Kramer is eating Junior Mints, and fumbles one that drops into the cavity of the patient, unbeknownst to the doctors. What outcome would a patient have IRL if this happened?

In the Seinfeld episode "The Junior Mint", Jerry and Kramer are watching an operation of a man who gets his spleen removed. Kramer is eating Junior Mints, and fumbles one that drops into the cavity of the patient, unbeknownst to the doctors. What outcome would a patient have IRL if this happened?

In the Seinfeld episode "The Junior Mint", Jerry and Kramer are watching an operation of a man who gets his spleen removed. Kramer is eating Junior Mints, and fumbles one that drops into the cavity of the patient, unbeknownst to the doctors. What outcome would a patient have IRL if this happened?

Posted: 07 Nov 2021 07:58 PM PST

I presume an infection, but wasn't sure if possibly the body would somehow breakdown/consume the food?

submitted by /u/peternorthstar
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AskScience AMA Series: I'm Mike Parker Pearson, Archaeologist and Professor of British Later Prehistory at University College London, here to talk about my research around the world and on Stonehenge, AMA!

Posted: 08 Nov 2021 04:01 AM PST

Hi, Reddit! I've worked on archaeological sites around the world in Denmark, Germany, Greece, Syria, the United States, Madagascar, Easter Island (Rapanui) and the Outer Hebrides. I have been UK Archaeologist of the Year and am a Fellow of the British Academy. My research on Stonehenge over nearly 20 years has helped to transform our understanding of this enigmatic stone circle, including the discovery of a new henge, a settlement where Stonehenge's builders may have lived, and the quarries for Stonehenge's bluestones in the Preseli hills of west Wales. I've published 24 books on a wide variety of archaeological topics, but I really love being out doing fieldwork.

You can follow more of my recent work on PBS' Secrets of the Dead episode, where my team and I painstakingly searched for the evidence that would fill in a 400-year gap in our knowledge of the site's bluestones. The episode reveals the original stones of Europe's most iconic Neolithic monument had a previous life before they were moved almost 155 miles from Wales to Salisbury Plain.

I'll be ready to go at 3:00pm EST (20:00/8:00pm GMT), AMA!

Username: /u/ArchaeologyUK2021

submitted by /u/AskScienceModerator
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What are the gases in bloated Lithium-Ion batteries?

Posted: 08 Nov 2021 04:09 AM PST

Does the immune system recognize and attack prions?

Posted: 07 Nov 2021 11:25 PM PST

Do your pupils really dilate when looking at someone you find attractive?

Posted: 08 Nov 2021 12:18 AM PST

Is there higher background radiation directly under the Aurora?

Posted: 07 Nov 2021 11:03 PM PST

If i'm not mistaken, earth's magnetic field deflect charged particles, and pushes them to the poles, creating the Auroras. Also if i'm not wrong, the background radiation can vary really highly from place to place, because it's affected by many variants. But is there any increase in the background radiation, if you stand right under the northern lights or the cosmic radiation level stay consistent?

submitted by /u/Rider_Raccoon
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Paper Manufacturing Question: Can somebody explain how is wastepaper recycled into bond paper?

Posted: 08 Nov 2021 06:59 AM PST

Do mental health conditions make a person more susceptible to other illnesses?

Posted: 07 Nov 2021 05:35 AM PST

I've had a rough couple of years struggling with anxiety and depression. I've also been getting every cold going around, and I've had a cough for the past 5 months. So I was wondering if there is any correlation between poor mental health and physical health

submitted by /u/languishing_pencil
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Can you get severe covid after recovering from mild/asymptotic covid?

Posted: 08 Nov 2021 01:47 AM PST

If you react mildly to one covid infection could you expect further infections to be mild too? Do anyone have statistics of repeated infections? Let's assume that nothing major have happened in your life like getting depressed and fat in a year.

submitted by /u/Puzzled-Bite-8467
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Why is there "degree" in temp scales?

Posted: 07 Nov 2021 07:15 AM PST

It's °C, °K, °F

I know ° only from geometry.

why not simply 20 C?

submitted by /u/need4cognitionde
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In a phased array, what are the factors limiting coherent and non coherent integration?

Posted: 07 Nov 2021 06:59 PM PST

I've read that when integrating radar pulses, the SNR gain when performing coherent integration is equal to the number of pulses integrated. In non-coherent integration (regardless of technique used), the snr gain is equal to only the square root of the number of pulses. I am curious why you'd ever use non coherent integration when coherent integration's gain is so much better.

submitted by /u/commercial_skin2107
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How does phone volume work?

Posted: 07 Nov 2021 11:32 PM PST

Let's say you have headphones that can plan 100dB at maximum volume. If you set volume to 50% on your phone, does that mean, that headphones are playing now with 50dB or some other value, like 75dB. How does volume scale and how does it work?

submitted by /u/Eryk245
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Is the "packed sphere" graphic used to represent an atomic nucleus accurate?

Posted: 07 Nov 2021 09:08 PM PST

I know of course that the electron visualization of a "moon orbiting a planet" is totally incorrect, electrons are best visualized as clouds of probability. There are a ton of beautiful visualizations for these on various websites, including Falstad.

There doesn't seem to be any information about atomic nuclei though. Are they best visualized as the classic "packed sphere"? Or should they be represented as a probability cloud also, and if so, what does that look like? Or do we simply not know?

submitted by /u/makhno
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what happens to ergocalciferol in the liver and kidneys??

Posted: 07 Nov 2021 09:04 PM PST

cholecalciferol is converted to 25 hydroxyvitmain d and to calcitriol in liver and kidney respectively, but what happens to vitmain d2.

according to https://pubchem.ncbi.nlm.nih.gov/compound/Calcitriol , "Calcitriol is a synthetic physiologically-active analog of vitamin D, specifically the vitamin D3 form."

so what is the active form of vitamin d2 ??

submitted by /u/Winchester_Granger13
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Many WWII artillery shells were not statically stable, with a center of pressure in front of the center of mass. What caused the shells to land point down after following a high trajectory? Wouldn't the spin from the rifling make it even more difficult for the shell to turn nose down?

Posted: 07 Nov 2021 07:12 PM PST

How does changing ionic strength affect pH?

Posted: 07 Nov 2021 05:42 PM PST

How did Coulomb Charge the Balls?

Posted: 07 Nov 2021 04:16 PM PST

I know Coulomb didn't know the exact charge of the pith balls he was using when determining Coulombs law with a torsion balance, only their relative charge. What I want to know is what method did he use to charge the balls? Was he just rubbing the balls an insulating material to get the balls to give up electrons?

submitted by /u/pcuk_lcuk
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How does a computer know it needs to use a float/how does it derive the mantissa?

Posted: 07 Nov 2021 02:29 AM PST

So, I've been educating myself about floating point numbers and I understand how a float is represented in binary. I understand that it uses a sign, a mantissa as the body of the number, and an exponent as the offset for the floating point.

What I'm not putting together in my brain is: How can it perform mathematical operations on, say, two integers, and then come out with a float? Let's say we're dividing 1/3. I know how 1/3 as the decimal value .3333... would be represented as a floating point number, and I know how to make that conversion, but a computer doesn't know what .3333... is. Somewhere, it has to realize both "I can't perform this operation" and "the sign, mantissa and exponent to represent this floating point number are...". The resources I've found explaining how those things are derived is only ever deriving them FROM DECIMAL NUMBERS, which obviously, the computer can't actually understand or do anything with.

How does this calculation, (1/3), happen programmatically? What are the "in between points" between telling a computer "divide 0b0001 by 0b0011" and ending up at the correct floating point number?

submitted by /u/LordWorm
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Sunday, November 7, 2021

Why hasn’t bacteriophage therapy become commonplace yet?

Why hasn’t bacteriophage therapy become commonplace yet?

Why hasn’t bacteriophage therapy become commonplace yet?

Posted: 06 Nov 2021 08:26 AM PDT

I feel like it's a discovery on par with something as revolutionary as solar power, but I rarely hear about it ever on the news. With its ability to potentially end the antibiotic resistance crisis, why hasn't this potentially game changing treatment taken off?

submitted by /u/Snappylobster
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Do contact with the virus work as booster shots for vaccinated/recovered people?

Posted: 07 Nov 2021 03:39 AM PST

Does the human body secrete more, less or equal amounts of sweat in dry versus humid environments?

Posted: 07 Nov 2021 04:03 AM PST

hot, humid environments hinder evaporation, causing a person to be visibly more sweaty than they would if they were in a dry climate.

However, my question is this this. If you were to place the same person in both environments with equal temperature, one with zero humidity and one with 100% humidity would the total volume of secreted sweat be more, less or equal in one environment over the other?

What if we conducted the same test again, but this time rather than equal temperatures, we used the "feels like" temperature index. In the dry environment it would measure 107 degrees, and the humid environment 95 degrees with a relative humidity of 50%, resulting in a feels like temperature of 107 degrees. Which environment would a person produce more sweat in if there is a difference.

This question originated from a discussion with friends about that new movie "dune". We are debating if a hot humid environment is more or less dangerous over a hot dry environment 🤔.

submitted by /u/MTA427
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How small and detailed could we make a Fresnel lens?

Posted: 06 Nov 2021 08:38 PM PDT

Seeing them in the wild, you either look at it from a distance or they're quite grainy, I know they're cheap.

So, probably the image might look slightly like the way insect-vision is portrayed in movies, segmented like, but if we can make the tiny tiny little mirrors and sensors in DLP projectors and smartphone camera sensors, (I don't know if the features are smaller on phone cams or pro 16k cams or what) is there any way, expensive and convoluted it may be, to manufacture a super small scale fresnel lens that would provide a clear picture.

I understand this would likely never be profitable in a smartphone or anything but I just love the idea of a telescope that's much wider than it is long, or a pair of binoculars that's scarcely thicker than some thick glasses.

In case you can't tell I don't know how optics work.. I flaired it for Engineers because I suppose that's closest? Rather than physics?

I also just imagined a microtelescope could be made using a DLP mirror module as the collecting mirror with a little sensor in front of it, the uses however, escape me, aside from proof of concept or just messing about.

submitted by /u/StrangerThanDicktion
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How does radioactive iodine work?

Posted: 06 Nov 2021 05:10 PM PDT

For treatment of hyperthyroidism, how does the orally ingested radioactive iodine only have an effect on the thyroid? How does it not cross to other tissue/the rest of the body?

submitted by /u/awins1
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A fetus can move around freely for most of its existence. As it grows larger, what compels it to settle with the head faced downwards?

Posted: 06 Nov 2021 04:12 PM PDT

What colour other than black absorbs the most light?

Posted: 06 Nov 2021 03:59 AM PDT

I would like a ranking of the top 5 colours that absorbs the most light after black.

Thanks

submitted by /u/wallulu
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How do they conduct an experiment on a pill for a virus to determine the probability of surviving viral infection attributed to the pill?

Posted: 06 Nov 2021 09:51 AM PDT

Keep in mind:

I am wondering how they isolate other variables attributable to death/survival.

But also the physical process of creating this experiment, how do they find enough people who they know are going to die from covid without any kind of treatment?

submitted by /u/MrIndira
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If we divide numbers in A004090 with A060384 (sequences in OEIS related to Fibonacci numbers), will we get a constant value?

Posted: 06 Nov 2021 06:23 AM PDT

This is related to the Fibonacci sequence. In OEIS, there are many sequences related to the Fibonacci sequence, like the sum of digits of Fibonacci numbers A004090 and the numbers of decimal digits in n-th Fibonacci number A060384

I made graphs that showed the results of dividing A004090 with A060384, and when I drew the formula, it seemed like the graph tended to get close to certain value.

The graphs

For n = 500, the graph got close to 4.182, and for n = 10000, close to 4.48.

If the sequence of the Fibonacci number continues, what number will become a constant value of dividing A004090 and 060384?

submitted by /u/RegulusWhiteDwarf
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Is it possible that new life has spawned on earth but we just didn't notice?

Posted: 05 Nov 2021 01:05 PM PDT

From my understanding life had to have just spontaneously happened at a single cell level and that life also happened to replicate/reproduce thus causing evolution. Is it possible other life has spontaneously been created but it didn't reproduce so it just died off before we noticed it?

submitted by /u/icey561
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How are granules made from powders to make those instant drink packets?

Posted: 05 Nov 2021 01:03 PM PDT

Crystal Light, Kool Aid, hot cocoa, whatever. Consumer product drink powders are granulized, don't clump in mild humidity, and dissolve quickly/easily as compared to fine powders.

How do I take my DIY drink powder mixes and "granulize" them?

submitted by /u/ostreatus
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Saturday, November 6, 2021

How deep is the Sahara deserts sand, and what's at the bottom of the sand?

How deep is the Sahara deserts sand, and what's at the bottom of the sand?

How deep is the Sahara deserts sand, and what's at the bottom of the sand?

Posted: 05 Nov 2021 01:45 PM PDT

Like is it a solid bedrock kind of surface, or is it a gradient where the sand gets courser and courser until it's bedrock?

submitted by /u/asmosdeus
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Does sweat wicking fabric really exist? Or is this simply marketing, and an inherant trait of any fabric due to capillary action?

Posted: 05 Nov 2021 08:30 AM PDT

absolute zero is the coldest temperature. is there a hottest temperature?

Posted: 05 Nov 2021 08:17 AM PDT

My science teacher in high school said this was a stupid question I asked him. This was 25 years ago. I remember.

submitted by /u/howevertheory98968
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How do components of the immune system move towards foreign invaders?

Posted: 05 Nov 2021 11:04 AM PDT

Is there a chemical pathway behind how leukocytes are able to move to where they need to go?

For example, when skin is broken, the leukocytes in the area know to aggregate at the injured tissue. Or when bacteria invade, immune cells all over the body know to go towards the invader to kill it. I understand that there are certain ways that the immune system differentiates between bacteria and body cells, and that those differences are able to "signal" the immune system to destroy it. But I have a hard time wrapping my head around how a cell detects a far off disturbance (or antigens), and orients itself to move in that direction. How are they able to do this?

An explanation based in chemistry/biochemistry would be preferred, but biological mechanisms are so complex that I understand if a chemical explanation is too complicated to explain.

submitted by /u/VeXedZenith
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Is there a physical Limitation on how dense we can store data on a HDD Platter?

Posted: 05 Nov 2021 05:48 PM PDT

Ok, from my understanding, correct me if im wrong, we are currently reaching the physical limitation of cpu transistors.

But what about good old HDD's? They seem to manage to cram more and more data onto 1 platter, but is there a phyical limitation on how much information we can store on 1 platter?

submitted by /u/offron1
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Do antibodies recover after long periods of extreme stress have ended ("recovery immunity")?

Posted: 05 Nov 2021 07:25 AM PDT

I have read that after vaccination or infection, there is a decrease in neutralizing antibodies (what I saw referred to as humoral immunity) after extreme stress.

The paper on it I found referred to something called "immunity recovery." But the paper said it was not aware whether antibodies returned after a period of extreme stress.

So my question is, if you were to get COVID or get vaccinated for COVID then have an extended period of seriously extreme day-in, day-out stress, but then recovered from the stress, would your body start making neutralizing antibodies again or does the stress kill them off permanently?

To clarify, this is referring to periods of extreme, long-term stress and the aftermath. Short-term stress from what I read appears to improve immune response.

submitted by /u/finestartlover
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What is the mechanism behind mie scattering in pores with similar diameters to wavelengths?

Posted: 05 Nov 2021 03:59 PM PDT

In porous materials, if the pores of the material have diameters roughly equivalent to that of the light waves entering into the material, the light will mie scatter and reflect away from that porous material.

My question is (without a lot of math) what is the mechanism exactly that causes the pore diameter to have this influence for mie scattering?

I know a bit about quantum electrodynamic reflection off of two interfaces (like an oil slick) and I'm wondering if something similar happens when the pores are the size of the wavelength. How does the pore diameter related to the lights interference to cause reflection/scattering?

submitted by /u/thejeran
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Since combining waves can by constructive interference amplify amplitudes, is it also possible to amplify (create higher) frequencies by combining beams or simmilar?

Posted: 05 Nov 2021 07:43 AM PDT

What are eye floaters?

Posted: 05 Nov 2021 06:08 AM PDT

How do topical medications like Advantage Multi get rid of internal parasites?

Posted: 05 Nov 2021 04:06 PM PDT

Title.

submitted by /u/IoGibbyoI
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Is deep cycling a Lithium Ion battery worse than keeping it at 100%?

Posted: 04 Nov 2021 08:35 AM PDT

I recently got a new phone, and its battery lasts around two days. I'm trying to maximize the lifespan of the battery, so is it better to charge it every night (going from around 50-100% daily) or every other night (going from around 20-100%, but half as often?)

submitted by /u/epicface2304
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Friday, November 5, 2021

Does sleep deprivation during teen years have permanent effects?

Does sleep deprivation during teen years have permanent effects?

Does sleep deprivation during teen years have permanent effects?

Posted: 04 Nov 2021 10:18 PM PDT

For 2 years between the ages of around 14-16 I got almost no sleep most nights, on average it was around 1-3 hours on school nights and 6-9 hours on weekends. I'm almost 17 now and working on getting better sleep but I'm wondering if that period had a permanent effect on my life. Is it possible that I have a permanent lower mental ability, height or health since my development was interrupted by this?

submitted by /u/FortnightDance
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What causes the sensation of one's "blood running cold"?

Posted: 04 Nov 2021 10:14 PM PDT

I got a call from my confused and hysterical girlfriend in the hospital last night, after she gave her head a good crack on the floor, falling down some stairs. The combination of SOMETHING being wrong, but NOT being able to tell me herself because of memory loss/confusion, made me experience the most novel sensation. The nape of my neck, down and around my shoulders, and some of my back and then down deep deep in my tummy, I simultaneously felt something like a bizarre cool icy stingy feeling. The phrase "my blood ran cold" suddenly made sense.

Is this side effect of some sort of hormonal stress response? Is it related to the "freeze" response in prey animals? Is the experience of this sensation universally similar?

submitted by /u/AcclimateToMind
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We are scientists from the Society of Vertebrate Paleontology coming to you from our annual meeting — which is virtual this year! We study fossils. Ask Us Anything!

Posted: 05 Nov 2021 04:31 AM PDT

Hi /r/AskScience! We are members of the Society of Vertebrate Paleontology, here for our 8th annual AMA. We study fossil fish, mammals, amphibians, and reptiles — anything with a backbone! Our research includes how these organisms lived, how they were affected by environmental change like a changing climate, how they're related, and much more. You can follow us on Twitter @SVP_vertpaleo.

Joining us today are:

Matt Borths, Ph.D. (/u/Chapalmalania) is the Curator of Fossils at the Duke Lemur Center at Duke University in Durham, NC. His research focuses on the evolution of carnivorous mammals and primates, especially in Africa and North America. He is also part of several teams working to network natural history collections. Dr. Borths co-produced the paleontology podcast series Past Time (www.pasttime.org).

Clint Boyd, Ph.D. (/u/PalaeoBoyd) is the Curator of the North Dakota State Fossil Collection and the Paleontology Program Manager for the North Dakota Geological Survey. His research focuses on the evolutionary history of ornithischian dinosaurs and studying Eocene and Oligocene faunae from the Great Plains region of North America. Find him on twitter @boydpaleo.

Stephanie Drumheller, Ph.D. (/u/UglyFossils) is a paleontologist at the University of Tennessee whose research focuses on the processes of fossilization, evolution, and biology, of crocodiles and their relatives, including identifying bite marks on fossils. Find her on Twitter @UglyFossils.

Mindy Householder (/u/mindles1308) is a fossil preparator with the State Historical Society of North Dakota. She has cleaned and repaired many fossil specimens for public museums and institutions over the past 18 years. Some well known specimens she worked on include "Jane" the juvenile Tyrannosaurus rex and "Dakota" the Edmontosaurus sp. fossilized natural mummy.

Josh Miller, Ph.D. (/u/PaleoJosh) is a paleoecologist and Assistant Professor at the University of Cincinnati. His research focuses on Pleistocene paleoecology, taphonomy, and using fossil and subfossil records to help conserve and manage modern ecosystems (Conservation Paleobiology). Find out more at JoshuaHMiller.com.

Jennifer Nestler, M.S. (/u/jnestler) is an ecologist who works on landscape-level modeling of coastal and wetland ecosystems. She also studies the morphology and ecology of fossil and modern crocodylians, and uses quantitative methods to inform conservation decisions.

Adam Pritchard, Ph.D. (/u/vertpaleoama) is the Assistant Curator of Paleontology at the Virginia Museum of Natural History in Martinsville, VA. His research focuses on the evolution of reptiles during the Permian and Triassic periods, a time of great change that saw the rise of the dinosaurs. Please check out the Virginia Museum of Natural History at vmnh.net. Dr. Pritchard has also co-produced the paleontology podcast series Past Time, available at www.pasttime.org.

Gabriel-Philip Santos, M.S. (/u/PaleoParadoX) is a paleontologist and educator at the Raymond M. Alf Museum of Paleontology in Los Angeles, California. His previous work focused on the paleontology of Southern California, particularly the evolution of marine mammals. Today, his research has shifted to education and DEI in STEM as a National Geographic certified educator and cofounder of the Cosplay for Science Initiative. He was recently named a Grosvenor Teacher Fellow with National Geographic and Lindblad Expeditions. You can find him online as @paleoparadox.

We will be back to answer questions starting around noon (Eastern Time/4 PM UTC) to answer your questions. See you soon!

submitted by /u/VertPaleoAMA
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Will the Appalachian mountains erode completely?

Posted: 04 Nov 2021 05:25 PM PDT

I've read that they could've been as high as the Himalayas, but the mountains dont have any more activity that keeps them from eroding, will they vanish completely in the future?

submitted by /u/Impressive-Car-9044
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Why are vaccines not sugar cubes anymore?

Posted: 04 Nov 2021 01:37 PM PDT

My daughter is about to get her COVID vaccine and she is wondering why does it have to be an injection and not a sugar cube (like back in the polio vaccine).

I wondered myself, was the sugar cube idea only possible for polio? Have other vaccines used that method? What are the benefits or detriments to delivering a vaccine via sugar cube?

submitted by /u/P-Albundia
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Does the air inside the wheel rotate with the wheel itself?

Posted: 04 Nov 2021 10:04 PM PDT

It's a simple question, but I really couldn't answer it.

submitted by /u/the_qazaq1
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What is a rescue group in research?

Posted: 04 Nov 2021 06:15 PM PDT

Hi I am critiquing a paper and they said that they are using different treatment groups, a control group, and a rescue group. What is a rescue group and what is it's purpose? The paper I am critiquing is linked in this post. article

submitted by /u/taljov123
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Where does the potential energy come from, in osmosis?

Posted: 04 Nov 2021 10:35 AM PDT

So, when osmosis happen the molecules of water move from one side of the semi-permeable membrane to the other, in some cases it moves in a vertically up direction, seemingly defying gravity and gaining potential energy. So, since potential energy cant just show up out without an instigating factor, due to that being a violation of the law of conservation of energy; Where does the potential energy come from ?

submitted by /u/FakelyKorean45
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How do you model a gas when P, V, and T can all vary simultaneously?

Posted: 04 Nov 2021 11:04 PM PDT

For example, if you take the Ideal Gas Law

PV = nRT

and adjust everything with a scaler to describe a percentage change in each variable,

(P * a)(V * b) = nR(T * c)

you aren't able to get an insight into how each variable is changing with respect to each other. (As V is decreased by a factor of b, what is happening to P and T? etc.)

My understanding is that the Ideal Gas Law requires one of these variables to remain constant to be applicable. If I want to see how dP, dV, and dT all change with respect to each other, what model should I be using?

submitted by /u/sgt-stutta
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[relativity of simultaneity] What does it mean to say that the light reaching us from e.g. Alpha Centauri was emitted 4.37 years ago?

Posted: 05 Nov 2021 12:40 AM PDT

My question has to do with the relativity of simultaneity. Was the light reaching me now emitted while I was sitting down for coffee exactly 4.37 years ago? The simultaneity of these two events depends on the observer. Is 4.37 a good-enough approximation for all humans on earth? How about aliens orbiting Alpha Centauri on their planet? Can they expect the light they emit to reach us after 4.37 years of their time? Is there an impartial observer that can time these events?

submitted by /u/isolli
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If a supermassive black hole (for example Sagittarius A*) consumes one hydrogen atom, how much this would increase black holes event horizon circumference?

Posted: 04 Nov 2021 03:53 PM PDT

Would this make black holes event horizon circumference increase at least one Planck length in size?

submitted by /u/ButterscotchNo2074
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Do fungi get infections/diseases?

Posted: 03 Nov 2021 08:17 PM PDT

We know that plants and animals can get diseases/infections (e.g., from pathogenic bacteria, viruses, fungi, etc.), and bacteria themselves can also be infected by viruses. My question is whether fungi are susceptible to "infection" (however that may be defined), and if so, what the causal organisms (or non-organisms) might be.

submitted by /u/adagietto
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What is the chemical difference between dry erase markers, permanent markers, and tattoo ink?

Posted: 03 Nov 2021 07:05 PM PDT

What makes tattoo ink so permanent? What makes dry erase markers so not permanent? I know the dry erase markers has a solvent with a very low boiling point so it dries quickly but why does that make it eraseable compared to a sharpie?

submitted by /u/jackyman12
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