Is the Chernobyl core still melting to this day?

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• Is the Chernobyl core still melting to this day?
• Why does the immune system take so long (years) to defeat the HPV virus?
• Is getting tongue-tied a very minor form of aphasia, or are the causes completely different?
• Why are earthquakes displayed as a single epicentre when, in truth, they are usually a rip along kilometres of faultline (why not display as a wiggly line instead)?
• The Higgs field is said to have imaginary mass. What does this mean, and how does it differ from regular mass?
• Ask Anything Wednesday - Engineering, Mathematics, Computer Science
• Why do soybeans curd? Why don't other legumes curd?
• seismologist (earth quake scientists) can I ask a question about the earth quake in Melbourne Australia today?
• How do radioactive isotopes still exist in nature?
• Has there ever been a lifelong case of anterograde amnesia?
• do superfluids make good superconductors?
• Does the moon reflect heat?
• Why do dogs only need one rabies shot, but humans need multiple?

Is the Chernobyl core still melting to this day? Posted: 21 Sep 2021 03:36 PM PDT submitted by /u/knut_2 [link] [comments]

Why does the immune system take so long (years) to defeat the HPV virus? Posted: 21 Sep 2021 10:07 AM PDT I have a limited understanding of medicine. It seems to me however that the immune system is typically able to deal with viral infections within a few weeks to months depending on type and severity. However HPV virus sometime takes years to defeat. submitted by /u/COMRADE_WALRUS [link] [comments]

Is getting tongue-tied a very minor form of aphasia, or are the causes completely different? Posted: 21 Sep 2021 07:53 AM PDT submitted by /u/EdominoH [link] [comments]

Why are earthquakes displayed as a single epicentre when, in truth, they are usually a rip along kilometres of faultline (why not display as a wiggly line instead)? Posted: 22 Sep 2021 02:25 AM PDT submitted by /u/million44wildy [link] [comments]

The Higgs field is said to have imaginary mass. What does this mean, and how does it differ from regular mass? Posted: 22 Sep 2021 06:01 AM PDT submitted by /u/NooaJ [link] [comments]

Ask Anything Wednesday - Engineering, Mathematics, Computer Science Posted: 22 Sep 2021 07:00 AM PDT Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Engineering, Mathematics, Computer Science Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for a typical /r/AskScience post? No question is too big or small for AAW. In this thread you can ask any science-related question! Things like: "What would happen if...", "How will the future...", "If all the rules for 'X' were different...", "Why does my...". Asking Questions: Please post your question as a top-level response to this, and our team of panellists will be here to answer and discuss your questions. The other topic areas will appear in future Ask Anything Wednesdays, so if you have other questions not covered by this weeks theme please either hold on to it until those topics come around, or go and post over in our sister subreddit /r/AskScienceDiscussion , where every day is Ask Anything Wednesday! Off-theme questions in this post will be removed to try and keep the thread a manageable size for both our readers and panellists. Answering Questions: Please only answer a posted question if you are an expert in the field. The full guidelines for posting responses in AskScience can be found here. In short, this is a moderated subreddit, and responses which do not meet our quality guidelines will be removed. Remember, peer reviewed sources are always appreciated, and anecdotes are absolutely not appropriate. In general if your answer begins with 'I think', or 'I've heard', then it's not suitable for /r/AskScience. If you would like to become a member of the AskScience panel, please refer to the information provided here. Past AskAnythingWednesday posts can be found here. Ask away! submitted by /u/AutoModerator [link] [comments]

Why do soybeans curd? Why don't other legumes curd? Posted: 22 Sep 2021 08:05 AM PDT I was looking for alternatives for making tofu. My grocery store doesn't have soybeans. All the alternative legumes are made into a milk, reduced to a paste, and then chilled. Tofu is made like mozzarella (when using unpasteurized milk). Only soybeans can be curdled with vinegar. Why? submitted by /u/funnameidea [link] [comments]

seismologist (earth quake scientists) can I ask a question about the earth quake in Melbourne Australia today? Posted: 22 Sep 2021 04:04 AM PDT I'm quite disturbed my city experienced such a high magnitude earthquake at 6.0 today. Luckily not much damage occurred but 6.0 for Melbourne is very very unusual and I'm wondering why it happened. One question that I really want answered is The massive earthquake which struck Christchurch NZ in 2011 was a magnitude of 6.2 and that was a total disaster. So what I'm saying is their was a 0.2x difference between our earthquakes but our damage was no where as bad. Our epicentre was in Mansfield which is a country town so it was a couple of hours away from the city (185km) But if our epicentre was in the city would that have caused much more damage? Such as Christ church. Sorry I'm just really confused and worried it will happen again but in the city submitted by /u/Jezzi89 [link] [comments]

How do radioactive isotopes still exist in nature? Posted: 21 Sep 2021 11:06 PM PDT Mostly just wondering how they haven't all completely decayed. Also at some point in the future will natural radioactive isotopes no longer exist on earth? submitted by /u/Chemicalenrapture [link] [comments]

Has there ever been a lifelong case of anterograde amnesia? Posted: 21 Sep 2021 06:17 PM PDT Has there ever been an instance of someone never developing the ability to form memories, either due to the necessary parts of the brain not developing or an amnesia-causing event? submitted by /u/AlbatrossAirline [link] [comments]

do superfluids make good superconductors? Posted: 21 Sep 2021 11:22 PM PDT submitted by /u/aliendude369 [link] [comments]

Does the moon reflect heat? Posted: 21 Sep 2021 12:42 PM PDT If light and heat are types of radiation and the moon reflects light maybe its possible, also is a full moon night warmer than a new moon one? submitted by /u/chramtor [link] [comments]

Why do dogs only need one rabies shot, but humans need multiple? Posted: 21 Sep 2021 01:12 PM PDT Why do dogs just get a single rabies shot and that's considered good enough, but for human rabies PrEP three shots are required? I've never heard anyone say that dogs need a booster shot after being in a fight or bitten by a wild animal, but even if you have rabies PrEP, and it's been less than two years, humans are supposed to get two booster shots if they are bitten by a suspected rabid animal. Maybe dogs are supposed to get booster shots after fighting or being bitten by a wild animal and I never got the memo? submitted by /u/Turbulent-Strategy83 [link] [comments]

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If you had a frictionless rope, would you be able to tie knots in it that would hold? Are there some knots that would hold and others that wouldn't?

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• If you had a frictionless rope, would you be able to tie knots in it that would hold? Are there some knots that would hold and others that wouldn't?
• How can supernova remnants become "static" in a region of space?
• How can photons colliding create mass through pair production if they have no mass themself?
• Where did all our nipples go? Did we ever have them at all? How many nipples did our evolutionary ancestors have?
• Is local water hardness affected by wet/dry seasons in the area?
• How are non-comedogenic skin products non-comedogenic?
• Can cancer happen in any organ?
• Are most Hypergiant stars already dead?
• Difference between dendritic cell vaccines and peptide vaccines?
• How do guanine nucleotide-binding proteins effect collagen and mast cells?
• If the Covid vaccine is approved for kids, would the dosage for a large 11 year old be the same as the one for a small 5 year old?
• Are electrons which share the same orbital more likely to be found near or away from each other?
• Long non-coding RNAs and open reading frames?
• When a pregnant woman gets vaccinated, does the vaccine make its way into the unborn fetus and build up its immune system in much of the same way as its mother?
• What is "Mango Tango" in carbon nanotube research?

If you had a frictionless rope, would you be able to tie knots in it that would hold? Are there some knots that would hold and others that wouldn't? Posted: 20 Sep 2021 04:36 PM PDT submitted by /u/Adventurous_Union_85 [link] [comments]

How can supernova remnants become "static" in a region of space? Posted: 21 Sep 2021 05:37 AM PDT ​ Aren't supernovas ultra-hyper-super-powerful explosions? The debris from the explosion was supposed to expand onto a sphere surface at stupidly high speeds. So they should spread across the universe in order to isolate themselves more and more. But apparently our solar system formed in a molecular cloud that contained many heavy elements, which came from supernovae. This cloud, apparently, is analogous to clouds we have on earth, only less dense. It would be "static" in a region of space. But that seems too weird to me. How can this be possible? submitted by /u/ItsTimeToFinishThis [link] [comments]

How can photons colliding create mass through pair production if they have no mass themself? Posted: 21 Sep 2021 06:21 AM PDT I have been reading into pair production and I was wondering where the mass came from. Thank you for your help! submitted by /u/EmmBarr [link] [comments]

Where did all our nipples go? Did we ever have them at all? How many nipples did our evolutionary ancestors have? Posted: 20 Sep 2021 06:51 PM PDT I can't help but notice a lot of mammals have more nipples than we do. I understand that we don't need more nipples because we don't have as many offspring as some animals, but how did that work evolutionarily? Did we come from a common ancestor that had 6 nipples and we lost them along the way? Or did lots of mammals evolve lots of nipples independently? submitted by /u/mousatouille [link] [comments]

Is local water hardness affected by wet/dry seasons in the area? Posted: 21 Sep 2021 01:59 AM PDT Random thing I just thought of. Is the water table in an area diluted enough from rain to make a difference in hardness? Or would it make the water in the ground more likely to take on minerals? submitted by /u/wowcows [link] [comments]

How are non-comedogenic skin products non-comedogenic? Posted: 20 Sep 2021 08:46 PM PDT Non-comedogenic skin products promise not to block your pores. How can a formula containing dozens of different compounds, not all volatile, not block your pores once slathered all over them? They surely can't all be absorbed by the body either, as in many cases (such as in a moisturizer), a long-lasting protective layer is the point itself. So how can these products accomplish what's promised of them, chemically/mechanically? submitted by /u/iwilleatit [link] [comments]

Can cancer happen in any organ? Posted: 20 Sep 2021 12:41 PM PDT I've never heard of renal cancer or heart cancer or bladder cancer, but is that just because they're incredibly rare? submitted by /u/acquavaa [link] [comments]

Are most Hypergiant stars already dead? Posted: 20 Sep 2021 01:43 PM PDT Got a question are most Hypergiant stars already dead? Due to the fact they only live for millions of years. Or are hypergiants still being created? Second question is it safe to say most of the visible/ observed Hypergaints we know such as UY Scuti, and Canis Majoris have died now? Apologies for the stupid question but i was struggerling to find an answer on google for this, as it only pertains to blue giants of the largest type. Most questions similar are around stars in general meaning all sizes which means they can live for billions of years, but mine is only about the hypergiants that are noted to have much shorter lifespans of millions of years. taking into account the distance light has to travel and their relative shorter lives i thought its worth a go asking. submitted by /u/onyxhaider [link] [comments]

Difference between dendritic cell vaccines and peptide vaccines? Posted: 20 Sep 2021 09:19 AM PDT I'm the caregiver for someone on a clinical trial involving dendritic cell vaccine. After doing some research into past trials, I've noticed that the ones with dendritic cell vaccines seem to produce better results than the ones using peptide vaccines (even when the antigen is the same). Is there a reason why this could be the case? Is there any settled science about the difference between the two vaccine approaches? submitted by /u/moisthanky [link] [comments]

How do guanine nucleotide-binding proteins effect collagen and mast cells? Posted: 20 Sep 2021 08:30 PM PDT submitted by /u/taurealis [link] [comments]

If the Covid vaccine is approved for kids, would the dosage for a large 11 year old be the same as the one for a small 5 year old? Posted: 20 Sep 2021 04:01 PM PDT My understanding is that the kids version of the Covid vaccine would be a much smaller dose than the one adults receive. When I was younger, my doctor told my mother that (despite my age) I could take the full adult dose of ibuprofen because of my height and weight. Do vaccines work the same? I've worked in schools with sixth graders who looked like they could be in high school. Would a 5 year old get the same dosage as an 11 year old who's 5'4 and 150lbs? They have the mass of an adult, so would they still be given the kids dosage? Would they be more prone to contract Covid as a result? submitted by /u/righteousndignation [link] [comments]

Are electrons which share the same orbital more likely to be found near or away from each other? Posted: 20 Sep 2021 07:32 AM PDT submitted by /u/ch1214ch [link] [comments]

Long non-coding RNAs and open reading frames? Posted: 20 Sep 2021 01:12 PM PDT Does anyone know why long non coding RNAs have open reading frames even though they don't code for proteins? submitted by /u/Zz22zz22 [link] [comments]

When a pregnant woman gets vaccinated, does the vaccine make its way into the unborn fetus and build up its immune system in much of the same way as its mother? Posted: 20 Sep 2021 08:57 AM PDT Like, I keep hearing stories about how we don't have vaccines for children under twelve yet, at least not until this fall, and even then, for children between the ages of five and twelve. And it's because of that, it makes me think about how any children under the age of five, or even during infancy would be able to get the vaccine themselves. So I'm wondering if unborn infants growing in utero will get vaccinated any time their mother gets vaccinated while pregnant with them. submitted by /u/Commander_PonyShep [link] [comments]

What is "Mango Tango" in carbon nanotube research? Posted: 19 Sep 2021 10:05 PM PDT I have been reading up on the processes around the manufacturing of carbon nano tubes. I've seen separate articles from MIT and Yale referencing a "home-built setup, a.k.a. Mango Tango" for their oxygen dehydrogenation reaction. What the heck is a Mango Tango setup? Edit, the articles didn't have any clear references to this setup either. submitted by /u/Wyattwic [link] [comments]

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Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States

Can lightning really crack rocks and damage mountains like we see in fiction?

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• Can lightning really crack rocks and damage mountains like we see in fiction?
• Re the current volcanic eruption of La Palma, and the earthquakes there, what is the actual likelihood of a landslide and subsequent tsunamis?
• Has anyone ever proposed a more systematic approach to classifying minerals?
• A question for volcanologists: what is the difference between a Peléan and Plinian eruption?
• New geography teacher here: Our textbook says that the inner core of the earth is solid, the outer core liquid, the inner mantle solid, and parts of the outer mantle liquid. How does this happen? Why doesn’t the part of the mantle nearest the core melt more than the outer part?
• Geology (and some astronomy) question: Why do we find elements and compounds in veins and generally clumped together in the earth?
• What makes us age at the cellular level?
• Is the ozone hole over Antarctica generally getting smaller or larger?
• What are the odds of myocarditis from the 2nd dose of a mRNA vaccine?
• How does heritability work exactly?
• Is the heat capacity of a molecule directly related to its possible quantum states?
• If a plant grows larger every year, but with approximately the same amount of sunlight, how do the larger versions of the plant get enough energy during darker times of year?
• How do surgeons remove an entire tumor without leaving microscopic pieces/cells which can cause a relapse?

Can lightning really crack rocks and damage mountains like we see in fiction? Posted: 19 Sep 2021 01:18 PM PDT In fiction we usually see lightning as an incredible force capable of splintering stones, like a TNT charge would. Does this actually happen in nature? submitted by /u/RedditLloyd [link] [comments]

Re the current volcanic eruption of La Palma, and the earthquakes there, what is the actual likelihood of a landslide and subsequent tsunamis? Posted: 19 Sep 2021 05:27 PM PDT Should we be worried? submitted by /u/SquiddyJohnson [link] [comments]

Has anyone ever proposed a more systematic approach to classifying minerals? Posted: 20 Sep 2021 07:00 AM PDT In chemistry we somtimes have convenient, arbitrary names where useful ("water" instead of "dihydrogen monoxide") but always a predictable scientific name that describes what the compound actually is (e.g.: "dihydrogen monoxide" = two hydrogens and one oxygen). I can't claim to be smart enough to provide a better naming system for minerals, but surely the best possible naming system isn't "we give an arbitrary name to every possible chemical variation in every possible crystal lattice?" Has anyone ever proposed a more consistent system for identifying minerals? If so, how did their systems work? Thanks! submitted by /u/wabalaba1 [link] [comments]

A question for volcanologists: what is the difference between a Peléan and Plinian eruption? Posted: 20 Sep 2021 05:36 AM PDT From my own research into the question, i understand that Peléan eruptions are characterized by the presence of pyroclastic flows, but don't Plinian eruptions also produce pyroclastic flows as well? Does the height of the ash cloud or eruption column dictate how the eruption is classified? By this same token, what is the difference between a strombolian and vulcanian eruption? submitted by /u/Skiracer6 [link] [comments]

New geography teacher here: Our textbook says that the inner core of the earth is solid, the outer core liquid, the inner mantle solid, and parts of the outer mantle liquid. How does this happen? Why doesn’t the part of the mantle nearest the core melt more than the outer part? Posted: 19 Sep 2021 07:39 PM PDT submitted by /u/windoverhill [link] [comments]

Geology (and some astronomy) question: Why do we find elements and compounds in veins and generally clumped together in the earth? Posted: 19 Sep 2021 11:39 AM PDT Most heavier elements are formed in supernova explosions and float through space as dust until they are coalesced into planets. Does dust of the same element just generally form together and stays close together and so eventually it ends up either clumped up in a single deposit? Or do elements of the same variety have a method of attracting each other in space? Or does the earth have a method of refining these materials where plate tectonics and such make materials of similar masses clump up? Essentially I am asking how do heavy elements go from dust in space surrounded by tons of different types of dust to a lump of platinum or uranium in the ground? submitted by /u/Alphabunsquad [link] [comments]

What makes us age at the cellular level? Posted: 19 Sep 2021 07:56 AM PDT As far as I understand aging occurrs when cells replicate but do so imperfectly and over time these imperfections add up. To me there has to be more than this as alot of times we age in similar ways as our parents which isn't explained by random imperfections in cell replication over time. As a side question, how does a cell know when it has reached a certain age to trigger a difference (for example how do the relevant cells in our body know we're hitting puberty? ) submitted by /u/thetruedarknight [link] [comments]

Is the ozone hole over Antarctica generally getting smaller or larger? Posted: 20 Sep 2021 01:29 AM PDT I am confused as some newspapers are reporting that it has grown larger than Antarctica but I thought that the CFC ban would actually reverse ozone depletion. submitted by /u/wherz_patil [link] [comments]

What are the odds of myocarditis from the 2nd dose of a mRNA vaccine? Posted: 19 Sep 2021 12:18 PM PDT submitted by /u/The_Beatle_Gunner [link] [comments]

How does heritability work exactly? Posted: 19 Sep 2021 08:50 AM PDT Suppose we consider Bipolar disorder. This study cites 89% heritability with 95% confidence. Wikipedia also said bipolar disorder occurs in approximately 1% of the population. Let's assume A person is diagnosed with BPD. What is the chance that A's child has BPD (not factoring in environmental factors)? Does the 89% heritability mean theres a 89% chance? Or is there a 1% chance? Or is it completely different? could someone please explain what heritability is? The Wikipedia page was surprisingly too complicated for me to understand. I think its probably possible to find an answer to this question by reading a few more studies, but I think it would be better if someone could dumb it down for me. Sorry for the inconvenience and thank you in advance. submitted by /u/Netherquark [link] [comments]

Is the heat capacity of a molecule directly related to its possible quantum states? Posted: 19 Sep 2021 05:06 PM PDT submitted by /u/37litebluesheep [link] [comments]

If a plant grows larger every year, but with approximately the same amount of sunlight, how do the larger versions of the plant get enough energy during darker times of year? Posted: 19 Sep 2021 01:45 AM PDT Is it surplus energy stored in the the tree from sunnier times that allow the plant to perform maintenance and survive in the darker times? Or is it perhaps a dormancy in darker times that uses just enough energy to survive no matter how large the plant is? submitted by /u/creative1love [link] [comments]

How do surgeons remove an entire tumor without leaving microscopic pieces/cells which can cause a relapse? Posted: 18 Sep 2021 03:13 PM PDT submitted by /u/CultOfTheDemonicDoge [link] [comments]

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Is the uncertainty principle basically because at that level, to measure the system you have to interfere with the system somehow?

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• Is the uncertainty principle basically because at that level, to measure the system you have to interfere with the system somehow?
• Is the physiological process of falling asleep due to boredom the same as falling asleep due to tiredness?
• Does the abundance of plants that have embryonic leaves mean that plants (dicotyledons especially) have inherited this trait from a common ancestor? or is this likely convergent evolution?
• Any update on theories on how will universe end?
• Is every star part of a galaxy?
• Since vacuum cleaners operate by creating a pressure differential between the atmospheric pressure and the internal pressure. Does that mean vacuum cleaners operate less efficiently at higher altitudes?
• Why does fuel not burn below or above a certain fuel-air ratio? If you keep reducing the ratio of fuel to air, at a certain point it will no longer combust. The same thing happens if you increase the fuel too much without adding any more air - it will eventually stop combusting. WHY?
• Why does diesel fuel use compression ignition and why do diesel engines have such low RPMs?
• Is there any science behind Psychometrics for filtering job candidates?
• How is a (returning) flu season impacting a Delta coronavirus wave in a given country?
• On USGS DYFI maps, how plausible is it that people are feeling M4.3 earthquakes almost a thousand miles away?
• why did we need 5 petabytes of data to take an image of a black hole?
• What's under Antarctica? is there water under it? on top of that the if the ice melts will it relase preserved ancient species?
• If wee breathe steamy air, do those water accumulate in lung?
• Guilin Karst is a famous example of limestone mountains. Do limestone mountains occur elsewhere in the world? If not, why not?

Is the uncertainty principle basically because at that level, to measure the system you have to interfere with the system somehow? Posted: 19 Sep 2021 04:13 AM PDT Basically my question boils down to the fact that to me at least it seems to intuitively make sense that the quantum scale makes measurement hard but I don't see many people talk about it like this and I'm wondering if I've managed to get the wrong end of the stick. Like if I want to measure a javelin in flight I can use video. There are a crap ton of photons bouncing off it all the time that allow me to see where it is, I record these over multiple frames and bam I've got both where it is and where it is going, easy. Now if we try that same thing again where I'm trying to measure a photon in flight, well now if I was in a well lit stadium like for the javelin, it would seem to me at least to be a bit like trying to measure a snooker ball with another snooker ball with billions of other snooker balls flying around. Suddenly when you think about it like that then the idea that if I carefully created a lattice of photons with a corresponding detector then if one of the corresponding detectors didn't end up receiving its photon we could say hey I know it was there but seeing as I've blasted it with another photon, I have no clue where it is now. Given this complexity (if I've even got it half right) it seems to me at least like most explanations of quantum experiments at least at the undergrad level don't really talk about the mechanics of measurement or observation and so it all sounds a lot more spooky and without those bits of info it's harder for people to reason about. Like the uncertainty principle sounds crazy until you start thinking that the only way to measure is to collide. Now I realise that even the term collide is potentially a massive over simplification of the interaction of forces at the particle level but I hope it conveys what I see as the problem. So yeah I had what felt like a flash of insight into what all the the uncertainty principle was explaining but then it seems weird that we just talk about experiments in simplified terms like observation, wave function collapse and kind of avoid talking about what they even mean by that and how they accomplish that. I mean I get that the maths behind quantum mechanics explains what we observe but I mean more about the experimental methods we use to confirm the maths and how we observe the quantum level from a macro level. So the crux of the question is twofold: Is the uncertainty principle basically because at that level, to measure the system you have to interfere with the system somehow? If that is correct, then it seems like the way we are taught about the experimental proof is very light on how we interfere with quantum scale stuff to try and measure them and I'd love pointers to good science explainer that go into a good level of detail on this Thanks! submitted by /u/_DarthBob_ [link] [comments]

Is the physiological process of falling asleep due to boredom the same as falling asleep due to tiredness? Posted: 18 Sep 2021 08:29 AM PDT submitted by /u/puffybunion [link] [comments]

Does the abundance of plants that have embryonic leaves mean that plants (dicotyledons especially) have inherited this trait from a common ancestor? or is this likely convergent evolution? Posted: 18 Sep 2021 08:42 AM PDT Thanks in advance for your time :) submitted by /u/Beryllium_Nitrogen [link] [comments]

Any update on theories on how will universe end? Posted: 19 Sep 2021 01:52 AM PDT In an "askreddit" thread on what will happen after death, someone did post an insightful quote on how our atoms will be here forever, and this leads me to reflect on the few theories I did read here and around the internet on the end of the Universe, mostly about the so called "heat death". When looking around in this sub, I did realize that the few threads on the matter are few years old, and I was wondering if more recent studies did change our perspective, or maybe made more solid one of the few theories. Thanks for any reply. submitted by /u/w00dblad3 [link] [comments]

Is every star part of a galaxy? Posted: 18 Sep 2021 03:47 PM PDT submitted by /u/icecap1 [link] [comments]

Since vacuum cleaners operate by creating a pressure differential between the atmospheric pressure and the internal pressure. Does that mean vacuum cleaners operate less efficiently at higher altitudes? Posted: 18 Sep 2021 11:47 AM PDT submitted by /u/nichdos [link] [comments]

Why does fuel not burn below or above a certain fuel-air ratio? If you keep reducing the ratio of fuel to air, at a certain point it will no longer combust. The same thing happens if you increase the fuel too much without adding any more air - it will eventually stop combusting. WHY? Posted: 18 Sep 2021 11:52 PM PDT for example, for hydrogen gas, it's wikipedia states that it combusts with air when it's between 4% H2 in air, and 75% H2 in air. Higher or lower, and it no longer burns. I don't understand why there wouldn't' at least be incomplete/partial combustion. submitted by /u/JustYourLocalDude [link] [comments]

Why does diesel fuel use compression ignition and why do diesel engines have such low RPMs? Posted: 18 Sep 2021 11:47 AM PDT I should clarify that I am aware of how engines work in general (intake, compression, ignition, exhaust etc). I don't need an explanation as to how an engine actually fires. I want to know what the properties of diesel are that allow it to use compression ignition instead of spark ignition. Why do the engines have such low RPMs? What is it about diesel that allows for it to create so much torque at such low speeds? submitted by /u/Slim_Thicc_Jesus [link] [comments]

Is there any science behind Psychometrics for filtering job candidates? Posted: 18 Sep 2021 06:03 AM PDT Psychometrics are the new biggest craze in the hiring process nowadays. They claim they can understand how you fit into the work culture and organization by assessing your "leadership", "emotional intelligence", "communication", "problem solving", and etc all through mini games. Is there any actual data or substantive research supporting these claims? submitted by /u/donutoffthefloor [link] [comments]

How is a (returning) flu season impacting a Delta coronavirus wave in a given country? Posted: 18 Sep 2021 12:54 PM PDT What are the implications if it comes sooner than the wave? What if during the wave? submitted by /u/seoreswandor [link] [comments]

On USGS DYFI maps, how plausible is it that people are feeling M4.3 earthquakes almost a thousand miles away? Posted: 18 Sep 2021 06:54 AM PDT Often times I'll be looking at an earthquake report and reading the Did You Feel It responses. For the M4.3 earthquake in LA last night, some people report feeling it in Santa Rosa, or even in Salt Lake City, which are all 400-600* miles away. Is this plausible scientifically? submitted by /u/LittleBitGhengisKhan [link] [comments]

why did we need 5 petabytes of data to take an image of a black hole? Posted: 17 Sep 2021 10:27 PM PDT submitted by /u/enderman_1 [link] [comments]

What's under Antarctica? is there water under it? on top of that the if the ice melts will it relase preserved ancient species? Posted: 17 Sep 2021 07:32 PM PDT submitted by /u/Noodles_2z [link] [comments]

If wee breathe steamy air, do those water accumulate in lung? Posted: 18 Sep 2021 01:35 AM PDT submitted by /u/Anarchist_Monarch [link] [comments]

Guilin Karst is a famous example of limestone mountains. Do limestone mountains occur elsewhere in the world? If not, why not? Posted: 17 Sep 2021 08:17 PM PDT Google says that limestone occurs under marine water, but I've never heard of limestone mountains anywhere else? Am I misunderstanding? submitted by /u/SleepyinStardew [link] [comments]

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