In space, two pieces of metal of the same type will "cold weld" if they touch. Why does this happen, and what do space agencies do to avoid or prevent this?

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• In space, two pieces of metal of the same type will "cold weld" if they touch. Why does this happen, and what do space agencies do to avoid or prevent this?
• AskScience AMA Series: We're marine scientists exploring the deep sea off Cabo Verde sailing on board the iMirabilis2 cruise. Ask us Anything!
• Why are the mirrors of the James Webb telescope yellow?
• Does exposure to COVID-19 after vaccination extend the immunity received from the vaccine?
• When the LHC first started the beams had 3.5TeV per beam but the heaviest particle discovered is 173GeV. Since they're upgrading, does that mean no new particles have been found between 173GeV and 7TeV?
• Are there any patents on the covid vaccine or are all companies sharing "open source" tech at this point?
• What happens when you blue shift into a gamma ray so much that it should turn into a particle anti particle pair?
• Are venomous snakes born venomous?
• How much similar (or dissimilar) is the mechanism of "immunity - development" in the human body, caused via a 'natural infection' and an 'whole-virus type Inactivated vaccine'?
• Arc length: linear vs curved ?
• How do kernel programmers access software interrupts while writing code in C?
• Can cold temperature negatively affect a magnets strength/performance? If so how? Are those effects permanent?
• Are there any other pairs of diseases like sickle cell and malaria that have unexpected positive interactions?
• Do vaccines (in general) weaken your immune system for the days that your body is building antibodies?
• Does the coronavirus that causes COVID-19 have an isocahedral shape?
• How can we have anti-A and anti-B antibodies at birth (depending on our own blood type) but Rh- folks only develop anti-Rh antibodies after exposure?
• How do anticonvulsants work?
• What's the difference between a "regular" and a "massive" heart attack?
• I recently moved to Utah and was wondering why Lone Peak looks like it was smacked by a meteor? It looks like it has a giant crater!

In space, two pieces of metal of the same type will "cold weld" if they touch. Why does this happen, and what do space agencies do to avoid or prevent this? Posted: 26 Aug 2021 05:24 PM PDT submitted by /u/el_derrotado [link] [comments]

AskScience AMA Series: We're marine scientists exploring the deep sea off Cabo Verde sailing on board the iMirabilis2 cruise. Ask us Anything! Posted: 27 Aug 2021 04:00 AM PDT We are a team of scientists and technicians sailing on board the Spanish research vessel Sarmiento de Gamboa on a four-week cruise to explore Cabo Verde's deep sea ecosystems. On board we have the remotely operated vehicle (ROV), Luso, the autonomous underwater vehicle (AUV) Autosub6000, three benthic landers (a respirometer, baited camera, and baited trap), a multibeam bathymetry system, box corer, multicorer, a conductivity-temperature- depth (CTD) system, and the newly developed environmental DNA (eDNA) sampler named RoCSI (Robotic Cartridge Sampling Instrument). During the cruise we have used all this equipment to explore the deep sea through mapping, imaging, and sampling the seafloor and water column. We've seen cold-water corals, sponges, fish, sea cucumbers, anemones, mud and rocky substrate! This cruise is part of the EU Horizon 2020 project iAtlantic. You can read all about the cruise on our expedition website where you can meet the team, learn about our scientific missions and equipment on board as well as catch up with the latest news at the expedition blog. You can also follow us on Twitter, Facebook, and Instagram. We will be here from 17:00-19:00 UTC (1-3 PM ET) to answer your questions about scientific cruises, the deep sea, and ocean exploration. Username: /u/iAtlanticEU submitted by /u/AskScienceModerator [link] [comments]

Why are the mirrors of the James Webb telescope yellow? Posted: 26 Aug 2021 08:02 AM PDT submitted by /u/parralaxalice [link] [comments]

Does exposure to COVID-19 after vaccination extend the immunity received from the vaccine? Posted: 27 Aug 2021 06:39 AM PDT From what I understand, the immunity provided by vaccination lessens over time which is why a booster shot is going to be offered (at least for Pfizer). However, if a person who is vaccinated were to begin going out to public places a short time after receiving the vaccine in such a way that they are regularly exposed to the virus but not necessarily infected, would this preserve the immunity received from the vaccine? submitted by /u/comdoriano [link] [comments]

When the LHC first started the beams had 3.5TeV per beam but the heaviest particle discovered is 173GeV. Since they're upgrading, does that mean no new particles have been found between 173GeV and 7TeV? Posted: 27 Aug 2021 04:13 AM PDT submitted by /u/ThePigDot_26 [link] [comments]

Are there any patents on the covid vaccine or are all companies sharing "open source" tech at this point? Posted: 26 Aug 2021 06:16 PM PDT submitted by /u/t0xicmarie [link] [comments]

What happens when you blue shift into a gamma ray so much that it should turn into a particle anti particle pair? Posted: 26 Aug 2021 05:05 PM PDT I was wondering what would happen in a scenario like this. Once a photon gets enough energy it turns into a matter antimatter particle pair, and when you move in the direction of something that ejected a photon, that photon blue shifts for you to keep the speed of light constant, gaining energy. So what would happen? How could it be a particle pair relative to you, but a photon to an outside observer? submitted by /u/Potatoboiv2 [link] [comments]

Are venomous snakes born venomous? Posted: 26 Aug 2021 02:09 PM PDT I was wondering if a newly hatched cobra would be venomous, or does it take time. Do they need their fangs to form first? Do they become venomous after going through snake puberty? submitted by /u/Bobby_-_D [link] [comments]

How much similar (or dissimilar) is the mechanism of "immunity - development" in the human body, caused via a 'natural infection' and an 'whole-virus type Inactivated vaccine'? Posted: 27 Aug 2021 12:08 AM PDT submitted by /u/nimitpathak51 [link] [comments]

Arc length: linear vs curved ? Posted: 26 Aug 2021 02:08 PM PDT Regarding the Crinkle crankle wall, Is it true that it uses a less number of bricks compared to standard linear brick wall? If I consider a brick wall ranging from x=0 to x=2\pi, the arc length, L, I'd get for the two cases would be Linear : L = 2\pi = 6.2832... Sinusoidal curved : L = 4\sqrt(2)E(1/2) = 7.6404... ; where E(m) is the elliptic integral --- Curiosity, driven by a simple problem coupled with insightful discussions on math stack exchange. P.S I really wanted to typeset math here, but I am struggling to do so... Thank you submitted by /u/kedarsb [link] [comments]

How do kernel programmers access software interrupts while writing code in C? Posted: 26 Aug 2021 06:56 PM PDT Additionally, is there any mechanism in place to prevent someone from writing an ordinary program that, when compiled and run in user mode, prevents it from hijacking this same functionality and entering kernel mode? submitted by /u/The_Drunk_Dutchess [link] [comments]

Can cold temperature negatively affect a magnets strength/performance? If so how? Are those effects permanent? Posted: 26 Aug 2021 03:08 PM PDT Hi all! I just found this site, that states Ferrite-Magnets must not get colder than -40 C. I can't find any explanation for this online. One site I found briefly mentioned something about electron spins being affected at low temperatures, weakening magnets, but that's all I could find. I understand how heat affects them, at least good enough to be content, but I can't wrap my head around how cold could have a negative effect. Thanks for anyone wo read my question and thanks in advance for any answers. submitted by /u/GiantClaw [link] [comments]

Are there any other pairs of diseases like sickle cell and malaria that have unexpected positive interactions? Posted: 26 Aug 2021 07:57 AM PDT "Positive" for lack of a better word, I realize sickle cell is a horrible disease to have that kills infants and young children but confers some resistance to malaria. Are there any other genetic problems or diseases that end up helping against other diseases? submitted by /u/pupperonipizzapie [link] [comments]

Do vaccines (in general) weaken your immune system for the days that your body is building antibodies? Posted: 26 Aug 2021 08:56 AM PDT This has nothing to do with the big C, just a question. What I mean is, is it easier to catch a cold etc. the days after a vaccine? submitted by /u/Adorable-Chemist-444 [link] [comments]

Does the coronavirus that causes COVID-19 have an isocahedral shape? Posted: 26 Aug 2021 09:21 PM PDT submitted by /u/Frosty-Management633 [link] [comments]

How can we have anti-A and anti-B antibodies at birth (depending on our own blood type) but Rh- folks only develop anti-Rh antibodies after exposure? Posted: 26 Aug 2021 09:48 AM PDT submitted by /u/pomegranatevale [link] [comments]

How do anticonvulsants work? Posted: 26 Aug 2021 04:04 AM PDT I was wondering if someone could explain how medications function to stop seizures. Take for instance benzodiazepines such as Ativan and Midazolam. Do they work by slowing or stopping the seizing process in the actively convulsing body or is it that it slows down or stops the wonky misfiring in the brain that causes the body to have convulsions? Thanks so much :) An always curious ER nurse submitted by /u/StatisticianFine9452 [link] [comments]

What's the difference between a "regular" and a "massive" heart attack? Posted: 26 Aug 2021 01:46 AM PDT submitted by /u/FlyAfter2214 [link] [comments]

I recently moved to Utah and was wondering why Lone Peak looks like it was smacked by a meteor? It looks like it has a giant crater! Posted: 26 Aug 2021 12:02 AM PDT submitted by /u/LubricatedHeelys [link] [comments]

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Studies from 2003 in China, showed that 80% of the wild animals in the markets and 13-60% of traders with wild animals had SARS-Cov-1 antibodies indicating of larger spreading of the virus. Do we have similar early studies for SARS-Cov-2?

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• Studies from 2003 in China, showed that 80% of the wild animals in the markets and 13-60% of traders with wild animals had SARS-Cov-1 antibodies indicating of larger spreading of the virus. Do we have similar early studies for SARS-Cov-2?
• Why is gravity stronger in the ocean than on land?
• Does the moon, other planets experience earthquake?
• Does antibody response adapt with exposure to different Covid strains?
• Can volcanoes appear in cold areas of the world, and can they be a source of heat in any practical way?
• How long is the COVID-19 incubation period for vaccinated people?
• How do traits that don't give a species an advantage become a normal trait through evolution and the concept of survival of the fittest?
• Why Tuberculosis is still a major death cause if we have the vaccine?
• Is it possible to have high inflammation and low C-reactive protein?
• Is it known if Covid is able to infect through the eyes?
• How do plasmid vaccines work?
• What do non-integer orbital occupation values mean?
• Why are engines with more cylinders less efficient assuming the displacement + bore/stroke ratio are the same?
• Why do we use latin and greek root words for scientific vocabulary?

Studies from 2003 in China, showed that 80% of the wild animals in the markets and 13-60% of traders with wild animals had SARS-Cov-1 antibodies indicating of larger spreading of the virus. Do we have similar early studies for SARS-Cov-2? Posted: 25 Aug 2021 12:04 PM PDT https://pubmed.ncbi.nlm.nih.gov/15061910/ https://pubmed.ncbi.nlm.nih.gov/14561956/ https://pubmed.ncbi.nlm.nih.gov/15663874/ According to my limited understanding, this indicates that SARS-1 was spreading undetected earlier in those risk groups and had a chance to mutate. I can't find such studies for SARS-COV-2. Are there any? submitted by /u/2000p [link] [comments]

Why is gravity stronger in the ocean than on land? Posted: 26 Aug 2021 03:50 AM PDT This gravitational anomaly map shows that all of the oceans have more gravity than all of land. Is this because land is more elevated? Water is less dense than rock, so I would have assumed it would be the other way around. submitted by /u/997 [link] [comments]

Does the moon, other planets experience earthquake? Posted: 25 Aug 2021 10:35 PM PDT Someone asked a question in r/moon whether there are earthquakes on the moon and it made me wonder do other planets (it's moons also?) experience earthquakes? submitted by /u/aus_sidney [link] [comments]

Does antibody response adapt with exposure to different Covid strains? Posted: 26 Aug 2021 05:52 AM PDT If you recieved a Covid-19 vaccine, the vaccine generated antibody and T-cells to equip the immune system to respond to the alpha Covid-19 virus. In the case of the mRNA vaccines, it was really primed just toward the spike protein. If you are vaccinated and are exposed to a variant such as Delta, I understand that current vaccines have a high probability of attenuating illness. When this occurs, does your antibody response further adapt to be more efficient in warding off that variant in future exposures, or if it is good enough to work, does it remain unchanged? What exactly does or does not change? submitted by /u/rockjones [link] [comments]

Can volcanoes appear in cold areas of the world, and can they be a source of heat in any practical way? Posted: 25 Aug 2021 07:03 PM PDT Like a volcano in a cold country, would the volcano be warmer than the ground around it? I understand that when it erupts there would be a lot of heat lol submitted by /u/SleepyinStardew [link] [comments]

How long is the COVID-19 incubation period for vaccinated people? Posted: 25 Aug 2021 10:13 PM PDT Is it the same as unvaccinated people? I thought it might be shorter because of a faster immune response. I couldn't find any info about this. submitted by /u/monsieurpooh [link] [comments]

How do traits that don't give a species an advantage become a normal trait through evolution and the concept of survival of the fittest? Posted: 25 Aug 2021 04:51 PM PDT If I understand the "survival of the fittest" concept, random mutations occur causing a change in a species. Sometimes, those random mutations lead to a change that gives that species an advantage. That advantage allows that species to thrive and outlive other's of its kind. It provides offspring which is more likely to be born with that new trait as well. Over time, that species with that new trait becomes the "new normal". Simply put of course. All that said, if this is accurate, how do random mutations that don't really provide an advantage also become a "new normal"? For example (this is the specific topic that got me wondering about this, so if anyone can also address this specific example, it would be much appreciated!): Humans crying when they are sad. From what I have read, it is mostly believed that the purpose of this is simply to signal our emotions to others. I am having a hard time understanding how something like this becomes a normal trait. How did this give humans an advantage that helped to out last humans other humans that did not produce tears or the other physical actions/expressions that crying produces? There are of course many other examples of this. I am sure there is a simple answer. Can any of you more enlightened on the subject than I help me understand this, or what I am not understanding correctly about evolution/SOTF? submitted by /u/mostlyalurk [link] [comments]

Why Tuberculosis is still a major death cause if we have the vaccine? Posted: 25 Aug 2021 10:46 AM PDT I'm not an anti Vaxxer, without any doubt, but i don't understand, why are there so many deaths every year 1,4M in 2019) because of a disease that has a vaccine since almost 100 Years? Thanks! submitted by /u/Cobeeee [link] [comments]

Is it possible to have high inflammation and low C-reactive protein? Posted: 25 Aug 2021 11:04 AM PDT Or low inflammation and high CRP? Is CRP really *that* great of an inflammation marker? submitted by /u/inquilinekea [link] [comments]

Is it known if Covid is able to infect through the eyes? Posted: 25 Aug 2021 02:38 PM PDT submitted by /u/RecommendationKey163 [link] [comments]

How do plasmid vaccines work? Posted: 25 Aug 2021 02:04 PM PDT Specifically, how does the plasmid enter cells and what prompts the body to start expressing proteins from foreign DNA instead of trying to get rid of the foreign material? submitted by /u/nootfiend69 [link] [comments]

What do non-integer orbital occupation values mean? Posted: 25 Aug 2021 07:13 PM PDT computational chemistry can often spit out molecule structures that have decimal values in the calculated number of electrons occupying an orbital. What does this actually MEAN? Is it saying that an individual molecule is in some kind of "resonance" hybrid between two or more electron configurations? Or is it saying that in a sample of many molecules, those values are the *average* occupancies, but any given single molecule in the sample has either 0, 1 or 2 electrons in any given orbital? submitted by /u/SMM-123Sam [link] [comments]

Why are engines with more cylinders less efficient assuming the displacement + bore/stroke ratio are the same? Posted: 25 Aug 2021 09:15 AM PDT submitted by /u/Rallymastxr [link] [comments]

Why do we use latin and greek root words for scientific vocabulary? Posted: 25 Aug 2021 09:23 AM PDT Is it mostly a historical reason? Are there significant pragmatic reasons? submitted by /u/passed_tense [link] [comments]

You are subscribed to email updates from AskScience: Got Questions? Get Answers.. To stop receiving these emails, you may unsubscribe now.	Email delivery powered by Google
Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States

AskScience AMA Series: Hi, Reddit! I'm a critical care-related researcher, professor of medicine and doctor in the ICU. AMA about wellness, burnout and PTSD in healthcare professionals!

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• AskScience AMA Series: Hi, Reddit! I'm a critical care-related researcher, professor of medicine and doctor in the ICU. AMA about wellness, burnout and PTSD in healthcare professionals!
• How is the effectiveness of the vaccines ''waning''? Does your body just forget how to fight COVID? Does Delta kill all the cells that know how to deal with it?
• Why are there so many islands between Canada and Greenland? What natural process occurred to make that land formation?
• Since Titans atmosphere is mostly methane, what prevents the whole moon from detonating when hit by a meteor?
• Ask Anything Wednesday - Engineering, Mathematics, Computer Science
• Why is the Strait of Gibraltar so much deeper than the area surrounding it?
• Why don't we just digest harmful bacteria like salmonella instead of getting sick?
• Is the microbiome of one ear significantly different from the other?
• Was Edward Jenner’s vaccine better than variolation?
• If centrifugal force is a virtual force, then how does it cause any change?
• How did plants grow during the 2 million years of rain (aka carnian pluvial event)? Would the photosynthesis process have been affected by the clouds or is that stupid?
• How long are waves far out at sea?
• Is Focus/attentiveness measurable? If so how?
• What was Mars like during periods of high tilt?
• Does the type of sand matter for glass production?
• What if the human body doesn't have any T cell that can bind to a particular antigen?
• Determining the type of decay an isotope undergoes when it has multiple options?
• How does barometric pressure affect a hurricane’s intensity?
• What is the "Overlapping Map Theorem," or whatever it's really called?
• How much of the COVID-19 does it take to make one sick?
• What's the time line for antibody production after the third shot/third dose for the mrna covid vaccines?

AskScience AMA Series: Hi, Reddit! I'm a critical care-related researcher, professor of medicine and doctor in the ICU. AMA about wellness, burnout and PTSD in healthcare professionals! Posted: 25 Aug 2021 04:00 AM PDT Hello, Redditors! My name is Marc Moss, and for the last 20 years, I have been studying the effects of stress on critical care nurses and other healthcare professionals. I'm also a professor of medicine at the University of Colorado Anschutz Medical Campus, Head of the Division of Pulmonary Sciences and Critical Care Medicine at the University of Colorado School of Medicine and work as a critical care doctor. Earlier this year, my colleague Dr. Meredith Mealer and I were honored to receive the American Association of Critical Care Nurses (AACN) Pioneering Spirit Award for our work studying the effects of stress on nurses and creating interventions to increase resilience among healthcare workers. Among these interventions includes work at the Colorado Resiliency Arts Lab, a research consortium supported by the National Endowment for the Arts. We are striving to create a vibrant, collaborative creative arts therapy community that is committed to enhancing healthcare professional well-being and alleviating psychological stress in the workplace and beyond. While I've been studying healthcare-related burnout for many years, this last year and a half during the COVID-19 pandemic has been a war zone for our healthcare professionals. I have never been prouder of all of my colleagues and the amazing hospital employees that we work with on a daily basis. They are working long hours in difficult conditions, putting on and taking off protective equipment, while trying not to get sick themselves, or infect their families and children. You would be honored to witness their extraordinary and relentless efforts to care for our sickest patients. However the relentless stress is taking its toll on all of us. I am afraid that the next wave will "break our souls". In addition to critical care-related research, my research interests include identifying new treatment modalities for patients with the Acute Respiratory Distress Syndrome (ARDS) and exploring the diagnosis and treatment of neuromuscular dysfunction in critically ill patients who require mechanical ventilation. I will be on at 1pm ET (17 UT) to answer your questions, AMA! Additional Background: Head of the Division of Pulmonary Sciences and Critical Care Medicine at the CU Anschutz School of Medicine Program Director for the Education, Training, and Career Development Core of the Colorado Clinical Translational Sciences Institute (CCTSI) from 2008-2016 President of the American Thoracic Society from 2017-2018 Research Publications: The Cost of Caring: Emotion, Burnout and Psychological Distress in Critical Care Clinicians A Critical Care Societies Collaborative Statement: Burnout Syndrome in Critical Care Health-care Professionals. A Call for Action. Additional Information About My Work: Physician Burnout? It's an epidemic March 5, 2019 Burnout is rampant among doctors and nurses. Can the arts help? November 5, 2019 Research on Burnout Among Nurses Receives AACN Award April 4, 2021 As pandemic wanes, will burnout fuel exodus of Colorado health care workers? July 3, 2021 Username: /u/drmarcmoss submitted by /u/AskScienceModerator [link] [comments]

How is the effectiveness of the vaccines ''waning''? Does your body just forget how to fight COVID? Does Delta kill all the cells that know how to deal with it? Posted: 25 Aug 2021 04:47 AM PDT It's been bothering me and I just don't understand how it's rendering the vaccines ineffective and yet it reduces the symptoms of it still. submitted by /u/Pretty-Ad-1757 [link] [comments]

Why are there so many islands between Canada and Greenland? What natural process occurred to make that land formation? Posted: 24 Aug 2021 09:03 PM PDT submitted by /u/SleepyinStardew [link] [comments]

Since Titans atmosphere is mostly methane, what prevents the whole moon from detonating when hit by a meteor? Posted: 24 Aug 2021 07:54 PM PDT Is it only the lack of oxygen in the atmosphere? What if a comet with a high quantity of frozen oxygen were to impact Titan at high velocity? Basically what's the easiest way to detonate all that gas on Titan? Is it even possible? submitted by /u/Hannover2k [link] [comments]

Ask Anything Wednesday - Engineering, Mathematics, Computer Science Posted: 25 Aug 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 is the Strait of Gibraltar so much deeper than the area surrounding it? Posted: 24 Aug 2021 08:43 PM PDT I couldn't find a reliable answer online and I am not sure if this counts as science, but I'm curious to why the Strait of Gibraltar is so deep in such a specific spot in the world. submitted by /u/NickElf977 [link] [comments]

Why don't we just digest harmful bacteria like salmonella instead of getting sick? Posted: 25 Aug 2021 06:31 AM PDT Salmonellosis is from bacteria. Bacteria are built from some of the same basic components as multicellular organisms, which we break down with specialized enzymes along the digestive tract. But ingesting these bacteria, our body seems to just allow them to get to work instead. How is this? submitted by /u/poop_if_i_want_to [link] [comments]

Is the microbiome of one ear significantly different from the other? Posted: 24 Aug 2021 08:21 PM PDT Sometimes I'm guilty of using q-tips. Is there every a chance of cross contamination between ears? submitted by /u/windupalarm [link] [comments]

Was Edward Jenner’s vaccine better than variolation? Posted: 25 Aug 2021 05:52 AM PDT submitted by /u/Prluniver [link] [comments]

If centrifugal force is a virtual force, then how does it cause any change? Posted: 25 Aug 2021 07:43 AM PDT Hi I'm a high school (age - 15) student, and recently I learned that centrifugal force doesn't really exist and it's just assumed by the observer. But we were taught that centrifuge works on the principle of centrifugal force and also that earth bulges at centre and it flattened at poles due to the action of this force. But if it does not exist, how do these changes occur? It would be really great if you use simple terms because I don't think I'm very well versed in physics and neither much acquainted with technical terms. submitted by /u/fuckwhyamInotcool [link] [comments]

How did plants grow during the 2 million years of rain (aka carnian pluvial event)? Would the photosynthesis process have been affected by the clouds or is that stupid? Posted: 24 Aug 2021 08:37 PM PDT please help submitted by /u/sundeliska [link] [comments]

How long are waves far out at sea? Posted: 24 Aug 2021 06:48 PM PDT I always hear a lot about the height of waves. I've also just come to know about 'rouge waves' , which blew my mind a bit. But how far can/do they stretch? Is it the entire length of the ocean or am I being stupid? submitted by /u/RoryFw [link] [comments]

Is Focus/attentiveness measurable? If so how? Posted: 25 Aug 2021 04:50 AM PDT If two people are working on the same task, and person 1 is thinking about food/naked women/drugs etc while working. And person 2 is fully engaged in the task. Not even noticing other people in the room. submitted by /u/Sonnycrocketto [link] [comments]

What was Mars like during periods of high tilt? Posted: 24 Aug 2021 03:13 PM PDT I've heard a bit about how high tilt on Mars probably caused the loss of polar ice caps and the accumulation of ice near the equator. What would Mars have been like in these periods, in terms of weather, atmospheric density, and just overall appearance? How frequently do periods of high tilt occur and when was the most recent one? submitted by /u/atomfullerene [link] [comments]

Does the type of sand matter for glass production? Posted: 24 Aug 2021 11:55 PM PDT Read a report that if not for plastic-glass hybrid vials, we nearly didn't manage to mass produce vaccines in such a short time. I understand not all sand are created equal, for example, dessert sand is smooth hence not suitable for construction. Construction requires rougher/angular sand from rivers etc. Controlling for variables like shipping bottlenecks and time it takes to start glass manufacturing facilities, it shouldn't matter what type of sand is used for glass production right? I am thinking glass production requires the melting of sand that changes it on a molecular level, hence the shape of the sand on the microscopic level shouldn't be a limiting factor. Am i right? Or am I missing something? Edit: this is the excerpt from an article that got me thinking about this: "Part of the problem is that glass manufacturing facilities are expensive to build. Then, there can be challenges with obtaining the needed key raw material — a particular kind of angular sand found in riverbeds and beaches that's in high demand around the world for a number of products." submitted by /u/chickensmitten [link] [comments]

What if the human body doesn't have any T cell that can bind to a particular antigen? Posted: 24 Aug 2021 11:54 AM PDT So T cells develop in the thymus during childhood where the antigen binding receptors on them are tested in positive and negative selection so that they don't hurt the body. After the thymus effectively stops working (not completely) you are effectively stuck with the antigen binding receptors from your childhood. We know in order to activate an adaptive response of the immune system T cells need to activate B cells. But if you have a pathogen that doesn't have an antigen which your childhood setup of T cells can bind to then no T cells are activated and therefore no B cells which means there is no antibody production and hence no adaptive immune response?? Would you die then? Is this why so many people die to the flu virus? Is there a way for the body to circumvent this? Is that the reason for why some people have faster adaptive immune responses to certain viruses and therefore have a higher chance of survival? While the people that by random chance had fewer T cells which could recognize this particular antigen and therefore the chance that these T cells would be in a lymph node further away from the first antigen presenting cells would therefore have to wait a longer period for the antigen presenting cells to reach the T cells and therefore delay the adaptive immune response? Please try to answer my question in detail and correct me If I made incorrect assumptions. submitted by /u/VersaBot [link] [comments]

Determining the type of decay an isotope undergoes when it has multiple options? Posted: 24 Aug 2021 09:47 PM PDT This question stems from the decay modes of Hydrogen-6 and how it can either decay via triple or quadruple neutron emission to give either deuterium or tritium. How is it determined which mode of decay happens? As a slight follow up... When the half-life of a particular isotope (let's keep using Hydrogen-6) is defined in yoctoseconds as follows: "294(67) ys" - What is the significance of the bracketed numbers? Many thanks in advance and sorry for the double question, I figure the second one is likely to be trivial to answer. submitted by /u/Eviskull [link] [comments]

How does barometric pressure affect a hurricane’s intensity? Posted: 24 Aug 2021 09:00 PM PDT submitted by /u/ShinkenRed48 [link] [comments]

What is the "Overlapping Map Theorem," or whatever it's really called? Posted: 24 Aug 2021 01:59 PM PDT I remember hearing about this math/geometry concept where if you were to take two maps of an identical place, even if they're different sizes, then lay one over the other, there will always be a point at which you can place a pin that it will be the same proportional coordinates. I can't find anything by searching "overlapping map theorem" or the like. This concept was illustrated by the fact you could take any map of the US anywhere in the country, lay it on the floor, and essentially place a "You are here" marker that would also exactly hit the hole in the map itself were an enormous scale pin to drop from the sky. Does this work for any rotation as well? What if one of the maps is not completely on top of the other? I thought of this as I was importing some photos into a project into Photoshop. They were all the same size, but some of them had erroneously rotated due to the camera tilt sensor being tricked or something since I was shooting straight down onto a table. I wondered if - instead of rotating and then readjusting position - I would have been able to use this concept to reset the center of rotation around a certain point that would have seen the image placed perfectly without directly shifting position. This would be the case if I would be able to find a point that wouldn't move coordinates from one orientation to another. Obviously it would be too computationally intense for my needs, but I'm still curious. submitted by /u/YouBeenJammin [link] [comments]

How much of the COVID-19 does it take to make one sick? Posted: 25 Aug 2021 03:00 AM PDT submitted by /u/vxp_ [link] [comments]

What's the time line for antibody production after the third shot/third dose for the mrna covid vaccines? Posted: 24 Aug 2021 09:34 PM PDT I know you're not considered fully immunized until 2 weeks after your 2nd shot. For those getting the third shot, when do those neutralizing antibody levels start to rise? Is it also 2 weeks? And is it a more gradual process? As in, each day more antibodies are formed? submitted by /u/wiredwalking [link] [comments]

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