If dark matter does not interact with normal matter at all, but does interact with gravity, does that mean there are "blobs" of dark matter at the center of stars and planets? |
- If dark matter does not interact with normal matter at all, but does interact with gravity, does that mean there are "blobs" of dark matter at the center of stars and planets?
- Why does running ice cold water on my hands not feel as bad as running it on any other part of my body?
- Can a symmetrical molecule be polar?
- Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology
- How can bosons ever evolve to be in the same state?
- How can an asteroid strike cause global heating especially enough to end an ice age (like the Yarrabubba crater strike)? Wouldn't the dust block sunlight and cause cooling?
- How is atomic number determined? If a sample of an unknown heavy element is obtained, how would chemists determine its atomic number?
- Do structures have a "deformation point", meaning that deformation over time will only occur after a certain force threshold has been met?
- What are the Mars rovers doing on any given day?
- What happens to the oil that we apply on our skin?
- How do Unique Molecular Identifiers (UMIs) differ from standard NGS sample indexes?
- How do we calculate the Eddy current loss produced in a core that isn't laminated ?
- How does file compression work?
- How do wearable health devices (body patches, smartwatches) measure respiration rate?
- What causes someone to be a 'super spreader'?
- Hiw do our bodies produce heat?
- What's the formula for finding new prime numbers if the Riemann hypothesis is true?
- Can astronauts see stars from ISS?
- Is there a way to ballpark how old trees are?
- In fluid dynamics the no-slip condition of a fluid means that at a boundary the fluid will have zero velocity. Does this also apply to the blood in capillary in the human body?
| Posted: 22 Jan 2020 03:38 AM PST |
| Posted: 21 Jan 2020 08:00 AM PST Is is the years of daily washing my hands with cold water and becoming accustom to it, or are hands naturally less sensitive to cold water? [link] [comments]  |
| Can a symmetrical molecule be polar? Posted: 22 Jan 2020 03:27 AM PST For example is Iodine monochloride ( ICl ) a symmetrical molecule? It is clearly polar given the difference in electro negativity values. Or is the idea of it being EITHER symmetrical or not a concept that breaks down at higher levels? [link] [comments]  |
| Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology Posted: 22 Jan 2020 07:08 AM PST Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Biology, Chemistry, Neuroscience, Medicine, Psychology 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! [link] [comments]  |
| How can bosons ever evolve to be in the same state? Posted: 21 Jan 2020 10:14 PM PST Bosons are characterized by being the ability to be in the same quantum state at the same time, e.g. a laser can be made by "piling" a bunch of photons into the same state. However, doesn't unitarity guarantee that if two quantum systems start out in different states, they stay in different states? Or can this only occur when wave functions collapse? If so, it seems like wave functions collapsing into exactly the same waveform would be very unlikely, and I don't understand how we would see practical differences between fermions and bosons. [link] [comments]  |
| Posted: 22 Jan 2020 03:34 AM PST |
| Posted: 21 Jan 2020 05:47 PM PST How were the atomic numbers of newly discovered heavy elements determined? For example, Oganesson (element 118). I can't think of any way that one could count all the protons nor electrons in something. Removing electrons would seem to me to be increasingly difficult once the easy to remove outer electrons were removed, let alone removing them all from a heavy element. [link] [comments]  |
| Posted: 21 Jan 2020 06:30 PM PST Let's say for example you had an iron pipe. This pipe is strong enough that a person standing on top of it is not enough to create any visible deformation in its shape, while something such as a car, many times heavier than a person, would be able to deform and bend the pipe instantly after application. Is there a minimum calculable amount of force that when applied will deform the pipe, with forces lower than the minimum having no effects now or in the future, or does any weight deform the pipe, but with variable times, such as the person standing on the pipe for 1000 years deforming the pipe similar to the car after 10 seconds. [link] [comments]  |
| What are the Mars rovers doing on any given day? Posted: 21 Jan 2020 11:32 AM PST |
| What happens to the oil that we apply on our skin? Posted: 21 Jan 2020 11:14 AM PST My sister has been recommending this massage place that she loves for all eternity now. So the other day I decided to try out. The masseuse applied plenty of oil over my body (so much that it seemed to drip) yet 30 minutes later I notice that my body is just as before. So my question is where did all the oil go? I know my skin absorbed it but where is it stored? And is it likely to get accumulated in my body & make me gain fat? [link] [comments]  |
| How do Unique Molecular Identifiers (UMIs) differ from standard NGS sample indexes? Posted: 21 Jan 2020 11:24 AM PST I'm trying to wrap my head around unique molecular identifiers (UMI) and how they differ from sample indexes such as 'NEBNext Multiplex Oligos for Illumina' (used these as an example as they're what I work with mostly). I understand how index oligos are used for multiplex sequencing in order to tell apart pooled libraries in a sequencing run. How then, do UMIs fit into this picture and how are they used to "identify the input DNA molecule"? I'd appreciate if someone could point me toward some good resources I could look into to understand this better. Thanks. [link] [comments]  |
| How do we calculate the Eddy current loss produced in a core that isn't laminated ? Posted: 21 Jan 2020 05:39 PM PST As in, a core that's just one continuous block of ferromagnetic material ? All the equations I've seen were for cores made of thin, individually insulated laminations, and take into account the thickness of lamination. Also, how would this be calculated if it were a cylindrical core ? [link] [comments]  |
| How does file compression work? Posted: 21 Jan 2020 09:22 AM PST As title says. How does that work? I understand that files can't change size normally without reducing the amount of information the contain, and yet if you simply compress that stuff into a .zip or .7z It somehow is smaller? Found the thought fascinating. [link] [comments]  |
| How do wearable health devices (body patches, smartwatches) measure respiration rate? Posted: 21 Jan 2020 10:54 AM PST I am researching specific health devices and determining a good candidate device to monitor patients with a wide range of complicated health issues to monitor remotely. However, I find that the physical mechanism most of these devices to monitor certain vital signs is left out. I understand a finger clip can use a pulse oximeter to measure respiration rate, but how would a body patch (such as toSense's CoVa necklace: https://www.tosense.com/, or the new Apple Watch 4) or a wrist watch monitor respiration? [link] [comments]  |
| What causes someone to be a 'super spreader'? Posted: 21 Jan 2020 11:43 AM PST Struggling to understand the underlying mechanism that explains why some ill patients disproportionately infect those around them with a virus. Is it a phenomenon that's well understood? [link] [comments]  |
| Hiw do our bodies produce heat? Posted: 21 Jan 2020 10:34 AM PST I assume that it has something to do with our blood because that's the thing that circulates throughout our body and regulates our heat (presumably it mostly warms us while our sweat cools us). I really don't know and would love it if someone could help me. [link] [comments]  |
| What's the formula for finding new prime numbers if the Riemann hypothesis is true? Posted: 21 Jan 2020 10:33 AM PST To my understanding, if the Riemann hypothesis is true we would know where all the zeros of the Zeta function lie and so we would know if we "missed" some prime numbers (since we know the distribution of prime numbers from knowing all the zeros), but is thus just pure an information (Ex. we know where primes are so we don't have to search everywhere) or is there a formula to obtain new prime numbers? [link] [comments]  |
| Can astronauts see stars from ISS? Posted: 21 Jan 2020 08:19 AM PST |
| Is there a way to ballpark how old trees are? Posted: 21 Jan 2020 08:18 AM PST |
| Posted: 21 Jan 2020 06:59 AM PST When blood flows too fast oxygen, proteins, cellular waist etc. can not be exchanged between blood vessels and cells. Yet when a fluid flows slowly the no-slip condition occurs "coating" the wall of a vessel or tube in a thin layer of molecules that stay in the same place. How can exchange between blood and cells then happen in the capillary where blood pressure and flow rate at its lowest? [link] [comments]  |
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