As someone gets more obese, do their actual skin cells stretch or do they replicate fast enough to keep up with the increasing surface area? |
- As someone gets more obese, do their actual skin cells stretch or do they replicate fast enough to keep up with the increasing surface area?
- If iron loses it's magnetism around 800 degrees C, how can the earth's core, at ~6000 degrees C, be magnetic?
- Can artificial intelligence help with sustaining nuclear fusion?
- How are wind turbines accelerated from rest? Purely from wind or are they jump-started?
- SpaceX Falcon Heavy Launch Megathread
- Will UHVDC power lines keep increasing in voltage?
- How is our brain able to pinpoint specific voices in crowds and then focus in on what they're saying?
- Life expectancy with Down Syndrome was just ~24 years as recently as 1985. Now it's 60+. What advances are most responsible for this?
- The overuse of antibiotics has lead to the development of antibiotic resistant "Superbugs". How much of this phenomenon is due to industrial agriculture and how much of it is due to misuse of antibiotics in healthcare?
- How does our immune system know not to attack gut flora like it would a bacterial infection?
- If a probe was sent to drill into the ice of Europa to search for life, couldn't even a single microbe potentially introduce life to the planet or threaten their biosphere? Can we render a probe truly, truly sterile and if so how can such be done?
- Why does something straight, like ribbon or hair, curl when you drag scissors along its surface?
- If we are filling space with space junk, will there come a time when there is too much in space to send anything up because of collision risk? If so, is there a way to clean up all the junk?
- If the salt water in the ocean accumulated over time was there ever a point where it was all freshwater?
- Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science
- What makes an orange orange?
- What happens to the mass of an irradiated brain tumor?
- Why can a person live with one lung, but die from a unilateral pulmonary embolism?
- Is there enough atmosphere to hear music playing on Mars?
- At what temperature do Bose-Einstein Condensates and other exotic states of matter exist?
- Since the speed of light is the maximum speed anything can reach, does that mean the amount of energy any mass can have is finite?
- Is it possible with unlimited fuel to reach the speed of light in space? Or is there a maximum speed that can be reached?
| Posted: 07 Feb 2018 02:58 AM PST A follow up question would be: If the cells stretch more than they replicate, does this mean that there is a lower concentration of nerve endings? Would stretched skin around large fat deposits be less sensitive to touch? [link] [comments]  |
| Posted: 06 Feb 2018 07:39 AM PST |
| Can artificial intelligence help with sustaining nuclear fusion? Posted: 07 Feb 2018 04:03 AM PST The way I understand it, the main challenge to sustainable nuclear fusion is the confinement of plasma within the reactor. The approach to doing this currently is to use fixed magnetic fields to confine the plasma into a certain shape (for example: toroid in a tokamak reactor). The issue is that sometimes, plasma still manages to escape this shape, and therefore fusion is broken. Here's my question, wouldn't it make more sense to use deep learning technology to train a program to monitor the plasma inside the reactor at different points and then alter the strength of the magnetic fields being emitted accordingly so that it results in the plasma staying in the shape we want for sustained fusion? [link] [comments]  |
| How are wind turbines accelerated from rest? Purely from wind or are they jump-started? Posted: 07 Feb 2018 05:35 AM PST Do they need a motor to get them accelerated to a reasonable rpm or is their movement purely dependent on the wind? [link] [comments]  |
| SpaceX Falcon Heavy Launch Megathread Posted: 06 Feb 2018 06:48 PM PST There are a lot of questions about the launch of the Falcon Heavy Demonstration Mission on February 6, 2018 and its payload, the Tesla Roadster. We have a number of engineers, physicists, and astronomers here to help answer your questions! [link] [comments]  |
| Will UHVDC power lines keep increasing in voltage? Posted: 07 Feb 2018 06:09 AM PST In the 50s Russia had a 100 kV line, China built a 1100 kV line in 2016. Will 2100 have a 10,000 kV project? I wondered if anyone had an idea if there are theoretical limits or cost projections saying if this trend will continue. [link] [comments]  |
| Posted: 06 Feb 2018 06:05 PM PST |
| Posted: 06 Feb 2018 12:05 PM PST Was there some specific problem that was solved, or was it just a cumulative effect from a lot of little fixes? What is still causing the remaining gap between the life expectancy of someone with Down Syndrome and the 75+ years of someone without? [link] [comments]  |
| Posted: 06 Feb 2018 06:09 PM PST |
| How does our immune system know not to attack gut flora like it would a bacterial infection? Posted: 06 Feb 2018 09:36 PM PST |
| Posted: 06 Feb 2018 08:08 PM PST Getting 99.99% of microbes seems viable and for purposes on Earth that is usually enough but do we have the capacity to get EVERY last microbe and if so, how? [link] [comments]  |
| Why does something straight, like ribbon or hair, curl when you drag scissors along its surface? Posted: 06 Feb 2018 04:58 PM PST |
| Posted: 06 Feb 2018 11:21 PM PST |
| Posted: 06 Feb 2018 11:42 PM PST |
| Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science Posted: 07 Feb 2018 07:07 AM PST Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Physics, Astronomy, Earth and Planetary 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! [link] [comments]  |
| Posted: 06 Feb 2018 06:53 PM PST |
| What happens to the mass of an irradiated brain tumor? Posted: 06 Feb 2018 06:13 PM PST I understand that radiation stops mitosis, so the tumor no longer grows. What happens to the tumor's tissue after radiation treatment? Is it considered "dead"? Does it shrink? Can it be re-absorbed? [link] [comments]  |
| Why can a person live with one lung, but die from a unilateral pulmonary embolism? Posted: 06 Feb 2018 06:13 PM PST Just studying about DVT's and PE's and was wondering. Is it because the PE puts you into right ventricular heart failure? Thanks! Edit: Punctuation. [link] [comments]  |
| Is there enough atmosphere to hear music playing on Mars? Posted: 06 Feb 2018 02:35 PM PST |
| At what temperature do Bose-Einstein Condensates and other exotic states of matter exist? Posted: 06 Feb 2018 11:57 PM PST All I can seem to find is that "Bose-Einstein Condensates exist in very low temperatures whilst plasma and quark-gluon plasma exists at very high temperatures." Does anyone know exact temperatures that these states of matter exist? For example, does a BEC only occur in temperatures ranging 1 – 10 kelvin or 1 – 10 nanokelvins? What order of magnitude of temperature (i.e. 10,000 K, 100,000 K — not too sure if I'm using the right terminology here) would plasma or quark-gluon plasma exist? Thanks! [link] [comments]  |
| Posted: 06 Feb 2018 03:01 PM PST To further explain my question, we know that all matter contains some form of energy. Since the limit of how fast anything can move is the speed of light, does that mean that there is an actual finite number of energy that any mass can reach? If something were to move at the speed of light, the energy of the system can be calculated easily using formulas we know, but it only translate into energy from movement if I remember correctly. For example, if a mass were to travel at the speed of light, let's say it has 1000 joules. Can the system have more than 1000 joules? Seeing as how a system can have energy beyond kinetic, it should be able to have more than 1000 joules, because that only quantifies the kinetic portion of the system. However, is this true? If the system holds more energy, would that not translate into movement? From my understanding, almost all energy has to do with movement. For example, temperature could be explained as the movement/vibrations of matter. The hotter it is the more motion the particles have, which is why objects at absolute zero don't have any motion (0 energy). Or at least that's what I think, but I would really like an answer to this question. Thanks [link] [comments]  |
| Posted: 06 Feb 2018 04:56 PM PST |
| 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 | |
No comments:
Post a Comment