Do ozone holes (like the one above NZ) make solar power in that area more effective? |
- Do ozone holes (like the one above NZ) make solar power in that area more effective?
- Can both pressure and vacuum exert identical magnitudes of stress inside a pressure vessel?
- How did we collect the details needed (atmosphere, dust storms, etc) to land space rovers on other on other planets?
- How do we measure mass in space?
- Do animals have conversations?
- If in order change the amount of energy in a system it is necessary to apply an external force, How can we increase our range when we swing on a swing, just by moving our legs?
- A less abstract definition for energy?
- What is the difference between numerical relay and static relay?
- How do you get full wave retardation from a LCD structured light modulator?
- Is sex in humans really binary?
- Why do some organisms age faster than others? What determines how fast an organism ages?
- How does deodorant work exactly?
- What are the conditions for annihilation?
- How do dogs recognize other dogs of different breeds as dogs?
- How do we Know that the SNR 0519 went Supernova 600 years ago when It is 150,000 light years away from us?
- Did Cro-Magnon cut their hair and shave their faces?
- Dear chemists, why do personal hygene products list water as "eau" or "aqua" in the ingredients?
- Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology
- Are there any “rare” blood types besides -O?
- Do dogs recognize their name in the same way we do, or do they see it as more of a command like "sit"?
| Do ozone holes (like the one above NZ) make solar power in that area more effective? Posted: 17 May 2018 03:36 AM PDT If so, by how much? If not, why? Obviously, the health costs would outweigh any benefit here, but I'm just curious. [link] [comments]  |
| Can both pressure and vacuum exert identical magnitudes of stress inside a pressure vessel? Posted: 17 May 2018 07:54 AM PDT The stress profile will vary based on if its pressure or vacuum, but will equal magnitudes of either i.e. 20 psi vs -20 psi (on either side of atmospheric pressure) exert comparable stresses on their container? [link] [comments]  |
| Posted: 17 May 2018 07:25 AM PDT Like how does nasa collect the details needed to design their rover so it does not mess up really quickly on a different planet? [link] [comments]  |
| How do we measure mass in space? Posted: 16 May 2018 11:16 PM PDT I've seen things like balances, but never understood how they're truly dependent on mass and not weight (due to gravity pulling them into the balance). How would we pull this off in space? [link] [comments]  |
| Do animals have conversations? Posted: 16 May 2018 02:48 PM PDT So the other day outside of work I heard two birds having a conversation, at least that's the best way I can describe it. It wasn't a single call with a response, there was multiple pitches and calls back and forth. I think it was a conversation due to a small rest between the responses and one sounded higher pitched than the other. Do animals have conversations like us very often ? Is it limited to certain breed or species of animal ? Are there certain animals that cannot speak beyond basic howls ? [link] [comments]  |
| Posted: 16 May 2018 11:29 AM PDT |
| A less abstract definition for energy? Posted: 16 May 2018 02:31 PM PDT "The capacity to cause movement" is what I've read about how energy is defined, and that definition makes it sound like energy doesn't physically exist, like it's more of an idea, but energy can be measured like a physically existent thing. Is there a more conventional or updated definition for energy? Or is there a way of looking at the concept of energy that would make defining it more easily digestible in non-scientific circles? [link] [comments]  |
| What is the difference between numerical relay and static relay? Posted: 17 May 2018 02:21 AM PDT |
| How do you get full wave retardation from a LCD structured light modulator? Posted: 17 May 2018 01:01 AM PDT Hi AskScience, this seems to be the most appropriate place to post this. We have a transmissive SLM kit that should provide phase retardation of 2pi degrees for each pixel in a LCD panel. However, it is only able to provide half wave retardation. This has been tested using a linear polariser in the beam path after the LCD panel, and it acts as an intensity modulator which shows there is only a half wave retardation. A linearly polarised HeNe laser is used as the input beam, and the LCD driver runs as an external display. Does anyone know how to drive an LCD panel in order to achieve 2pi retardation? All other venues to try and solve the problem have been fruitless so far, hence turning to reddit! Many thanks.... [link] [comments]  |
| Is sex in humans really binary? Posted: 17 May 2018 05:51 AM PDT We categorize people as male or female at birth based on phenotype (maybe karyotype?). https://www.nature.com/news/sex-redefined-1.16943 I can't find a solid definition for categorizing people as male or female. There are people who exist (in biological terms) outside of the binary (intersex/pseudo-hermaphroditism). Sex is influenced by many biological/genetic factors, so is sex in humans a spectrum rather than binary? [link] [comments]  |
| Why do some organisms age faster than others? What determines how fast an organism ages? Posted: 16 May 2018 08:18 AM PDT |
| How does deodorant work exactly? Posted: 16 May 2018 07:01 PM PDT |
| What are the conditions for annihilation? Posted: 16 May 2018 11:18 AM PDT Sadly I don't have a physics tutor to ask questions to, my understandings comes solely from self-study, so I apologise if my assumptions are incorrect or if the question seems outright stupid. I used to believe that most every-day interactions were physical. That is to say that if I push a chair, the atoms in my hand were in direct contact with those of the chair, and this caused the force when I pushed. Now however, I believe that these interactions are electrical, and that atomic and subatomic particles don't come into physical contact in such circumstances, instead the electrons in orbit about the atoms in my hand repel those in orbit about the atoms in the chair. My reason for this thought process is the Rutherford experiment and the fact that most Neutrinos can pass through large bodies (such as the Earth) with no interaction at all, presumably because they lack charge. Onto my question. I have read that annihilation occurs when a particle... Does something with its antiparticle. The phrases I've heard for that something are "interact"," collide", "come into contact with", etc. Taking the example of positrons from beta+ radiation, I've read that these annihilate almost immediately to produce gamma rays. What interaction between a positron and electron is necessary for annihilation to occur? These particles are tiny and have opposite charge, so surely it's unlikely for them to actually experience contact so quickly? Is there a certain range a particle must be within of its antiparticle to annihilate? If so, what determines this range (e.g. mass)? If not, what condition must be met for annihilation to occur? [link] [comments]  |
| How do dogs recognize other dogs of different breeds as dogs? Posted: 16 May 2018 07:15 AM PDT Dogs seem to have the capacity to recognize other dogs that look absolutely nothing like them as other dogs. They will respond by getting excited and barking in a way that they do not respond to other animals including human strangers or other small mammals. It is my understanding that all dog breeds are man-made as a result of breeding over the course of thousands of years. How then have dogs maintained the capacity to recognize other dogs of different breeds as still being dogs? [link] [comments]  |
| Posted: 16 May 2018 11:16 AM PDT How do we Know that the SNR 0519 went Supernova 600 years ago when It is 150,000 light years away from us - which means we are seeing it as it was 150,000 years ago. https://www.nasa.gov/mission_pages/hubble/science/snr-0519.html [link] [comments]  |
| Did Cro-Magnon cut their hair and shave their faces? Posted: 16 May 2018 08:02 AM PDT I don't see it being very advantageous from an evolutionary point of view to have hair and/or a beard as long as uncut hair can grow, and I don't know if the Cro-Magnons had the know-how or the technology to cut their hair. [link] [comments]  |
| Dear chemists, why do personal hygene products list water as "eau" or "aqua" in the ingredients? Posted: 16 May 2018 10:34 AM PDT |
| Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology Posted: 16 May 2018 08:13 AM PDT 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]  |
| Are there any “rare” blood types besides -O? Posted: 16 May 2018 07:41 AM PDT I know that O- is a universal donor and that there are not so many people that have that blood type, but I was wonering if there are any blood types besides the A, B, and O in all their variations. And is that part of a condition or a genetic mutation? [link] [comments]  |
| Posted: 16 May 2018 08:56 AM PDT |
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