What effect does Viagra have on a [biological] female? |
- What effect does Viagra have on a [biological] female?
- AskScience AMA Series: We are Prion Researchers! Ask Us Anything!
- Does asymptotic safety save everything?
- How does algae get introduced to new water sources?
- Why is the C14 method reliable while the amount created by it's main source isn't static and can't be calculated for objects older than ~10000 years?
- Does light have its own gravity?
- Sonic fire extinguisher. How does it work?
- Why is the radius where we are able to observe objects as they currently are 15 billion lightyears? Will this radius shrink, expand or remain constant?
- Why can computers perfectly reproduce a voice recording but can't synthesize a voice?
- How Do Waterproof Matches Work?
- why do the low notes on a piano carry for much much longer than the high notes?
- Do longitudinal and transverse waves in a metal spring influence each other?
- Is mixing household common vinegar and bleach really likely to create chlorine?
- How are old films able to be re-released in 4k?
- If an airplane acts as a Faraday Cage, why can we still use 4G and GPS reasonably well inside (at low altitudes)?
- Is quantum computing theoretically useful in other contexts than cryptography?
- Can you create a server farm in space?
- How do anthropologists and paleontologists clarify that a discovered bone is from a separate pre-modern species and not just an old bone from a relatively modern species that had a physical or genetic abnormality?
- 3D volumetric printing works by shining a light through a resin so a particular shape is hardened within it, why doesn't the liquid around the shape harden as well?
- Can fish/crustaceans breath in liquids other than water, such as ethanol?
- If I stare at a fixed point and move my head side to side, my eyes remain in a fixed forward position while my head turns. I don't feel myself moving my eyes side to side. Yet if I hold my head still and look left to right I can feel myself moving my eyes. So, what's happening in the first scenario?
| What effect does Viagra have on a [biological] female? Posted: 20 Jun 2019 01:47 AM PDT Topic. Also disclaimer: Asked this once (not here) and only got angry people saying that some "females" can have penises so that's why I'm clarifying biological.... [link] [comments]  |
| AskScience AMA Series: We are Prion Researchers! Ask Us Anything! Posted: 19 Jun 2019 08:51 AM PDT Hello Reddit!! We are a group of prion researchers working at the Centre for Prions & Protein Folding Diseases (CPPFD) located on the University of Alberta Campus, in Edmonton, Alberta, Canada. Prion diseases are a group of rare, neurodegerative diseases that are invariably fatal and for which we currently have no cure. Having come from the most recent international prion conference (Prion2019) and with prions being highlighted in the news (CWD – aka "Zombie Deer Disease") we have decided to do an AMA to help clear some of the confusion/misinformation surrounding CWD, prions, and how they are transmitted. With us today we have 5 of the professors/principle investigators (PI's) here to answer questions. They are: Dr. David Westaway (PhD) – Director of the CPPFD, Full Professor (Dept. Medicine – Div. Neurology), and Canadian Tier 1 Research Chair in Neurodegerative Diseases. Dr. Judd Aiken (PhD) – Full Professor (Dept. Agriculture, Food and Nutritional Science), expert on CWD and environmental contamination of prions. Dr. Debbie McKenzie (PhD) – Associate Professor (Dept. Biological Sciences), expert in CWD strains and spread. Dr. Holger Wille (PhD) – Associate Professor (Dept. Biochemistry), expert in the study of the structure of native and misfolded prions. Dr. Valerie Sim (MD) – Associate Professor (Dept. Medicine – Div. Neurology), Clinical Neurologist, and Medical Director of the Canadian CJD Association, expert on human prion disease. /u/DNAhelicase is helping us arrange this AMA. He is the lab manager/senior research technician to Dr. Valerie Sim, and a long time Reddit user. We will be here to answer questions at 1pm MST (3pm EST) Proof: https://imgur.com/a/qPIES26 (left – Dr. McKenzie, right – Dr. Sim, middle – Dr. Westaway; not pictured – Dr's. Aiken and Wille) For more information about us and our research please visit our webpage: https://www.ualberta.ca/faculties/centresinstitutes/prion-centre [link] [comments]  |
| Does asymptotic safety save everything? Posted: 20 Jun 2019 07:01 AM PDT I recently overheard the factoid, that a standard quantization or GR might actually be free of divergencies after all. All this string theory business was invented, since a quantum theory of gravity is not renormalizable. As far as I understand, this could just be a consequence of perturbation theory and the full theory is completely fine. What's up with that? t. Not a theorist, but I know my QFT. [link] [comments]  |
| How does algae get introduced to new water sources? Posted: 19 Jun 2019 10:36 PM PDT Can not find the answer online. I understand how they reproduce and what they need to survive. My question is how does water transition from being clean and lifeless too becoming a cesspool of life. An aquarium for example? [link] [comments]  |
| Posted: 20 Jun 2019 04:18 AM PDT The main source for c14 is depending on the power of the magnetic field of the sun which is connected to sun activity. Thats why C14 can be used to determine sun activity of thousands of years ago. This analysis has its limits of around 10000 years though. C14 is also used to determine age (even of things way older than our limits of calculating sun activity). So how is it possible to determine age in one case and sun activity in another? Age and sun activity don't correlate and both are determined by the amount of C14 left. How are we sure that something has a certain age if there is another parameter we dont know and perhaps cant even calculate because the object is too old? Do scientist just assume that sun activity was approximitly the same? Or do other methods exist i don't know about? [link] [comments]  |
| Does light have its own gravity? Posted: 19 Jun 2019 08:57 PM PDT Light has no mass and is affected by gravity, I was just wondering if it had any gravity of its own? [link] [comments]  |
| Sonic fire extinguisher. How does it work? Posted: 20 Jun 2019 12:41 AM PDT I recently saw a video of two engineering students putting out fire using sound waves. I understand the basic concept, sound waves create pressure difference and that can be exploited by starving the fire of oxygen in the low pressure part of the wave. What I'm struggling with is the execution of this concept. Does this mean the fire has to be extinguished in the first rarefraction of the wave, because after that the fire will be made stronger by the added oxygen. My question is whether the fire has to be extinguished within the first rarefraction of the wave and if not how do they do it? [link] [comments]  |
| Posted: 20 Jun 2019 12:36 AM PDT I watched an educational video recently where this dude explained the reason why the observable universe is 92 billion light years wide, while the universe is only 13,7 billion years old. Later in the video he explained that there's a radius of 15 billion light years where the objects inside that radius will be visible to us as they currently are relative to them (when the light from those objects hits us), but the objects outside that radius will never be. This confused me, mainly because the number 15 billion seemed arbitrary, since it seemingly had no relation the the age of the universe or the size of the observable universe. Will this radius remain constant and will objects simply move outside it, or will it shrink/expand? Please explain? Link to video: https://youtu.be/vIJTwYOZrGU at the 7:28 mark he explains the thing about the 15 billion light year radius, however i reccomend watching the whole thing for context. [link] [comments]  |
| Why can computers perfectly reproduce a voice recording but can't synthesize a voice? Posted: 19 Jun 2019 08:09 PM PDT Hello, I wanted to find out why can computers perfectly reproduce a human voice from a recording but can't synthesize a voice that sounds perfectly natural? [link] [comments]  |
| How Do Waterproof Matches Work? Posted: 19 Jun 2019 10:32 AM PDT I know that water extinguishes a flame due to water removing energy from the system, preventing the reaction to go over the activation energy. I don't get how the wax on fireproof matches work. You need fuel, oxygen and heat for combustion but I don't see the wax helping any of these 3 factors in water. [link] [comments]  |
| why do the low notes on a piano carry for much much longer than the high notes? Posted: 19 Jun 2019 04:57 PM PDT if you slam an A in the first octave and an A in the last octave, the former will continue to output sound for much longer than the latter. why is that? [link] [comments]  |
| Do longitudinal and transverse waves in a metal spring influence each other? Posted: 19 Jun 2019 01:59 PM PDT I learned that waves propagating through a medium pass through each other without influencing each other. (wave superposition) I saw an experiment in which two transverse waves, started from opposing ends of a long metal spring (slinky spiral) with opposing amplitudes passed through each other seemingly unaffected. However, when the experiment was modified by sending one longitudinal and one transverse wave through the spiral "something seemed to happen" when the two waves met. I got the impression that the propagation of the longitudinal wave was slowed down. Which would seem to violate the principle of wave superposition. My questions: Is the principle of wave superposition true in all cases, even when longitudinal and transverse waves meet? If no, does the elongation of the spring (different tension) by one wave affect the wave velocity of the other wave? Or was my impression just a result of friction between floor and spring? Are there any other interesting cases of waves interacting with each other? Thank you very much for any answers and input! [link] [comments]  |
| Is mixing household common vinegar and bleach really likely to create chlorine? Posted: 19 Jun 2019 03:07 PM PDT I'm getting mixed answers from the net about how accurate that claim is. It seems to me like some mildly researched article wrote that mixing vinegar and bleach made chlorine gas, and everyone then quoted that same article. I understand that lowering the pH of hypochlorite is going to create chlorine gas, but it seems to me that the chemical reaction described in the article is simplistic and doesn't take into account real-life factors, such as concentration, dilution, and other chemical present in both products. The internet is shock full of people saying chlorine gas definitely gets released, but without ever any underlying justification (save for an occasional vague "adding acid = chlorine gas"). It seems to me like the people who know what they're talking about are mostly saying it doesn't. Not being well versed enough in chemistry to have the possibility to make a non-ambiguous opinion by myself, I hope someone(s) here can help me. Some of the links that made me rethink this:
Thanks for any pointers! [link] [comments]  |
| How are old films able to be re-released in 4k? Posted: 19 Jun 2019 09:09 AM PDT All I know about the production of movies is recording it on a camera in a digital format. Does chemical "film" store images at an undefined resolution, which has its presentation limited only by the current projection or screen technology? Has the actual capture quality of the images themselves not improved at all over the years? Where is the limiting factor? [link] [comments]  |
| Posted: 19 Jun 2019 03:06 PM PDT |
| Is quantum computing theoretically useful in other contexts than cryptography? Posted: 19 Jun 2019 09:01 AM PDT Current university physics and math student. After doing a presentation on Shor's algorithm I am wondering if there are other proposed benefits of quantum computing. I can't find any algorithms that give more than a polynomial speed up to classical algorithms. Are there any? Are quantum computers pretty much a waste of time once post quantum cryptographic standards become the norm? [link] [comments]  |
| Can you create a server farm in space? Posted: 19 Jun 2019 09:34 AM PDT Assuming current technology, can we create a server farm say the size of a small data center orbiting earth? Also assume weight is not a factor, what are the limiting factors preventing a space server farm? Is it cooling or something else? [link] [comments]  |
| Posted: 19 Jun 2019 06:00 AM PDT |
| Posted: 19 Jun 2019 07:34 PM PDT Sorry about the odd phrasing of my question. Basically the light is shined through a resin, and the point where the light is most intense hardens. The first method is done by shining light from several different points at once, so the point in the resin where the light met would harden, and the areas around it would not because the light intensity was not strong enough. But the second method is done by rotating the liquid and shining light from a single point (a projector). Why doesn't the liquid around the shape harden as well? [link] [comments]  |
| Can fish/crustaceans breath in liquids other than water, such as ethanol? Posted: 19 Jun 2019 05:42 AM PDT I saw a TIL about anaesthetising octopi by dunking them in ethanol- and I wondered if gills etc are able to extract oxygen dissolved in other liquids or only from water [link] [comments]  |
| Posted: 19 Jun 2019 09:03 AM PDT Are my eyes moving involuntarily in order to stay focused on a point? Are they just swiveling in my head within a fluid or something? [link] [comments]  |
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