Why do freshwater fish tend to have dull colors while tropical fish tend to have bright colors? |
- Why do freshwater fish tend to have dull colors while tropical fish tend to have bright colors?
- Is orbital energy lost through gravitational waves in all orbits, or only elliptical ortbits? Would a perfectly circular orbit create gravitational waves?
- The Coulomb force is inversely proportional to the square of the distance b/w charges. In the nucleus of an atom, with two protons next to each other, the repulsive force will be infinite as the distance between them would be 0. Is the 'Strong Force' responsible for holding them together, infinite?
- Despite the sun being nearly 100 million miles further away than the moon, I wouldn't be able to tell you which one is closer without already knowing. What is the maximum distance that variations in depth can be perceived at, and why?
- Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology
- Why are FM radio frequencies always listed with odd decimals (.1, .3, .5 etc instead of .2, .4, .6)?
- Are forests and jungles growing more rapidly now that there is an increase of CO2 in the air?
- Why does water flow out in a twister when I drain the bathtub?
- Did early humans have any predators?
- Is it possible that emotions were developed from a consistent response to similar situations?
- What is the relationship between a photon's spin and polarization?
- Since OCPs are designed to stop ovulation in fertile women - does this mean that women who take OCPs can get pregnant at more advanced ages?
- Did ancient peoples just have rampant oral disease (gingivitis, plaque, tartar, cavities) or was there a diet good for oral health?
- Why is there thunder and lightning during rainstorms, but not during snowstorms?
- Why does wire through a coil not short out and turn into one giant conductor?
- If mass distorts space, can space tear? i.e., Does space have a distortion limit?
- What specifically stops viruses or bacteria such as the Acquired Immune Deficiency Syndrome from being passed on through saliva? How does this differ from sexual fluid?
- Why does it take more delta V to hit the sun than it does to leave the solar system?
- Are there any animals that get smaller as a normal part of their life cycle?
- Why are people advised not to drink alcohol when taking antibiotics?
- Can the speed of particles in a plasma be modelled by a Maxwell-Boltzmann distribution? What about a liquid? Is the Maxwell-Boltzmann distribution only for gasses?
- How big does a sphere need to be for its surface to be considered "flat" from a human perspective?
| Why do freshwater fish tend to have dull colors while tropical fish tend to have bright colors? Posted: 03 Jan 2017 05:06 PM PST |
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| Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology Posted: 04 Jan 2017 07:05 AM PST Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Economics, Political Science, Linguistics, Anthropology 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]  |
| Why are FM radio frequencies always listed with odd decimals (.1, .3, .5 etc instead of .2, .4, .6)? Posted: 03 Jan 2017 07:26 PM PST |
| Are forests and jungles growing more rapidly now that there is an increase of CO2 in the air? Posted: 03 Jan 2017 05:22 PM PST |
| Why does water flow out in a twister when I drain the bathtub? Posted: 03 Jan 2017 06:04 PM PST |
| Did early humans have any predators? Posted: 03 Jan 2017 05:51 PM PST |
| Is it possible that emotions were developed from a consistent response to similar situations? Posted: 04 Jan 2017 06:53 AM PST I would think that emotions didn't always exist throughout life and had to be developed. Would being exposed to the same or similar scenario eventually lead to developing that emotion? Examples: Seeing a potential mate could lead to Love Having food stolen could lead to Anger [link] [comments]  |
| What is the relationship between a photon's spin and polarization? Posted: 03 Jan 2017 11:10 PM PST I've been told that a photon's spin vector is ultimately measuring the same thing as the electric and magnetic ripples it creates but I can't figure out the mathematical relationship. Spin is measured in units of angular momentum while electric and magnetic potential have their own units. Is there a simple equation that describes this relationship? [link] [comments]  |
| Posted: 03 Jan 2017 04:09 PM PST This may be a stupid question, but since OCPs are supposed to stop ovulation, and there are only a certain amount of eggs a woman carries at birth, does stopping ovulation for (let's say as an example) five years from age 20-25, give that woman 5 years of extra eggs compared to a woman who did not take OCPs? Or do these eggs still get damaged during the time the woman is on birth control? [link] [comments]  |
| Posted: 03 Jan 2017 02:52 PM PST It doesn't make much sense to me that oral disease is so common we have to brush and floss our teeth with fluoride daily. I feel like something's wrong, probably our diet. So is there a diet where you wouldn't get these common oral diseases? Or was there a technique ancient peoples used to clean their gums? Did they have floss? If they did have terribly unhealthy mouths, why wasn't this naturally selected against either by disease or sexual selection? [link] [comments]  |
| Why is there thunder and lightning during rainstorms, but not during snowstorms? Posted: 03 Jan 2017 02:48 PM PST |
| Why does wire through a coil not short out and turn into one giant conductor? Posted: 03 Jan 2017 08:21 PM PST For example, in an electromagnet, the field all go through the core but why does electrons travel through the wire instead of all over since they are all touching and conducting? [link] [comments]  |
| If mass distorts space, can space tear? i.e., Does space have a distortion limit? Posted: 03 Jan 2017 10:57 AM PST |
| Posted: 03 Jan 2017 03:59 PM PST I thought there is a direct connection between saliva and your bloodstream. Isn't that why taking medication per os, buccal or sublingual work? [link] [comments]  |
| Why does it take more delta V to hit the sun than it does to leave the solar system? Posted: 03 Jan 2017 09:25 AM PST There was a discussion on Reddit about disposing nuclear waste and someone mentioned it would be cheaper to have it leave the atmosphere than to crash it into the sun. Basically people were saying that if you are already going at the orbital speed of Earth, it doesn't take that much extra to accelerate to the escape velocity of the solar system. For some reason though, everyone was assuming that you would have to completely lose all of your orbital speed before falling into the sun. Why can't you just subtract a bit of your orbital speed and put yourself in a decaying orbit? It seems to me that people are calculating the bare minimum to leave the Solar System and comparing it to the speedy way to get to the sun. [link] [comments]  |
| Are there any animals that get smaller as a normal part of their life cycle? Posted: 03 Jan 2017 07:12 AM PST It seems that at any given moment in a creatures life, it either grows bigger or has stopped growing. With the exception of insects that go through a metamorphosis, are there any animals that are known to "grow smaller" for whatever part of their life? [link] [comments]  |
| Why are people advised not to drink alcohol when taking antibiotics? Posted: 03 Jan 2017 09:50 AM PST |
| Posted: 03 Jan 2017 01:27 PM PST |
| How big does a sphere need to be for its surface to be considered "flat" from a human perspective? Posted: 03 Jan 2017 02:23 PM PST Apologies for bad English. Let's say you get a ball. You obviously perceive it as a round object. But if you increase it's size and keep increasing it, eventually you won't realize it's round, just like people in ancient times (except the FLat Earth Society members of course) thought the Earth was flat. Is there a known size where this happens? If not, can you give a rough estimate? Thanks for the answers. [link] [comments]  |
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