Are there seasons in the deep ocean?

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• Are there seasons in the deep ocean?
• Rubbing alcohol is often use to sanitize skin (after an injury/before an injection), but I have never seen someone use it to clean their counters or other non-porous surfaces — is there a reason rubbing alcohol is not used on such surfaces but non-alcohol-based spray cleaners are?
• Climate scientists are saying that climate change is irreversible. If we continue on the path we are currently in, in which we keep using fossil fuels. How much longer do we expect the human race to last? Will we all die in a 100 years? 1000?
• When describing black holes in galaxies people generally say “almost all galaxies have black holes at their centers” why almost”? Are there galaxies without supermassive black holes in their centers, if so how do they form?
• What percent of my blood volume gets oxygenated with one breath?
• AskScience AMA Series: We are Julia Taylor Kennedy & Pooja Jain-Link from the Center for Talent Innovation and we just published "Wonder Women in STEM and the Companies that Champion Them" - we want to share solutions to improve gender equality in the STEM fields. Ask Us Anything!
• The new kilogram definition seems complex. Why not define it in terms of the mass of a proton?
• What determines how opaque or transparent a material is, on a molecular level?
• Why some materials, like diamonds, who are form in extremely high pressures don't recover its initial form when they are at 1 atmosphere of preassure?
• With current nuclear reactors' consumption, how much "fuel" do we have left?
• An impact crater has been recently discovered in Greenland that may have been caused by a 1-mile-wide asteroid. If an analogous asteroid were discovered heading towards Earth, would we be able to pinpoint in advance an exact impact location? How much time in advance?
• If suppressors reduce the firing noise in guns, and make them go a little further, then why do armies not use them more often?
• How do people exactly measure absurdly high temperatures, like 100 million? Or are they just estimating it?
• Can someone help me find the spectra of the TRAPPIST-1 Exoplanets?
• Do we lose radio communication with Mars when it is behind the moon?
• Is sustainable muon catalysed fusion possible in the upper atmosphere where muons are produced due to cosmic waves hitting the upper atmosphere?
• Are there El Niño/La Niñas on other bodies of water, other than the Pacific Ocean?
• What kind of batteries did the Apollo astronauts have in their backpacks?
• If language, music, and talking are important for brain development (not just language development), do brains of deaf babies develop differently?
• I can't seem to grasp my head around the concept of rest mass how is it different from the mass we know?
• Are there more elements to be discovered on earth? Do we think we've discovered every element that exists on this planet,or will the periodic table continue to expand?
• When splitting water molecules by electrolysis, how would sperate the hydrogen and oxygen?

Are there seasons in the deep ocean? Posted: 15 Nov 2018 04:11 PM PST submitted by /u/--llll---------lll-- [link] [comments]

Rubbing alcohol is often use to sanitize skin (after an injury/before an injection), but I have never seen someone use it to clean their counters or other non-porous surfaces — is there a reason rubbing alcohol is not used on such surfaces but non-alcohol-based spray cleaners are? Posted: 15 Nov 2018 04:16 PM PST submitted by /u/maux_zaikq [link] [comments]

Climate scientists are saying that climate change is irreversible. If we continue on the path we are currently in, in which we keep using fossil fuels. How much longer do we expect the human race to last? Will we all die in a 100 years? 1000? Posted: 15 Nov 2018 03:48 PM PST submitted by /u/OSRSDrugsnMusic [link] [comments]

When describing black holes in galaxies people generally say “almost all galaxies have black holes at their centers” why almost”? Are there galaxies without supermassive black holes in their centers, if so how do they form? Posted: 16 Nov 2018 03:38 AM PST submitted by /u/KevReynolds314 [link] [comments]

What percent of my blood volume gets oxygenated with one breath? Posted: 15 Nov 2018 01:58 PM PST How do factors like bmi and age affect this value? submitted by /u/159357284675931 [link] [comments]

AskScience AMA Series: We are Julia Taylor Kennedy & Pooja Jain-Link from the Center for Talent Innovation and we just published "Wonder Women in STEM and the Companies that Champion Them" - we want to share solutions to improve gender equality in the STEM fields. Ask Us Anything! Posted: 16 Nov 2018 04:35 AM PST Many women who work in the STEM industries still feel stuck in their careers. Our latest study, "Wonder Women in STEM and the Companies that Champion Them," identifies several strategies that can foster career advancement for women in these fields. I'm Julia Taylor Kennedy, Executive Vice President and Director of Publications at CTI, and I'm Pooja Jain-Link, Senior Vice President and CTI's Director of Research. We're familiar with the challenges women face as they attempt to climb the ladder to the C-Suite in science, technology, engineering, and math (STEM) fields--challenges that often lead them to lean out of their industries entirely. Our latest report shifts from documenting challenges to identifying actionable approaches linked to success for individuals as well as companies. We are excited to talk to you about this study and welcome questions from women currently working in STEM careers in particular. We'll be on at 4pm ET (21 UT). Ask Us Anything! submitted by /u/AskScienceModerator [link] [comments]

The new kilogram definition seems complex. Why not define it in terms of the mass of a proton? Posted: 16 Nov 2018 07:19 AM PST The kilogram is being redefined. https://www.vox.com/science-and-health/2018/11/14/18072368/kilogram-kibble-redefine-weight-science The new definition is in terms of the Planck constant and seems complex (or at least not very elegant.) Why isn't the kilogram defined as something simpler like the mass of X number of protons? submitted by /u/zerovoid0 [link] [comments]

What determines how opaque or transparent a material is, on a molecular level? Posted: 16 Nov 2018 04:16 AM PST Like what makes water clear? What makes milk white? How can something even be transparent? submitted by /u/turkishjedi21 [link] [comments]

Why some materials, like diamonds, who are form in extremely high pressures don't recover its initial form when they are at 1 atmosphere of preassure? Posted: 16 Nov 2018 03:03 AM PST submitted by /u/HronkChaos [link] [comments]

With current nuclear reactors' consumption, how much "fuel" do we have left? Posted: 15 Nov 2018 11:51 PM PST Hi, I am part of those that think that the best way to reduce global warming and keep our ways of life while not polluting the environment too much is to commit to nuclear fission. I know that there are problems with waste, but I consider them insignificant compared to global warming. I know that there are renewables, but to use them in the next 10 years, we might (not knowledgable enough) have to drastically reduce our consumption. So with that in mind, I am an advocated of nuclear fisison. A colleague of mine said that there are only a few decades of fissable material left to make sure current reactors can keep running. This seems like a difficult topic for me to get the right data. So, is that true that we are also running out of fuel for our nuclear reactors? If not, could the world run mostly on nuclear? submitted by /u/Voi69 [link] [comments]

An impact crater has been recently discovered in Greenland that may have been caused by a 1-mile-wide asteroid. If an analogous asteroid were discovered heading towards Earth, would we be able to pinpoint in advance an exact impact location? How much time in advance? Posted: 16 Nov 2018 01:24 AM PST submitted by /u/sorryDontUnderstand [link] [comments]

If suppressors reduce the firing noise in guns, and make them go a little further, then why do armies not use them more often? Posted: 15 Nov 2018 06:14 PM PST Is it more costly? Or is it just useless/has its flaws? submitted by /u/NawarFox [link] [comments]

How do people exactly measure absurdly high temperatures, like 100 million? Or are they just estimating it? Posted: 15 Nov 2018 07:09 PM PST Edit: Here's a news post... https://www.abc.net.au/news/2018-11-15/china-attempts-to-create-an-artificial-sun/10495536 submitted by /u/RevileAI [link] [comments]

Can someone help me find the spectra of the TRAPPIST-1 Exoplanets? Posted: 16 Nov 2018 02:00 AM PST Hello, I am looking for the data for the TRAPPIST-1 system spectra for the exoplanets. I have seen many plots of this data, but cannot find the raw numbers, which I need for a college project. If anyone could help my find the numerical values for these spectra, it would be most appreciated. submitted by /u/CottonMajyk [link] [comments]

Do we lose radio communication with Mars when it is behind the moon? Posted: 15 Nov 2018 07:54 PM PST submitted by /u/1pointtwentyone [link] [comments]

Is sustainable muon catalysed fusion possible in the upper atmosphere where muons are produced due to cosmic waves hitting the upper atmosphere? Posted: 16 Nov 2018 01:51 AM PST submitted by /u/TuftedCat [link] [comments]

Are there El Niño/La Niñas on other bodies of water, other than the Pacific Ocean? Posted: 15 Nov 2018 07:43 PM PST Thanks. submitted by /u/baracuda68 [link] [comments]

What kind of batteries did the Apollo astronauts have in their backpacks? Posted: 15 Nov 2018 06:36 PM PST submitted by /u/deanoplex [link] [comments]

If language, music, and talking are important for brain development (not just language development), do brains of deaf babies develop differently? Posted: 15 Nov 2018 03:24 PM PST submitted by /u/ilovestalepopcorn [link] [comments]

I can't seem to grasp my head around the concept of rest mass how is it different from the mass we know? Posted: 15 Nov 2018 06:33 PM PST submitted by /u/golDzeman [link] [comments]

Are there more elements to be discovered on earth? Do we think we've discovered every element that exists on this planet,or will the periodic table continue to expand? Posted: 16 Nov 2018 01:48 AM PST Also, when was the last element on the table discovered? There has to be some that we haven't discovered on other planets or in other galaxies at least, right? submitted by /u/QuickKev [link] [comments]

When splitting water molecules by electrolysis, how would sperate the hydrogen and oxygen? Posted: 15 Nov 2018 05:52 PM PST submitted by /u/jmonster24 [link] [comments]

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How are quantum computers actually implemented?

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• How are quantum computers actually implemented?
• Stupid question, If there were metal buildings/electronics more than 13k+ years ago, would we be able to know about it?
• How does the new kilogram work?
• How deep does dirt go?
• Where do meteorites gain their velocity?
• A recent news article states that a plasma's temperature, for self-sustaining fusion, needs to be around 100 million C - but the core of the Sun is only around 15 million C. Why does a plasma's temperature need to be so high for fusion to work? And why not for the Sun?
• Is it possible for a particle to be made of only neutrons?
• Can a recessive gene evolve into a dominant one after generations?
• How come our bodies can break down so many proteins but keratin is a big no no?
• How do atoms 'share' electrons?
• Could there be a new quantum field that is not interacting in its vacuum state, but would be given high enough excitation?
• What happens during elastic electron collisions with a surface?
• Can dogs (and cats) tell that human babies belong to "their" human?
• After a vasectomy, where does the stem go after an ejaculation?
• Why are Lauric-based surfactants preferred instead of Oleic/Stearic-based surfactants?
• How does dark matter affect galactic orbital speed?
• What happens to photons when they get absorbed by particles? What do they transform into? And do the particles ever get saturated?

How are quantum computers actually implemented? Posted: 14 Nov 2018 09:26 AM PST I have basic understanding of quantum information theory, however I have no idea how is actual quantum processor hardware made. Tangential question - what is best place to start looking for such information? For theoretical physics I usually start with Wikipedia and then slowly go through references and related articles, but this approach totally fails me when I want learn something about experimental physics. submitted by /u/kubazz [link] [comments]

Stupid question, If there were metal buildings/electronics more than 13k+ years ago, would we be able to know about it? Posted: 15 Nov 2018 12:14 AM PST My friend has gotten really into conspiracy theories lately, and he has started to believe that there was a highly advanced civilization on earth, like as highly advanced as ours, more than 13k years ago, but supposedly since a meteor or some other event happened and wiped most humans out, we started over, and the only reason we know about some history sites with stones buildings, but no old sites of metal buildings or electronics is because those would have all decomposed while the stone structures wouldn't decompose I keep telling him even if the metal mostly decomposed, we should still have some sort of evidence of really old scrap metal or something right? submitted by /u/TwitchyFingers [link] [comments]

How does the new kilogram work? Posted: 14 Nov 2018 10:38 PM PST Scientists are voting to redefine the kilogram using physical constants rather than the arbitrary block of metal we use now. Here's an article about it: https://www.vox.com/science-and-health/2018/11/14/18072368/kilogram-kibble-redefine-weight-science From what I understand, this new method will allow us to generate "reference" kilogram masses by using fancy balances anywhere in the world. I'm confused how we can use the constant speed of light to do this. The speed of light in a vacuum is constant, but doesn't the time component change depending on the local gravity and speed? Wouldn't that mean that reference masses would vary slightly, depending on the gravity and the speed at that particular facility, according to general and special relativity? Is this canceled out somehow, or is it just so small that it's still an improvement in precision over what we have now? submitted by /u/halberdierbowman [link] [comments]

How deep does dirt go? Posted: 14 Nov 2018 05:25 PM PST I am imagining minecraft, so this is probably a stupid question. But if I went to my backyard and got a shovel, how far would I go before I hit stone? Or is there even stone under? Earth science in high school covered types of rocks and and layers n stuff, but doesn't tell us where things are. Are the tectonic plates made of rock? The education system has failed me, please help E: so from what I'm getting - my education on earth science sucked. I loved physics and biology (chemistry sucked), but my "earth science" class was just "here are types of rocks. Here are the planets, good luck". From what I understand- it varies, bedrock isnt under 60+meters of stone as some childhood video games led me to believe, but could be 10-40ft below dirt. I think in my area, there is clay under me (my dad dug 6' holes for fence posts, and only got thick red stuff [probably clay]). Thank you for all the help, I was up late at night and semi delerious when I got on this thought path, but I appreciate you all taking the time to answer :) submitted by /u/Lorde_Farquad [link] [comments]

Where do meteorites gain their velocity? Posted: 14 Nov 2018 11:23 PM PST submitted by /u/BeUnconventional [link] [comments]

A recent news article states that a plasma's temperature, for self-sustaining fusion, needs to be around 100 million C - but the core of the Sun is only around 15 million C. Why does a plasma's temperature need to be so high for fusion to work? And why not for the Sun? Posted: 14 Nov 2018 02:38 PM PST The article in question is here: https://www.abc.net.au/news/2018-11-15/china-attempts-to-create-an-artificial-sun/10495536. ​ I get that the temperature must be high enough to generate a plasma, but to the best of my knowledge plasmas start forming in the 10,000 C range. submitted by /u/Niccolo101 [link] [comments]

Is it possible for a particle to be made of only neutrons? Posted: 14 Nov 2018 07:01 PM PST I've recently learned the functions and such of an atom, and was wondering if it would be possible for a particle to be made of only neutrons, and what would be the implications of such a particle? submitted by /u/AnxiousMirror [link] [comments]

Can a recessive gene evolve into a dominant one after generations? Posted: 14 Nov 2018 04:35 PM PST submitted by /u/Ccaves0127 [link] [comments]

How come our bodies can break down so many proteins but keratin is a big no no? Posted: 14 Nov 2018 04:34 PM PST submitted by /u/conziskewl [link] [comments]

How do atoms 'share' electrons? Posted: 14 Nov 2018 12:31 PM PST I understand that they do it to gain stability, but how does it actually happen? As I understand it, electrons orbit around a nucleus, so how do electrons orbit around two nuclei at the same time? submitted by /u/Grits- [link] [comments]

Could there be a new quantum field that is not interacting in its vacuum state, but would be given high enough excitation? Posted: 14 Nov 2018 04:30 PM PST submitted by /u/Somelurkereh [link] [comments]

What happens during elastic electron collisions with a surface? Posted: 14 Nov 2018 04:29 PM PST I'm confused with what happens during elastic electron collisions with a surface. An example of what I am talking about would be back-scattered electrons in an SEM. There are representations of this I have seen that shows an electron "sling-shotting" around the nuclei, but this is an incorrect representation because that would cause the electron to produce bremsstrahlung x-rays, thus the interaction would not be an elastic collision. I was told that the electron "bounces" off the nuclei like a ball bouncing off a wall, but that explanation does not satisfy me. What force repels the electron away from the nuclei? Is it just electrostatic forces? Would an electron getting that close to the nuclei violate the pauli exclusion principle? submitted by /u/PopularPlanet [link] [comments]

Can dogs (and cats) tell that human babies belong to "their" human? Posted: 14 Nov 2018 11:05 AM PST Like, if parents bring home their newborn, can the dog/cat smell the newborn and "know" that the baby came from the parents? I've tried googling it, and a lot of what I've found is specifically about how to introduce your pets to your new baby/do animals know what a baby is, and while that's interesting, that's not quite what I'm looking for? I assume that a human baby would, presumably, smell like whoever is holding them most often, but do humans have an inherent "smell", and is that passed on in a way that dogs/cats can understand to the best of their abilities? submitted by /u/loracarol [link] [comments]

After a vasectomy, where does the stem go after an ejaculation? Posted: 14 Nov 2018 08:46 AM PST If the tube it self Is cut and there is now a open tube that's sitting in the sac, then the sperm would still come out but only into the sac wouldn't it? And even is it was closed somehow, then wouldn't a buildup of sperm cause a problem? Eventually an extremely high amount of pressure of the sperm would break through whatever closed the tube. And then you'd be back to the situation of having sperm floating in the sac. submitted by /u/Noahwar97 [link] [comments]

Why are Lauric-based surfactants preferred instead of Oleic/Stearic-based surfactants? Posted: 14 Nov 2018 08:38 AM PST In the cosmetics industry, more than 70% of personal soaps that are used today have sodium lauryl sulfate or sodium laureth sulfate as the main cleansing agent, but why is that the case? Lauric acid based soaps are often derived from tropical plant sources, like coconut and palm oils. I have seen next to no information about the cleansing power or just the general properties of ethoxylated oleic and stearic based cleansers. Oleic acid is the primary acid that can be found in plenty of oils, like soybean, canola, olive etc. Stearic acid can be made from oleic acid by hydrogenation, turning it from an unsaturated to a saturated fatty acid, giving it more cleansing power. Wouldn't it be more economical and less consuming to use those fatty acids in soap making instead of lauric acid based soaps? And as a added question, why is there so little information on oleic based surfactants? submitted by /u/M_An_M [link] [comments]

How does dark matter affect galactic orbital speed? Posted: 14 Nov 2018 06:03 AM PST I've been reading about the history of the Dark Matter theory and the evidence for it due to galactic spin speeds. The way it is phrased in many articles is "without dark matter the stars would spin away, and the galaxy would rip apart." I understand this, but wouldn't this simplistic version of the evidence be answered by simply increasing the mass of the Galactic Core? My current understanding is that the stars don't just orbit faster than expected, but the Acceleration Curve (the amount the orbital speed decreases with distance from the center) is shallower than expected, i.e. stars distant from the center move too fast relative to stars near the center for any possible mass of the Galactic Core. Is that correct? Finally, if the above is true, I find it hard to visualize. As a hypothetical, if dark matter were visible dust would that mean the Galaxy would be a big dust cloud with a few stars speckled in it and the whole thing would be rotating at a more constant speed because the gravitation of the giant dust cloud would offset the mass of the Galactic Core? I guess I don't understand why having mass everywhere would make the whole thing spin faster unless the center is also more massive. If, for example, our solar system was filled with gas or dust, would we be orbiting the Sun at a noticeably different speed? I'd almost expect the opposite. Forgetting about friction, wouldn't the gas past the orbit of the Earth be slowing it's orbit down, not speeding it up? submitted by /u/ovideos [link] [comments]

What happens to photons when they get absorbed by particles? What do they transform into? And do the particles ever get saturated? Posted: 14 Nov 2018 10:26 AM PST submitted by /u/smellybrownfinger [link] [comments]

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Why is there a time-energy uncertainty relation when time is not an operator in Quantum Mechanics?

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• Why is there a time-energy uncertainty relation when time is not an operator in Quantum Mechanics?
• If there is an infinite amount of natural numbers, and one is chosen at random, mathematically the probability of choosing that number should be 0. Why can the number still be chosen?
• How are satellite orientated in space?
• Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science
• How do we measure the temperature of stars and quasars up to 100,000,000°? How do we know it's that hot?
• How does a high pass filter (RC) still pass high frequencies when actively charged to input voltage by the DC component?
• How do 17 year life cycle cicadas "keep track" of the year count to know when to emerge?
• How do cell regeneration rates vary among animals? Would it take a dog longer than a cat or human to replace most of the cells in its body?
• Can the CBD part of cannabis influence your reaction time?
• Besides preventing fires, what impacts do fire retardants dropped from planes onto wildfires have on the environment?
• Why do epithelial cells line the outsides of organs that never experience external stimuli?
• If I were to throw or shoot something downwards at a velocity greater than its terminal velocity, would it decelerate until it reached the terminal?
• How does an extended release pill work?
• How are old films restored?
• How come there is no motion blur in google street view photos?
• Why are some medicines more bioavailable than others before or after a meal?
• What does it mean to "burn out a motor," exactly?
• creating better water pressure with a siphon?
• Where did all the dirt on top of dinosaur fossils come from?

Why is there a time-energy uncertainty relation when time is not an operator in Quantum Mechanics? Posted: 13 Nov 2018 10:58 PM PST The Heisenberg Uncertainty Principle is based on the property of the commutators of two Hermitian operators. But time is not an operator in Quantum Mechanics, so what gives? How fundamental is this relation? Where does it come from and what does it mean? submitted by /u/lAPPYc [link] [comments]

If there is an infinite amount of natural numbers, and one is chosen at random, mathematically the probability of choosing that number should be 0. Why can the number still be chosen? Posted: 13 Nov 2018 01:57 PM PST It seems fairly reasonable that the probability cannot be 0, as if you were to sum up all the probabilities, you have to get one as a result, while the sum 0 + 0 + 0 + ... + 0 + 0 (with an infinite amount of zeros) can never have any other value than 0. But, the probability of choosing a specific number should be 1/(amount of natural numbers), which is 0, since the amount of natural numbers is infinite. Is it something about how the limit of 1/x for x -> infinity works, or am I missing something else entirely? submitted by /u/Scutman [link] [comments]

How are satellite orientated in space? Posted: 14 Nov 2018 12:39 AM PST If down is relative to the ground for us how is positioning treated in space? submitted by /u/Biboomer97 [link] [comments]

Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science Posted: 14 Nov 2018 07:11 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! submitted by /u/AutoModerator [link] [comments]

How do we measure the temperature of stars and quasars up to 100,000,000°? How do we know it's that hot? Posted: 13 Nov 2018 05:53 PM PST submitted by /u/Obdurodonis [link] [comments]

How does a high pass filter (RC) still pass high frequencies when actively charged to input voltage by the DC component? Posted: 14 Nov 2018 06:26 AM PST I have an understanding of why capacitors block DC and pass AC but i don't fully understand how this works with a mixed signal input on a parallel plate capacitor, AC is passed due to low plate charge accumulation but with a mixed signal the plate should remain charged and block AC too, can anyone help me to understand this? submitted by /u/OnAPaleNarwhal [link] [comments]

How do 17 year life cycle cicadas "keep track" of the year count to know when to emerge? Posted: 14 Nov 2018 05:59 AM PST submitted by /u/Malak77 [link] [comments]

How do cell regeneration rates vary among animals? Would it take a dog longer than a cat or human to replace most of the cells in its body? Posted: 13 Nov 2018 07:22 PM PST submitted by /u/dance_apoptosistic [link] [comments]

Can the CBD part of cannabis influence your reaction time? Posted: 14 Nov 2018 01:26 AM PST Hello, I've been reading up on some of the functions of the endocannabinoid system, but I haven't found anything on all of the internet having to do something with CBD? I find plenty of experiments or scientific works talking about the influence of THC and it's effects, while with CBD I only find things such as it's healing effects and nothing about reaction time, nothing with the endocannabinoid system about reaction time either. Excuse my grammar, simply an article would also be of great help :) submitted by /u/darthvale [link] [comments]

Besides preventing fires, what impacts do fire retardants dropped from planes onto wildfires have on the environment? Posted: 13 Nov 2018 02:56 PM PST In California right now, fire planes are dropping fire retardants to help manage the wildfire burns. Obviously, one impact this has on the environment is minimizing the amount of fire. What other environmental impacts are there? Does it hurt or help animals or plants, air or soil? *I added "chemistry" flair since it's a chemical, but I imagine this involves other areas too... submitted by /u/forcedguy [link] [comments]

Why do epithelial cells line the outsides of organs that never experience external stimuli? Posted: 13 Nov 2018 05:43 PM PST Why are some cells called endothelial and some epithelial? I read that epithelial cells are cell that cover outsides of the organs and body. Lot of organs never experience the external stimuli yet they have epithelial tissue. Is my understanding of epithelial tissue wrong or is there more to it? submitted by /u/karrablaster123 [link] [comments]

If I were to throw or shoot something downwards at a velocity greater than its terminal velocity, would it decelerate until it reached the terminal? Posted: 13 Nov 2018 03:58 PM PST submitted by /u/rygy267 [link] [comments]

How does an extended release pill work? Posted: 13 Nov 2018 04:27 PM PST For example I'm on a pill that is 100mg ER, so is the pill 100mg and it just gives you small amount over a certain time, or is the pill alot more, and gives you a constant 100mg in your system? submitted by /u/bigz3012 [link] [comments]

How are old films restored? Posted: 13 Nov 2018 02:27 PM PST I just saw a thing about a documentary being restored from WWII in colour, and it made me wonder how exactly they do that? Edit: not sure if that's the right tag but I'm just curious about this... submitted by /u/toy_machine21 [link] [comments]

How come there is no motion blur in google street view photos? Posted: 13 Nov 2018 02:12 PM PST So i was just going down some random highway on Google Street View and started thinking about if the car had to stay under a certain speed to get a good quality photo and then I realized that none of the photos were blurry even though the pictures were taken at or above 50mph. this may be a very simple trick that most photographers know but I don't know very much about cameras so its something that I'm unable to figure out. submitted by /u/fourkcchiefs [link] [comments]

Why are some medicines more bioavailable than others before or after a meal? Posted: 13 Nov 2018 05:43 PM PST submitted by /u/numquamsolus [link] [comments]

What does it mean to "burn out a motor," exactly? Posted: 13 Nov 2018 07:32 AM PST I have an ice cream maker and the manual has several warnings about not letting it run for too long. In particular, I'm not supposed to let the ice cream freeze to the point where it stops the mixing blade from moving since this will cause damage to the motor. So today I've done that, and there's strong burnt smell coming off of it now. Very distinct. It still seems to work, but I'm wondering how much damage I've done. submitted by /u/PM_your_cats_n_racks [link] [comments]

creating better water pressure with a siphon? Posted: 13 Nov 2018 08:54 AM PST It seems crazy that this isn't something that's done regularly, so I bet it won't work, but: in an attempt to get more water pressure through a pipe/hose than would happen if the hose is hooked to the bottom outlet of a tank, what if I were to create a siphon, but put the siphon hose way up high? As though the side of the tank were at the max (10 meters). Would the water coming out the hose, just slightly below the floor of the tank have MORE pressure than it would if it was just flowing out? That is, would the drop in height from the 2nd half of the hose create more PSI? Practical scenario: a tank just slightly above a house that needs good pressure. hang a hose a couple stories up in a tree, create a siphon. would the house get better water pressure? submitted by /u/Tyssniffen [link] [comments]

Where did all the dirt on top of dinosaur fossils come from? Posted: 13 Nov 2018 03:10 PM PST submitted by /u/Upstairs_Cow [link] [comments]

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