Is it true that even if Antarctica were to melt it wouldn't cause flooding due to water displacement?

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• Is it true that even if Antarctica were to melt it wouldn't cause flooding due to water displacement?
• what are the large voltages described in particle accelerators measured against?
• Why do rivers like the Nile and Amazon not form large canyons like the Colorado river did with the Grand Canyon?
• Say you have two trumpet players facing each other. If their bells are exactly opposite each other and if they play the exact same pitch, is there a distance apart they can stand to achieve destructive interference (and therefore cancel out the noise)?
• Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology
• Why is fire the color it is?
• How do impact craters on icy bodies like Callisto/Europa differ from rocky bodies like the moon?
• Why are there nucleoside antiviral drugs but no nucleoside antibiotics?
• What's the difference between encrypting a file with AES vs archiving it with a password?
• Is it harder for a blind person to fall asleep in the presence of light, even though they can't actually see it?
• Are uncertainty calculations faulty?
• When its said that you cant measure both the speed and the position of an electron, does that mean that the information doesnt exist, or that it does exist, but its simply not possible to measure it?
• To what extent does Jupiter protect Earth from comet impacts?
• [Biology] Can acquired immunity to one virus confer immunity to a different virus?
• Physicists, how can this universe have 26 dimensions?
• What would the implications for Relativity and QM be, if a particle was found to be travelling at faster than the speed of light?
• Will the Great Lakes water level rise if the sea level rises due to global warming?
• Why are three of the five platonic solids made up of triangles?
• Are there more/different platonic solids in non-Euclidean geometries?
• Has the quantum entanglement phenomenon "Spooky Action at a Distance" been proven, or is it just theoretical? Also, how do particles become entangled in the first place?
• Time Dilation - If I go the speed of light, time changes for me. But how do we know what the other extreme looks like and is measured against? What is ZERO speed and what is it measured relative to?
• How does a black hole "destroy" particles bound by the Pauli exclusion principle?
• How do we perceive higher order derivatives of motion?

Is it true that even if Antarctica were to melt it wouldn't cause flooding due to water displacement? Posted: 23 Mar 2016 08:36 AM PDT I can't remember the exact question, but it had to do with the melting of Antarctica or something there that despite it melting water levels wouldn't increase because of water displacement. submitted by /u/iSh0tYou99 [link] [comments]

what are the large voltages described in particle accelerators measured against? Posted: 24 Mar 2016 07:21 AM PDT in press releases from the LHC, proof of the higgs was demonstrated by evidence occurring at huge voltages. what potential differences are these particles being measured against? and we read claims of gigantic voltages made in reference to the overall power of particle accelerators. what source are these voltages measured against? submitted by /u/Shellback1 [link] [comments]

Why do rivers like the Nile and Amazon not form large canyons like the Colorado river did with the Grand Canyon? Posted: 23 Mar 2016 05:48 PM PDT Are they just newer than the Colorado river? Or is the ground underneath the rivers not as conducive to erosion? submitted by /u/Last_Jedi [link] [comments]

Say you have two trumpet players facing each other. If their bells are exactly opposite each other and if they play the exact same pitch, is there a distance apart they can stand to achieve destructive interference (and therefore cancel out the noise)? Posted: 23 Mar 2016 09:44 PM PDT submitted by /u/waveparticleduality [link] [comments]

Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology Posted: 23 Mar 2016 08:02 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! submitted by /u/AutoModerator [link] [comments]

Why is fire the color it is? Posted: 23 Mar 2016 11:08 PM PDT I know that if you burn certain elements it can make fire a number of colors, but why is it normally the orangeish-yellow color we know it as? submitted by /u/Alfredo412 [link] [comments]

How do impact craters on icy bodies like Callisto/Europa differ from rocky bodies like the moon? Posted: 23 Mar 2016 10:04 AM PDT I've been learning about the cratering process on the moon, and how craters transition from simple to complex craters. How does this process or the cratering process in general differ on icy bodies? Are they expected to be the same? submitted by /u/WheresTheLeakMam [link] [comments]

Why are there nucleoside antiviral drugs but no nucleoside antibiotics? Posted: 23 Mar 2016 11:03 PM PDT Plenty of nucleosides have been designed that can selectively inhibit viral DNA polymerases without interfering with human ones. Given the wide evolutionary separation between humans and bacteria, shouldn't it be possible to also develop nucleoside antibiotics? submitted by /u/JohnAlanTucker [link] [comments]

What's the difference between encrypting a file with AES vs archiving it with a password? Posted: 23 Mar 2016 04:07 PM PDT I read that it takes billions and billions of years to crack a file encrypted with AES. I downloaded this program called AES Crypt, which encrypts a file with a password added to it. So what's the difference between that and an archive program like winrar or winzip, which you can also add a password.If a password is required to access the AES encrypted data file and a zip/rar file, shouldn't they both be of the same strength? If you brute-force attack both types of files, shouldn't you crack them at the same amount of time? Thanks. submitted by /u/butterballmd [link] [comments]

Is it harder for a blind person to fall asleep in the presence of light, even though they can't actually see it? Posted: 23 Mar 2016 02:37 PM PDT submitted by /u/OnceAPirate [link] [comments]

Are uncertainty calculations faulty? Posted: 23 Mar 2016 06:45 AM PDT In school, we have been taught that with division and multiplication of numbers with uncertainties, you must convert the absolute uncertainty into a percentage uncertainty. You can then solve the problem and add up the uncertainties to obtain a final uncertainty. However, a problem arises with the equation 10+-1/2+-1. Regular uncertainty calculation would suggest to convert the uncertainties into 10+-10%/2+-50%, with the result then being 5+-60%. The problem with this answer is that the maximum answer is actually 11 (11/1), which is far above the uncertainties maximum of 8. And the lowest result based on the obtained answer is 2, but the lowest actual result is 3 (9/3). Am I doing something wrong, or are uncertainty calculations faulty? Thankyou for any help, and sorry for the wall of text, I thought it was necessary to explain my situation. submitted by /u/Behemoth1999 [link] [comments]

When its said that you cant measure both the speed and the position of an electron, does that mean that the information doesnt exist, or that it does exist, but its simply not possible to measure it? Posted: 23 Mar 2016 01:45 PM PDT submitted by /u/sourc3original [link] [comments]

To what extent does Jupiter protect Earth from comet impacts? Posted: 23 Mar 2016 05:43 PM PDT To what extent does Jupiter block or deflect celestial interlopers from colliding with Earth? Would the chances of intelligent life surviving or evolving on Earth decrease if Jupiter didn't exist? If so, could we extrapolate this to hypothesize that exoplanet systems lacking a layout similar to ours (inner terrestrials, outer gas giants) would be less likely to harbor intelligent civilization due to the vulnerability of terrestrial planets to frequent bombardment? submitted by /u/careersinscience [link] [comments]

[Biology] Can acquired immunity to one virus confer immunity to a different virus? Posted: 23 Mar 2016 06:48 PM PDT For example, cold virus X and cold virus Y are similar, so fighting off X will make you immune to Y. submitted by /u/SamuraiSpaceSquid [link] [comments]

Physicists, how can this universe have 26 dimensions? Posted: 23 Mar 2016 02:40 PM PDT What does this even mean, as relating to our subjective experience of the world? Are we like 2d beings living on a piece of paper, unaware of reality because all that matters is survival on that sheet of paper? Would that be an adequate way of looking at it? submitted by /u/thebarrelfactory [link] [comments]

What would the implications for Relativity and QM be, if a particle was found to be travelling at faster than the speed of light? Posted: 23 Mar 2016 10:02 PM PDT I know that recently (January this year) experiments at CERN seemed to show neutrinos travelling a fraction faster than the speed of light. What would this mean for our current understanding of the laws of physics? submitted by /u/operator_warwolf [link] [comments]

Will the Great Lakes water level rise if the sea level rises due to global warming? Posted: 23 Mar 2016 12:49 PM PDT I have seen a lot of interactive maps lately show how coastal areas will be affected due to sea level rise. What I have not seen is how Great Lakes coastal areas will be affected by this rise. Will that water will funnel through the St. Lawrence Seaway? Do cities like Chicago, Detroit, Cleveland, etc. need to prepare? submitted by /u/derderder1 [link] [comments]

Why are three of the five platonic solids made up of triangles? Posted: 23 Mar 2016 11:19 AM PDT submitted by /u/zekromNLR [link] [comments]

Are there more/different platonic solids in non-Euclidean geometries? Posted: 23 Mar 2016 09:25 AM PDT This video describes why there are only 5 platonic solids in 3 dimensions: using a construction algorithm that starts with some regular polygons sharing edges in the plane, and then bending along the edges into the third dimension to "close" the solid, we can only get so many solids before we can't close or fit all the polygons in the plane. But in non-Euclidean geometry, regular polygons have different internal angles. Can a different construction create new solids? submitted by /u/Veggie [link] [comments]

Has the quantum entanglement phenomenon "Spooky Action at a Distance" been proven, or is it just theoretical? Also, how do particles become entangled in the first place? Posted: 23 Mar 2016 12:28 PM PDT submitted by /u/quantumized [link] [comments]

Time Dilation - If I go the speed of light, time changes for me. But how do we know what the other extreme looks like and is measured against? What is ZERO speed and what is it measured relative to? Posted: 23 Mar 2016 08:34 AM PDT Basically my question is, if I go the speed of light away from the earth to a distant object, then why does my clock slow down and not someone on earth? A person on earth would appear to be moving away from me as fast as I am moving away from them. Nothing is NOT moving in the universe as I understand it, but is there such thing as NOT moving through space at all and experiencing time at its most slow (the opposite extreme of my Pluto traveler)? If everything is moving, how do we know what NOT moving would be, and relative to what? submitted by /u/JoaquinDPlanque [link] [comments]

How does a black hole "destroy" particles bound by the Pauli exclusion principle? Posted: 23 Mar 2016 01:02 PM PDT It is to my understanding that fermions can't be at the same point in space at the same time, so how is it possible for a black hole to bring so much of then in the same place without violating the principle? This principle is still very new to me so I might understand it wrong. If so, can I have a clarification of how the principle work? submitted by /u/Apotatos [link] [comments]

How do we perceive higher order derivatives of motion? Posted: 23 Mar 2016 02:47 PM PDT While it's impossible to "feel" velocity, we feel acceleration all the time. How do we perceive* jerk and higher order derivatives of motion? What are the physiological effects? *Perceive can mean feeling it ourselves or seeing it. submitted by /u/ayane_m [link] [comments]

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When did "sleeping" evolve? What are the most primitive organisms that we know of that sleep?

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• When did "sleeping" evolve? What are the most primitive organisms that we know of that sleep?
• Why do we have trouble instantly counting larger groups of objects (say, 7+), while we can instantly identify the number in smaller groups?
• Do dreams happen in real-time?
• Is the Higgs field constant throughout the entire universe? Could any fluctuations (Higgs waves) cause objects to become more or less massive?
• Does fusion occur within a black hole?
• Will keeping jugs of water in my refrigerator save energy?
• Why don't heart muscles seemingly get tired?
• Why aren't planets tidally locked to the sun, the way moons are tidally locked to their planet?
• Why is FADH formed in the krebs cycle, instead of more NADH?
• If EM waves are propagated by photons, does that mean that gravitational waves are propagated by gravitons?
• Is there such a thing as a second order integral? I know you can take multiple derivatives. But does it go the other way around and if so, what do they do/mean?
• Chem Eng undergrad here. I very often see process flow diagrams just split the streams, in order to divide the material flow. What is the working mechanism in real life that facilitates this? (Examples in text)
• How come giving someone with type A blood a transfusion of type O blood is safe, but giving type A blood to a patient with type O blood could kill them?
• Can people who have type 1 diabetes mellitus also develop type 2 as a result of an unhealthy lifestyle? If so, what are their treatment options?
• Does the sense of balance and orientation require both inner ears to function properly or is there redundancy?
• Does optical reflectance of a substance depends on any factors?
• Would the discovery of the graviton (or something similar) force us to get rid of the geometric model of gravity via space time curvature? Or would both pieces be needed for a universal theory?
• Can we still see depth when covering one eye?
• What applications does CRISPR/Cas9 have with respect to cord blood?
• How do forest fires start 'naturally'?

When did "sleeping" evolve? What are the most primitive organisms that we know of that sleep? Posted: 22 Mar 2016 10:35 AM PDT Was reading an askreddit thread about "weird and common things" and sleeping is brought up. It still seems so strange to me that organisms evolved the need for sleep. For one thing it makes us completely vulnerable to predators. Do we have any idea when this habit first appeared in the evolutionary timeline? submitted by /u/gargoyle_mayonnaise [link] [comments]

Why do we have trouble instantly counting larger groups of objects (say, 7+), while we can instantly identify the number in smaller groups? Posted: 22 Mar 2016 09:40 PM PDT submitted by /u/fickleburger [link] [comments]

Do dreams happen in real-time? Posted: 22 Mar 2016 10:11 AM PDT If in my dream, I walk for 30 seconds, does 30 seconds actually pass in real life? Or is there no correlation? Hopefully this makes sense! I'll clarify if needed submitted by /u/DaanishS [link] [comments]

Is the Higgs field constant throughout the entire universe? Could any fluctuations (Higgs waves) cause objects to become more or less massive? Posted: 22 Mar 2016 06:34 PM PDT submitted by /u/lucaspon [link] [comments]

Does fusion occur within a black hole? Posted: 22 Mar 2016 02:36 PM PDT It seems like a black hole would fuse the matter it takes in into a super huge single nucleus, no? Or am I completely off here? submitted by /u/plazmablu [link] [comments]

Will keeping jugs of water in my refrigerator save energy? Posted: 22 Mar 2016 06:14 PM PDT I live alone for the most part. My fridge is maybe half full at most. Would filling the empty space with cold water from my tap in jugs save energy? Most answers I've found don't have enough information for me to accept as answers. They assume that you're using only one or two jugs or using small bottles to fill gaps. I'm talking 4 or 5 maybe 6 gallon jugs. Also, they assume cooling from room temperature but the water from the tap is already really cold. So let's assume the fridge is 12 gallons and it's half filled with food the other half is gallons of water. The water is 50° F before it goes in the fridge. Would this save a significant amount of energy over a month or year? I don't how how big fridge is. I rent, its not mine. I don't pay utilities, so I don't really care what the cost is just energy savings. After writing this, would this be a better question for /r/theydidthemath ? submitted by /u/sashslingingslasher [link] [comments]

Why don't heart muscles seemingly get tired? Posted: 22 Mar 2016 11:22 PM PDT Is the composition different from our other muscles that makes it unique, or does being in the direct blood flow replenishes it somehow? submitted by /u/Sign_of_Zeta [link] [comments]

Why aren't planets tidally locked to the sun, the way moons are tidally locked to their planet? Posted: 22 Mar 2016 03:35 PM PDT Tidal locking aka 'synchronous rotation', is when bodies have the same rotation and revolution rate compared to their partner. The result is the same side faces the planet at all times (picture the Earth and its moon). Nearly all of the natural satellites in our solar system are tidally locked to their respective planet. None of the planets are. Why is this? submitted by /u/TheBiggestZander [link] [comments]

Why is FADH formed in the krebs cycle, instead of more NADH? Posted: 22 Mar 2016 10:04 AM PDT So, after learning about the stages of cellular respiration, I was wondering about the uses of FADH. it makes less ATP per molecule, so why is it made during the cycle instead of more NADH? If applicable, what applications does it have in comparison? submitted by /u/Atrulyoriginalname [link] [comments]

If EM waves are propagated by photons, does that mean that gravitational waves are propagated by gravitons? Posted: 23 Mar 2016 04:28 AM PDT I was wondering why we not heard anything about the graviton with the recent discovery of gravitational waves? Doesn't wave-particle duality implicate that we have found this final force carrier? Is there any way that gravitational waves can help us find the graviton? Thanks for your help. submitted by /u/melvin_meerkat [link] [comments]

Is there such a thing as a second order integral? I know you can take multiple derivatives. But does it go the other way around and if so, what do they do/mean? Posted: 22 Mar 2016 01:13 PM PDT submitted by /u/mpmmuirhead [link] [comments]

Chem Eng undergrad here. I very often see process flow diagrams just split the streams, in order to divide the material flow. What is the working mechanism in real life that facilitates this? (Examples in text) Posted: 22 Mar 2016 07:54 AM PDT Sulfuric acid https://files.catbox.moe/flh4x1.png Air https://files.catbox.moe/f6qplb.png I'm just guessing that it's a tank/drum/container with valves that dictate how much the flowrate passes though, and the ratio of the split is controlled by the area of the orifice. But that's just a guess. submitted by /u/idontevencarewutever [link] [comments]

How come giving someone with type A blood a transfusion of type O blood is safe, but giving type A blood to a patient with type O blood could kill them? Posted: 22 Mar 2016 12:17 PM PDT submitted by /u/Kilo_G_looked_up [link] [comments]

Can people who have type 1 diabetes mellitus also develop type 2 as a result of an unhealthy lifestyle? If so, what are their treatment options? Posted: 22 Mar 2016 06:01 AM PDT I am aware that types 1 and 2 diabetes have very different causes. Type 1 is caused by autoimmune destruction of pancreatic islets and is usually treated with regular injections of insulin, and type 2 is characterised by resistance to insulin's action. If a person with type 1 diabetes were to also develop type 2 due to their lifestyle, would there be any way to treat them? submitted by /u/ProfessorPyruvate [link] [comments]

Does the sense of balance and orientation require both inner ears to function properly or is there redundancy? Posted: 23 Mar 2016 12:59 AM PDT I do understand inner ear damage in one ear can cause balance problems. But if the vestibular systems are mirrored on each side of the head, shouldn't the sense of balance remain unimpaired if only one is damaged? Or are the sensory inputs from both sides required to form the sense of balance and orientation? submitted by /u/41407 [link] [comments]

Does optical reflectance of a substance depends on any factors? Posted: 22 Mar 2016 12:19 PM PDT By factors, I mean not the angle of incident, wavelength, amplitude etc., but the temperature of the substance, the current applied through it etc. submitted by /u/invinosex [link] [comments]

Would the discovery of the graviton (or something similar) force us to get rid of the geometric model of gravity via space time curvature? Or would both pieces be needed for a universal theory? Posted: 22 Mar 2016 09:23 AM PDT A few things I'd like to clarify about my question: 1: I recognize, that no matter what, General relativity will still be useful in certain applications and will likely never be thrown away entirely. (Just like how classical mechanics is still widely used). 2: to refine my question: I studied mathematical physics for 2 years before switching to engineering, and I only took one course in relativity and one course in QM, so forgive me if there are gaps in my knowledge. But from what I understand, relativity does not require a force particle for gravity, and instead, gravity is the byproduct of spacetime curvature. This is in clear contrast to QM which (again, from my understanding) requires the existence of a force particle (often times called the "graviton"). So I guess my question is, what do most physicists currently believe the solution will "look like"? Do they believe that a graviton exists? Do they believe that gravitons DON'T exist and space time curvature causes gravity? Or do they believe some combination of space time curving and the existence of a graviton existing in a curved space time causes gravity? I know this is a VERY odd question, and I probably don't have the knowledge to properly ask it... Any help as to finding an answer OR an explanation as to why this question unanswerable would be greatly appreciated! I'd love to learn more! submitted by /u/ChrisGnam [link] [comments]

Can we still see depth when covering one eye? Posted: 22 Mar 2016 10:03 AM PDT submitted by /u/neb55555 [link] [comments]

What applications does CRISPR/Cas9 have with respect to cord blood? Posted: 22 Mar 2016 09:59 AM PDT Cord blood is harvested and stored just after birth from the umbilical cord, and is enriched in hematopoietic stem cells (HSCs). Lots of studies show that the peanut allergy (an immune response) can be transferred via peripheral blood (which contains HSCs), so that leads me to believe other immune responses could too. Could CRISPR/Cas9 applied to cord blood in vitro and subsequent injection of that blood be used to treat immune disorders where the cause is known and genetically editable? What disorders are there that fit that category? submitted by /u/skrenename4147 [link] [comments]

How do forest fires start 'naturally'? Posted: 22 Mar 2016 04:57 PM PDT I know that forest fires are a natural part of the lifecycle of an arboreal environment, but how do they start? Most lightening occurs during a rainstorm which would reduce the chance of starting a large fire. Are there other causes? submitted by /u/steezosaurus [link] [comments]

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
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How did the Great Wall of China affect the region's animal populations? Were there measures in place to allow migration of animals from one side to another?

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• How did the Great Wall of China affect the region's animal populations? Were there measures in place to allow migration of animals from one side to another?
• A common criticism of the Bohr model was that orbiting electrons should produce EM waves, lose energy, and therefore eventually spiral towards the nucleus. Similarly, if gravitational waves exist, won't the Earth/other planets fall into the Sun?
• How can you differentiate the influence of redshift from the doppler effect in an expanding universe?
• How does modern colorization of black & white film photographs or moving pictures work?
• Does acupuncture work?
• If I "butt chug" alcohol will I still fail a breathalyzer like I would if I drank the alcohol orally?
• Does the salt dropped on roads every winter have any major ecological impacts?
• Why is it so hard to predict supernovae?
• What secondary functions are there to pupil dilation/restriction?
• How did Fermat know how to postulate his Last Theorem without knowing that it works?
• If gravity is one of the weakest natural forces, then why is it the dominate force in space?
• Why is it a joke to ask someone to explain where layer 6 of the OSI model is?
• If time and space are parts of the same thing, is there equivalency in their measurement? In a 4-dimensional graph with axes X/Y/Z/T, can we say that "1 foot of distance along axis X equals 5.3 seconds of movement along axis T"?
• Why does Copper (and/or Silver) Kill Bacteria, but not so much our own cells?
• Speed of Light? I am Confused :S
• In what form is energy stored in fossil fuels?
• Is it true that we've only explored 1% of the world's oceans?
• Can genes be partially-methylated?
• Does the outer layer of our atmosphere move about in "swells" like the surface of our ocean, or is it more stable?
• I have a simple question and I'm in need of a simple answer on CRT technology screen displays, would you help?
• Is it possible to use a set of units for measurement (length, time etc.) that would negate the need for universal constants?
• Can there exist a set of cognitive tests/tasks (computerized or not) that healthy people perform fluently but (only) 'schizophrenia' patients perform with difficulties?
• If the Sun is really just a ball of gas, what keeps it from dissipating?

How did the Great Wall of China affect the region's animal populations? Were there measures in place to allow migration of animals from one side to another? Posted: 21 Mar 2016 09:38 AM PDT With all this talk about building walls, one thing I don't really see being discussed is the environmental impact of the wall. The Great Wall of China seems analogous and I was wondering if there were studies done on that. submitted by /u/numerica [link] [comments]

A common criticism of the Bohr model was that orbiting electrons should produce EM waves, lose energy, and therefore eventually spiral towards the nucleus. Similarly, if gravitational waves exist, won't the Earth/other planets fall into the Sun? Posted: 22 Mar 2016 04:50 AM PDT submitted by /u/raddaya [link] [comments]

How can you differentiate the influence of redshift from the doppler effect in an expanding universe? Posted: 22 Mar 2016 03:34 AM PDT So I learned that the redshift in the light from other galaxies is not due to relative movement, but because space itself expands in the lights way and therefore stretching the wavelength. How can you tell, that the source of the signal is maybe closer than you think and just traveling away from us, therefore having a positive influence on the redshift of the signal OR The source is traveling towards us, therefore negating a little of the redshift (expanding space) by blue shifting (due to the doppler effect)? I hope I made my question clear, however feel free to follow up. submitted by /u/SilentCastHD [link] [comments]

How does modern colorization of black & white film photographs or moving pictures work? Posted: 22 Mar 2016 05:16 AM PDT Is it merely guesswork, or are certain shades of grey able to be precisely equated to certain colors? I would imagine that would require the ability to precisely re-create the lighting scenario of the original, which seems unlikely to be possible in nearly all situations. I'm familiar with early techniques such as using paint or ink directly over a photo, but I refer more to recent techniques we see in the media, such as used in the TV series "World War II in Colour" or the recent release of colorized images from Tut's tomb. In the case of the former, I imagine there must be a fairly automated way to do this, because the number of cells involved in any moving image would be prohibitively large for most uses. In the case of the latter, where some of the objects can be readily found and examined, can the use of a few known values work to calibrate for the rest of the values, or is it pretty much all just educated guesswork? submitted by /u/keplar [link] [comments]

Does acupuncture work? Posted: 22 Mar 2016 05:33 AM PDT I have moderate back pain. I see a chiropractor once a month, but I have been looking into other ways as well. submitted by /u/gtakiller0914 [link] [comments]

If I "butt chug" alcohol will I still fail a breathalyzer like I would if I drank the alcohol orally? Posted: 21 Mar 2016 04:42 PM PDT submitted by /u/birdman1313 [link] [comments]

Does the salt dropped on roads every winter have any major ecological impacts? Posted: 21 Mar 2016 07:58 PM PDT submitted by /u/sporehed [link] [comments]

Why is it so hard to predict supernovae? Posted: 21 Mar 2016 10:37 PM PDT Inspired by Kepler's big observation of a supernova: https://www.nasa.gov/feature/ames/Kepler/caught-for-the-first-time-the-early-flash-of-an-exploding-star I understand this supernova was observed because Kepler takes a constant survey of the sky, we just have to know how to handle the data. But what makes it so difficult to know when a star is about to go? Could we ever accurately predict one and watch it as it goes nova in high detail? submitted by /u/superhelical [link] [comments]

What secondary functions are there to pupil dilation/restriction? Posted: 21 Mar 2016 05:56 PM PDT As far as I know, the pupil chiefly dilates in the dark in order to get more light (while constricting when there's too much light to protect the eye). However I've heard the pupil also dilates for many other reasons, such as during a fight-or-flight response. What other things can call pupil dilation or restriction? And why? submitted by /u/kuma-bear [link] [comments]

How did Fermat know how to postulate his Last Theorem without knowing that it works? Posted: 21 Mar 2016 05:52 PM PDT How did he know that it holds true for any number greater than 2? Proving it is another matter but how did he come up with this in the first place? submitted by /u/flitbee [link] [comments]

If gravity is one of the weakest natural forces, then why is it the dominate force in space? Posted: 22 Mar 2016 06:45 AM PDT Orbits act and react because of gravity. Stars collapse, some into black holes, because of it. Galaxies and galaxy clusters are bound by it. How is this so if it is the, or one of the, weakest natural force? submitted by /u/TexasSnyper [link] [comments]

Why is it a joke to ask someone to explain where layer 6 of the OSI model is? Posted: 21 Mar 2016 09:35 PM PDT I was reading this old thread and wasn't able to follow the joke. submitted by /u/ktool [link] [comments]

If time and space are parts of the same thing, is there equivalency in their measurement? In a 4-dimensional graph with axes X/Y/Z/T, can we say that "1 foot of distance along axis X equals 5.3 seconds of movement along axis T"? Posted: 21 Mar 2016 03:38 PM PDT In a 3-dimensional space, "distances" can be easily equated between axes. If I show you a ruler lying on a table, you can easily imagine that same distance vertically. "Five miles along a road" vs "five miles above sea level" is a simple thing for people to understand. You're moving along a different axis in space, but the distances are the same and easily calculated and compared. Can the same be said for spacetime? Does "1 foot" of distance have a temporal equivalent, along a fourth-dimensional axis? Is there a Fahrenheit/Celsius conversion equivalent, wherein "1 cm = 1.394 seconds" or something similar? submitted by /u/Nerrolken [link] [comments]

Why does Copper (and/or Silver) Kill Bacteria, but not so much our own cells? Posted: 21 Mar 2016 03:29 PM PDT The way I under stand it, the same properties that make Copper a really good conductor also make it kill bacteria pretty effectively, so why isn't it as deadly to our cells? submitted by /u/Thesleepingjay [link] [comments]

Speed of Light? I am Confused :S Posted: 21 Mar 2016 06:09 PM PDT The speed of light is currently thought to be the cosmic speed limit, and if I understand correctly from what I have read so far; nothing with mass can travel through space at or faster than the (c) speed of light also that mass = energy. What I am having trouble understanding is, how photons are able to travel at (c)? I am confused about this because; from what I've read so far, photons carry energy which is "light", and energy = mass meaning photons do have mass. But, if anything with mass cannot travel through space at or faster than (c), how are photons able to do so? Isnt this a paradox? Forgive me if i am over generalizing things but i have just started trying to really understand the basic principles. submitted by /u/srooprai [link] [comments]

In what form is energy stored in fossil fuels? Posted: 21 Mar 2016 04:05 PM PDT When you burn fossil fuels you get heat energy, but that cant just be created from nothing so what kind of energy does just plain oil have? submitted by /u/just-a-canadian [link] [comments]

Is it true that we've only explored 1% of the world's oceans? Posted: 21 Mar 2016 02:44 PM PDT Does that mean we've explored 1% of the world's oceans ever since humans have been around? submitted by /u/ozymandias737 [link] [comments]

Can genes be partially-methylated? Posted: 21 Mar 2016 04:52 PM PDT For example, can a gene be 40% methylated (turned off)? Or is it like pregnancy where you are either pregnant or you aren't? edit: I am specifically interested in the AR gene submitted by /u/Obi2 [link] [comments]

Does the outer layer of our atmosphere move about in "swells" like the surface of our ocean, or is it more stable? Posted: 21 Mar 2016 08:52 AM PDT submitted by /u/SecretlySatanic [link] [comments]

I have a simple question and I'm in need of a simple answer on CRT technology screen displays, would you help? Posted: 21 Mar 2016 04:55 PM PDT I can easily understand how the electron beams of the tube scan the screen and create the image (as per the below video https://www.youtube.com/watch?v=dnrQX0OmRio which I find trully amazing) but I really cannot understand how the colors are displayed on the screen. Any simple reply will be much appreciated cause I want to explain it to my teenager son. submitted by /u/anelc [link] [comments]

Is it possible to use a set of units for measurement (length, time etc.) that would negate the need for universal constants? Posted: 21 Mar 2016 04:08 PM PDT We currently define a meter as a set certain length, and a second as a set certain amount of time. This means in formula like the law of gravity, we must use the Gravitational constant to make the math work. If we had different definitions for mass, length and time etc. then this constant would also be different. So could we use a 'universal set of measurements' that would eliminate the need for such constants. Downside, all future discoveries would be slightly disappointing if the scientist couldn't be able to name them after his/her self. But on the up side we wouldn't need to calculate such a constant in the first place and lazy science students with poor memory skills wouldn't need to spend so much time memorizing them. Or would changing one set of measuring units cause another set to change, meaning we will always need some universal constants somewhere? submitted by /u/Tekrith [link] [comments]

Can there exist a set of cognitive tests/tasks (computerized or not) that healthy people perform fluently but (only) 'schizophrenia' patients perform with difficulties? Posted: 21 Mar 2016 01:35 PM PDT Dear experts and friends in /r/askscience: I am both a virtually recovered possibly high-functioning 'schizophrenia' patient and a beginning learner of cognitive neuroscience also an auditor of related courses in public universities. I am now very curious about what was wrong in my brain and my mind so that I was diagnosed, and how to manage such (past) abnormalities if they emerge again. If such set of cognitive tests/tasks exist it would be possibly helpful to diagnose/define 'schizophrenia' (an umbrella term) more systematically, and it also would be possibly helpful to rehabilitate 'schizophrenia' patients. Thanks in advance for any comments or teachings you would like to reply! P.S. keywords: cognitive neuroscience, cognitive decline, cognitive training, clinical neuroscience, clinical psychology, schizophrenia... (It seems better to use 'keywords' to categorize questions on newly developing or interdisciplinary scientific studies than a few fixed flags!) submitted by /u/patient3 [link] [comments]

If the Sun is really just a ball of gas, what keeps it from dissipating? Posted: 21 Mar 2016 02:17 PM PDT submitted by /u/TCOZI [link] [comments]

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