What is the very worst case scenario in relation to the rise in water levels? Can Earth become an ocean planet?

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• What is the very worst case scenario in relation to the rise in water levels? Can Earth become an ocean planet?
• When it is crazy cold in the U.S. does that mean that the globe is likely colder overall at the moment, or is the distribution of cold and warm on the planet just distributed differently?
• How does the water supply network still remain liquid in cities even at very cold temperatures? Why don't the pipes freeze?
• [Human Body] Are 'fast twitch' muscle fibers anatomically larger in size than 'slow twitch' ones?
• Does doubling your computing power halve your processing time? Are 4 cores always 2x better than 2 cores of equal clock speed?
• Are magnetic materials stronger than they would otherwise be without their magnetic field?
• How do painkillers work?
• How dangerous is Chernobyl today?
• The angler fish attracts prey, but, does it attract predators too?
• Special Relativity Concept: n number of spaceships travel in a line, each with velocity 0.5c with respect to the one behind it. Is that possible?
• Which explanation for aerodynamic lift is correct?
• Is hearing loss like a noise gate (you can't hear quiet sounds), or is it like an overall volume reduction?
• Potentially stupid question: How do scientists calculate the length of a year?
• In Everett's multiple worlds interpretation of quantum mechanics, do the other worlds already exist prior to splitting, or do they come into existence after?
• Biologically speaking, is there any difference between a genius and a ordinary person brain's?
• MOSFET: Why do fixed oxide charges increase the flatband voltage?
• Do any animals live at the extreme poles and how do they survive?
• Does brain-training work to improve cognitive abilities, or only improve the exact tasks in the training-program?
• Do the results of the quantum eraser experiment imply that faster than light communication is possible?
• How exactly do benzodiazepines affect the brain?
• Why are heavy metals considered toxic?
• Is the sea the same “salty” in all oceans ?
• How does heat travel? Does it need something to conduct it like sound and can it travel through vacuum?

What is the very worst case scenario in relation to the rise in water levels? Can Earth become an ocean planet? Posted: 02 Jan 2018 05:05 AM PST Is it at all possible that the earth can become an ocean planet? I've seen some rather extreme maps that show only a vast ocean with only narrow strips of land of both hemispheres but most maps seem to show only losing some coastal areas like London and NYC. So, the simple question is, is there ANY scenario of the planet being taken by basically 90% ocean? Regardless of the likelihood, is there ANY scenario where humanity is forced to become a sea faring species? submitted by /u/MaimedPhoenix [link] [comments]

When it is crazy cold in the U.S. does that mean that the globe is likely colder overall at the moment, or is the distribution of cold and warm on the planet just distributed differently? Posted: 02 Jan 2018 04:25 AM PST submitted by /u/the_y_of_the_tiger [link] [comments]

How does the water supply network still remain liquid in cities even at very cold temperatures? Why don't the pipes freeze? Posted: 01 Jan 2018 08:52 PM PST submitted by /u/sexrockandroll [link] [comments]

[Human Body] Are 'fast twitch' muscle fibers anatomically larger in size than 'slow twitch' ones? Posted: 02 Jan 2018 05:02 AM PST In my limited understanding of the human skeleto-muscular system I am aware there are 2 types of muscle fibers. Fast twitch: Develop from sprint-like exercise such as running sprints, 50m swimming races, lifting heavy weights close to your maximum limit etc. Slow twice: Develop from endurance exercise such as long distance running and swimming, lifting light weights for prolonged periods/repetitions. My question is because in the gymming and weight lifting community there is a consensus that muscle growth (size) occurs when the muscles are put under duress and they fatigue. I am told that fatigue is essential in muscle growth because it generates muscular repair and rebuilds the muscle larger than before. Therefore lifting heavy weights is advocated because it puts the muscles under more fatigue and subsequently more growth. Growth of which is that of fast twitch fibers. But is there any scientific difference in the composition of fast twitch and slow twitch fibers that makes them larger? If a weight lifter were to lift only <5kg but for prolonged periods of 50-100 reps, that then fatigued the muscle, would the developing slow twitch muscle fibers be smaller than compared to fast twitch ones? If the answer is no, why do people not commonly build muscle size through slow twitch fibers? The answer may be obvious but it eludes me. Thank you. submitted by /u/anotheraccount5001 [link] [comments]

Does doubling your computing power halve your processing time? Are 4 cores always 2x better than 2 cores of equal clock speed? Posted: 02 Jan 2018 07:37 AM PST submitted by /u/TheRemedialPolymath [link] [comments]

Are magnetic materials stronger than they would otherwise be without their magnetic field? Posted: 01 Jan 2018 03:12 PM PST To clarify the title, does magnetic force within a magnetic object, like a natural magnet, contribute to its actual structural strength? Is say... a magnetized piece of iron stronger than a non-magnetized piece? Would the magnetic force within the material hold the atoms more snugly together, or am I completely off-base in my understanding of this? submitted by /u/beau101023 [link] [comments]

How do painkillers work? Posted: 01 Jan 2018 08:22 AM PST submitted by /u/mewmew2213 [link] [comments]

How dangerous is Chernobyl today? Posted: 01 Jan 2018 11:45 PM PST You can go on tours through the city? So I'm assuming short term, it's not that dangerous. Or are certain areas worse? Also, in the long term, is the risk of cancer what prevents rebuilding? submitted by /u/mac60five [link] [comments]

The angler fish attracts prey, but, does it attract predators too? Posted: 01 Jan 2018 04:47 PM PST I imagine angler fishes are easy to find in the deep ocean, and I don't think it is the biggest fish around, so, does it also attract predators?, how does it manage to attract prey more than it attracts predators? submitted by /u/Frigorifico [link] [comments]

Special Relativity Concept: n number of spaceships travel in a line, each with velocity 0.5c with respect to the one behind it. Is that possible? Posted: 01 Jan 2018 09:44 PM PST Is it possible for a spaceship to leave earth at 0.5c, then another smaller spaceship to travel ahead of the first one at 0.5c relative to the frame of the first spaceship? (And so on for any number of spaceships?). My limited knowledge of relativity tells me that you could do this any number of times, and even after many spaceships they would still only be traveling something like 0.99c due to relativistic effects.... someone correct me if I'm wrong please! submitted by /u/carnafillian113 [link] [comments]

Which explanation for aerodynamic lift is correct? Posted: 02 Jan 2018 03:04 AM PST So I'm currently studying for an aviation exam and I'm really struggling to find a good and somewhat simple explanation for aerodynamic lift. The problem is that a lot of the explanations you find in aviation books (not physics books) are incorrect or incomplete. I am really confused now so maybe you can help me out. Also, apologies for language errors, I'm still practicing my English. Here's what I figured out so far: The "longer path explanation" (air on the upper side of the airfoil travels a longer path in the same time) is incorrect. The air on top of the airfoils reaches the trailing edge long before the air beneath the airfoil. The specific shape of the airfoil/wing exerts a downward force onto the airstream above. According to Newton's third law, the surrounding air thus creates an upward force onto the wing. The air above the wing is accelerated and flows faster than the air beneath the wing. Faster flow means lower pressure (Bernoulli). Therefore, you have an area of low pressure above the wing and an area of high pressure. The resulting pressure gradient = lift. According to the Coanda Effect, the air follows the shape of the airfoil. Given that the upper half (of an asymmetric airfoil) has a somewhat circular shape, a centrifugal (centripetal) force is exerted onto the air molecules travelling along the upper half of the airfoil. The air is "stretched" and thus an area of lower pressure occurs. Lower pressure allows the air to flow faster (Bernoulli). submitted by /u/mark01254 [link] [comments]

Is hearing loss like a noise gate (you can't hear quiet sounds), or is it like an overall volume reduction? Posted: 01 Jan 2018 03:51 PM PST submitted by /u/NarawaGames [link] [comments]

Potentially stupid question: How do scientists calculate the length of a year? Posted: 01 Jan 2018 05:01 AM PST New Year's is around and it's time to write the date incorrectly for a few months. But how exactly do we know that the Earth has made its full circle around the Sun? And another question: when our modern calendar was invented, how on earth did THEY know how long a year was? Thanks for reading and have a great 2018 everyone :) submitted by /u/xXReggieXx [link] [comments]

In Everett's multiple worlds interpretation of quantum mechanics, do the other worlds already exist prior to splitting, or do they come into existence after? Posted: 02 Jan 2018 12:00 AM PST Wish I could get more information on this theory, but most of what comes up when I google it is critiques and the bio-doc with his son. submitted by /u/middleupperdog [link] [comments]

Biologically speaking, is there any difference between a genius and a ordinary person brain's? Posted: 01 Jan 2018 02:46 PM PST Sorry for any grammar error, english is not my first language. Edit1: Yes, by genius I mean IQ. submitted by /u/Marceloxdxp [link] [comments]

MOSFET: Why do fixed oxide charges increase the flatband voltage? Posted: 01 Jan 2018 03:43 PM PST As shown in the link, how do oxide charges increase the flatband voltage? https://imgur.com/a/IZtBs EDIT: Title should say MOS Capacitor EDIT2: Is it because flatband voltage is negative? submitted by /u/spacejockey8 [link] [comments]

Do any animals live at the extreme poles and how do they survive? Posted: 01 Jan 2018 05:23 PM PST I know of the animals that live near the poles such as penguins and polar bears. But this usually refers to the coastal parts of the polar surface (Coasts of Antarctica and the coast of the northern ice sheet). Do any animals live inland and actually close (say within 100 km) of the actual poles? How do they feed themselves without access to plants or sea? submitted by /u/Sectiontwo [link] [comments]

Does brain-training work to improve cognitive abilities, or only improve the exact tasks in the training-program? Posted: 01 Jan 2018 05:47 PM PST submitted by /u/X5ne [link] [comments]

Do the results of the quantum eraser experiment imply that faster than light communication is possible? Posted: 01 Jan 2018 11:59 PM PST i recently finished watching a PBS space time video on the quantum eraser experiment and it got me interested (LINK: https://www.youtube.com/watch?v=8ORLN_KwAgs). So I did a bit of research and unless I am misunderstanding the experiment, do the results not imply that causality and information can travel backwards in time? Say for example I set up an experimental apparatus where the photons which split through the prism land on a screen directly in front of me, whereas their entangled counterparts go off to a distance very far away (for example 10 light minutes away) to the quantum eraser. If I agreed prior to this experiment with an observer that is at the other end (by the quantum eraser) to either enable the quantum eraser or to disable it as a yes or no answer. Then can I not have instantaneous but binary communication? If I am understanding the experiment correctly then the entangled photons arrive at the second detector AFTER those that arrive at the first screen but still retroactively influency the photons that hit the screen first. This seems to imply that I should see either an interference pattern or a particulate-like pattern before the entangled counterpart reaches the person I am trying to communicate to in my frame of time. And theoretically that individual could communicate an outcome to me, prior to it occuring in my timeframe. Sorry if this is a jumble! Thank you! submitted by /u/Ledja [link] [comments]

How exactly do benzodiazepines affect the brain? Posted: 01 Jan 2018 05:15 PM PST I am prescribed Ativan for panic attacks. When I take 1 mg, I am calmer and my heart rate goes back to normal. However, after taking 3 mg one day, I almost immediately fell asleep (I don't remember much of anything after taking the pills) for a long period of time, and I woke up very confused. I'm wondering how exactly benzodiazepines (more specifically Ativan) are able to produce a calming effect at a lower dosage but a sedative effect at a higher one? submitted by /u/Throwaway101496 [link] [comments]

Why are heavy metals considered toxic? Posted: 01 Jan 2018 04:55 PM PST Sorry if I butchered the title. I'm asking about how heavy metals are toxic. submitted by /u/GTSPKD [link] [comments]

Is the sea the same “salty” in all oceans ? Posted: 01 Jan 2018 03:03 PM PST Is the salt concentration consistent in all oceans around the world? Or does it vary because of factors ? Of course we all know the Dead Sea is more salty, that's a given submitted by /u/FireTrickle [link] [comments]

How does heat travel? Does it need something to conduct it like sound and can it travel through vacuum? Posted: 01 Jan 2018 02:46 PM PST submitted by /u/Hussar_Regimeny [link] [comments]

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Is oxygen evenly dispersed across the planet?

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• Is oxygen evenly dispersed across the planet?
• What does mean sea level mean if you're thousands of miles from the sea?
• Can gamma rays break apart small nuclei?
• What better determines where lightning will strike: height, material, or some other factors?
• How can water go from being in a liquid state to being frozen by simply shaking it?
• If an object with a net force experiences a constant acceleration, why can’t it exceed the speed of light in a vacuum?
• What does the Maxwell term in the Ampere-Maxwell law physically represent?

Is oxygen evenly dispersed across the planet? Posted: 31 Dec 2017 02:59 PM PST Is oxygen more prominent in the rain forest more so than the desert? Is there an area with the least and most oxygen? I mean low elevations of course. submitted by /u/MAD_OR_NAW [link] [comments]

What does mean sea level mean if you're thousands of miles from the sea? Posted: 01 Jan 2018 07:59 AM PST As I understand it, Mean Sea Level is defined by taking the time-averaged effective gravitational potential of the water-air boundary averaged over the world's oceans. Since sea levels are rising globally, we choose some datum and stick to that. This seems reasonably unambiguous. If the summit of Everest is 8848m above MSL, does that mean it's 8848m directly above a point within the crust on that same equipotential, or does it mean it's on the equipotential defined by the average of all points 8848m directly above the sea? Or does it mean something else? How much difference would there be? To rephrase the question: if you hollowed out Everest and made tunnels (sealed against groundwater) connecting that cavity to the oceans, would the water find a time-averaged level 8848m directly below the summit? submitted by /u/TheBobathon [link] [comments]

Can gamma rays break apart small nuclei? Posted: 31 Dec 2017 08:36 PM PST If fully ionized (electron free) nuclei of elements like hydrogen or helium or oxygen are hit with an extremely high-energy gamma ray, what happens? Would it cause the oxygen to undergo fission? Would it even interact with the hydrogen? Assuming it does interact, what happens? submitted by /u/_AUTOMATIC_ [link] [comments]

What better determines where lightning will strike: height, material, or some other factors? Posted: 31 Dec 2017 02:06 PM PST I know that cloud-to-ground lightning generally speaking strikes from the negatively charged portion of a cloud to the positively charged portion of the ground below the storm, and that it will find the path of least resistance there, which usually means something tall. But does the material of the thing matter too? If the stepped leader is spreading out over an open field with an 80 foot metal pole vs a 100 foot wooden pole vs a 120 foot rubber pole near each other, does it just matter that it touches the rubber pole or wooden pole first, or would it still strike the metal one? (I also know that if something is really tall then it will send out an upward leader that can cause a ground-to-cloud strike, but I'm less clear about how that works) Thanks! submitted by /u/DaystarEld [link] [comments]

How can water go from being in a liquid state to being frozen by simply shaking it? Posted: 31 Dec 2017 07:23 PM PST submitted by /u/nathanvoltz [link] [comments]

If an object with a net force experiences a constant acceleration, why can’t it exceed the speed of light in a vacuum? Posted: 31 Dec 2017 01:08 PM PST submitted by /u/Not-Abe [link] [comments]

What does the Maxwell term in the Ampere-Maxwell law physically represent? Posted: 31 Dec 2017 12:45 PM PST I'm trying to understand the Ampere-Maxwell law, in the form curlB = μJ + εμ ∂E/∂t [no subscript 0s on reddit]. I get how Ampere's law works for static currents, and I can also follow the mathematical steps that are used to add the Maxwell term. (The divergence of a curl is zero, so Ampere's law always results in the rate of change of charge density being zero. Then adding an unknown vector field to the original equation and rearranging everything using Gauss's law and the equation of continuity gives the Maxwell term of εμ ∂E/∂t.) But even though I can follow the maths, I can't shake the feeling that it's like using the same information twice in one equation. The μJ term is the current density, so it represents the movement of charge. And the εμ ∂E/∂t term is the change in electric field, so it represents... also the movement of charge? I can't get my head around why the rate of change of electric field means something fundamentally different to the movement of charge, since electric field is defined by the location of charge to begin with. I've tried doing research and looking for useful analogies and explanations. But I've found a lot of things talking about the displacement current, which all seems to lead to explanations about how electric fields can polarise a medium and cause a sort of opposing field - and I can't figure a way to relate that back to the Ampere-Maxwell law itself in any useful way. Can anyone help me understand the physical meaning of the Maxwell term, and how the change of electric field means something physically different from the movement of charge? submitted by /u/jayavery [link] [comments]

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If the Niagara falls is frozen where does all the water go behind it? Does it just spill over and flood surrounding land

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• If the Niagara falls is frozen where does all the water go behind it? Does it just spill over and flood surrounding land
• Why is/was there a tendency for like minerals to collect together on earth?
• If future data from the LHC and ILC suggest that our universe is metastable, what does that mean for the future of the universe?
• When heavier elements undergo fusion do they release more energy?
• Since a particle that interacts with the Higgs Field only gets a portion of their mass from it, can there exist a particle that has mass but does not interact with the Higgs Field?
• Is their a limit to the amplitude of a light wave/ is their a limit to how intense a light source can be?
• Is there scientific backing to vibrational "healing"?
• Is there a relationship between the amount of energy an isotope emits when it decays and its half-life?
• The least-intuitive question in physics: how does gryoscopic precession work? (e.g. Helicopter Blades)
• Why is there a critical spreading rate for epidemics in random networks while the spreading rate in scale-free networks are irrelevant for epidemics?
• (Stone) statue and radiation?
• What does the G tense in the Einstein field equation stand for and why does it have two other variables assigned to it?
• How does the falcon heavy have nearly double the payload to gto than the delta 4 heavy, a rocket just as big that doesn’t have to save feud in its first stage for a return trip?
• Why is the useful life of a smoke detector only 10 years?
• How do marine mammals (especially whales) become trapped in seasonal polynyas?
• Are there any theorized particles that existed only in the electroweak epoch?
• Does thrust and acceleration affect the body (or other objects) in space?

If the Niagara falls is frozen where does all the water go behind it? Does it just spill over and flood surrounding land Posted: 31 Dec 2017 03:23 AM PST submitted by /u/Bens_Worx [link] [comments]

Why is/was there a tendency for like minerals to collect together on earth? Posted: 30 Dec 2017 08:20 AM PST It seems that the original source for minerals was random and that they should be randomly, and relatively homogeneously spread over the surface of the earth. Yet minerals like iron oxide, sodium chloride, gold, silver, (and most others it seems) have had a significant tendency to be found concentrated in various areas, making mining them and collecting them a practical endeavor. What has caused that to occur? submitted by /u/mspe1960 [link] [comments]

If future data from the LHC and ILC suggest that our universe is metastable, what does that mean for the future of the universe? Posted: 31 Dec 2017 05:01 AM PST 1) What does "metastable" mean in comparison to unstable and stable? Why is this related to the properties of the Higgs Boson and Higgs Field? 2) If it is metastable, what kind of event could cause it to suddenly want to seek a lower energy state? 3) How fast would this "new physics" bubble expand once it reached a lower stable energy level? 4) Would this be compatible with life chemistry as we know it? If the bubble hit Earth, would we just simply stop existing? Bonus Question: If the Higgs Field were to simply disappear in an area of space, would W+, W−, and Z bosons become massless and completely change the weak force? Does this have anything to do with a vacuum metastability event? submitted by /u/Stuck_In_the_Matrix [link] [comments]

When heavier elements undergo fusion do they release more energy? Posted: 31 Dec 2017 12:44 AM PST Not actually sure if heavier elements can fuse without extreme conditions, but what would happen if heavier elements instead of smaller ones like hydrogen were fused? Since our sun releases energy this way could a star of heavier elements release more energy? submitted by /u/Carconzo222 [link] [comments]

Since a particle that interacts with the Higgs Field only gets a portion of their mass from it, can there exist a particle that has mass but does not interact with the Higgs Field? Posted: 30 Dec 2017 10:29 PM PST submitted by /u/lamp4321 [link] [comments]

Is their a limit to the amplitude of a light wave/ is their a limit to how intense a light source can be? Posted: 31 Dec 2017 12:23 AM PST submitted by /u/DanielJMurillo [link] [comments]

Is there scientific backing to vibrational "healing"? Posted: 30 Dec 2017 01:10 PM PST I would love to see from a physics standpoint how vibrations/frequencies/waves from things like music or anything in general have a positive or negative effect on our bodies. I'm skeptical, but would be very interested to know if there is a connection. submitted by /u/jennyo120 [link] [comments]

Is there a relationship between the amount of energy an isotope emits when it decays and its half-life? Posted: 30 Dec 2017 05:20 PM PST I spent a while trying to figure this out, but was unable to come to any conclusion. Different isotopes release different amounts of energy when they decay, and the amount of time it takes to decay can vary significantly, but is there a good way to estimate how radioactive something is with only knowledge of the half life OR energy emitted per decay? Elements with shorter half lives are pretty much always more radioactive than their longer lived counterparts, but that's entirely because the atoms are releasing energy much more frequently, rather than releasing more energy in total. Is it possible to have an isotope with an extremely short half life that is fairly safe because its radioactive decay releases very little energy? I wasn't really sure if this is physics or chemistry, so I apologize if this was miscategorized. submitted by /u/TheDubiousSalmon [link] [comments]

The least-intuitive question in physics: how does gryoscopic precession work? (e.g. Helicopter Blades) Posted: 30 Dec 2017 11:45 PM PST This isn't a casual question for me, it's something I've tried to understand for some time now. Not sure what concept I'm missing. But the outright weirdness of how gyroscopes work still bugs me, the fact that placing a torque on a gyroscope produces a force that is 90° off-axis is freaking bizarre, and I'm not the only one that thinks so! Does anyone, anyone have a great explanation for how this concept works? Here's a video by Veritaseum if anyone wants an introduction to the problem: https://www.youtube.com/watch?v=ty9QSiVC2g0 submitted by /u/Anenome5 [link] [comments]

Why is there a critical spreading rate for epidemics in random networks while the spreading rate in scale-free networks are irrelevant for epidemics? Posted: 30 Dec 2017 12:36 PM PST Hi, Im a little bit confused after I read a paper* about the network topology and how they influence speading of diseases. My basic understanding was that there is reproduction rate (R) and the critical reproduction rate is 1. If R<1 then the disease will eventually die, but if R>1 then the disease will grow and eventually contaminate everyone in the network. Can someone explain me why the spreading rate in scale-free networks is irrelevant, but relevant in random networks? I didnt quite understand the explaination by the authors. Source: *Pastor-Satorras, Romualdo;Vespignani, Alessandro (2001): Epidemic Spreading in Scale-Free Networks, in: Physical Review Letters, 86 (14), 3200-3203 submitted by /u/Fotm_Abuser [link] [comments]

(Stone) statue and radiation? Posted: 30 Dec 2017 11:29 AM PST Recently I took a tour of the UN in New York, and they had a statue (made of stone, I presume, but I'm not sure) on display that was in Japan during the Nagasaki bombing. The back part of it had melted off due to it. The statue was fully exposed, with no glass casing or anything, so I was concerned whether it was safe to display like that since it had been exposed to so much radiation. Would something like this contain/emit a harmful amount? (pic for reference) submitted by /u/anacldgmz [link] [comments]

What does the G tense in the Einstein field equation stand for and why does it have two other variables assigned to it? Posted: 30 Dec 2017 08:52 AM PST I recently encountered the field equations of Einstein as I was inquisitive about the expansion of the universe. Unfortunately for me I dont have an in-depth of physics (yet). I am a high school student. I was able to understand most of the variable components of the formulae but I have trouble understanding the G and T tenses of the formulae. Would love to get an explanation for this. Thank you for your time. submitted by /u/the_rman [link] [comments]

How does the falcon heavy have nearly double the payload to gto than the delta 4 heavy, a rocket just as big that doesn’t have to save feud in its first stage for a return trip? Posted: 30 Dec 2017 11:35 AM PST submitted by /u/therealkimjong-un [link] [comments]

Why is the useful life of a smoke detector only 10 years? Posted: 30 Dec 2017 08:00 AM PST Given the half-life of the radioactive source is FAR greater than that, shouldn't these work for far longer (barring other causes of failure)? Or have smoke detectors been engineered to perform within specific tolerances for only 10 years (i.e. planned obsolescence)? submitted by /u/psyop63b [link] [comments]

How do marine mammals (especially whales) become trapped in seasonal polynyas? Posted: 30 Dec 2017 04:45 AM PST Having recently watched a sequence covering whales trapped in polynyas in an episode of the BBC's 2001 "Blue Planet" series entitled "Frozen Seas" I became curious to know how mammals (particularly whales) became trapped in them? Having searched online a bit I found little information about the development of this type of a situation. submitted by /u/Creativation [link] [comments]

Are there any theorized particles that existed only in the electroweak epoch? Posted: 29 Dec 2017 09:33 PM PST My current understanding is that at the beginning of the universe, at least two forces, the electromagnetic and the weak force, were under the right conditions to be considered a single force. Are there are particles, akin to what a photon is to the electromagnetic force, that exist only in a merged electroweak force? submitted by /u/Slayton101 [link] [comments]

Does thrust and acceleration affect the body (or other objects) in space? Posted: 30 Dec 2017 07:23 AM PST The question comes from a novel series I've read (the Expanse). In the series, they mention that at faster/higher thrust speeds, they have to have crash couches and drugs to handled the force of the thrust. When near a planet or star, that would make sense. But, if you're out in deep space with zero gravity, would you feel it if a ship had a sudden or constant acceleration? I would think in a zero gravity environment, you wouldn't feel the thrust. Or, you might feel an initial "bump" since the ship begins to travel before you do, but it would settle very quickly. Love the series, but that part bugs me when I read it. submitted by /u/mal_reynolds_ [link] [comments]

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Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States

Is it possible to navigate in space??

---

• Is it possible to navigate in space??
• The heisenberg uncertainty principle and quantum physics are interesting-- but how is it confirmed?
• What are real-life applications to fractional and higher-order (specifically of degree 3+) derivatives?
• How were they able to continue to operate Reactors 1-3 after the Chernobyl disaster?
• Why is the speed of light expressed as 'c'?
• If A Railgun Fired in Space, Would There Be Recoil?
• Does giving blood change your vascular system?
• How quickly does our body identify nutritious intake of substances?
• How large would an asteroid need to be to be visible by the unaided eye in the night sky and has this happened?
• Eureka moments; what are they, really?
• Is the entire atmosphere of ice and gas giants opaque?
• Other than water and salt, are there any products that we eat which have absolutely no biological origin/ingredients?
• What would happen if the ballast tanks on a ship were a vacuum?
• How does rain affect airplane drag and lift?
• How do laser pointers damage the human eye?
• Why do the pictures on thermochromic mugs fade in from bottom-to-top?
• [Biology] Among people without chronic eye conditions, how much variance is there in the highest wavelength of light they can 'see'?
• Fukushima : How does "radiation cleanup" work exactly ? What are the metrics ?

Is it possible to navigate in space?? Posted: 30 Dec 2017 03:52 AM PST Me and a mate were out on a tramp and decided to try come up for a way to navigate space. A way that could somewhat be compered to a compass of some sort, like no matter where you are in the universe it could apply. Because there's no up down left right in space. There's also no fixed object or fixed anything to my knowledge to have some sort of centre point. Is a system like this even possible or how do they do it nowadays? submitted by /u/hazza_g [link] [comments]

The heisenberg uncertainty principle and quantum physics are interesting-- but how is it confirmed? Posted: 29 Dec 2017 02:22 PM PST The way I understand one -aspect- of the heisenberg uncertainty principle is as such-- A neutron, for instance, is 'not in a single location, rather has distinct probabilities of various locations until it interacts with another object'-- I may be butchering the science, as I am but a humble student, but how can we say something like this with a rational scientific mindset? Is it not more reasonable to conclude that we simply don't -know- its' location until it's 'interacted with something? Or is there something i'm missing here? submitted by /u/AnalysisHero [link] [comments]

What are real-life applications to fractional and higher-order (specifically of degree 3+) derivatives? Posted: 29 Dec 2017 03:00 PM PST I found this intriguing because the 4th, 5th, and 6th time-derivatives of displacement are snap, crackle, and pop, respectively--those names sound like they lack practical importance (apart from the cereal joke), at least to someone inexperienced like me. submitted by /u/ThompsonChess [link] [comments]

How were they able to continue to operate Reactors 1-3 after the Chernobyl disaster? Posted: 29 Dec 2017 09:30 AM PST After the Chernobyl disaster there were still 3 reactors that were operable and remained in operation for years afterwards. I'm not familiar with nuclear power plants, but I would assume that their operations are somewhat similar to other plants like refineries and chemical plants. You have to have operators in a control room, operators making rounds in the "field," and a maintenance crew to perform routine maintenance on the equipment. So, how was the staff able to continue working at the site when the city had to be deserted due to the radiation? submitted by /u/Trbvmm [link] [comments]

Why is the speed of light expressed as 'c'? Posted: 29 Dec 2017 01:38 PM PST submitted by /u/notsowise23 [link] [comments]

If A Railgun Fired in Space, Would There Be Recoil? Posted: 29 Dec 2017 08:33 AM PST I understand that the force applied to the projectile follows the "right hand rule", and by Newton's third law I know that for every action there is an equal and opposite reaction, but does this apply to electromagnetic forces? Would a Railgun therefore require stabilizing thrusters if it was in space? (No matter how tiny the projectile, I imagine that eventually it would be off stable orbit) submitted by /u/xzieus [link] [comments]

Does giving blood change your vascular system? Posted: 29 Dec 2017 08:09 AM PST Hi, I give blood regularly and I've noticed, probably just like many others, that giving blood gets easier with time. Which made me wonder about three things: is it due to a significant change in my vascular system? does that mean if I get hurt I'll be more likely to have a haemorrhage? what could be, if any, the other changes in my body due to giving blood Thanks! submitted by /u/Vaglame [link] [comments]

How quickly does our body identify nutritious intake of substances? Posted: 29 Dec 2017 05:54 AM PST Think of when you're a bit hungry, and you eat a PB-jelly sandwich. The (slight) hunger goes away quite quickly, but I imagine the digestion process takes quite some time. What if I ate indigestible food with the same texture that my body couldn't break down? Could I fool my belly/brain? How does our body regulate hunger and how quickly and accurately can it do it actually? submitted by /u/hldshflskdhfsdlh [link] [comments]

How large would an asteroid need to be to be visible by the unaided eye in the night sky and has this happened? Posted: 29 Dec 2017 08:26 AM PST Assuming it is within 150km as it passes Earth submitted by /u/Apatharas [link] [comments]

Eureka moments; what are they, really? Posted: 29 Dec 2017 09:09 AM PST When we read or hear about the famous 'light bulb' moments in science, are these sparks of new insight from genius minds or are they the moments when thoughtful people, after lengthy study and pondering, finally understand something fundamental about a known or theorized concept? submitted by /u/abracusaurous [link] [comments]

Is the entire atmosphere of ice and gas giants opaque? Posted: 29 Dec 2017 07:06 AM PST I've read descriptions about what it would be like to fall onto Jupiter's "surface" but none of them talked about what a human would see. Since the gaseous part of the atmosphere is mostly hydrogen and helium, both colorless gasses, I imagine that once you get through the upper clouds you can start to see what you're falling into. As far as I know, there is no liquid layer even in the ice giants. It just is a gas that slowly gets more and more dense until it's "basically" a liquid and then "basically" a solid. But why would this state of matter be opaque? After a certain point falling into Jupiter, for example, couldn't you start to see light from the extremely hot core/metallic hydrogen? Or is it that like how water appears clear, but after a few miles of it no visible light gets through? submitted by /u/Sexual_Congressman [link] [comments]

Other than water and salt, are there any products that we eat which have absolutely no biological origin/ingredients? Posted: 29 Dec 2017 01:53 PM PST Water is a naturally occurring chemical, and so is salt. Neither of these products necessarily need to come from an animal or plant, or any other organism. They are not living, and do not come from anything that has lived. Are there ANY other products that we can (and normally do) eat, that are like this? submitted by /u/-popgoes [link] [comments]

What would happen if the ballast tanks on a ship were a vacuum? Posted: 29 Dec 2017 04:28 AM PST Would the ship sink, float or capsize? submitted by /u/hendo_1337 [link] [comments]

How does rain affect airplane drag and lift? Posted: 29 Dec 2017 09:18 AM PST submitted by /u/LolaAbbot [link] [comments]

How do laser pointers damage the human eye? Posted: 29 Dec 2017 05:35 AM PST submitted by /u/EpicSlothFTW [link] [comments]

Why do the pictures on thermochromic mugs fade in from bottom-to-top? Posted: 29 Dec 2017 04:26 AM PST Why do the pictures on thermochromic mugs appear from bottom to top, like in this video? I thought maybe it was because in the video it was filled but slowly. So I just tried it with my own mug and filled it up quickly to the top, and saw the same slow bottom-to-top fade. Is there some effect which causes the bottom of the mug to heat faster than the upper parts? submitted by /u/talminator101 [link] [comments]

[Biology] Among people without chronic eye conditions, how much variance is there in the highest wavelength of light they can 'see'? Posted: 29 Dec 2017 08:12 AM PST Online sources report that a typical person can see light in the wavelength range 390nm-700nm. I'm interested to know how consistent those limits are from individual to individual, among people with generally good eyesight. Just as some individuals have exceptional eyesight (as good as 20/10, 'twice' as good as 20/20), are there individuals that can perceive 740nm wavelength light, or 770nm? And are there individuals that lack the ability to perceive 660nm wavelength light? submitted by /u/sirgog [link] [comments]

Fukushima : How does "radiation cleanup" work exactly ? What are the metrics ? Posted: 29 Dec 2017 07:07 AM PST Prompted by this article edit : corrected link submitted by /u/Neker [link] [comments]

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