Is it possible to create a normal-sized ice cube of Ice VI or Ice VII in the laboratory? And will it come out of the press as an ice cube that will take awhile to melt into regular ice or water?

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• Is it possible to create a normal-sized ice cube of Ice VI or Ice VII in the laboratory? And will it come out of the press as an ice cube that will take awhile to melt into regular ice or water?
• When and what made humans realize that light speed isn't instant?
• Do Cells That Make Up The Brain Get Replaced?
• Is it possible that there is a net charge in the universe?
• Around Chernobyl its relatively safe in the open air for short periods, but very dangerous if you kick up dirt, pick vegetation, touch anything. How is this radiation stored?
• When I unplug my charger from the wall socket why does the red light stay lit for a few seconds then fades? Would the loss of power not make it instantly dim?
• In the search of exoplanets, why exactly are we searching for planets similar to earth in search for extra-terrestrial life?
• How are radioactive materials formed?
• [Physics] If 2 electrons collide, they may release a photon. Where does that energy come from?
• Why is Cherenkov radiation constant but a sonic boom is not?
• Why is our galaxy relatively flat rather than a big cloud of stuff?
• Is there a biological/observable difference in the brain of a person with a 'photographic' memory? If so, how is it different from 'normal' brains?
• Is gravity based on the size of an object? Or the mass/density of the object?
• On a phase diagram, is there vapor pressure at pressures and temperatures not on the coexistence curve?
• What happens to water when it becomes extremely compressed?
• Is crystallography a dead field?
• How do computer screens show color?
• Is molten metal still electrically conductive?
• If you shine a white light through a blue filter, does it actually change the wavelength of the color?
• [Engineering/Physics] How do thermonuclear warheads get decommissioned, without anything blowing up?
• How do fission and fusion both release energy?

Is it possible to create a normal-sized ice cube of Ice VI or Ice VII in the laboratory? And will it come out of the press as an ice cube that will take awhile to melt into regular ice or water? Posted: 06 Oct 2017 01:37 AM PDT What kind of press would you need to make an ice cube like this? The Hydraulic Press channel can't make small crystals of Ice VI with their equipment, can they? I can't find much about this since the Roman numerals throw Google off and I just get results for regular ice. submitted by /u/_Mr-Skeltal_ [link] [comments]

When and what made humans realize that light speed isn't instant? Posted: 05 Oct 2017 05:37 PM PDT submitted by /u/andreasdagen [link] [comments]

Do Cells That Make Up The Brain Get Replaced? Posted: 05 Oct 2017 07:48 AM PDT Skin cells die and get replaced with new ones continuously. Does a similar process happen for cells that make up the human brain? submitted by /u/nicebyte [link] [comments]

Is it possible that there is a net charge in the universe? Posted: 06 Oct 2017 01:50 AM PDT I was thinking that since we have more matter than anti matter, maybe there is also a possibility that there is either more positive or negative charge than the other. How easily would this be detectable? submitted by /u/empire314 [link] [comments]

Around Chernobyl its relatively safe in the open air for short periods, but very dangerous if you kick up dirt, pick vegetation, touch anything. How is this radiation stored? Posted: 05 Oct 2017 04:56 PM PDT I doubt a bunch of photons are bouncing around inside a leaf just waiting to be set free. submitted by /u/Xaphoon [link] [comments]

When I unplug my charger from the wall socket why does the red light stay lit for a few seconds then fades? Would the loss of power not make it instantly dim? Posted: 06 Oct 2017 06:54 AM PDT submitted by /u/howyabiys [link] [comments]

In the search of exoplanets, why exactly are we searching for planets similar to earth in search for extra-terrestrial life? Posted: 06 Oct 2017 06:04 AM PDT To be more specific, why is there an emphasis on searching for a earth-sized exoplanet orbiting a star with similar mass/size/thermal output(?) to our Sun? Wouldn't searching for other things that could signify the possibility of life such as water, oxygen, or carbon be more effective? Searching for something similar to earth a bajillion light years away seems an odd condition to take into account. submitted by /u/IamWongg [link] [comments]

How are radioactive materials formed? Posted: 06 Oct 2017 06:00 AM PDT Where do they come from, and what conditions need to be met? submitted by /u/MaximusElectissimus [link] [comments]

[Physics] If 2 electrons collide, they may release a photon. Where does that energy come from? Posted: 05 Oct 2017 04:00 PM PDT Full disclosure: I know nothing, Jon Snow. If this question is nonsensical or too ambiguous, please let me know. I am currently reading "Hidden in Plain Sight". In one of its chapters, the author mentions that when 2 electrons collide, there is a chance that a photon is radiated. Now, as I understand it, energy cannot be created or destroyed. Photons most certainly contain energy -- so in this case, where does the energy (expressed "in" the photon) come from? My train of thought is as follows: Did the electrons lose mass...? Did the electrons lose some "kinetic energy"? (Aren't they always moving at lightspeed though?) Did the electrons lose temperature? (Do electrons even have temperature?) What am I missing? Thanks in advance. submitted by /u/Gooseheaded [link] [comments]

Why is Cherenkov radiation constant but a sonic boom is not? Posted: 06 Oct 2017 01:31 AM PDT I read that they work the same way, but why does a sonic boom only produce one loud boom when Cherenkov radiation create a constant blue glow? Is it just because in Cherenkov radiation the 'boom' just happens over and over again? submitted by /u/obafgkmbutt [link] [comments]

Why is our galaxy relatively flat rather than a big cloud of stuff? Posted: 05 Oct 2017 02:11 PM PDT submitted by /u/vivaldibot [link] [comments]

Is there a biological/observable difference in the brain of a person with a 'photographic' memory? If so, how is it different from 'normal' brains? Posted: 05 Oct 2017 08:02 AM PDT submitted by /u/tgoodri [link] [comments]

Is gravity based on the size of an object? Or the mass/density of the object? Posted: 05 Oct 2017 07:07 PM PDT https://youtu.be/zHdJwBrT3WA?t=365 In the video above, its explained that object, when condensed (in this case, a star, example is a potato chip bag), creates a stronger gravitational pull when it is condensed. Is this true? I was always under the impression that its the size of the object that creates the gravity, not the mass/density of the object. Can someone help me understand? submitted by /u/FUCKJ0HN [link] [comments]

On a phase diagram, is there vapor pressure at pressures and temperatures not on the coexistence curve? Posted: 05 Oct 2017 06:25 PM PDT On a phase diagram, I've learned that the coexistence curve at a phase boundary is where the chemical potential of the two phases are equal. This leads to the Clausius-Clayperon equation, which can be used to estimate vapor pressure at various temperatures. But say I was on the coexistence curve between liquid and vapor, and I increased the pressure (or decreased the temperature). I should now be solidly in the liquid region of the phase diagram, where the chemical potential of the liquid phase is lowest. Does that mean liquid is the only phase present? I've been told that vapor pressure exists for any liquid under any conditions. If there is vapor pressure despite the higher pressure, then aren't the two phases coexisting? Then why is the phase boundary called the "coexistence curve"? Thanks! submitted by /u/not_zod_grodd [link] [comments]

What happens to water when it becomes extremely compressed? Posted: 05 Oct 2017 11:55 AM PDT Google was no help since I couldn't find a video on it. Im thinking of a hydraulic press pressing into a large, metal cup of water, where water can't escape from, what will happen to it? [Apologies if this is the wrong tag, I made a guess between physics and Earth sciences] submitted by /u/-Sag [link] [comments]

Is crystallography a dead field? Posted: 05 Oct 2017 11:17 AM PDT With the rise of cryo-electron microscopy, is crystallography becoming redundant as a technique? submitted by /u/junkProduct [link] [comments]

How do computer screens show color? Posted: 05 Oct 2017 06:02 PM PDT So from my understanding, computer screens actually use green, red and blue to display the color they do by activating our cones. I thought they flashed really fast so it kinda tricked our eyes. However my AP psychology teacher said it actually shows a color because of how condensed the pixels are so you can't actually see the individual colors.. So which one is actually correct? And if my teacher was correct wouldn't that mean you can't actually display a color on a single pixel? Sorry if this sounds stupid submitted by /u/jacobdu215 [link] [comments]

Is molten metal still electrically conductive? Posted: 05 Oct 2017 09:40 AM PDT Is molten metal still electrically conductive? submitted by /u/BariumSodiumNa [link] [comments]

If you shine a white light through a blue filter, does it actually change the wavelength of the color? Posted: 05 Oct 2017 11:37 AM PDT As in, could you use plain old colored plastic filters to shift the color of a white or daylight LED light to wavelengths more friendly to plant growth? submitted by /u/OtisB [link] [comments]

[Engineering/Physics] How do thermonuclear warheads get decommissioned, without anything blowing up? Posted: 05 Oct 2017 11:33 AM PDT If it were opened by cutting action, wouldn't that trigger the conventional explosives inside (and the nuclear explosion too)? submitted by /u/RatherCynical [link] [comments]

How do fission and fusion both release energy? Posted: 05 Oct 2017 09:23 AM PDT Surely they're inverse operations? One should release and one should absorb? submitted by /u/Joey936 [link] [comments]

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How exactly do DNA testing kits determine ancestry/ethnicities?

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• How exactly do DNA testing kits determine ancestry/ethnicities?
• Can you freeze gasoline and if so for how long and can it still be used once thawed?
• Will a 250 mAh power source charge a 3,000 mAh battery in 12 hours?
• Does distribution of mass influence gravity?
• Does the Higgs boson count as “matter” and does it have an antimatter counterpart?
• How do LaGrange points work in Highly Elliptical Orbits?
• Is it possible to convert heat to electricity without going through the boiling water->turbine process?
• How are some fish able to survive in the colder waters (ie the arctic) even though they are cold blooded?
• What are these deep grooves in the Eastern Pacific Ocean's floor?
• How does one country export usable electricity to another country? especially at great distances?
• How do SpaceX's 1st stage boosters not 'choke' on incoming air during re-entry burns/landings?
• Why does putting your fingers down your throat make you gag, but eating doesn't?
• Technically, do coloured solutions still have colour if no light is shone on them?
• If a giant meteor crashed into Earth and destroyed the dinosaurs, why isn't there a crater? Has it just eroded/filled in? Or is it here, just not widely known?
• Do raccoons actually wash their food? If yes, why?
• If some water droplets land on my touchscreen phone, it acts as if I touched the screen. How? Why?
• How do trams switch the rail when they run on the road?
• Could we just blow up a nuclear reactor in meltdown with a nuclear bomb ?

How exactly do DNA testing kits determine ancestry/ethnicities? Posted: 04 Oct 2017 05:18 PM PDT There are plenty of viral videos featuring people spitting into a tube and later getting their results. You can buy these types of tests at chain stores and pharmacies. These types of tests are even being advertised on TV! Wow! Would someone explain the science behind them? I want to know if these are accurate or if they're a hoax. Additionally, does the testing for these kits work the same way that other DNA testing works (like those used by detectives to identify a criminal)? submitted by /u/browniebrittle44 [link] [comments]

Can you freeze gasoline and if so for how long and can it still be used once thawed? Posted: 04 Oct 2017 08:19 PM PDT submitted by /u/silvermuffin [link] [comments]

Will a 250 mAh power source charge a 3,000 mAh battery in 12 hours? Posted: 04 Oct 2017 07:53 PM PDT This may be a stupid question, but I don't know a lot about this kind of stuff and want to learn. Let's say I have a 5 volt, 250 mAh power supply... does that mean it would take about 12 hours to charge a 3.7V, 3,000 mAh lithium-ion battery? Does voltage matter with charging speed? Or does it just have to be equal or slightly higher than the voltage of the battery being charged? I believe only current affects charging speed but if I knew for sure than well... I wouldn't be here! Thank you in advance. submitted by /u/jonnylee989 [link] [comments]

Does distribution of mass influence gravity? Posted: 05 Oct 2017 04:30 AM PDT Say, for example, Earth's polar ice caps melted and redistributed the water trapped in them across the oceans, raising the average sea level by X. Would the gravitational pull at a given elevation increase compared to what it was before? submitted by /u/macthebearded [link] [comments]

Does the Higgs boson count as “matter” and does it have an antimatter counterpart? Posted: 05 Oct 2017 03:00 AM PDT If not, how does the nature of the Higgs boson relate to the nature of matter and antimatter? submitted by /u/Timwi [link] [comments]

How do LaGrange points work in Highly Elliptical Orbits? Posted: 04 Oct 2017 12:35 PM PDT So I'm doing research on LaGrange points and most diagrams depict a planet orbiting a star in a mostly circular manner. I'm confused as to how the points would work if the orbit happens to be more elliptical, since the distance from m1 to m2 would change submitted by /u/MrBandit0 [link] [comments]

Is it possible to convert heat to electricity without going through the boiling water->turbine process? Posted: 04 Oct 2017 03:40 PM PDT Example when a nuclear reactor heats up, can that heat be converted to electricity without water->steam->Turbine? If so how does that work? submitted by /u/arvindg87 [link] [comments]

How are some fish able to survive in the colder waters (ie the arctic) even though they are cold blooded? Posted: 04 Oct 2017 03:29 PM PDT submitted by /u/blakesiev [link] [comments]

What are these deep grooves in the Eastern Pacific Ocean's floor? Posted: 04 Oct 2017 07:47 AM PDT I was browsing the NOAA Global Data Viewing tool, and selected the option to view the depth of the ocean floors. When I did, I noticed these horizontal grooves in the Eastern Pacific Ocean floor. Looking at the data, these grooves are points where the depth suddenly drops. For example, at -143.45947 Lon, 31.56494 Lat, the ocean depth is 6,127 meters. However, just a touch north, at 31.87256 Lat, the ocean depth is only 5,249 meters, around what appears to be average for the area. Is this an error in how the data is presented? Is this just physical crinkling caused by faults? If so, which ones? Why are the grooves spaced so regularly? What's going to happen to the grooves as time goes on--is anything interesting happening down there? Thank you in advance. submitted by /u/Whazzits [link] [comments]

How does one country export usable electricity to another country? especially at great distances? Posted: 04 Oct 2017 02:50 PM PDT If a country has generated electricity to excess and wants to sell it what is the scientific (or technical) method that this is accomplished? Especially over oceans, mountains across different continents? Are there any other challenges or obstacles with this task? I would appreciate any other interesting facts about global electricity or energy trade (especially having to do with renewable sources) submitted by /u/15MOG [link] [comments]

How do SpaceX's 1st stage boosters not 'choke' on incoming air during re-entry burns/landings? Posted: 04 Oct 2017 03:29 PM PDT This is a question I've had for a long time, but never really asked. From what I've heard, SpaceX boosters re-enter the atmosphere during landings and perform 'suicide burns' to be fuel efficient. But at least to me, that raises the question of how the engines are able to operate properly with all that high speed air ramming itself up into the engine nozzle. Are there any answers to this? Another related question would be how are the engines constantly able to draw fuel? With liquid fuel rockets, wouldn't accessing fuel during different stages of flight (up, 0g, down) represent a significant problem, especially as more and more fuel is spent? Thanks in advance! submitted by /u/TheAero1221 [link] [comments]

Why does putting your fingers down your throat make you gag, but eating doesn't? Posted: 04 Oct 2017 05:11 AM PDT submitted by /u/lincethan [link] [comments]

Technically, do coloured solutions still have colour if no light is shone on them? Posted: 04 Oct 2017 07:45 PM PDT From what I understand, the colour of solutions such as copper (II) sulfate comes from electrons being excited by the light energy and then returning to a more stable state, releasing that energy in the form of visible light. If there are no photons hitting a solution of said solution, technically there would be no colour, correct? EDIT: I think I get it now. thanks everyone! ! submitted by /u/Shadowciaw [link] [comments]

If a giant meteor crashed into Earth and destroyed the dinosaurs, why isn't there a crater? Has it just eroded/filled in? Or is it here, just not widely known? Posted: 04 Oct 2017 11:50 AM PDT For some reason, although I see a number indicating replies, I can't actually see anything! It just has the "whole lot of empty" message. Even notifications disappear from the Notifications List! submitted by /u/Sweet_Taurus0728 [link] [comments]

Do raccoons actually wash their food? If yes, why? Posted: 04 Oct 2017 08:44 AM PDT submitted by /u/GamerOfLegends3008 [link] [comments]

If some water droplets land on my touchscreen phone, it acts as if I touched the screen. How? Why? Posted: 04 Oct 2017 08:31 AM PDT submitted by /u/Whaty0urname [link] [comments]

How do trams switch the rail when they run on the road? Posted: 04 Oct 2017 07:22 AM PDT For trains, or when they run on dedicated tracks, it's really easy, but how do they switch the track when they run on the road? submitted by /u/Thammarith [link] [comments]

Could we just blow up a nuclear reactor in meltdown with a nuclear bomb ? Posted: 04 Oct 2017 02:39 PM PDT As I was reading another Askscience comment about meltdown in fission reactors, I just thought as a joke: "why not just nuke it and be done with it". But then I thought, outside of the craziness and unpredictability of it : If you were to detonate a nuclear bomb next to a reactor which is undergoing a meltdown, would you just spread the uranium of the reactor around (as uranium and other isotopes), or would the influx of neutron from the bomb activate the uranium and contribute to the runaway fission and "burn up" releasing more energy in the bomb reaction ? I'm sure if it was simple it would have been tried already with Fukushima or Tchernobyl, but I would like to understand what would happen exactly. EDIT: The "idea" would be to burn the nuclear fuel from the powerplant. You can live in Hiroshima because most of the fuel is spent in the nuclear explosion and the area was safe-ish relatively fast, while you can't live in Fukushima / Tchernobyl because the fuel degrades in many isotopes and spreads everywhere. submitted by /u/the_geth [link] [comments]

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What are the main complications stopping us from using nuclear fusion?

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• What are the main complications stopping us from using nuclear fusion?
• Why doesn't the glass inside optic fibers break?
• Why doesn't electromagnetism violate parity conservation?
• Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology
• How does star size affect planetary characteristics?
• How do we know how much % of its fuel the sun has burned through?
• How come protons in a nucleus don't instantly "push" each other away but rather the nucleus decays over a long time?
• Today I saw the equation "PV=nRT". Why do the variables all match exactly? Why don't we have to multiply R by 1.25? Or P by 0.5?
• Is it possible to change the shape of a single molecule (stretching, compressing, flexing, etc.) without breaking the atomic bonds?
• How did China utilize quantum entanglement to transfer data?
• Why do energy levels converge at higher energies?
• Why can't we capture carbon with trees or technology?
• Does a Bragg curve apply to beta particles too?
• Have we figured out why electricity and magnetism so closely related?
• How efficient is a star's conversion of matter into energy?

What are the main complications stopping us from using nuclear fusion? Posted: 03 Oct 2017 06:14 PM PDT submitted by /u/Noveross [link] [comments]

Why doesn't the glass inside optic fibers break? Posted: 04 Oct 2017 06:47 AM PDT submitted by /u/meshal-alnashri [link] [comments]

Why doesn't electromagnetism violate parity conservation? Posted: 03 Oct 2017 03:58 PM PDT The Wu experiment demonstrated that the weak force violated parity conservation because the direction of emission of electrons from cobalt atoms changed when an electrical coil around them was mirrored. But doesn't the same effect happen when you remove the cobalt and just look at the magnetic field produced by the coils? The magnetic field changes from pointing up to pointing down (or vice versa) when the coil's direction is changed, so the mirror image changes more than just the reflected coordinate. submitted by /u/Skylord_a52 [link] [comments]

Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology Posted: 04 Oct 2017 08:10 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]

How does star size affect planetary characteristics? Posted: 03 Oct 2017 03:09 PM PDT I'm most interested whether the current model(s) of star/planet formation show any trends between star size and the characteristics of planets in orbit. For example, are larger stars expected to have more or fewer planets? Is there a negative or positive correlation between star and planet size? Are "Hot Jupiters" more or less likely with giant or dwarf stars? Answers to any and all of these questions would be very helpful since I've had a devil of a time looking them up. submitted by /u/aeyamar [link] [comments]

How do we know how much % of its fuel the sun has burned through? Posted: 04 Oct 2017 04:12 AM PDT I understand that we can look at the sun and, through various methods (e.g. spectroscopy) determine its mass and composition. But how do we know that the sun has burned through (about) half of its fuel? Phrased another way: how do we know how much fuel it started with? submitted by /u/drafterman [link] [comments]

How come protons in a nucleus don't instantly "push" each other away but rather the nucleus decays over a long time? Posted: 04 Oct 2017 01:38 AM PDT submitted by /u/RestInBeatz [link] [comments]

Today I saw the equation "PV=nRT". Why do the variables all match exactly? Why don't we have to multiply R by 1.25? Or P by 0.5? Posted: 03 Oct 2017 07:39 PM PDT It boggles my mind that everything is so.... perfect. Did n and R only come about because of this equation, and so were given arbitrary values that caught on? submitted by /u/soupmeister [link] [comments]

Is it possible to change the shape of a single molecule (stretching, compressing, flexing, etc.) without breaking the atomic bonds? Posted: 03 Oct 2017 09:30 AM PDT submitted by /u/pope4president [link] [comments]

How did China utilize quantum entanglement to transfer data? Posted: 04 Oct 2017 05:41 AM PDT submitted by /u/speech_freedom [link] [comments]

Why do energy levels converge at higher energies? Posted: 04 Oct 2017 05:26 AM PDT For example, in the emission line spectrum of hydrogen the lines of the different series converge because energy levels converge at higher energies. submitted by /u/lolodoggo [link] [comments]

Why can't we capture carbon with trees or technology? Posted: 03 Oct 2017 06:49 PM PDT just wondering submitted by /u/Rrrdude [link] [comments]

Does a Bragg curve apply to beta particles too? Posted: 03 Oct 2017 10:46 AM PDT I am currently working on my High School thesis about ionising radiation and while working on the penetration ability of the different types of radiation, I wondered: Does a Bragg curve apply to beta particles too? Or more specific: Is the relation between the stopping power and distance traveled of beta particles the same as alpha particles? Thanks in regard! (Apologies for any mistakes in term of grammar or vocabulary, english is not my native language) submitted by /u/Dr_Oetlul [link] [comments]

Have we figured out why electricity and magnetism so closely related? Posted: 03 Oct 2017 08:30 PM PDT We know moving charges produce magnetic field and magnetic fields create emf. But have we figured out what causes this and why does it happen? submitted by /u/cranky-alpha [link] [comments]

How efficient is a star's conversion of matter into energy? Posted: 03 Oct 2017 10:33 AM PDT What percentage of each hydrogen atom is actually converted to energy while undergoing fusion? submitted by /u/myliit [link] [comments]

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