When dolphins open their eyes above water, are things blurry like when humans open their eyes below water?

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• When dolphins open their eyes above water, are things blurry like when humans open their eyes below water?
• Does a simple fire emit ultraviolet light? lf no, then how does our sun do so? Ks it a matter of thermonuclear fusion, or something else?
• Is the volcanic and geological activity of the past few years unusual?
• How did Ice Ages and extremely hot periods end in history?
• Since the ocean is so vast and fish are pretty mobile, how do we determine where a certain kind of fish is "from". Do they have multiple geographic homes?
• How many calories do insects usually consume in a day?
• How does the stomach let through food and water, but not the acid?
• Why are there a lot more right-handed people than left-handed people?
• Why must two quantum mechanical observables have their commutator equal zero if they are to be simultaneously observable?
• Why is MCT (Medium Chain Triglyceride) great for health but Triglycerides are bad?
• What negative effects (if any) are we causing by increasingly introducing antibacterial products to our water waste?
• Why does the sky usually look green during a lightning and thunderstorm?
• Why are bruised spots on fruit sweeter than the rest of it?
• What is a Quantum Mechanical understanding of absolute zero?
• The victims of the Mt. St. Helens volcanic explosions: what happened to the bodies that were never found?
• What precautions will be taken by the Mauna Kea Observatories in the event of a volcanic eruption?
• Is it possible to gain control over the muscles in the iris?
• Do mosquitoes do anything for the ecosystem?
• What casuses air to diverge jn the upper troposphere to cause low pressure?
• If plants ‘Breathe in’ CO2 for photosynthesis then use it in respiration for energy, how do they get rid of the CO2 that they gained from the air?
• Do all neutron stars have strong magnetic fields?

When dolphins open their eyes above water, are things blurry like when humans open their eyes below water? Posted: 05 May 2018 01:32 PM PDT What adaptations do dolphins and other marine mammals have to see clearly under water and how does that affect their vision above water? submitted by /u/laughs_at_things_ [link] [comments]

Does a simple fire emit ultraviolet light? lf no, then how does our sun do so? Ks it a matter of thermonuclear fusion, or something else? Posted: 06 May 2018 04:41 AM PDT submitted by /u/Gadongbadabong [link] [comments]

Is the volcanic and geological activity of the past few years unusual? Posted: 05 May 2018 05:42 PM PDT Activity in Yellowstone, Greenland, and in multiple places around the world. Hawaii now has a new volcanic formation with recent activity... It feels abnormal. How much of this feeling is based on science, and how much is media hysteria? Also, what is possibly causing this (percieved) increase in activity? submitted by /u/rhboomer [link] [comments]

How did Ice Ages and extremely hot periods end in history? Posted: 06 May 2018 05:32 AM PDT So I hear a lot about positive feedback loops: ice disappears, less heat is reflected back into space, more CO2, more heat is trapped, ice melts, etc. And the other way around: earth gets colder, ice forms, more heat is reflected, more co2 trapped in ice, less heat is trapped, ice forms etc. So how did these loops break in earths history? submitted by /u/robj185 [link] [comments]

Since the ocean is so vast and fish are pretty mobile, how do we determine where a certain kind of fish is "from". Do they have multiple geographic homes? Posted: 05 May 2018 08:55 AM PDT I am sure temperature, latitude, and depth are some of the pieces of relevant info, but can we really say where a fish's "home" is? submitted by /u/pileofcats [link] [comments]

How many calories do insects usually consume in a day? Posted: 05 May 2018 06:20 PM PDT It has to be such a small amount but I'd imagine it's very easy to overeat if everything around you is massive right? submitted by /u/StrategyHog [link] [comments]

How does the stomach let through food and water, but not the acid? Posted: 05 May 2018 02:43 PM PDT submitted by /u/PuurderGoud [link] [comments]

Why are there a lot more right-handed people than left-handed people? Posted: 05 May 2018 06:30 PM PDT About an 80/20 split between right and left? submitted by /u/Zeranvor [link] [comments]

Why must two quantum mechanical observables have their commutator equal zero if they are to be simultaneously observable? Posted: 05 May 2018 08:32 AM PDT submitted by /u/ChemAnon2018 [link] [comments]

Why is MCT (Medium Chain Triglyceride) great for health but Triglycerides are bad? Posted: 06 May 2018 06:00 AM PDT I've been researching Ketogenic Diet & Intermittent Fasting. If that gives any context as to which mindset the speakers were coming from submitted by /u/dafckingman [link] [comments]

What negative effects (if any) are we causing by increasingly introducing antibacterial products to our water waste? Posted: 05 May 2018 11:25 PM PDT I understand our water waste leads to sewage treatment plants before being re-released into the environment, but does this process insured that these products never enter the environment? submitted by /u/iduro [link] [comments]

Why does the sky usually look green during a lightning and thunderstorm? Posted: 05 May 2018 04:38 PM PDT submitted by /u/ByOdensBear [link] [comments]

Why are bruised spots on fruit sweeter than the rest of it? Posted: 05 May 2018 09:29 AM PDT submitted by /u/pandapoops2 [link] [comments]

What is a Quantum Mechanical understanding of absolute zero? Posted: 06 May 2018 04:24 AM PDT Classically, the temperature, of some peice of matter, is the average kinetic energy of all the particles that make it up. So absolute zero is just when the every particle has zero kinetic energy. But from Heisenbergs uncertainty principal we know that uncertainty in momentum cannot be zero, thus restricring momentum of a particle to some finite value, thus restricring kinetic energy to some finite value... and you can see where I'm going. submitted by /u/Tom_ginsberg [link] [comments]

The victims of the Mt. St. Helens volcanic explosions: what happened to the bodies that were never found? Posted: 05 May 2018 04:16 PM PDT I understand many of the victims were exposed to high wind, high heat, and flying debris; any of which could have been fatal. Volcanologist David Johnston was quite a ways from the volcano, but was never found. Harry R. Truman lived near Spirit Lake and was covered in something like 150 feet of mud. Is it possible that many of the victims became fossilized? Has there been any attempts to uncover victims or structures? submitted by /u/iguanarchist [link] [comments]

What precautions will be taken by the Mauna Kea Observatories in the event of a volcanic eruption? Posted: 05 May 2018 02:31 PM PDT A nearby volcano, Kīlauea, is starting to show activity, will that cause problems with ash, dust, earthquakes, etc at the Mauna Kea Observatories? submitted by /u/sexrockandroll [link] [comments]

Is it possible to gain control over the muscles in the iris? Posted: 05 May 2018 04:49 PM PDT submitted by /u/DerDade [link] [comments]

Do mosquitoes do anything for the ecosystem? Posted: 05 May 2018 09:17 PM PDT submitted by /u/etherealrock [link] [comments]

What casuses air to diverge jn the upper troposphere to cause low pressure? Posted: 05 May 2018 11:19 PM PDT Can't find any useful info on this so far. I just want to know the scientific reason behind diverging air high up which creates lower pressure near the surfice as warm air rises to replace the air leaving the column submitted by /u/getsomebrodie [link] [comments]

If plants ‘Breathe in’ CO2 for photosynthesis then use it in respiration for energy, how do they get rid of the CO2 that they gained from the air? Posted: 05 May 2018 06:20 PM PDT Photosynthesis is endothermic 6(CO2)+6(H20) => C6H12O6 + 6(O2) Respiration is exothermic C6H12O6 + 6(O2) => 6(CO2)+6(H20) I would guess the extra carbon is used to build cells as wood is combustible hence has carbon in it, but I'm not sure. submitted by /u/IOW_Lag [link] [comments]

Do all neutron stars have strong magnetic fields? Posted: 05 May 2018 08:42 PM PDT submitted by /u/CallMeDoc24 [link] [comments]

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How did flowers and plants reproduce before there existed bees?

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• How did flowers and plants reproduce before there existed bees?
• I get that bees are essential to an ecosystem, but do wasps/hornets do literally anything useful in that sense?
• Has any non-human species succeeded in domesticating another species? Not mutualism, but actual domestication?
• What's the difference between the piezoelectric effect vs what we know about time crystals?
• Instead of waiting for an eruption of a vulcano, why not drill a hole in it to release the pressure?
• Why is it recommended to completely finish an oral antibiotic prescription, while topical antibiotics (ex. polysporin and other antibiotic creams) can be applied as needed?
• Does salting fields even do anything?
• Do astronauts turn in their sleep?
• Why there are food-grade silicone, if pure silicone is inherently non-toxic?
• What makes cocaine cardiotoxic? How does it damage the heart?
• How do graphing calculators (like Desmos or GeoGebra) work?
• What is charge-shift bonding?
• Is it possible to 'repair' an artificially degraded attention span?
• does the amount of tension a wire is under affect its ability to conduct electricity?
• Is Cancer getting more common among people or is it because we are able to diagnose it more properly?
• Can your genes change throughout the course of your life?
• How do palaeontologists and/or archaeologists know where to dig as opposed to poking holes in the ground randomly in a hail Mary attempt to discover new things?
• Why do some flowers open up in the day and fold up at night, instead of just remaining open all the time?
• What does Neglis mean?
• Do smaller processor manufacturing processes (7nm lithography for example) wear out faster?
• Do all tsunamis travel at around the same speed? If not, what dictates how quickly they move (other than water depth)?
• If two cranes/hoists have the same capacity, are they able to lift double the weight when combined?

How did flowers and plants reproduce before there existed bees? Posted: 04 May 2018 02:54 PM PDT Wow! I didn't expect this to blow up but thank you for all the answers! Also, I was watching the bee movie when this question popped into my head;) submitted by /u/LeanderD [link] [comments]

I get that bees are essential to an ecosystem, but do wasps/hornets do literally anything useful in that sense? Posted: 05 May 2018 04:51 AM PDT submitted by /u/JayMantis [link] [comments]

Has any non-human species succeeded in domesticating another species? Not mutualism, but actual domestication? Posted: 05 May 2018 05:32 AM PDT The domesticated species cannot survive or tends to die off without the other? I believe there is a pairing of ants/aphids that is close. Not looking for cleaner fish or mutually beneficial relationships, but a distinctly one-sided relationship. One species is controlling and manipulating the other species' population and behavior. submitted by /u/Dragonqueencr [link] [comments]

What's the difference between the piezoelectric effect vs what we know about time crystals? Posted: 04 May 2018 11:03 AM PDT I just read this article about Yale university discovering a new time crystal in a children's crystal growing kit. As described in the article, time crystals change their state when "exposed to an electromagnetic pulse". Since minerals like Quartz also change state when exposed to a electromagnetic pulse, how are they different? Is it just the arrangement of the molecules in the crystal that are different? or is it purely the result of the state change that is different? Does anyone know if the two are linked in some way(the piezo and time crystal effect)? submitted by /u/monostereo [link] [comments]

Instead of waiting for an eruption of a vulcano, why not drill a hole in it to release the pressure? Posted: 05 May 2018 03:39 AM PDT submitted by /u/Twiebie- [link] [comments]

Why is it recommended to completely finish an oral antibiotic prescription, while topical antibiotics (ex. polysporin and other antibiotic creams) can be applied as needed? Posted: 05 May 2018 07:03 AM PDT Hello! I understand that when taking oral antibiotics, you're strongly recommended to finish the entire prescription, since finishing early could allow resistant survivors to reproduce and cause an antibiotic-resistant infection. However, with topical antibiotics like creams and ointments, it's recommended to apply liberally as needed either with or without a bandage. Is there a reason that topical antibiotics can be used only as needed? Wouldn't using them in this way enable antibiotic resistance? Thank you so much for your help! submitted by /u/TwentyfootAngels [link] [comments]

Does salting fields even do anything? Posted: 05 May 2018 08:05 AM PDT It has been a military tactic for millennia, but does it have any effect? submitted by /u/TomHicks [link] [comments]

Do astronauts turn in their sleep? Posted: 05 May 2018 03:01 AM PDT People who are unconcious have to be turned or they get bed sores. Healthy people while sleeping turn them selves without waking. Does that instinct/behaviour persist when there's no gravity? submitted by /u/Scourge31 [link] [comments]

Why there are food-grade silicone, if pure silicone is inherently non-toxic? Posted: 05 May 2018 06:21 AM PDT submitted by /u/Tonycom [link] [comments]

What makes cocaine cardiotoxic? How does it damage the heart? Posted: 04 May 2018 11:42 PM PDT submitted by /u/oxct_ [link] [comments]

How do graphing calculators (like Desmos or GeoGebra) work? Posted: 05 May 2018 07:43 AM PDT What method/algorithm is used to solve complex transcendental equations? What exactly goes on inside the ALU when an equation is being plotted? submitted by /u/Normal_Human-Being [link] [comments]

What is charge-shift bonding? Posted: 05 May 2018 06:28 AM PDT I read through some papers but still do not understand it. Does it means that molecules with significant charge-shift bonding exists primarily in a resonance structure? Also, how far is this theory accepted in the scientific community? Why isn't this being taught in the curriculum? submitted by /u/pointamelnia [link] [comments]

Is it possible to 'repair' an artificially degraded attention span? Posted: 04 May 2018 12:56 PM PDT ADHD specialised psychiatrist Edward Hallowell, amongst many other observers, suggests chronic multi-taskers or media/internet consumers often have reduced attention spans or ability to focus. Anecdotally, this has been the case for me also. I was an avid reader as a child and could consume books start to finish in a sitting, but as an adult I often struggle to read a single page or article without my mind constantly wandering to irrelevant tangents, despite conscious attempts to focus. It is debilitating to me as a student with copious amounts of reading to do and I find myself curious: Is it possible to reverse the perceived effects of mass media consumption on attention-span? submitted by /u/Limerick_Goblin [link] [comments]

does the amount of tension a wire is under affect its ability to conduct electricity? Posted: 05 May 2018 05:14 AM PDT If so is it only to a minute extent? submitted by /u/timrs [link] [comments]

Is Cancer getting more common among people or is it because we are able to diagnose it more properly? Posted: 04 May 2018 08:56 PM PDT These days I'm seing a lot of news about about healthy people getting cancer. It feels like all the polution and the talk of phone signals' radiation may have a role in making it more common. I am not sure that it is statistically true though. I wanna ask the research community is cancer really becoming more common? submitted by /u/Phenkoaway [link] [comments]

Can your genes change throughout the course of your life? Posted: 04 May 2018 05:33 PM PDT I know that certain factors such as radiation can change your genetic makeup, but does your DNA change on its own or it is the same throughout life? submitted by /u/SilverCloud73 [link] [comments]

How do palaeontologists and/or archaeologists know where to dig as opposed to poking holes in the ground randomly in a hail Mary attempt to discover new things? Posted: 04 May 2018 01:10 PM PDT Specially paleoguys that find fossils out in the desert. submitted by /u/_Cannib4l_ [link] [comments]

Why do some flowers open up in the day and fold up at night, instead of just remaining open all the time? Posted: 04 May 2018 10:22 AM PDT submitted by /u/nomnommish [link] [comments]

What does Neglis mean? Posted: 05 May 2018 12:53 AM PDT My girlfriend is reading a book where a character has "Neglis". Google tells me this is aplastic anaemia but I have never heard it be called Neglis before, so I assume this is an American term. What I cannot find is why it is called so. Is it eponymous or what? submitted by /u/HideYourloveaway [link] [comments]

Do smaller processor manufacturing processes (7nm lithography for example) wear out faster? Posted: 04 May 2018 01:14 PM PDT I have no idea of materials and how they are used (except silicon wafers), especially their endurance over-time. And it kind of got me thinking if less material is used for the transistors making up the processor, wont it sort of have less resistance to everything happening to it? submitted by /u/Chromiczlul [link] [comments]

Do all tsunamis travel at around the same speed? If not, what dictates how quickly they move (other than water depth)? Posted: 04 May 2018 01:13 PM PDT Hey! First time posting here. Just have a few questions about tsunamis that I've always had but just now getting around to asking: Do all tsunamis travel at around the same speed? If not, what dictates how quickly they move (other than water depth)? Also would like to know how waves differ based on their origin (like impact, landslide, earthquake (and any others I don't know about)). Was recently thinking about Kilauea (because eruption) and wanted to know more about a flank collapse (I think that's what you call it). I know there's evidence on Lanai of a HUGE wave. Like 1,500 feet I think. And there was that landslide in Lituya Bay. But how far/quickly do waves like that travel in the open ocean? Sorry that this is so scattered. I LOVE this kinda stuff but don't know much about physics or math. Thanks! submitted by /u/RIPTiangong-1 [link] [comments]

If two cranes/hoists have the same capacity, are they able to lift double the weight when combined? Posted: 04 May 2018 12:11 PM PDT Example: If there are two 2-ton cranes attached to a single object, is their combined lifting capacity 4 tons? submitted by /u/corkyr [link] [comments]

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

When the mars rover went to mars were they able to remove all bacteria and small life from it? If not could any of the bacteria be able to live in the harsh conditions of mars? And how do they obtain soil samples looking for bacteria if it could possibly be from the rover itself?

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• When the mars rover went to mars were they able to remove all bacteria and small life from it? If not could any of the bacteria be able to live in the harsh conditions of mars? And how do they obtain soil samples looking for bacteria if it could possibly be from the rover itself?
• What determines fat content in lab grown meat?
• Why Doesn't FM Radio Work At High Latitudes?
• How did we "prove" either twin, cousin, or sexy primes are infinite without knowing precisely which one?
• Why did Physicist back then reasoned that "...atoms should give off a rainbow of colors as they do so."?
• Is there some force that counters a particle that approaches light speed?
• Can you tell which star is further away in the iconic Star Wars scene?
• Can radiation move you in space?
• How do we differentiate between memories of real life and realistic dreams?
• If π is defined as the ratio of a circle's circumference to its diameter, do aliens who live in a curved spacetime region have another value for π?
• What's the difference between fermented and rotted foods? And how can you know when fermented food is unsafe to eat?
• During the formation of mountain ranges, what determines what their shape will be?
• Why does the "third sound" occur in helium only?
• Why is there no technetium on earth?
• Have all of the natural isotopes in the universe been found?
• Why do some materials feel colder at the same ambient temperature?
• Is all Quark-Gluon plasma the same?
• How do we know radioactive decay based absolute dating is accurate, i.e. that the rate of radioactive decay does not change?
• Beyond obvious generalities like sea level rise, what exactly are some specific projected trends for climate change in various parts of the world? What should we expect every decade up to 2100 based on what we know?
• Do lightning rods and Faraday cages operate using the same principle?
• How Does Gravity Affect Single Particles?
• How good are we at transporting electricity ?

When the mars rover went to mars were they able to remove all bacteria and small life from it? If not could any of the bacteria be able to live in the harsh conditions of mars? And how do they obtain soil samples looking for bacteria if it could possibly be from the rover itself? Posted: 03 May 2018 07:48 PM PDT submitted by /u/cxcookie117 [link] [comments]

What determines fat content in lab grown meat? Posted: 04 May 2018 07:38 AM PDT Say for example, beef is grown in vitro. Will you be able to get a steak of varying fat content (different degrees of marbling?) Will the fat content be similar to that of a new born cow? Will it be all protein? How do scientist control this, if at all? submitted by /u/PinkSquirt [link] [comments]

Why Doesn't FM Radio Work At High Latitudes? Posted: 04 May 2018 02:08 AM PDT At latitudes north of 60°, frequency modulated radio is unreliable. FM signals become undecipherable at distances as low as 5km. Meanwhile an amplitude modulated radio signal of the same power level propagates beautifully. Why does this happen? submitted by /u/Elodrian [link] [comments]

How did we "prove" either twin, cousin, or sexy primes are infinite without knowing precisely which one? Posted: 04 May 2018 06:46 AM PDT I saw Terence Tao say that if we combine the formulas used to determine the number of confirmed twin, cousin, and sexy primes, the result suggests an infinite number, implying that at least one of the prime types is infinite. Can anyone elaborate/explain/point me to some material on this? Fascinating stuff. submitted by /u/Melquiedes [link] [comments]

Why did Physicist back then reasoned that "...atoms should give off a rainbow of colors as they do so."? Posted: 04 May 2018 12:43 AM PDT I was just reading this thing about the "History of Atoms" One of the things they mentioned was that when they were trying to argue Rutherford's model, one of their reasoning was: "But there appeared something terribly wrong with Rutherford's model of the atom. The theory of electricity and magnetism predicted that opposite charges attract each other and the electrons should gradually lose energy and spiral inward. Moreover, physicists reasoned that the atoms should give off a rainbow of colors as they do so. But no experiment could verify this rainbow." https://www.nobeliefs.com/atom.htm submitted by /u/bruhbrahbruhh [link] [comments]

Is there some force that counters a particle that approaches light speed? Posted: 04 May 2018 03:05 AM PDT This may be ignorant but, if you apply a constant electromagnetic force on an electron in, say, the LHC, what keeps the electron's speed from increasing to infinity? Does a force start countering the electron? submitted by /u/cheese_n_potato [link] [comments]

Can you tell which star is further away in the iconic Star Wars scene? Posted: 04 May 2018 07:35 AM PDT Tatooine Twin Suns I was asked recently if I could tell which star was further away in this scene. I did not know if it was possible to answer that based on the picture alone. We can see one is more red than the other one. Does redshift/blueshift come into effect here? Or is the color more to do with the atmosphere? Can that play a significant role is judging an objects distance? submitted by /u/bananabalm [link] [comments]

Can radiation move you in space? Posted: 04 May 2018 06:54 AM PDT Say there's an object floating completely still in space. Is it possible for EM radiation to directly move or rotate this object? In other words, can the photons transfer their momentum to the object and make it move or rotate? Would it make a difference if the radiation was emitted by the object vs it being expose to radiation? And what about radiation from the decay of an isotope, like alpha particles? Since those are essentially nuclei, would they be more likely to move or rotate an object? submitted by /u/SweatEagle [link] [comments]

How do we differentiate between memories of real life and realistic dreams? Posted: 03 May 2018 04:25 PM PDT Most dreams are pretty far fetched, but sometimes they are very realistic in the setting and plot etc. So throughout our lives, how are humans able to differentiate between what happened in a dream and what happened in real life? submitted by /u/indescisive-bish [link] [comments]

If π is defined as the ratio of a circle's circumference to its diameter, do aliens who live in a curved spacetime region have another value for π? Posted: 03 May 2018 12:30 PM PDT I know it is actually defined in Euclidean space but is there any reason why aliens in curved spacetime region would prefer that definition over their own space with it's own metric? It also plays an important role in many fields of mathematics other than geometry (for example Fourier transformation), so how can aliens advance in mathematics if they have their own interpretation of π? submitted by /u/ucusansinekler [link] [comments]

What's the difference between fermented and rotted foods? And how can you know when fermented food is unsafe to eat? Posted: 03 May 2018 11:26 AM PDT submitted by /u/viramp [link] [comments]

During the formation of mountain ranges, what determines what their shape will be? Posted: 03 May 2018 02:44 PM PDT When a mountain is formed from platonic activity, will that process create a predictable shape for the mountain? What during that process determines the mountain's size, whether its peak is flatter or sharper, how steep its slopes are, etc.? And furthermore, are most of the deformations on mountains caused by erosion, or are there inherit deformations when a mountain is "born"? submitted by /u/Baron_Sigma [link] [comments]

Why does the "third sound" occur in helium only? Posted: 03 May 2018 08:27 PM PDT I've been digging through Randall Munroe's What If blog, and came across this mention of the "third sound". Wikipedia appears to call it "second sound," and only mentions it occurring in forms of Helium. Why is that? Is this still chemistry, even? Why doesn't liquid H behave similarly, or liquid N? submitted by /u/rogert2 [link] [comments]

Why is there no technetium on earth? Posted: 03 May 2018 03:27 PM PDT If elements lower than uranium can occur naturally why does technetium have to be made in a lab? Why wasn't it made with all of the other elements? submitted by /u/Parnellium [link] [comments]

Have all of the natural isotopes in the universe been found? Posted: 03 May 2018 03:31 PM PDT I see this all the time for elements but not for isotopes specifically. Also. Can we create isotopes in a similar manner as we created the unstable elements by shooting them with alpha particles? submitted by /u/novalavaly [link] [comments]

Why do some materials feel colder at the same ambient temperature? Posted: 04 May 2018 01:13 AM PDT Metal for example submitted by /u/sorrydaveicantdothat [link] [comments]

Is all Quark-Gluon plasma the same? Posted: 03 May 2018 01:11 PM PDT So, I believe (but I may be wrong) that shortly after the big bang, there was the quark epoch, during which protons, neutrons, etc. couldn't form from the soup of quarks and gluons in the universe. Quark-Gluon plasma can be formed from regular matter under (really) extreme heat and pressure, but once it forms, what happens next? If you formed it from hydrogen or helium, would it look the same as if you'd formed it from iron or uranium? After the quark epoch, we eventually got hydrogen. Would Quark-Gluon plasma always turn into hydrogen after it cooled/expanded no matter where it came from? submitted by /u/nikstick22 [link] [comments]

How do we know radioactive decay based absolute dating is accurate, i.e. that the rate of radioactive decay does not change? Posted: 03 May 2018 01:39 PM PDT I've long wondered how we know radioactive decay occurs at a constant rate. Despite humans only measuring radioactive decay for roughly a century, all scientists seem entirely confident in the absolute dating values this results in, spanning back billions of years. I expect that this relies on quantum mechanics and some physical constant(s), but I'm unclear on what they may be. I've asked researchers in quantum physics, but failed to get an answer. Is a constant rate of radioactive decay merely an assumption, or is there hard science behind it? Presuming there's some physical constant this relies on, how can we know it doesn't change? submitted by /u/Chard121 [link] [comments]

Beyond obvious generalities like sea level rise, what exactly are some specific projected trends for climate change in various parts of the world? What should we expect every decade up to 2100 based on what we know? Posted: 03 May 2018 03:00 PM PDT submitted by /u/CaesarSultanShah [link] [comments]

Do lightning rods and Faraday cages operate using the same principle? Posted: 03 May 2018 06:40 PM PDT Basically what the title says. I may have a simplified understanding of how both function, but I'm just wondering if a Faraday cage is functional due to the same principle/effect/law/etc. as a lightning rod. It seems somewhat similar to a radio antenna, as well, so if you could answer that too, it would be appreciated. submitted by /u/crocoduck117 [link] [comments]

How Does Gravity Affect Single Particles? Posted: 04 May 2018 12:11 AM PDT Does a single particle (like a hydrogen atom) in a vacuum fall like a macroscopic object in a relatively weak gravitational field (like the Earth's)? Or maybe does its position expectation value change like -(1/2)gt2 ? ELIundergrad if possible, and thanks! submitted by /u/ryrinder [link] [comments]

How good are we at transporting electricity ? Posted: 04 May 2018 12:07 AM PDT How is is done ? Is it expensive, how high is the power loss ? Can we expect significant improvements in the near future ? submitted by /u/Maaanth [link] [comments]

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