Was the super massive black hole at the center of the Milkyway ever anything else?

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• Was the super massive black hole at the center of the Milkyway ever anything else?
• Does the order in which you eat your foods have any effect on nutrition or digestion?
• What are the advantages and disavantages of 50hz and 60hz electricity ?
• If inbreeding is bad, how can many life forms breed asexually without a problem?
• Are moving tectonic plates essential for a planet to harbor life?
• What happens if we shoot an antiproton at a heavy element atom?
• How are Calcium(+2) ions able to form ionic bonds with 4 atoms at once?
• What would happen to the LHC if there was an earthquake in Geneva?
• There are infinite regular 2 dimensional polygons. There are a handful of regular 3 dimensional polyhedrons. Are there regular shapes in 4 dimensions? In higher dimensions? How many?
• What are the criteria for having a species declared extinct? How are scientists so sure that there is not one single animal of a species left?
• How do coatings on solar cells increase the efficiency of the solar panel?
• Over time, do the wavefunctions of the electrons in our human bodies oscillate (not particle spin, but the actual wavefunction) like standing waves?
• Solar panels, in layman's terms, absorb sunlight and convert it into usable energy. Does that mean that solar panels can also absorb nuclear energy emitted in a radioactive environment?
• Dumb quiestion: Can lone pairs occur in Ionic Bonding?
• Why does the electron's charge stay constant even under relativistic velocities?
• Why doesn't a star's gravity disturb its planets' moons?
• What spectrum of light do lightbulbs emit?
• Can someone explain conformal gravity to me?

Was the super massive black hole at the center of the Milkyway ever anything else? Posted: 06 Nov 2017 04:26 AM PST submitted by /u/SaltyYingMain [link] [comments]

Does the order in which you eat your foods have any effect on nutrition or digestion? Posted: 05 Nov 2017 05:05 PM PST Say, for instance, I eat my dessert first before my meal. Would this have any alternate effect on my body than it would eating them the other way around? submitted by /u/Toast__of__War [link] [comments]

What are the advantages and disavantages of 50hz and 60hz electricity ? Posted: 05 Nov 2017 01:10 PM PST submitted by /u/moragisdo [link] [comments]

If inbreeding is bad, how can many life forms breed asexually without a problem? Posted: 06 Nov 2017 03:32 AM PST submitted by /u/empire314 [link] [comments]

Are moving tectonic plates essential for a planet to harbor life? Posted: 06 Nov 2017 05:43 AM PST submitted by /u/strama [link] [comments]

What happens if we shoot an antiproton at a heavy element atom? Posted: 05 Nov 2017 01:08 PM PST Would we create an atom of the element below it in the periodic table or would the energy of the annihilation be enough to blow the nucleus into smaller bits? submitted by /u/Jadashi [link] [comments]

How are Calcium(+2) ions able to form ionic bonds with 4 atoms at once? Posted: 05 Nov 2017 08:00 PM PST How would this affect the overall charge of the molecule? I understand that calcium has a +2 charge, but when observed in structures such as calcium hydroxyapatite, it is able to bind to up to 4 oxygen atoms. Similarly, other alkaline metals such as Magnesium(+2) are able to bind to EDTA with the same 4 bonds occurring. HOW??? edit: wording submitted by /u/NewBeerNewMe [link] [comments]

What would happen to the LHC if there was an earthquake in Geneva? Posted: 05 Nov 2017 06:04 PM PST submitted by /u/xbnm [link] [comments]

There are infinite regular 2 dimensional polygons. There are a handful of regular 3 dimensional polyhedrons. Are there regular shapes in 4 dimensions? In higher dimensions? How many? Posted: 05 Nov 2017 12:47 PM PST submitted by /u/jsgunn [link] [comments]

What are the criteria for having a species declared extinct? How are scientists so sure that there is not one single animal of a species left? Posted: 05 Nov 2017 03:20 PM PST submitted by /u/santafesmike [link] [comments]

How do coatings on solar cells increase the efficiency of the solar panel? Posted: 05 Nov 2017 06:28 PM PST If you have a coating with a specific index of refraction and then some sort of silicon cell with another index, how does the efficiency of the solar cell increase? I know that you generate different reflection coefficients, but how does minimizing the reflection coefficient actually increase the energy in the cell? Isn't the energy already being reflected away from the solar cell? submitted by /u/blindedsilver [link] [comments]

Over time, do the wavefunctions of the electrons in our human bodies oscillate (not particle spin, but the actual wavefunction) like standing waves? Posted: 05 Nov 2017 04:09 PM PST I'm visualizing the electrons of atoms that constitute part of our human bodes as wavefunctions that each looks like a 3D cloud of a probability density function. At each spatial-temporal point <x,y,z, t> (I know this signature is somewhat inaccurate) there is an intensity/probability-density associated with observing the particle there. My question is whether the described probability cloud of the electron shell of an atom changes radically from one moment to another? In other words, suppose you take a cross section heatmap-screenshot right through the "center" (mean intensity point of the wavefunction) a time t0, and then take a screenshot of the same cross section with reference to the particle's center (so, it doesn't matter if the human moves slightly) at t1>t0, does the wave function look the same? If no, what is the frequency and what does it depend on? The reason I'm asking is because I remember reading about standing waves in the context of quantum mechanics many years ago and because I also heard the expression time-dependent Schroedinger equation. submitted by /u/Helicobacter [link] [comments]

Solar panels, in layman's terms, absorb sunlight and convert it into usable energy. Does that mean that solar panels can also absorb nuclear energy emitted in a radioactive environment? Posted: 05 Nov 2017 10:25 PM PST This is not hypothetical. It may sound like that, but my intention is different. submitted by /u/aenigmata [link] [comments]

Dumb quiestion: Can lone pairs occur in Ionic Bonding? Posted: 05 Nov 2017 07:48 PM PST submitted by /u/Sheppardino [link] [comments]

Why does the electron's charge stay constant even under relativistic velocities? Posted: 05 Nov 2017 08:43 AM PST After looking up the question on google it seems all experiments show that the charge of an electron is independent from its velocity. Is there a mathematical background or theory why this is the case? What would happen if it did change like mass does at relativistic velocities? submitted by /u/cutti [link] [comments]

Why doesn't a star's gravity disturb its planets' moons? Posted: 05 Nov 2017 11:47 PM PST submitted by /u/edwardpuppyhands [link] [comments]

What spectrum of light do lightbulbs emit? Posted: 05 Nov 2017 02:06 PM PST The sun emits the full spectrum. What spectrum of that do led and common lightbulbs emit? submitted by /u/klyde_donovan [link] [comments]

Can someone explain conformal gravity to me? Posted: 05 Nov 2017 11:34 AM PST I've tried searching online, but I haven't found anything that explains it in a way I can understand. submitted by /u/somethingX [link] [comments]

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On Earth, we have time zones. How is time determined in space?

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• On Earth, we have time zones. How is time determined in space?
• Since dinosaurs were discovered far below the earths surface covered in dirt, how does the earth gradually pile dirt on itself, forming layers covering up history over the past few centuries?
• When people are born with extra, functioning appendages, are they also born with unique brain regions for controlling them?
• Does sleep deprivation cause permanent damage to the brain?
• How is it that the recently discovered “oldest spiral galaxy”, A1689B11, can be so well formed yet exist only 2.6 billion years after “Big Bang”?
• Do you become more contagious as a cold/flu progresses, or do you pose the same risk to others as soon as symptoms begin to show?
• How is meat "aged"; what is occurring at the molecular level and why doesn't the meat spoil? (Also, cheese)
• Why do older models of cars have long antennas, while newer models have short ones or none at all?
• Why is the colour of an atomic explosion white, and not blue?
• What is aether?
• What benefits and disadvantages does Daylight Savings Time provide, economically?
• Why are many babies born blonde haired but fade to a different color at a later age?
• Why do some human organs regenerate but others don’t?
• Does warm water evaporate quicker than cold water? If so, by how much?
• Do sea creatures have a dominant hand/claw/tentacle?
• Why does NIST use a 60kHz frequency to transmit a 1 byte per second signal? Wouldn’t a lower frequency travel further more reliably?
• Is there any evidence that untargeted murders have shifted from serial killing to parallel killing over the past decade or two?
• Have humans/organisms caused an increase on the overall mass of Earth? ie man made objects or birth of organisms?
• Why don't we have the technology to desalinate ocean water for human use?
• Can fish see color? And if not, why are they so colorful?
• Can allergies of a person with Multiple Personality Disorder vary according to their different personalities?
• How does a bullet perfectly follow the path of the barrel, rather than bounce and vibrate against the sides?

On Earth, we have time zones. How is time determined in space? Posted: 04 Nov 2017 06:58 PM PDT submitted by /u/mikes2123 [link] [comments]

Since dinosaurs were discovered far below the earths surface covered in dirt, how does the earth gradually pile dirt on itself, forming layers covering up history over the past few centuries? Posted: 04 Nov 2017 11:58 PM PDT submitted by /u/squanto420sqanching [link] [comments]

When people are born with extra, functioning appendages, are they also born with unique brain regions for controlling them? Posted: 04 Nov 2017 11:10 AM PDT submitted by /u/paulshnargas [link] [comments]

Does sleep deprivation cause permanent damage to the brain? Posted: 05 Nov 2017 06:38 AM PST I just got over a period of insomnia in which I was regularly going without sleep for several days at a time (this lasted about two weeks, in which I was maybe averaging four hours of sleep a night). Having recovered, I feel fine, but I have anxiety about what this might have done to my future academic performance. Should I be concerned? submitted by /u/compositematerials [link] [comments]

How is it that the recently discovered “oldest spiral galaxy”, A1689B11, can be so well formed yet exist only 2.6 billion years after “Big Bang”? Posted: 05 Nov 2017 05:21 AM PST submitted by /u/aiYeoU [link] [comments]

Do you become more contagious as a cold/flu progresses, or do you pose the same risk to others as soon as symptoms begin to show? Posted: 05 Nov 2017 04:31 AM PST submitted by /u/BrotherGrim [link] [comments]

How is meat "aged"; what is occurring at the molecular level and why doesn't the meat spoil? (Also, cheese) Posted: 05 Nov 2017 02:27 AM PST Question in the title. I'm fascinated by what's actually occurring in the process of hanging and aging meat. I understand that you need to agree meat at least a little bit too drain off some blood but what else? Some people use large amounts of salt to make their cheaper bits of meat look and taste better whilst other times people tenderise it with a mallet. What's going on there too? And if anyone is interested enough, what the hell's up with cheese and maturing that for many years? submitted by /u/Buggaton [link] [comments]

Why do older models of cars have long antennas, while newer models have short ones or none at all? Posted: 05 Nov 2017 05:41 AM PST submitted by /u/kevin_time-spacey [link] [comments]

Why is the colour of an atomic explosion white, and not blue? Posted: 05 Nov 2017 05:21 AM PST As you can see from this image the colour of stars depend on the temperature of the star. My search shows that an atomic explosion is about 106 Kelvin. So shouldn't the colour of the explosion be blue? submitted by /u/asking_about_things [link] [comments]

What is aether? Posted: 05 Nov 2017 03:08 AM PST Not trusting Wikipedia because I aint understanding that. submitted by /u/PM_ME_DEAD_INSECTS [link] [comments]

What benefits and disadvantages does Daylight Savings Time provide, economically? Posted: 04 Nov 2017 08:01 PM PDT submitted by /u/sexrockandroll [link] [comments]

Why are many babies born blonde haired but fade to a different color at a later age? Posted: 04 Nov 2017 03:15 PM PDT submitted by /u/CauseImBatman08 [link] [comments]

Why do some human organs regenerate but others don’t? Posted: 05 Nov 2017 04:02 AM PST submitted by /u/HaveASit [link] [comments]

Does warm water evaporate quicker than cold water? If so, by how much? Posted: 05 Nov 2017 03:24 AM PST submitted by /u/lathaz [link] [comments]

Do sea creatures have a dominant hand/claw/tentacle? Posted: 04 Nov 2017 02:48 PM PDT submitted by /u/Lucas_csgo [link] [comments]

Why does NIST use a 60kHz frequency to transmit a 1 byte per second signal? Wouldn’t a lower frequency travel further more reliably? Posted: 04 Nov 2017 04:13 PM PDT (Sorry, should have added in the title "For the broadcast of the UTC time signal for receipt by atomic clocks and wristwatches in the continental US.") I searched the subreddit and Google and found a lot of history and interesting details, but not the answer to this question. I know that the lower the frequency, the larger the antenna must be (like the enormous land-based ELF broadcasters that were used for deepsea underwater submarine radio), but surely1 there's a happy medium between 60kHz and 76Hz or whatever the ELF solution was that would more reliably reach the continental US and still be more than capable of transmitting 8bps. 1 Citation needed. That's why I'm asking the question. My education in terms of Electricity and Magnetism is only at an AP Physics level, anad that was 19 years ago, so as you can see I may be missing something fundamental here. submitted by /u/FrontColonelShirt [link] [comments]

Is there any evidence that untargeted murders have shifted from serial killing to parallel killing over the past decade or two? Posted: 04 Nov 2017 09:58 PM PDT We've heard a lot about mass shootings, stabbings, and other indiscriminate attacks in the news over the past ten or twenty years. What I'm wondering is whether this represents a culturally-motivated shift in the behavior of nutjobs from serial killings to parallel killings, or an actual increase in indiscriminate murder. submitted by /u/Hydropos [link] [comments]

Have humans/organisms caused an increase on the overall mass of Earth? ie man made objects or birth of organisms? Posted: 04 Nov 2017 07:01 PM PDT submitted by /u/At0mical [link] [comments]

Why don't we have the technology to desalinate ocean water for human use? Posted: 04 Nov 2017 11:53 PM PDT submitted by /u/Spider-land [link] [comments]

Can fish see color? And if not, why are they so colorful? Posted: 05 Nov 2017 01:45 AM PST submitted by /u/DracoMundo [link] [comments]

Can allergies of a person with Multiple Personality Disorder vary according to their different personalities? Posted: 04 Nov 2017 01:06 PM PDT I know it may not be a very scientific way to discover things but I'm watching 'Split' and the psychiatrist in one scene is doing a presentation on Multiple Personality Disorder and she claims that someone can suffer from an allergy to Bee stings in one personality and not suffer the allergy in one of their other personalities, I don't know but Biologically speaking it doesn't sound right to me? submitted by /u/djdjdjordje [link] [comments]

How does a bullet perfectly follow the path of the barrel, rather than bounce and vibrate against the sides? Posted: 04 Nov 2017 11:26 AM PDT Wouldn't each firing have enough variance that the bullet would start ricocheting off the sides of the barrel and slow the bullet down dramatically? submitted by /u/ubccompscistudent [link] [comments]

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What significant differences are there between humans of 12,000 years ago, 6000 years ago, and today?

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• What significant differences are there between humans of 12,000 years ago, 6000 years ago, and today?
• How catastrophic is an earthquake for deep sea creatures?
• Why can't we have a system for dividing by zero the same way we have imaginary numbers?
• Why don't modern cellphones create interferences near speakers any more?
• How does refraction work?
• Doesn't voltage in parallel violate the laws of conservation?
• Does the size of the animal affect the number of RBCs?
• Could a hydrogen bomb use the water in oceans as fuel?
• Reading the post about Uranus and it’s 90 degree axis - Why do planets rotate to start with?
• What things in nature are a binary outcome but not really a 50/50 chance?
• Can a powerful electrical charge go through a non conductor?
• At the top of the Space Elevator, would the centrifugal force be significant enough to feel like reverse gravity?
• Why does salt water have a lower freezing point if it has stronger intermolecular force when compared to water?
• Do animals move while in hibernation?
• Do cats/dogs from foreign, faraway places interact differently than they do with cats/dogs from their own geographic region?
• Is the black layer of my microwave’s window—with lots of little holes—what stops the radiation from getting through the glass?
• Why do nuclear bombs lose power over time?
• If we had all of today's technology in Pompeii in 79 AD, could we have predicted the eruption of Mt. Vesuvius? Could we have done anything to save the city, or at least its inhabitants?
• [University Engineering] How do units squeeze through a Laplace transform?
• What happens when photons hit a single electron atom from multiple angles simultaneously?
• What is the largest organic molecule?
• I just read that the heat death of the universe is predicted to be approx 10^103 years from now, how was that number calculated?

What significant differences are there between humans of 12,000 years ago, 6000 years ago, and today? Posted: 03 Nov 2017 05:46 PM PDT I wasn't entirely sure whether to put this in r/askhistorians or here. submitted by /u/awkwardtechdude [link] [comments]

How catastrophic is an earthquake for deep sea creatures? Posted: 04 Nov 2017 04:12 AM PDT submitted by /u/6873487 [link] [comments]

Why can't we have a system for dividing by zero the same way we have imaginary numbers? Posted: 03 Nov 2017 09:48 AM PDT submitted by /u/SevenTwenty720 [link] [comments]

Why don't modern cellphones create interferences near speakers any more? Posted: 03 Nov 2017 08:12 AM PDT 15 years ago, when my cellphone was near speakers, I'd know a few seconds before that someone was going to call, because the cellphone getting in touch/syncing with the nearest GSM relay would create interferences and the speakers would go BZZZ BZZZZZ BZBZBZ or something like that. Now, why don't modern phones do that any more? I've looked for an answer, and found some clues about why it DID that before, although I couldn't find any clear answer. Most commonly found answer has something to do with (pardon my lack of technical english) frequency bursts going from 0 (not receiving) to X MHz (X being the carrier's frequency) while syncing the call. Even if I can understand why this would create interferences, I'm wondering what has changed today, and why we don't get thoses burst interferences any more. Are modern phones always emitting/receiving, so that there are no "0 to X MHz on syncing" bursts anymore? is it a change in frequencies being used by carriers? something else? submitted by /u/leducdeguise [link] [comments]

How does refraction work? Posted: 04 Nov 2017 05:19 AM PDT I understand that light "slows down" in different mediums. How does the light interact with the different medium? submitted by /u/Proberbly_superman [link] [comments]

Doesn't voltage in parallel violate the laws of conservation? Posted: 04 Nov 2017 07:13 AM PDT Alright, so the rule states that the voltage is the same across elements in parallel. So basically if you have two resistors in parallel, they both get the same voltage. What i don't understand is how does that not violate the laws of conservation of energy? Does that not create energy out of seemingly nowhere? You could just connect resistors in parallel and get more energy. Example: 10v supply, with a single 10Ω resistor connected to the circuit. That is 10w power. Add another 10Ω resistor in parallel, and you have 20w power. What's up with that? submitted by /u/Niev [link] [comments]

Does the size of the animal affect the number of RBCs? Posted: 04 Nov 2017 03:18 AM PDT Please refer me to textbooks or scientific papers that talk about this subject. submitted by /u/icymoonchaser [link] [comments]

Could a hydrogen bomb use the water in oceans as fuel? Posted: 04 Nov 2017 07:08 AM PDT And how big would it have to be? submitted by /u/IsUserNameIsntTaken [link] [comments]

Reading the post about Uranus and it’s 90 degree axis - Why do planets rotate to start with? Posted: 03 Nov 2017 12:49 PM PDT submitted by /u/squirrelforbreakfast [link] [comments]

What things in nature are a binary outcome but not really a 50/50 chance? Posted: 04 Nov 2017 04:28 AM PDT For a crude example (there are exceptions of course) humans are born as either a male or female, but despite this being a 1 or the other scenario is it as clear cut at 50/50? Is one more likely than another? This question isnt just about humans at birth its for all of nature submitted by /u/TheIncompetenceOfMan [link] [comments]

Can a powerful electrical charge go through a non conductor? Posted: 04 Nov 2017 03:58 AM PDT For example, if I were to touch and immensely powerful electrical charge using only a small piece of rubber could it still shock me? submitted by /u/Fleegenson [link] [comments]

At the top of the Space Elevator, would the centrifugal force be significant enough to feel like reverse gravity? Posted: 03 Nov 2017 09:31 PM PDT Here's a diagram of what I'm talking about: https://upload.wikimedia.org/wikipedia/en/2/20/Space_Elevator_Schematic.jpg You're standing in the space station at the top of the cable which is orbiting around the earth beyond geostationary orbit. The centrifugal force keeps the cable aloft, but it also means that anyone at the top should feel a force akin to reverse gravity up there. Could you build a space hotel at the top of the cable? submitted by /u/Rownik [link] [comments]

Why does salt water have a lower freezing point if it has stronger intermolecular force when compared to water? Posted: 03 Nov 2017 10:15 PM PDT "Since ethanol molecules aren't as sticky as water molecules, the temperature has to be a lot lower before the forces of attraction overcome the energy of motion and fix the molecules into their array sites. So, that's why alcohol has a much lower freezing point" In this article (https://news.ncsu.edu/2011/07/wms-alcohol-freezing/), it states that ethanol has a higher freezing point than water's because it has weaker intermolecular force. However, salt water has a lower freezing point and stronger intermolecular force than water. https://www.linkedin.com/pulse/why-does-adding-salt-increase-boiling-point-water-ganesh-tingare Also this website states that "The ion-dipole interaction [of salt water] is stronger than the hydrogen bonding between the water molecules" submitted by /u/xxxk1dz_b0pzxxx [link] [comments]

Do animals move while in hibernation? Posted: 03 Nov 2017 03:44 PM PDT Humans and (many) animals move while sleeping. Do they also move in hibernation? submitted by /u/weissnicht01 [link] [comments]

Do cats/dogs from foreign, faraway places interact differently than they do with cats/dogs from their own geographic region? Posted: 04 Nov 2017 01:09 AM PDT Ignoring obvious differences in spoken languages, it's pretty easy to identify strange/unusual mannerisms and nonverbal language used by people from other cultures. If a cat or a dog were taken from, say, SE Asia and brought to the Midwestern US, would local Midwestern US cats/dogs interact with that cat/dog differently than they would with one from, say, a different region of the US? Have there been any studies on this? I'm just curious as to whether cats/dogs develop noticeably different methods or styles of communication from one region of the globe to another. submitted by /u/Cessnateur [link] [comments]

Is the black layer of my microwave’s window—with lots of little holes—what stops the radiation from getting through the glass? Posted: 03 Nov 2017 02:11 PM PDT Are the holes smaller than the wavelength so it blocks the radiation, or does it serve some other purpose? If it is something else, what stops the radiation from going through the glass? submitted by /u/embiggen_Japan [link] [comments]

Why do nuclear bombs lose power over time? Posted: 03 Nov 2017 07:50 PM PDT submitted by /u/StealthBacon [link] [comments]

If we had all of today's technology in Pompeii in 79 AD, could we have predicted the eruption of Mt. Vesuvius? Could we have done anything to save the city, or at least its inhabitants? Posted: 03 Nov 2017 07:44 PM PDT Reading Wikipedia, I learned that there were precursor earthquakes prior to the eruption, but people ignored them as earthquakes were common in the area. Could today's scientists connect those earthquakes to volcanic activity and issue evacuation orders, or some other countermeasures? Are there any other signs of the coming eruption that we could detect using today's technology? submitted by /u/Abdiel_Kavash [link] [comments]

[University Engineering] How do units squeeze through a Laplace transform? Posted: 03 Nov 2017 12:31 PM PDT Can someone help me understand how units shift around through a Laplace transform? I'm looking at an RLC circuit in the time domain, and I can understand that just fine. I can mostly see how to draw it up in the s-domain but I'm getting lost on keeping track of my units. I want to build the equations in terms of volts, because I'm using KVL. submitted by /u/Khufuu [link] [comments]

What happens when photons hit a single electron atom from multiple angles simultaneously? Posted: 03 Nov 2017 11:00 PM PDT Does the electron cloud absorb both photons or just one? Does the nuclei absorb the missed photon? submitted by /u/JoeOfTex [link] [comments]

What is the largest organic molecule? Posted: 03 Nov 2017 10:48 AM PDT I've been learning organic chemistry, about molecules like CH4 and C2H6, and was wondering how big they got. Like how many carbons and hydrogens does the biggest one have? submitted by /u/jeray2000 [link] [comments]

I just read that the heat death of the universe is predicted to be approx 10^103 years from now, how was that number calculated? Posted: 03 Nov 2017 08:11 PM PDT submitted by /u/CptSnowcone [link] [comments]

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