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Sunday, October 21, 2018

Does electricity effect water freezing?

Does electricity effect water freezing?

Does electricity effect water freezing?

Posted: 20 Oct 2018 08:09 AM PDT

If you put electrical current through water will it prevent it from freezing? Speed the freezing process up?

submitted by /u/Professional-lounger
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What happens within your body for an itch to occur?

Posted: 20 Oct 2018 02:30 PM PDT

How do celestial bodies become tidally locked?

Posted: 20 Oct 2018 04:22 PM PDT

How can spider legs keep moving after they're detached from the body?

Posted: 20 Oct 2018 10:03 AM PDT

Is there way to determine how fast program will execute task?

Posted: 20 Oct 2018 03:20 PM PDT

I know some programming languages are faster and some slower, can we predict how much time computer need in particular language?

submitted by /u/Dragonaax
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What exactly does it mean for something to be not locally real?

Posted: 20 Oct 2018 05:10 PM PDT

I have a decent familiarity with QFT. I prefer the Debroglie-Bohm interpretation as it allows for excellent models to explain and remember how things behave. It's easy on the intuitions. I realize it violates Belle inequalities in that it requires the universe is not locally real. What exactly does that mean?

submitted by /u/fox-mcleod
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Why does the oxide layer on aluminum protect it from corrosion, but the oxide layer on iron does not?

Posted: 20 Oct 2018 11:16 AM PDT

I've seen a lot of rusted parts on cars, light poles, bolts and everything in between rust all the way through over the years, but aluminum, despite oxidizing also, seems to be immune to the same effects of an oxygen rich environment. Why?

submitted by /u/newtrawn
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What happens to the pieces of an atom after it is split?

Posted: 20 Oct 2018 06:10 PM PDT

I'm not very knowledgeable on the topic of physics or fission in general, but I was curious about what happens to the halves of the atom after it splits. Do they disappear?

submitted by /u/greenbeanleanscreen
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How does removal of leaf fall affect trees in urban environments over a long term?

Posted: 20 Oct 2018 05:49 AM PDT

There are a staggering number of leaves on the ground at the moment, and most of those leaves seem to be removed and ferried off away out of our cities.

Even a gardener at home will largely remove the leaves, with some maybe composting.

Over a very long period of time, how does removing all these recyclable nutrients affect the trees left behind? To what degree are we interrupting the Nitrogen Cycle?

submitted by /u/OhMoSex
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Why are ethanol bottles in the chemistry lab labelled 'staining reagent' ?

Posted: 20 Oct 2018 03:36 PM PDT

Can Saturns "Rings" be individually identified?

Posted: 20 Oct 2018 04:48 AM PDT

Looking at Saturn from a Lay-persons point of view, the rings orbiting the planet always appears to have clear, striated layers. Are these actually layers that can be individually identified and distinguished, or are they more of an ever changing flow of layers. An additional point, in the case that they are individually identifiable, do the layers have name in the way that most astronomical bodies have names?

submitted by /u/Carpy444
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How does one way glass work?

Posted: 20 Oct 2018 05:51 AM PDT

How much of the Indian ocean did we map during the search for MH370?

Posted: 20 Oct 2018 02:57 AM PDT

Why only Anopheles transmit malaria?

Posted: 20 Oct 2018 10:28 AM PDT

Hello,

I'm medical school freshman and we had citology and parasitology cycle this month. We were talking a lot about Culex and Anopheles but lectors didin't emphasize on why only Anopheles transmit plasmodium malaria, vivax, ovale, etc., and Culex don't?

submitted by /u/ocrynox
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How do Space and Time really work when going through a Worm hole?

Posted: 20 Oct 2018 08:11 AM PDT

Are hydrogen bonded, halogen bonded, and Lewis acid-base complexes all due to electrostatic attractions?

Posted: 20 Oct 2018 08:02 AM PDT

Hello,

I'm trying to straighten out some definitions between hydrogen bonding, halogen bonding, and Lewis acid-base complexes. To me, these three association interactions are all at a high level all driven by electrostatic forces (partial positive attracted to partial negative). I have put the following together as part of something I'm writing and want to run it by the r/askscience community (cross posted to r/chemistry as well). If there is something more to these three interactions than the "partial positive / partial negative", then I'd appreciate any suggestions (or recommendations in the literature) as to how to better describe each interaction and the differences.

Association interactions strongly impact phase behavior and thermodynamic properties. Association is the assembling of separate molecular entities into a complex where the bonding between the components is weaker than in a covalent bond. (IUPAC Compendium of Chemical Terminology, Gold Book, 2014). The most common association interactions are:
- Hydrogen bonding occurs when there is an attractive interaction between a hydrogen atom from a molecular fragment such as O–H or N–H and an electron rich region such as a lone pair or a π-bond. (Definition of the hydrogen bond (IUPAC Recommendations 2011), 2011)
- Halogen bonding occurs when there is attractive interaction between an electrophilic region associated with a covalently bonded halogen atom such as R-Cl, R-Br, or R-I and an electron rich region such as a lone pair or a π-bond region (Definition of the halogen bond (IUPAC Recommendations 2013), 2013).
- Lewis acid-base interactions occur where a Lewis acid (an electron pair acceptor) binds to a Lewis base (an electron pair donor) to form an electron donor-acceptor complex (IUPAC Compendium of Chemical Terminology, Gold Book, 2014).
The forces involved in the formation of hydrogen bond, halogen bond, and Lewis acid-base complexes are dominantly electrostatic. In all three cases, it can be said that an electron donor/electron acceptor relationship exists. If an interaction is primarily due to dispersion forces, then it would not be characterized as a hydrogen bond, halogen bond, or Lewis acid-base complex (Definition of the hydrogen bond (IUPAC Recommendations 2011), 2011).
Hydrogen bonding, halogen bonding, and Lewis acid-base interactions typically result in geometry distortion of bonded monomers relative to the un-bonded monomers. In all three cases, bonding typically results in penetration of the van der Waals volumes. For hydrogen bonded and halogen bonded complexes, the primary distortion is a lengthening of the R-H or R-X bond. For Lewis acid-base complexes, there is no typical distortion so bond length and bond angle changes will depend on the compounds involved. In all cases, the geometry distortions caused by complex formation can be observed with IR and Raman spectroscopy.

Thank you in advance for any insights or suggestions you can provide!!

John

submitted by /u/PR_SRK_LKP
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Why are planetary rings not all around planets and instead just form a like like Saturn?

Posted: 20 Oct 2018 07:44 AM PDT

If gravity is omni-directional and debris floats around in space all the time why has none of the planets with rings have other things formed in different directions or even separate spaces on the planet never intersecting?

submitted by /u/TansenSjostrom
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Saturday, October 20, 2018

Why are certain things like knives/swords forged when they could may as well be cut and sharpened from a sheet of metal?

Why are certain things like knives/swords forged when they could may as well be cut and sharpened from a sheet of metal?

Why are certain things like knives/swords forged when they could may as well be cut and sharpened from a sheet of metal?

Posted: 19 Oct 2018 12:03 PM PDT

When making cocktails, using pineapple, espresso or egg white creates a stable foam on the top of the drink. What causes this?

Posted: 20 Oct 2018 05:47 AM PDT

I realised I can't accurately explain it even though I've been using them for years. Is it the same thing? Soluble oils? Enzymes from the pineapple? Help.

submitted by /u/Hashtagbarkeep
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When our vision is blurry, what happens inside of our eyes when we squint to “clarify” the images we see?

Posted: 19 Oct 2018 07:52 PM PDT

How is a behavior passed down through generations?

Posted: 20 Oct 2018 02:57 AM PDT

My dog is a retriever, we never had to teach him to bring stuff back, he just does, unlike other types of dogs. How is this written in his genes, and how can he pass this to his pups?

submitted by /u/StefMag
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Why are certain SpaceX rockets "boattailed" at the front?

Posted: 20 Oct 2018 05:05 AM PDT

I understand they have larger payloads that what would fit in a conventional rocket, but what are the aerodynamic properties of a ballooned front to that of a larger conventional rocket?

Is it due to the weight added from making the rocket larger and completely smooth or are there benefits to this type of method? Ive done research into boattail rockets/ ammunition rounds and found that are beneficial but they dont have a full body after the nose convex to it.

I have also modelled differant noses in Fluent (fluid CAD modeller program) and found additional benefits.

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Any help would be great!

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submitted by /u/Enjineer1
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How big is the earth compared to the universe vs a cell compared to the human body?

Posted: 19 Oct 2018 06:23 PM PDT

If salt is a compound of sodium and chloride, how can there be different types and flavors of salts?

Posted: 19 Oct 2018 11:17 PM PDT

Of course, some salts are intentionally flavored, but if the ingredients are a direct chemical compound, how can they differ? Kosher salt, sea salt, etc. Are there other things in there?

submitted by /u/soulcaptain
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What wavelength of color is reflected off of an object that looks black?

Posted: 19 Oct 2018 01:32 PM PDT

Visible light spans wavelengths of ~400nm - ~700nm with blue light and red light at each end, respectively, and the other colors somewhere inbetween, each with their own corresponding wavelengths. Black, to my understanding is the absence of light and color, yet I can look at black objects and see some detail in them, so clearly some light is being reflected. Is it just white light that is reflected but in smaller amounts making them appear black?

submitted by /u/stargazingskydiver
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Is the Oort Cloud unique to the Solar System or do other stellar systems also have Oort Clouds or their equivalent?

Posted: 19 Oct 2018 12:25 PM PDT

Is electric potential energy equal to the gradient of the vector field of electric force?

Posted: 19 Oct 2018 05:23 PM PDT

Is the angle between the two hydrogen atoms in a water molecule (or any molecule for that matter) by chance, or is it because that specific angle is preferred?

Posted: 19 Oct 2018 04:48 PM PDT

If so, what's the preferred reason and can they be forced to rearrange at different angles?

submitted by /u/Lone_Narrator
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Periodic Table of Elements, are there other manufactured elements?

Posted: 19 Oct 2018 04:13 PM PDT

I was taught that the periodic table of elements is a table of all known elements; And I was also taught that elements where created by the fusion in the sun. I've been hearing about scientists creating fake stars in an attempt to make energy I think its a type of fusion or fission; Which got me thinking, is the periodic table still up to date? Are there more elements, and is it possible that bigger stars make more elements? What cool things could we expect?

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Sorry if this is the wrong flair, evidently I'm pretty bad at science!

submitted by /u/shengch
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Does gravity affect electricity in any way?

Posted: 19 Oct 2018 04:25 AM PDT

Because less there is pressure,harder it get to water to get solid,is it possible to have so little pressure that even at absolute zero the water don't become ice?

Posted: 19 Oct 2018 12:12 PM PDT
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Friday, October 19, 2018

If we've only had plastics for the last 80 years, how do we know it will take thousands of years to decompose?

If we've only had plastics for the last 80 years, how do we know it will take thousands of years to decompose?

If we've only had plastics for the last 80 years, how do we know it will take thousands of years to decompose?

Posted: 18 Oct 2018 06:01 PM PDT

How come we are able to detect planets thousands (millions?) of light years away from us, but we have yet to determine with 100% certainty whether or not there is a ninth planet in our solar system?

Posted: 19 Oct 2018 04:15 AM PDT

I've been trying to teach myself a little about time, but as someone with little knowledge to base my understanding off of, I am having a hard time understanding why time passes differently if you are standing on a mountain than if you are sitting in a valley. Could you explain this concept to me?

Posted: 19 Oct 2018 12:14 AM PDT

Outside of the moral implications for humans, is cannibalism within a given species harmful?

Posted: 19 Oct 2018 03:03 AM PDT

What effect, if any, does the earth’s rotation have on weather patterns?

Posted: 19 Oct 2018 03:14 AM PDT

Michael from VSauce explained in one of his videos that "gravity" may not be an independent force but the result of objects trying to move in a straight line through time in curved time space. How does this fit with string theory/ why isn't there more information on this theory?

Posted: 18 Oct 2018 09:47 PM PDT

The video is on YouTube and titled "Which way is down?"

submitted by /u/xXCANCERGIVERXx
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When a virus injects a cell with DNA, what makes the cell able to follow the instructions? Could the process be controlled for medically useful reactions?

Posted: 18 Oct 2018 08:09 PM PDT

From what I've remember in school, viruses inject a living cell with DNA in a way that somehow makes it listen to that instead of what it already had, reproducing virus after virus until the cell is depleted. How does the new DNA supplant the existing DNA?

Once replaced, what enables the cell to turn itself into something else? I was under the impression that stem cells were valuable for their special ability to do something similar?

If viruses are reproducing that effect, can we use them?

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I'm sorry if this is super obvious or simplistic, but I tried to research it today and everything I found was not helpful at all.

submitted by /u/DanNeider
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What would the Environmental/Physical Constraints be of sending Garbage to the Bottom of the Ocean?

Posted: 19 Oct 2018 06:25 AM PDT

With the great pressure at those depths it would compact all the plastic, It wouldn't mess with 99% of wildlife, and all you need to do is contain and weigh-down the garbage. If you make compact Cubes of it (Like crushing Cars) how well would this work? Is it only a Cost thing? Any Environmental concerns I'm not considering? Other than the obvious Fluids etc contamination which is likely much less than our current state. Would the pressure cause the decomposition of this material faster? Would small pieces just continuously break off making it no better than traditional dumping? Would a Net to contain this break off work or be a viable solution?

Any other Questions or In-site would be appreciated.

submitted by /u/Engineer_ThorW_Away
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What's between protons/neutrons and electrons?

Posted: 19 Oct 2018 06:03 AM PDT

How Are Supermassive Black Holes Formed?

Posted: 18 Oct 2018 11:28 PM PDT

Why is the Barium Ion paramagnetic if it has no unpaired electrons?

Posted: 18 Oct 2018 08:22 PM PDT

Really confused on this and I am having a lot of trouble finding any articles with explanations on this. Was wondering if any chemists knew the answer.

submitted by /u/TheLegendaryTrev
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How accurate are mental health diagnoses? Isn’t it heavily based on what the patient says they are experiencing without any biological or chemical markers to validate the claims?

Posted: 18 Oct 2018 04:13 PM PDT

Also, isn't it fair to say that due to the nature of mental illness the actual people who are mentally ill probably aren't aware enough, or are able to avoid seeking treatment whereas people who are overly sensitive may seek treatment for something that isn't actually in need of psychological treatment?

submitted by /u/karpomalice
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According to the Theory of Evolution and the Theory of Plate Tectonics and Continental Drift, how did humans get all throughout the world?

Posted: 18 Oct 2018 11:44 PM PDT

From my understanding of below basic biology of animals and adaptation, how did humans, or the mammal(s) that evolved to eventually become humans, live in certain climates? If at one point Pangea existed, and eventually the land masses break apart, how would the mammals of that continent become human? Mammals need certain climates to survive, so in a cold climate like Russia or Alaska, how did the certain mammal that became human survive the conditions of weather and climate in a place like russia?

submitted by /u/Warlock9510
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Some aminoacids need sodium to be absorbed?

Posted: 18 Oct 2018 02:37 PM PDT

if an aminoacid is absorbed with the help of sodium- dependent transporters does that the AA must be taken with sodium in order to be absorbed from the intestinse or the blood sodium levels have an impact on the rate of absorbtion?

submitted by /u/tisho23
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Is there reasearch done for how color enhances memory?

Posted: 18 Oct 2018 01:23 PM PDT

I'm looking for research that I could have sworn I've read but now I can not find.

I'm looking for an experiment were the color a word is written in is the same as the color of the object that word represents eg. Writing firetruck in red, or grass in green.

Has anyone read and remember any research like this?

submitted by /u/Shupsta
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What are the main cognitive mechanisms, either conscious or subconscious in nature, guiding speech production in conversational settings ?

Posted: 18 Oct 2018 03:51 PM PDT

I was always under the impression that engaging in conversations involved mostly subconscious thinking, as opposed to other communication activities such as giving a speech off a text/memory or giving a presentation by reading things off slides, both of which typically have a more dominant conscious cognitive component. When we converse with a friend for instance, we usually just translate whatever thoughts popping in our minds into words and sentences, with minimal conscious filtering/selection and structuring... But then I thought about the case of purely improvisational talking situations such as improv theatre or freestyle rapping, and how speech production in these is even more subconsciously-dominated, implying that my initial intuition might be wrong and that there might be an important conscious component to speech production in typical conversation-making.

All of which brings me to the following question(s): in a conversational situation, how does the mental process governing speech production usually go ? Upon hearing and understanding a question, do our brains subconsciously come up with a certain structure to our answers, which we then proceed to subconsciously follow as we speak ? Or is that structuring more of a conscious process ? Or is there no structuring process at all involved, and instead -as I've described at the very beginning- what happens is a purely subconscious translation of whatever thoughts our brains generate at the moment of us talking/responding ?

To use Daniel Kahneman's language, by subconscious I mean system 1 thinking and by conscious its system 2 counterpart. I apologize if my question and terminology are confusing as I am no psychology/cognitive science expert, but this question has been perplexing me a lot lately !

submitted by /u/MC_Tikchbila
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Can the energy of a particle be deduced from its De Broglie wavelength?

Posted: 18 Oct 2018 01:12 PM PDT

I know that for a single photon we have : E = h * f

On the other hand we have the De Broglie equation : LambdaB = h / p, which as far as I know is true for any particle.

So from the De broglie equation we can deduce a "de Broglie wavelength" (lambdaB) for any particle, and from that wavelength, a frequency "fB" (as de Broglie frequency).

So I wondered if we could have a relation between the total energy of said particle, and the de Broglie frequency "fB", in a fashion similar to E = h f, which however would be true for any particle. (or a formula that would work in both cases)

And what formula would give the energy of a gluon or a graviton which are massless?

submitted by /u/EresArslan
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Does compulsory therapy work? Why or why not?

Posted: 18 Oct 2018 08:24 PM PDT

Can Outside noises evoke images in our dreams?

Posted: 18 Oct 2018 04:01 PM PDT

Today, I set my morning alarm. I have had the same alarm tone for one week straight. Today, I was so used to hearing it, that i could hear the alarm in a dream I was having. That made me wonder, could any sound do that? I was curious and kept thinking on the subject today. So I wondered "Could the sounds of the outside evoke thoughts in our dreams?" For example, if you played a voice recording of your friend, and it didn't wake you, would you think things about, or would your friend appear, in your dream?

submitted by /u/blkrj33
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How do freezer burns happen?

Posted: 18 Oct 2018 08:37 AM PDT

I was always thinking that the fast movement of heated atoms/molecules was causing burns since these fast moving particles destroy our skin cells because of the High Amounts of Energy. So I recently found myself stuck when i thought about Freezer burns. How do Very cold particles cause such burns? I thought cold meant absence of Energy, am I missing something? I'd Love to hear an answer, thanks in Advance!

submitted by /u/MisterR4Z0R
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Are there any images of de novo synthesized nucleotides?

Posted: 18 Oct 2018 03:18 PM PDT

It is my understanding that nucleotides are synthesised in the liver and are ubiquitous intracellular compounds. Have they ever been extracted/isolated and imaged or had their structure solved, or is this beyond our capabilities?

Cryo EM crystallography, NMR should be appropriate techniques to determine the structure and atom disposition of molecules this size. I am struggling to find the data. Any pointers?

submitted by /u/ImportantDingo
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