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Saturday, September 22, 2018

Would bee hives grow larger if we didn't harvest their honey?

Would bee hives grow larger if we didn't harvest their honey?


Would bee hives grow larger if we didn't harvest their honey?

Posted: 21 Sep 2018 09:02 AM PDT

When a lightning bolt strikes the ground, what happens to it once the ground absorbs it?

Posted: 22 Sep 2018 03:33 AM PDT

How do we know that gravity's effect on time dilation is not an artifact of the effect that gravity has on the electrons orbiting the cesium atom used in atomic clocks to detect time dilation?

Posted: 22 Sep 2018 12:28 AM PDT

How do we know how much times we can recycle plastic, paper, batteries, etc.?

Posted: 22 Sep 2018 07:22 AM PDT

Why is running slightly uphill so much harder than running level?

Posted: 22 Sep 2018 03:57 AM PDT

Can it all be explained by gravity and physics, or is there something about the human body that's just not meant to run at an incline?

submitted by /u/Sayer007
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Do Corvids of different species cooperate in certain situations, and why?

Posted: 22 Sep 2018 05:15 AM PDT

The title. Below are just the two personal observations that prompted my question, which are only here to clarify what i mean with "cooperate":

 

-A bird of prey caught a smaller bird, and both Carrion crows and European magpies, perching on the same branches, "mobbed/scoldet" it their usual manner "together".

-A Carrion crow, a European Magpie, and two Eurasian jays searched for food "together". Wherever one went, the others followed, to search for food "together". I could not see any aggression between any of these birds.

submitted by /u/Tawwz
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Why are the lakes in the far north of North America oval shaped and oriented n/s?

Posted: 21 Sep 2018 06:36 PM PDT

See a sample screenshot here: https://imgur.com/a/8nC6ik0

submitted by /u/conorthearchitect
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At what point in the atmosphere would a person need a space suit to survive?

Posted: 21 Sep 2018 09:34 AM PDT

How do permanent markers work?

Posted: 21 Sep 2018 04:56 PM PDT

Why does a flu shot make your arm hurt a day or two later?

Posted: 21 Sep 2018 07:47 PM PDT

I recently got my flu shot, and I noticed that a day or so later my arm was "sore". This wasn't from the needle, but it felt like I'd been punched and had a bruise (though nothing was visible). I realized that this happens for most vaccinations (I'm old enough that aside from a flu shot the only other ones are things like a Shingles vaccines, tetanus boosters, etc.) Why does this happen?

submitted by /u/dkozinn
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whys it unlikely that a beta particle would have the maximum possible energy?

Posted: 22 Sep 2018 03:40 AM PDT

I know rogue planets (planet-sized objects that don't orbit a star) are theorized in the galaxy but are rogue stars (stars that don't orbit a galaxy) also theorized? Any theories on how prevalent they are?

Posted: 21 Sep 2018 05:18 AM PDT

Why aren’t different dog breeds considered different species?

Posted: 21 Sep 2018 05:55 PM PDT

Animal taxonomy started by classifying animals into different groups of extremely different phenotypes. If chihuahuas and german shepherds were around during Aristotle's time, they would be classified as wildly different animals.

Animal species come into being by selective breeding, whether forced or via natural selection. So why are beagles and mastiffs the same species when, say, red squirrels and gray squirrels are different species?

submitted by /u/BoredAtWork38
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Why is that that "flu season" seems to be in the fall/winter months? Is the virus less communicable throughout the spring and summer?

Posted: 21 Sep 2018 09:44 AM PDT

How fast are molecules travelling in interstellar/intergalactic space?

Posted: 21 Sep 2018 09:33 AM PDT

I know there may not be a good answer since there is no absolute reference frame in space, but do we know what the relative speeds of molecules in space are (to each other perhaps)?

I was wondering this while looking at this chart and seeing stuff like "one molecule per cubic cm or cubic meter" and reading a bit about the mean free paths (and noticing a lack of them for the more extreme vacuums). Do molecules in deep space have other molecules whizzing by them at relativistic speeds? Or are they all relatively stationary to one another? Somewhere in between?

Thanks :)

submitted by /u/Nowbob
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If I’m facing a wind going 65 mph and I drive my car directly into it and proceed to travel at 65 mph, does it take twice the amount of gas as if there no wind at all, and would take less gas than if I was driving in the same direction as the wind going he same speed as the wind?

Posted: 21 Sep 2018 01:43 PM PDT

Given that photons have energy, and mass depends on the energy of an object, how are photons massless?

Posted: 21 Sep 2018 11:17 AM PDT

I get that energy adds mass to an object, I've heard that almost all of the mass of an Atom comes from the way Quarks are bound by the strong force, for example. What I don't understand, then, is how a photon can have no mass, given that it carries energy. Does mass only exist when there are multiple particles interacting?

submitted by /u/Ghodicu
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How do pain relievers reduce fever?

Posted: 21 Sep 2018 10:01 AM PDT

How do medicines like acetaminophen and ibuprofen reduce a fever? Also do they reduce a fever in the same way. I know that acetaminophen does not reduce inflammation so does it affect a fever differently?

submitted by /u/bjamesk4
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In common chimpanzee societies, how do infants/juveniles differ in terms of food access during development?

Posted: 21 Sep 2018 02:22 AM PDT

I'm probably making many assumptions that show a general lack of understanding of chimpanzee behavior, and I apologize for that. Hopefully someone will still try to provide an explanation and show errors in my thinking.

So my questions are:

Do most infants have access to a similar amount of food? Is there a ranking system that determines how much food different infants can get? Which factors lead to inequality in terms of nutrition, if that occurs at all?

submitted by /u/neumann345
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Friday, September 21, 2018

How come there is formation of two molecular orbitals when there is single interference of atomic orbitals in Molecular Orbital Theory?

How come there is formation of two molecular orbitals when there is single interference of atomic orbitals in Molecular Orbital Theory?


How come there is formation of two molecular orbitals when there is single interference of atomic orbitals in Molecular Orbital Theory?

Posted: 21 Sep 2018 01:39 AM PDT

Why do waves come in sets?

Posted: 20 Sep 2018 12:42 PM PDT

I was out diving today in heavy surf and got advice from the dive master to watch for a set of 3 big waves to come by before surfacing - evidently after 3 big ones, you'll get about 3 or 4 smaller ones, making it much easier to clamber back on to the ladder. I was a little doubtful, but it turned out to provide me the 30 second window I needed to have a substantially easier transition...

But it made me wonder: with the same wind pushing the water, why aren't all waves approximately the same size? Why do they come in sets of a few waves at a time, instead of hundreds, or instead of randomly variable waves?

Thanks!

submitted by /u/ProLicks
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Do elections orbit an atomic nucleus in a 2d disc similarly to celestial objects such as galaxies and planetary rings? Why/ why not? And what's the math behind it.

Posted: 20 Sep 2018 10:52 PM PDT

How do colligative properties change when talking about non-dilute solutions?

Posted: 21 Sep 2018 04:38 AM PDT

I'm curious at what point do the laws pertaining to boiling point, melting point, osmosis pressure and partial point pressure no longer apply to all solute/solvent combinations equally.

submitted by /u/Hoihe
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Can hydrofluric acid be used to quicken lens grinding?

Posted: 21 Sep 2018 03:03 AM PDT

If I have a non-random sequence, what should I append to it to make it look random? (explanation below)

Posted: 21 Sep 2018 02:49 AM PDT

There's a sequence of N characters, generated by a simple algorithm that was not designed to make its outputs look random. I can append a sequence of M arbitrary characters to it. My goal is to make the whole sequence of N+M symbols appear as random as possible.

I don't know what kind of statistical tests my adversary is going to use. But I know that he has no particular assumptions about what kind of algorithm could have produced the sequence (although, obviously, shorter algorithms are assumed to be more likely, as per Solomonoff's theory of inductive inference).

Should I just append M random symbols to it? Or should I try to "compensate" for the non-randomness of the initial sequence? For example, if the initial sequence has a shortage of zeros, should I add more zeros to my sequence to make up for it? Or would it just bring the apparent fidelity even further down?

I need the most general answer you can come up with, without any assumptions of the value of N, M, and the algorithm.

(I know this whole affair sounds fishy, but I'm not actually doing anything illegal or unethical)

submitted by /u/thetimujin
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In the concept of hybridization of atomic orbitals how come there is no hybridization which does not involve an "s" orbital?

Posted: 21 Sep 2018 01:33 AM PDT

During capillary action the average gravitational potential energy of the molecules increases. Where does that energy come from?

Posted: 20 Sep 2018 02:30 PM PDT

Is there a name or term for cellular organelles (like the mitochondria and chloroplast) that were likely derived from symbiotic cooperation between early unicellular organisms?

Posted: 20 Sep 2018 11:02 AM PDT

I'm making an index card based evolutionary tree of life for my son. Are there terms for these symbiotic cytoplasm dwellers with genetically distinct DNA from the cell in which they are housed?

Is there any consensus on whether these organelles were derived from viruses, bacteria, or archaea?

submitted by /u/likechoklit4choklit
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Will friction eventually stop a domino line?

Posted: 20 Sep 2018 03:35 PM PDT

When you knock over the first domino in a line you are essentially putting energy into that system. So since friction takes away energy and makes it unusable will a line of dominoes eventually stop when friction takes enough of the usable energy away, or will the line go on indefinitely?

submitted by /u/towel_monkey
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Jupiter is a massive gas giant and yet it has one of the strongest gravitational pulls. How can a planet made mostly of gas have such strong gravitational force?

Posted: 20 Sep 2018 10:50 PM PDT

How does supraconductivity work ?

Posted: 21 Sep 2018 04:19 AM PDT

Superconductivity*

submitted by /u/Whiskun
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The universe is so big! There must be so many chances for life! Why havent we found/heard from any alien species?

Posted: 20 Sep 2018 11:12 AM PDT

How does an electron move to a lower orbit?

Posted: 20 Sep 2018 11:02 AM PDT

What's the nature of the mechanisms involved in the process?

submitted by /u/Sitervain
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If Anti Hydrogen (Hydrogen made of antimatter) gives off the same exact spectrum as normal hydrogen, then how do we know that hydrogen we've seen in space is normal matter, not antimatter?

Posted: 20 Sep 2018 12:51 PM PDT

https://youtu.be/G2q221JGaK8 A source video about the spectrum

submitted by /u/GrooveMaster416
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Thursday, September 20, 2018

What makes recycling certain plastics hard/expensive?

What makes recycling certain plastics hard/expensive?


What makes recycling certain plastics hard/expensive?

Posted: 20 Sep 2018 04:13 AM PDT

Does a diamond melt in lava?

Posted: 19 Sep 2018 04:15 AM PDT

Trying to settle a dispute between two 6-year-olds

submitted by /u/actually_crazy_irl
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Do the physics governing stellar evolution allow a star to form and achieve Hydrostatic equilibrium in 2-Dimensional space?

Posted: 20 Sep 2018 06:46 AM PDT

What happened to all the anti-matter?

Posted: 20 Sep 2018 03:55 AM PDT

As per Physics...The amount of matter and antimatter produced or released after the big bang must be equal, then why is it so rare, and also how do scientists make it in the Large Haldron Collider?

Is it possible that there is a whole another anti-universe or something?Why does it release tremendous amounts of energy when it comes into contact with matter?

and one last thing...If anti-matter can give us tremendous amounts of energy, then matter also should be able to give the same tremendous amounts of energy when it contacts anti-matter in, say, an anti-matter planet or something, right? then that way if we find out a Place made out of anti-matter, then that'd be a great exchange for the aliens living there, and for us to give our normal matter and get some anti-matter, right?

Fuel for us, fuel for them and we weigh not based on the item, but based on the mass. Or is it that matter out of a Diamond would release more energy when contacted with anti-matter than a banana peel? Just Curious.

I hope all of it makes sense.

Edit: Now it might make a little more sense(Punctuation xD)

submitted by /u/IDKPhotoshop
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Why haven't we adopted and improved upon Nikola Tesla's designs for wireless charging and power?

Posted: 19 Sep 2018 06:26 PM PDT

Does the pilot-wave interpretation of quantum mechanics require an absolute reference frame that is incompatible with special relativity?

Posted: 19 Sep 2018 09:33 AM PDT

Hidden variables may not be impossible, but if they require a field that guides particles deterministically, shouldn't we be able to measure our movement through that field (the same way we should have been able to measure our movement through the luminiferous aether, if it existed)? Wouldn't that provide an absolute reference frame? I don't see how pilot wave theory can be made compatible with special relativity. Am I missing something?

submitted by /u/plugubius
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Why is colorblindness specific combinations of colors or a certain amount of colors?

Posted: 19 Sep 2018 09:54 PM PDT

Is it ever possible to have red/blue or any other combination not well known?

submitted by /u/im__rapture
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How does the wind carry sound?

Posted: 19 Sep 2018 07:26 PM PDT

Whats the most efficient way to use two different insulation materials with different r-values. Should the material with the higher r-value be used closer to the heat source?

Posted: 19 Sep 2018 11:32 AM PDT

When winter camping many people like to stack two sleeping pads on top of each other. Normally, these pads have different r-values, one is usually inflatable with a high r-value, the other is made from Closed Cell Foam and has a lower r-value.

Almost everyone agrees, the CCF sleeping pad should go below the inflatable. Other than protecting the inflatable from punctures, is there any science that explains why this way would be warmer?

submitted by /u/plethora-of-pinatas
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How do Islandic Spar crosshairs work?

Posted: 19 Sep 2018 11:41 PM PDT

I was wondering if anyone could tell.me how these islandic spar crosshairs that are described in the 'islandic alarm goes modern' section work. I have tried to replecate it but I feel that the classical blocks that are cut in a way that shows a nice double letter effect is not the right cut. Should it be cut allong a different axis?

https://petapixel.com/2013/12/12/iceland-spar-rock-discovered-optics/

submitted by /u/Synethos
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Can insects get cancer?

Posted: 19 Sep 2018 10:16 AM PDT

Just wondering.

submitted by /u/loafenwerk
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What causes melted glass to appear orange / red hot instead of appearing transparent?

Posted: 19 Sep 2018 08:30 PM PDT

Just a random thought that came to my mind when thinking about the differences between ice and glass. I understand at a basic level that glass is composed of combinations of sand, soda ash, calcium carbonate, iron, chromium, and or plastic depending on the kind of glass being made, and when super heated it becomes this red-hot liquid. But when I contrast this mentally with water, or even plastic, I can't seem to understand why a similarly clear solid wouldn't melt into a clear liquid as well? I just can't seem to wrap my head around this; Is it a simple matter of one or more of the ingredients trapping light so well it gives off this color? Is it the unique structure of glass? Is it just the natural by-product of all that heating process giving off light?

I appreciate any and all feedback in this, and bonus points for references and more reading material on this, as it's really caught my interest. Thanks!

submitted by /u/JZaber
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Why do protons not repel each other in the nucleus?

Posted: 19 Sep 2018 02:26 PM PDT

What are the currently accepted biochemical mechanisms believed to be responsible for Personality Disorders such as BPD?

Posted: 19 Sep 2018 09:24 PM PDT

How are we so sure that the Strong force only operates in small distances?

Posted: 19 Sep 2018 05:08 PM PDT

For example, we have the force of gravity and electromagnetic force. Even if we are maybe trillions of light years away from a source, you will still be never be 0, however infinitely close. But all I've ever heard was: "The strong force does not act on large distances" and I've been confused with that because for gravity and electricity, it still does at large and small distances.

Does the strong force not obey the inverse square law?

Is it some higher power than 2 so it diminishes quicker and we just just ignore it at a certain point?

Do we not have a precise enough formula or understanding of the nature of the strong force so we just simplify it to "Just ignore it after this radius"? [Kind of like how we kind of ignore quantum mechanics after a certain distance(Planck) because our math does work out]

Thank you!

submitted by /u/DiamondsareMine
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The Flu vaccine has been available as a nasal mist for some time now, but what’s stopping other vaccines from becoming available via this method?

Posted: 19 Sep 2018 12:52 PM PDT

A friend of mine has a severe needle phobia and has for most of their life opted to get the nasal form of their yearly flu shot for this reason. And in discussing this we found ourselves wondering why this option wasn't available for other illnesses preventable by vaccination. Is it perhaps an issue of cost? Difficulty of adapting the formula? Reduced retention of immunity? Or perhaps some other factor or a combination of factors?

submitted by /u/Lostsonofpluto
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Is it possible for cosmic rays to merge protons, neutrons, deuterons or alpha particles with neptunium and plutonium nuclei and create currently synthetic elements?

Posted: 19 Sep 2018 05:04 PM PDT

Those elements could be americium (neptunium plus a deuteron or plutonium plus a proton/neutron), curium (plutonium plus a deuteron), berkelium (neptunium plus an alpha particle) and californium (plutonium plus an alpha particle). The reason neutrons, deuterons and alpha particles could work is because that giant amount of acceleration would cause the neutrons to split up on contact with the nucleus.

submitted by /u/xXx_LI_xXx
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If a object is thousands of light years away from earth, how are we estimating the size and distance?

Posted: 19 Sep 2018 10:17 AM PDT

How do continental divides impact river basins?

Posted: 19 Sep 2018 07:43 PM PDT

If one were to get pregnant with an IUD inserted, what are the chances that the pregnancy would go full term? How high risk would it be? Could the IUD be taken out after learning you are pregnant?

Posted: 19 Sep 2018 01:18 PM PDT

If boron atoms have 5 electron holes, why does hydrogenating it make BH₃ instead of BH₅?

Posted: 19 Sep 2018 11:51 AM PDT

The Greenland Sharks live for over 300 years. How is that calculated?

Posted: 19 Sep 2018 09:54 AM PDT

I'm sure they weren't tagged hundreds of years ago to monitor now. So, how do we know that have a lifespan of 300-500 years?

submitted by /u/obsidian3339
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What specifically makes a rubber band lose its elasticity? Does it have to do with the number of times it's been stretched or the amount of time spent that way?

Posted: 19 Sep 2018 06:59 AM PDT