I work with identical 4 year old twins - one has severe autism, the other is normally developing. How does this fit into the whole nature/ nurture debate?

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• I work with identical 4 year old twins - one has severe autism, the other is normally developing. How does this fit into the whole nature/ nurture debate?
• Does depression have common stages, which are recognizable through majority of patients? If so what would these be?
• Can Someone Explain This Please? (Slight NSFW)
• Is PV = NkT an emergent property?
• When you "get smarter", what actually happens in your brain? Do your neurons make more or more efficient connections? Is there a way to manipulate said growth to emulate the acquisition of knowledge?
• What exactly is the benefit from a polyphasic sleep schedule?
• It is said that human brains don't finish development until around age 25. When do dog's brains finish developing?
• What is smallest object with the most mass?
• What would happen if my friend (Russian) and his wife (French) spoke to their newborn only in their own language. Would the child learn both languages simultaneously?
• Are there any molecules that are connected mechanically? (like two links in a chain)
• How do materials like fabric retain scent from being exposed to smoke? Which retain scents longer, skin or clothing?
• What is the neurological description of determination and will? Why is it that some are more focused/determined than others?
• Is it possible to conceive a baby with cancer?
• What changes in someone's brain when they become a hoarder?
• What causes plumes of smoke from a large explosion to appear to hit a ceiling and spread out flat instead of continue upwards?
• Have diseases ever crossed the species barrier between plants and animals?
• [Psychology] What's the science of obsession? Questions below
• How do astronomers account for the mass from dark matter when calculating the mass of a star/planet?
• Do airplanes and helicopters fly better when the air's humidity is higher?
• How does the brain's internal clock work?
• Geologists/Earth Scientists: Will all the current land on earth eventually be "refreshed" via subduction?

I work with identical 4 year old twins - one has severe autism, the other is normally developing. How does this fit into the whole nature/ nurture debate? Posted: 05 Dec 2015 08:15 AM PST submitted by purplepricklypear [link] [657 comments]

Does depression have common stages, which are recognizable through majority of patients? If so what would these be? Posted: 05 Dec 2015 08:07 AM PST Hello, people of AskScience. This question was on my mind and you find a lot blog/articles about this, but I wanted someone with scientific background to give me an answer. Thank you either way. submitted by Person995 [link] [58 comments]

Can Someone Explain This Please? (Slight NSFW) Posted: 05 Dec 2015 11:56 PM PST Saw an image similar to this on the front page of r/wtf and would like to know what's going on exactly. http://imgur.com/byhef7m In detail or without :) Cheers submitted by Jalaliozz128 [link] [5 comments]

Is PV = NkT an emergent property? Posted: 06 Dec 2015 03:10 AM PST I was reading up on emergent properties in biology, and it seems to me that some things in physics are of similar origin. The typical example is that you can't predict the behavior of the oceans from a single water molecule; doesn't the ideal gas law follow a similar line of reasoning? One would never derive the ideal gas law from a single molecule itself, only when looking at a large system of them. I was thinking if this was an emergent property, what other emergent properties are there in Physics? And moreover, have there been any significant papers written about simulations of weak emergent properties? submitted by LaziestManAlive [link] [1 comment]

When you "get smarter", what actually happens in your brain? Do your neurons make more or more efficient connections? Is there a way to manipulate said growth to emulate the acquisition of knowledge? Posted: 05 Dec 2015 07:26 PM PST submitted by Yukabaceran [link] [3 comments]

What exactly is the benefit from a polyphasic sleep schedule? Posted: 05 Dec 2015 09:48 PM PST So my friend is interested in changing her sleep schedule to a polyphasic one. I just don't understand how that is healthy. What does having that kind of schedule do to the body and how can it be beneficial/harmful? submitted by bigjeskid [link] [5 comments]

It is said that human brains don't finish development until around age 25. When do dog's brains finish developing? Posted: 05 Dec 2015 07:35 PM PST I labelled this as neuroscience, but it also clearly falls into animal science which I didn't see a category for. submitted by SoCal_SUCKS [link] [3 comments]

What is smallest object with the most mass? Posted: 05 Dec 2015 08:16 PM PST In the universe, as well as on Earth? submitted by aRayes [link] [10 comments]

What would happen if my friend (Russian) and his wife (French) spoke to their newborn only in their own language. Would the child learn both languages simultaneously? Posted: 05 Dec 2015 08:44 PM PST submitted by whotookparf [link] [8 comments]

Are there any molecules that are connected mechanically? (like two links in a chain) Posted: 05 Dec 2015 05:21 PM PST If so, do these have any special properties? Can they be used to create nano-scale machines? submitted by Artillect [link] [5 comments]

How do materials like fabric retain scent from being exposed to smoke? Which retain scents longer, skin or clothing? Posted: 05 Dec 2015 01:39 PM PST I know cigarette smoke tends to stick around for a while. Another question, why do cigarettes tend to stick around longer on clothing / skin versus other scents like vapor or candles? submitted by Paratix [link] [3 comments]

What is the neurological description of determination and will? Why is it that some are more focused/determined than others? Posted: 05 Dec 2015 01:18 PM PST submitted by THamid95 [link] [2 comments]

Is it possible to conceive a baby with cancer? Posted: 05 Dec 2015 10:23 AM PST If either the man or the woman has cancer in his testicles/her ovary, is it possible to conceive a baby that has cancer from the very beginning? submitted by ValdemarSt [link] [13 comments]

What changes in someone's brain when they become a hoarder? Posted: 05 Dec 2015 06:10 AM PST Or what differences do they have from a normal person's brain, if hoarding is something innate? Also, are there any parallels between the brain/personality of a hoarder and other disorders such as alcoholism, drug abuse, addictions, violence etc? Thank you. submitted by TheSneakyTruth [link] [6 comments]

What causes plumes of smoke from a large explosion to appear to hit a ceiling and spread out flat instead of continue upwards? Posted: 05 Dec 2015 04:27 PM PST As seen in the Etna volcanic eruption https://i.imgur.com/1g3JslE.jpg submitted by zachismyname89 [link] [4 comments]

Have diseases ever crossed the species barrier between plants and animals? Posted: 05 Dec 2015 08:27 AM PST submitted by QueuedeSpool [link] [13 comments]

[Psychology] What's the science of obsession? Questions below Posted: 05 Dec 2015 07:49 PM PST What's the clinical definition? What officially qualifies as obsession? How does it develops? How/if does it differ from addiction? What's the best way to treat it? Thank you for the responses! submitted by blakester731 [link] [comment]

How do astronomers account for the mass from dark matter when calculating the mass of a star/planet? Posted: 05 Dec 2015 09:06 AM PST From what I understand a common way of estimating a star/planet's mass is to observe is gravitational effects on other objects around it. How do astronomers distinguish this effect between the object being observed, and the gravitational effects from dark matter? submitted by dododante [link] [16 comments]

Do airplanes and helicopters fly better when the air's humidity is higher? Posted: 05 Dec 2015 11:16 AM PST submitted by Sylvester_Scott [link] [2 comments]

How does the brain's internal clock work? Posted: 05 Dec 2015 11:34 AM PST I used to wake up everyday at 7:11 just before my 7:15 alarm. It was such a better feeling than waking up to the sound of a bomb about to go off. But I always wondered why I would always wake up at that same time. And why now I don't have that same internal clock? The main difference is my sleep schedule is completely random now (11pm-3am I would say) vs my past (10:30pm - 12am) submitted by JollyGarcia [link] [4 comments]

Geologists/Earth Scientists: Will all the current land on earth eventually be "refreshed" via subduction? Posted: 05 Dec 2015 08:03 AM PST I understand that we are talking about geologic time here, a long long time. The heart of my question is a wondering whether the current surface of the earth, on which every mountain, river, and of course human-built structure stands, will one day be pulled under the earth via subduction, buried under miles of rock, and eventually melted. Will there be new land created via volcano, etc., which eventually cools, and is covered in sediment, and on which new life eventually grows? I'm assuming that human life on probably earth will end in the near future, in geologic time terms. So there will be no one to alter the earth in any way, build permanent structures, etc. I'm just curious whether the current landscape, including everything human-built, will eventually disappear. Not just buried, but eventually melted into molten rock and all traces of it gone forever. I have entirely separate questions related to this, but they're not geologic in nature, but rather more life science/evolution, so I'll refrain from asking them here. submitted by MathFlunkie [link] [7 comments]

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How is gender (not sex) biologically structured? Why does gender dysphoria exist?

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• How is gender (not sex) biologically structured? Why does gender dysphoria exist?
• What is the swartszchild radius of a neutron?
• In which situations is the VECTOR of angular momentum conserved, and not just the overall magnitude?
• How would a planet having two suns affect the temperature? Could a planet with two sons be habitable by humans?
• Do matter and antimatter collisions break the rule of law of conservation of mass?
• How come when ice is in my cup, and i rotate the cup, it stays in the same position?
• I eat some of the hottest hot sauces and extracts in the world. Why does my mouth build a tolerance but my stomach doesn't? And why does it hurt more than the stringer acid in my stomach?
• What is the vacuum?
• How does a photon move?
• What do we know about the microbiome of other animals? Do plants have microbiomes?
• When you're sick why do you feel hot and cold at the same time?
• What about a volcanic eruption makes lightening occur?
• If motion is relative, why is it (theoretically) possible for one massive object to move in 0.5c in one direction and for another to move at the same speed in the opposite direction?
• What are the differences in screens that allow me to see my Gameboy Color in direct sunlight but when my laptop is I can't see anything?
• From a photon's frame of reference, are the instances of its generation and its absorption instantaneously one and the same?
• What would be the consequences of growing crystal in different gravitational influence?
• Can animals in the wild get PTSD?
• If 0^0 is one, and 0^(x>0) is zero, can we define the Dirac-Delta function as simply 0^|x|?
• Is consciousness dependent on memory?
• If heat and sound are both vibrations of molecules, what's the thing separating them?
• Do we observe each other as objects or subjects?

How is gender (not sex) biologically structured? Why does gender dysphoria exist? Posted: 04 Dec 2015 09:31 PM PST submitted by MANinnaVAN [link] [149 comments]

What is the swartszchild radius of a neutron? Posted: 04 Dec 2015 11:47 PM PST If you scrunched the mass of Earth to about 1 inch you'd have a black hole. Wolfram Alpha tells me that the swartszchild radius of a neutron is about 2.5 * 10-15 meters. Wikipedia tells me that the radius of an atomic nucleus is about .875 * 10−15 meters, but doesn't give me a radius for a neutron itself. Can a single neutron be compressed to become a black hole? If not, what is the smallest chunk of matter which can be squashed to become a black hole? submitted by driveways [link] [6 comments]

In which situations is the VECTOR of angular momentum conserved, and not just the overall magnitude? Posted: 05 Dec 2015 12:01 AM PST A famous experiment shown to students in intro courses to physics involves a person standing on rotating platform holding a rapidly spinning bicycle wheel. The wheel is first parallel with the surface of the platform. The person then turns the wheel over by 180 degrees. The conservation of momentum then causes the entire platform to begin to spin in the same (original) rotational direction of the bike wheel. The explanation for this phenomena is explained as a conservation of the VECTOR of angular momentum -- and not just say the conservation of angular momentum as a scalar quantity or "absolute magnitude". This is the common explanation for why the platform rotates with the original wheel's direction, instead of contrary to it. http://i.imgur.com/QPWvquV.png But is the VECTOR of the angular momentum always conserved? Are there situations in which the overall 'scalar' angular momentum is conserved, but not the VECTOR? To answer these questions, consider the following experiments. Clockwise wheel makes another wheel spin clockwise. Imagine a wheel is spinning clockwise with an angular velocity of 10.0 rad/sec. The wheel has a mass of 1.13 kg and a radius of 0.33 meters. The moment of inertia of the wheel is 0.123. In this initial configuration, the magnitude of the angular momentum is L = I*(w_o) Because the wheel is spinning clockwise, the VECTOR of the angular momentum is L0 = <0 , 0 , I*w_o > Into the "blackboard" as it were. A second wheel, wheel B, of the same mass is brought near the first wheel, wheel A. In the initial config wheelB is not spinning at all, and has an angular velocity of 0.0. The two wheels are brought together as shown in the figure, and allowed to rotate together as a single object of mass (M_A + M_B). The two wheels are later taken apart. As we can see, they are both rotating clockwise, and therefor their VECTORS of angular momentum are both "into the chalkboard". http://i.imgur.com/2FG8FKW.png We could add L_B and L_A and see that their vector sum is equal to L0. L_B + L_A = L0 Thus angular momentum is conserved and all is right in the universe. Clockwise wheel makes another wheel spin counter-clockwise. We start with the same condition as before, with a spinning wheel A, and a stationary wheel B. But this time they are besides each other and their edges are gently brought together. Like two gears, their treads collide and they spin in opposite directions. After this goes on for a while, the wheels are separated. http://i.imgur.com/JfRDX6i.png This is the final configuration of the system, L_A = <0 , 0 , I*w_A > "into the chalkboard" L_B = <0 , 0 , -I*w_B > "out of the chalkboard" Although the angular momentums are shorter than the original L0 by magnitude, they are now pointing in opposite directions. If we try to add them, they cancel out! Something is amiss. L0 =?? (I * w_A) - (I * w_B ) At this point, you may cry out that, "It is the sheer magnitudes of the angular momentums that are conserved, not their directions." But if that were true, how could you ever explain the phenomenon at the opening of this article? Why does the platform begin to spin underfoot in the same direction of the original rotation of the bike wheel? http://i.imgur.com/QPWvquV.png submitted by moschles [link] [3 comments]

How would a planet having two suns affect the temperature? Could a planet with two sons be habitable by humans? Posted: 04 Dec 2015 08:19 AM PST There are planets with two suns, like those in the Kepler-47 system, and how does that affect the overall temperature of a planet. An info graphic I saw listed the "habitable zones" of Kepler-47, what does that mean? (Bonus question : what would that look like sky wise? Would that look similar to Tatooine in Star Wars? Or would be different?) submitted by Yesters [link] [30 comments]

Do matter and antimatter collisions break the rule of law of conservation of mass? Posted: 05 Dec 2015 12:05 AM PST My understanding is that when matter and antimatter collide, they annihilate each other. Does this mean that the matter is completely removed from existence or is it transformed like how it's defined in the law of conservation? submitted by Readysetfire1 [link] [10 comments]

How come when ice is in my cup, and i rotate the cup, it stays in the same position? Posted: 05 Dec 2015 05:22 AM PST This isn't really a joke post, ive always wondered and its so annoying when the ice is in the back of the cup, you have to put the cup down and walk around it OR put your finger in the cup, which isn't that nice. submitted by GoodLUF [link] [3 comments]

I eat some of the hottest hot sauces and extracts in the world. Why does my mouth build a tolerance but my stomach doesn't? And why does it hurt more than the stringer acid in my stomach? Posted: 04 Dec 2015 08:43 AM PST submitted by perezidentt [link] [37 comments]

What is the vacuum? Posted: 04 Dec 2015 11:25 PM PST I'm a 3rd year physics major at university and I've studied some intro quantum mechanics and played with the harmonic oscillator and learned that even the ground state has some energy that we call vacuum energy.. What does that mean? I'm just kinda getting confused with what the vacuum actually is and a way to visually conceptualize the vacuum with the notion that space itself is constantly expanding because of inflation. Any insight would be greatly appreciated submitted by PetaPetaa [link] [5 comments]

How does a photon move? Posted: 04 Dec 2015 09:07 AM PST submitted by stephenkingkong [link] [46 comments]

What do we know about the microbiome of other animals? Do plants have microbiomes? Posted: 04 Dec 2015 11:56 AM PST It seems like I see a new article every week about the human microbiome, and its connection to some disease process or another. What research exists regarding the microbiome in other organisms? I can only assume that industrial scale use of antibiotics has caused some disruptions to the gut flora of livestock animals. Do they ever get probiotics to keep their microbiome healthy? Do plants have a microbiome? There are well-known symbiotic relationships with plants and fungi; what about plant bacteria? Sorry for the open-ended question, I was just musing on the subject. submitted by Petit_Hibou [link] [2 comments]

When you're sick why do you feel hot and cold at the same time? Posted: 04 Dec 2015 10:52 AM PST submitted by Kanekikei [link] [6 comments]

What about a volcanic eruption makes lightening occur? Posted: 04 Dec 2015 11:50 AM PST Mount Etna's eruption has me curious. submitted by Robotshavenohearts [link] [7 comments]

If motion is relative, why is it (theoretically) possible for one massive object to move in 0.5c in one direction and for another to move at the same speed in the opposite direction? Posted: 04 Dec 2015 10:06 AM PST Title. submitted by Popopopper123 [link] [11 comments]

What are the differences in screens that allow me to see my Gameboy Color in direct sunlight but when my laptop is I can't see anything? Posted: 04 Dec 2015 09:55 AM PST submitted by DigitalCannon [link] [7 comments]

From a photon's frame of reference, are the instances of its generation and its absorption instantaneously one and the same? Posted: 04 Dec 2015 08:05 AM PST Since time dilation reaches a limit at the speed of light, at which photons travel, does that mean that from a newly generated photon's point of view, the moment it's released from an energetic reaction and the moment it "hits something" happen at the same time? And, as a related question, since space compresses in the direction of motion near light speed, also bearing a limit at light speed, does that mean from the photon's point of view, space is so compressed between its origin point and its absorption point that no distance is actually traversed? submitted by EuclideanPsychosis [link] [29 comments]

What would be the consequences of growing crystal in different gravitational influence? Posted: 04 Dec 2015 07:29 AM PST On a purity level, I guess the crystals would be perfect with a pure germ in zero g, but wouldn't the bonds be weaker, or the opposite when a crystal would grow in a high gravity environement? submitted by Apotatos [link] [5 comments]

Can animals in the wild get PTSD? Posted: 04 Dec 2015 05:43 PM PST submitted by RetroViral [link] [5 comments]

If 0^0 is one, and 0^(x>0) is zero, can we define the Dirac-Delta function as simply 0^|x|? Posted: 04 Dec 2015 08:08 PM PST I mean the (EDIT: I meant the Kronecker-Delta) function is always defined with crazy distributions and sums/limits that are too complicated for me; couldn't we just say δ(x) = 0|x| to make it nice and easy? Or is there a good reason we don't do that? Thanks submitted by tornato7 [link] [14 comments]

Is consciousness dependent on memory? Posted: 04 Dec 2015 03:22 PM PST submitted by EyeOfSol [link] [3 comments]

If heat and sound are both vibrations of molecules, what's the thing separating them? Posted: 04 Dec 2015 02:45 AM PST I remember reading in physics textbooks over and over that heat is vibration of particles, and so is sound. So, what's the threshold? What decides where heat ends and sound begins? submitted by hameerabbasi [link] [9 comments]

Do we observe each other as objects or subjects? Posted: 04 Dec 2015 06:20 AM PST I recently read about objectifying someone and how it's automatically a bad thing, but isn't that how we see other people in everyday life? We obviously know when thinking about it that other people have a consciousness and feelings but do we really take that into consideration when interacting with other people? submitted by Fletius [link] [1 comment]

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Do Aquatic Animals Yawn?

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• Do Aquatic Animals Yawn?
• Do people who are hypersensitive to, say, sound or touch actually have more acute senses, or are they just more easily upset by them?
• Completely disregarding how impractible and dangerous it would be, if we really tried, how fast could we make a spacecraft fly? Could we reach a meaningful percentage of the speed of light?
• If temperature trends show ~.1C/decade warming, won't we run out of fossil fuels before reaching 2C warming?
• Why is it that the moons gravity is able to direct masses of water in different directions but yet we, ourselves cannot physically feel the affect of the moon's gravity?
• If a force is applied to the top of a ruler in space, does it spin in place or move forward?
• why do seemingly perfect spherical bubbles form in water / liquid?
• Why does gravity cause all objects (regardless of mass) to accelerate equally?
• If we can ever model many-body quantum systems on a quantum computer, is it possible that we may learn more about where the outcome of a measurement comes from?
• When I have a straw in a glass of liquid, hold the top of the straw, then lift the straw out of the glass while still closing the top, why does the liquid stay in the straw until I let go of the top?
• Do annual bonuses increase employee performance?
• Is it possible that an elephant stepped on my foot without breaking it?
• Would isotopes of antimatter atom be the exact same or opposite of regular isotopes?
• Has VY Canis Majoris become a BlackHole "in earth time"? Would this be the closest BlackHole to earth?
• Why are Gravitons considered to have infinite range?
• Are the fundamental charges in the universe arbitrarily labelled?
• Why does integration not work when trying to find the formula of third power polynomials?
• Does high pH water have a lower capacity as a solvent to dissolve more because of the electrolytes and minerals already in the water?
• What would be a viable lubricant to -85F?
• Can somebody explain to me the Dirac sea?

Do Aquatic Animals Yawn? Posted: 03 Dec 2015 10:54 AM PST submitted by Atreides27 [link] [304 comments]

Do people who are hypersensitive to, say, sound or touch actually have more acute senses, or are they just more easily upset by them? Posted: 03 Dec 2015 02:08 PM PST submitted by omegasavant [link] [15 comments]

Completely disregarding how impractible and dangerous it would be, if we really tried, how fast could we make a spacecraft fly? Could we reach a meaningful percentage of the speed of light? Posted: 04 Dec 2015 04:04 AM PST submitted by baubeauftragter [link] [9 comments]

If temperature trends show ~.1C/decade warming, won't we run out of fossil fuels before reaching 2C warming? Posted: 03 Dec 2015 11:14 AM PST I am looking at temperature trends for different data sets RSS/UAH show about .12C/decade warming and GISS/HADCRUT smaller rates. That means it will take 150-200 years before we reach the 2C mark. Is rate expected to increase? Has it increased? What am I missing here? submitted by 9sprog [link] [19 comments]

Why is it that the moons gravity is able to direct masses of water in different directions but yet we, ourselves cannot physically feel the affect of the moon's gravity? Posted: 04 Dec 2015 05:37 AM PST ^ submitted by MediocrePlayer [link] [4 comments]

If a force is applied to the top of a ruler in space, does it spin in place or move forward? Posted: 03 Dec 2015 10:29 PM PST Lets say that an irresponsible astronaut left a ruler floating in space. If a force was to act on the tip of the ruler, perpendicular to the ruler's lengthwise configuration as to make it spin (adding torque), would it spin in place or spin while moving forward? It would also initially spin on it's center of gravity (the middle) and not act like a lever where the opposite tip stayed stationary (like a door), correct? I assume the same situations would apply to balls in space. submitted by MYSTIC_CHODE_GLUE [link] [3 comments]

why do seemingly perfect spherical bubbles form in water / liquid? Posted: 03 Dec 2015 10:12 PM PST á la foam submitted by Captainjack132 [link] [6 comments]

Why does gravity cause all objects (regardless of mass) to accelerate equally? Posted: 03 Dec 2015 10:15 AM PST I know this sounds dumb and its quite obvious that objects with different masses accelerate due to gravity at the same rate, but why? I would expect gravity to exert a fixed amount force on objects. I might be applying the equation wrong, but if Force = Mass x Acceleration, then each object experiences a different amount of force as they have different masses but equal acceleration. submitted by palmerito0 [link] [34 comments]

If we can ever model many-body quantum systems on a quantum computer, is it possible that we may learn more about where the outcome of a measurement comes from? Posted: 03 Dec 2015 11:28 AM PST I have been reading about decoherence, the hidden measurements interpretation of quantum mechanics, and many-body problems, and I was wondering the following: If we do not yet possess the ability, because of computational limits (I assume), to model many-body quantum systems, is there anything in quantum mechanics to suggest that if we could model those systems, that we may learn something about what happens during a measurement? I understand that quantum mechanics and classical mechanics are both deterministic, but that the transition between the two during decoherence is probabilistic, and I am wondering if we can ever 'improve' on what outcomes we can expect in a given scenario. For instance if you could model a double slit experiment and then run the exact same experiment, would the model have better predictive powers than we currently do? I am not talking about bypassing the Heisenberg Uncertainty Principle or making perfect predictions about the outcome of a measurement, I am just wondering if we might ever be able to gain better predictive powers, for instance whether an electron will be spin up or down, if we can accurately model the system and the environment together during the measurement process. Or, is there something in quantum mechanics that says even with all of that information we would be no better off, or that trying to model complex/macroscopic systems in quantum mechanical terms would lead to less accurate results (particularly the longer the system evolves)? Please note that I don't think that this is about a hidden-variable theory either, which I understand to be saying that our knowledge of quantum mechanics itself is incomplete - I am only wondering whether if we could calculate more of the information that we possess about the process, should that tell us anything new/different? submitted by Phynaes [link] [21 comments]

When I have a straw in a glass of liquid, hold the top of the straw, then lift the straw out of the glass while still closing the top, why does the liquid stay in the straw until I let go of the top? Posted: 03 Dec 2015 09:34 PM PST Did I create a vacuum? submitted by tyrfreja [link] [10 comments]

Do annual bonuses increase employee performance? Posted: 03 Dec 2015 01:38 PM PST I've read that "pay for performance" can worsen intrinsic motivation and creativity, but it can also improve a company's financial performance. Research papers on this topic rapidly go beyond my layperson understanding of the topic, with lots of apparently contradictory results. So to the best knowledge of science, what's the overall effect of an annual bonus on employee performance? Are there cases clear cases where it is or is not beneficial? submitted by TaviRider [link] [4 comments]

Is it possible that an elephant stepped on my foot without breaking it? Posted: 03 Dec 2015 10:52 AM PST When I was around 8 years old, I went to India. I was at an area where we saw an elephant and was able to ride it. Before being placed on top of the elephant, I remember my foot getting stuck underneath the elephant's front leg. There was some pain but I was able to get my foot out. I didn't tell anyone at the same and when I told my dad a few years later, he said it was impossible since my foot would have been broken. Is my recollection of the event possible/plausible? Or would my foot have been broken if the elephant stepped on it? submitted by GGLSpidermonkey [link] [13 comments]

Would isotopes of antimatter atom be the exact same or opposite of regular isotopes? Posted: 03 Dec 2015 11:28 AM PST I.e. would anti-deuterium have an extra antineutron or an extra antiproton? submitted by BusinessPenguin [link] [16 comments]

Has VY Canis Majoris become a BlackHole "in earth time"? Would this be the closest BlackHole to earth? Posted: 03 Dec 2015 11:20 AM PST submitted by My-Finger-Stinks [link] [3 comments]

Why are Gravitons considered to have infinite range? Posted: 03 Dec 2015 09:48 PM PST I've been looking up articles on subatomic particles and on gravity and I'm confused why gravitational force is considered to have infinite range seeing how gravitation force is dependent on the mass of two objects. submitted by GimmeKat [link] [3 comments]

Are the fundamental charges in the universe arbitrarily labelled? Posted: 04 Dec 2015 06:27 AM PST Does this question make any sense? I guess it stems from my pondering why electrons are negative. I had always assumed as a kid that the electrical charge flying round a nucleus would be positive. Were the choices to label charges as positive and negative just a choice on a graph of up or down or is there a naming convention and reason that makes something positive or negative? Obviously opposites repel each other but does it matter whether they are negative or positively labelled? Would a mirror universe where every charge is opposite work the same way? submitted by CoachHouseStudio [link] [2 comments]

Why does integration not work when trying to find the formula of third power polynomials? Posted: 03 Dec 2015 10:36 PM PST If I give 4 points from a quadratic (3 if you know it is a quadratic), my friend told me that you can use integration as opposed to simultaneous equations to find the original formula. I have not seen proof but i have done examples of my own and seen some and they all work, and the method makes sense. Say the points I give are: (1,9)(2,18)(3,31)(4,48) We take the differences of the y values until they are the same, just like how I was taught to find the order of the polynomial. 1 2 3 4 (X values) 9 18 31 48 (y values) 9 13 17 4 4 Now if i were to graph the last line, its formula would be y=4. If I integrate that, I get the slope for the original formula. y=4x + C. If we substitute several values in (This part seems sketchy to me, using values such as (1.5,9)(2.5,13) etc) we see that C = 3. So the formula is y=4x+3. 1 2 3 4 9 18 31 48 9 13 17 y=4x+3 4 4 y=4 Now if we integrate that once more, we get y=2x2 + 3x + C. Once again, substitute values in and we get C=4, yielding the equation y=2x2 + 3x + 4, the original formula of the points. However, it does not work with cubic functions. Of the cubic y=x4 , we can get points (1,1)(2,8)(3,27)(4,64). Assume we are given that it is a cubic. 1 2 3 4 1 8 27 64 7 19 37 12 18 6 Integrating through I get y=6x, y=3x2 + C...solve for C...and I hit a discrepancy. I think this might be something to do with the lack of symmetry or the sketchy taking of 1.5 values, but I haven't been able to find a reason as to why it happens. Google has failed me, I cannot find where my friend got this from. Your thoughts? EDIT: Formatting submitted by Coded_Binary [link] [2 comments]

Does high pH water have a lower capacity as a solvent to dissolve more because of the electrolytes and minerals already in the water? Posted: 03 Dec 2015 11:26 AM PST Just a random question. I have some water with a pH of 8.8 and had the thought of using to make things like powdered gatorade, coffee, tea, etc. submitted by DownvoteCommaSplices [link] [4 comments]

What would be a viable lubricant to -85F? Posted: 03 Dec 2015 09:49 PM PST There is a viral video for a gun lubricant, Liberty Lube, that claims it functions to -85F. The video demonstrates it squeezing from the dispenser after freezing in dry ice, while synthetic motor oils and other lubricants are solid. What could this possibly be made of? submitted by Mooseghanistan [link] [5 comments]

Can somebody explain to me the Dirac sea? Posted: 03 Dec 2015 08:48 AM PST I understand some of it, but I still am confused about some big pieces that my quantum physics book did not go into detail on. One of my most burning questions is how a hole in the sea can actually manifest as an anti-particle. Also, if it disagrees with gravity (as I've been lead to believe) then why do we not try to find a better theory? What is our modern interpretation of this theory? submitted by goodguys9 [link] [5 comments]

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