[astronomy] Do the planets cause a tidal effect on the sun the same way the moon does to earth?

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• [astronomy] Do the planets cause a tidal effect on the sun the same way the moon does to earth?
• Certain radiation can be blocked with different thicknesses of matter; is there an equivalent that can be used to block a magnetic field?
• if the earths core is molten, how does it generate a magnetic field around the earth. Aren't temperatures high enough to make metal molten enough to prevent it from being magnetic. What am I missing? I'm an Artist not a scientist.
• What career choice makes the highest percentage of people happiest?
• [physics] If the earth wasn't spinning would we feel the gravity more because of the lack of centrifugal forces?
• How do scientists do really thin slices?
• How the band theory can explain the electron mobility that, for example, through a electric potential difference can generate electric current?
• They say that all blue eyed humans have a common ancestor 7-10 thousand years ago. What about blue eyed dogs, horses or other animals? Is the mutation similar in all species? What would cause such a similar mutation among such varied species?
• In a scenario where human life is exposed to long term (millions of years) reduction of oxygen (like in mountain tops), would the human body adapt do this change?
• Did lemons and oranges evolve from the same source? what about grapefruits and other citrus? did this parent plant have a name?
• If organic compounds are the most important for creating and sustaining life, why do we still continue to classify water as inorganic?
• Why can a single individual react so differently to drugs in the same family (i.e. Xanax vs Ativan, both benzodiazepines)? And why do different individuals experience just as much variance between drugs, but not the same experiences on the same drugs as other individuals?
• Why is isopropyl alcohol considered toxic/dangerous, but ethanol is not, despite similar ld50 values?
• Does sound travel extremely well through a neutron star?
• At extreme temperatures, do photons behave differently?
• Is true wireless charging possible?
• Do people retain information better depending on the color of light source they're under?
• Is it possible to figure out the stage of Fall a region is in by doing a spectral analysis from a satellite?
• Can something be 1.5 plank lengths long?
• Can the blue land crab (cardisoma guanhumi) breathe underwater?

[astronomy] Do the planets cause a tidal effect on the sun the same way the moon does to earth? Posted: 08 Sep 2016 11:32 AM PDT submitted by /u/BlackSheepWolfPack [link] [comments]

Certain radiation can be blocked with different thicknesses of matter; is there an equivalent that can be used to block a magnetic field? Posted: 08 Sep 2016 03:32 PM PDT submitted by /u/SteakPizza [link] [comments]

if the earths core is molten, how does it generate a magnetic field around the earth. Aren't temperatures high enough to make metal molten enough to prevent it from being magnetic. What am I missing? I'm an Artist not a scientist. Posted: 08 Sep 2016 10:50 AM PDT submitted by /u/cxbu [link] [comments]

What career choice makes the highest percentage of people happiest? Posted: 08 Sep 2016 06:17 PM PDT submitted by /u/danbronson [link] [comments]

[physics] If the earth wasn't spinning would we feel the gravity more because of the lack of centrifugal forces? Posted: 09 Sep 2016 06:43 AM PDT submitted by /u/Hasimo74 [link] [comments]

How do scientists do really thin slices? Posted: 09 Sep 2016 06:05 AM PDT I'm impressed by cooks on TV that cut really fine slices of carrots or something. But when you think about it, scientists do much finer cuts than that, although I'm sure you don't use a kitchen knife. So for example in biology, you put something on a glass that you can look at in a microscope... But how do you get it there without it breaking apart? What do you use for cutting? How do you know how thick/thin to cut? Do you have to like freeze it first or process it somehow to get it there? submitted by /u/Arctic_Turtle [link] [comments]

How the band theory can explain the electron mobility that, for example, through a electric potential difference can generate electric current? Posted: 09 Sep 2016 07:13 AM PDT Yes, I have searched on Google, but I am too dumb to understand, so I thought if someone here could help me. submitted by /u/Kachi1_1 [link] [comments]

They say that all blue eyed humans have a common ancestor 7-10 thousand years ago. What about blue eyed dogs, horses or other animals? Is the mutation similar in all species? What would cause such a similar mutation among such varied species? Posted: 08 Sep 2016 09:49 PM PDT Looking at my blue eyed dog and wondering. submitted by /u/Mamadog5 [link] [comments]

In a scenario where human life is exposed to long term (millions of years) reduction of oxygen (like in mountain tops), would the human body adapt do this change? Posted: 08 Sep 2016 06:45 PM PDT submitted by /u/UnbalancedBastard [link] [comments]

Did lemons and oranges evolve from the same source? what about grapefruits and other citrus? did this parent plant have a name? Posted: 08 Sep 2016 03:29 PM PDT submitted by /u/Yokonzo [link] [comments]

If organic compounds are the most important for creating and sustaining life, why do we still continue to classify water as inorganic? Posted: 09 Sep 2016 06:04 AM PDT So this just occurred to me after hearing the news of NASA's Osiris-Rex mission to study the Bennu asteroid. If my understanding is correct this NASA mission is trying to find out more about how our solar system formed by analysing the amount of Carbon (organic compound) that it is made from. The correspondent reporting on the mission says "the scientists don't know what they'll discover but they'll be looking for complex compounds needed for life. These are called organic compounds" I then did some digging and found a Cliff Notes page on the role organic compounds play in the chemical basis for life It states "The chemical compounds of living things are known as organic compounds because of their association with organisms and because they are carbon-containing compounds. Organic compounds are the compounds associated with life processes...Among the numerous types of organic compounds, four major categories are found in all living things: carbohydrates, lipids, proteins, and nucleic acids" There's no mention of the important role water plays in life processes. So my question is If organic compounds (ones that contain Carbon) are the most important for creating and sustaining life why do we still continue to classify water as an inorganic compound (even though it doesn't contain carbon)? We make exceptions for some compounds (i.e. some carbonic compounds are classified as inorganic) so why can't we do the same for H2O? submitted by /u/Subs-man [link] [comments]

Why can a single individual react so differently to drugs in the same family (i.e. Xanax vs Ativan, both benzodiazepines)? And why do different individuals experience just as much variance between drugs, but not the same experiences on the same drugs as other individuals? Posted: 08 Sep 2016 08:57 AM PDT I hope I was coherent, but I'll give some examples to clarify. Individuals A and B have been prescribed both Xanax and Ativan. (A) reports that Xanax has had a stronger effect on their anxiety, while Ativan is too mild and ineffective. (B) reports that Ativan is stronger and more effective, while his Xanax is too mild. Assuming similar BMI, same sex, and same treatment method, why are the experiences so different? submitted by /u/LevarBurgers [link] [comments]

Why is isopropyl alcohol considered toxic/dangerous, but ethanol is not, despite similar ld50 values? Posted: 08 Sep 2016 08:46 AM PDT So I've seen similar posts but none seem to explain to the level that I'm looking for. The way I've read Isopropyl metabolism ->acetone -> lactic acid -> pyruvate -> acetyl coA Whereas ethanol metabolism -> Acetylaldehyde -> acetate -> water+ CO2 Acetone is normally found as a product beta oxidation of fatty acids. The body has a distinct process for handling this and long term studies on ketogenic diets don't necessarily point to them being damaging. The only things I can think of are: -Isopropyl alcohol is more potent, and thus people who don't know better drink more of it, and end up dead. -The additives to make it taste bad are actually toxic. -Isopropyl metabolism exhausts the body's supply of co-enzymes, and you are stuck with a lot of acetone. The ld50 of isopropyl is about 5g/kg and ethanol is about 7g/kg, so they're pretty similar. Edit: Update: Found this little paper here: https://toxnet.nlm.nih.gov/cgi-bin/sis/search/a?dbs+hsdb:@term+@DOCNO+116 While the majority of it is converted to acetone, some of it is converted to formate, the anion of formic acid. Formic acid is what causes blindness in methanol consumption. submitted by /u/TPMJB [link] [comments]

Does sound travel extremely well through a neutron star? Posted: 08 Sep 2016 11:45 AM PDT As far as I'm aware, the denser a substance is, the better sound travels through it. That'd be why you can hear sounds far away on a clear winter day or just before a rain storm when the atmosphere has high humidity. Would the same apply to a neutron star, could you hear sounds extremely far away through the material a neutron star is made of, in theory? Of course there are other things to take into consideration, but if you're strictly thinking about how well sound transmits through the extremely dense neutron star, would it be true that the sound can travel very far and very quickly and efficiently? submitted by /u/naphthoylindole [link] [comments]

At extreme temperatures, do photons behave differently? Posted: 08 Sep 2016 11:40 PM PDT Would a photon at 0K behave differently than one at 300K? What about a photon at 9999999999K? Are there any anomalies as photons approach these temperatures? Since we are unable to actually create these scenarios [but can get pretty darn close], I understand the question may be too difficult to answer. submitted by /u/Cbreezy517 [link] [comments]

Is true wireless charging possible? Posted: 08 Sep 2016 04:35 PM PDT They need wires and only work when the phone is almost touching them. Why? How much energy would be needed to charge a smartphone from 5 meters away? submitted by /u/Pedro-Afonso [link] [comments]

Do people retain information better depending on the color of light source they're under? Posted: 08 Sep 2016 05:24 PM PDT I'm not sure if that's a dumb question or not. submitted by /u/Notaloafofbread [link] [comments]

Is it possible to figure out the stage of Fall a region is in by doing a spectral analysis from a satellite? Posted: 08 Sep 2016 01:34 PM PDT The spectral analysis would be checking leaf color change over time over a large swath of land. In theory, over time there would be a general shift (different per region) from green to a Fall color. submitted by /u/SillyMarbles [link] [comments]

Can something be 1.5 plank lengths long? Posted: 08 Sep 2016 07:52 PM PDT Nothing can be shorter than a plank length, but is length/distance a discrete thing? submitted by /u/SendMeOrangeLetters [link] [comments]

Can the blue land crab (cardisoma guanhumi) breathe underwater? Posted: 08 Sep 2016 07:46 AM PDT The blue land crab is described online as being semi-terrestrial, is said to be capable of living in both terrestrial and marine environments, and is said to return to water to drink and to breed. On one website, they're described as needing water to breathe. All that considered, I need a definitive answer to these questions: Would one of them (apparently a juvenile or young adult) survive if released into water? Can this species of land crab breathe underwater? Is it capable of swimming? submitted by /u/Answerpls8 [link] [comments]

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If dark matter is found and proven, how much would that change physics and math?

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• If dark matter is found and proven, how much would that change physics and math?
• Are there any Laws of Biology?
• Hi ask science. Is divining by zero the same as multiplication of infinity and why/why not?
• Can a buckyball shape be formed with any other elements aside from Carbon?
• Is it possible for planets to have a "plane" below a star making them impossible to notice through brightness analysis from earth?
• How do we know so much about the insides of the earth, when the deepest we've ever gotten was 12km (40K/ft)?
• If light is part of the electromagnetic spectrum would it be possible to make light-emitting antennas and radio-emitting diodes?
• Does a magnetic , electric or electromagnetic field warp space time? And if so to what degree, and how much power do you have to use to warp space time to a degree that is noticeable?
• Why have the ISS in orbit instead of on the moon?
• How does one accurately determine the bond angle of the hydrogen atoms in a molecule of water?
• Can emotion, well-being, and mental illness be understood/studied on a fundamental and molecular level?
• Depth of Field and Virtual Reality, How Does the Human Eye Experience DoF in VR?
• Why do engines run more efficiently when hot?
• Do individual moving charges create a magnetic field?
• Since linear combinations of eigenstates are eigenstates why are atomic spectra ultimately quantized?
• Why are the wavelength intervals in some radio tuning interfaces not spaced in a consistent fashion?
• In a hyperbolic orbit, what is the shape of the larger body's orbit?
• Are birds really dinosaurs? And if so, what's the proof?
• What happens in my brain when I hear my name vs when I hear someone else's?
• Why can an isotope between two stable isotopes be unstable?

If dark matter is found and proven, how much would that change physics and math? Posted: 07 Sep 2016 11:55 PM PDT I don't have a math background so the in depth answers will be above me, but I just wonder if a discovery like proving dark matter will have a fundamental shift in math and physics theories? submitted by /u/SpaghettiHell [link] [comments]

Are there any Laws of Biology? Posted: 07 Sep 2016 09:56 PM PDT Boyle's law is an example of a law of thermodynamics. Hooke's law is an example of a law of physics. The Pythagorean theorem can be described as a law of geometry. Are there any laws of biology? Or is the interaction of cells and molecules on a biological scale to complex to have specific laws? submitted by /u/playking57 [link] [comments]

Hi ask science. Is divining by zero the same as multiplication of infinity and why/why not? Posted: 07 Sep 2016 11:01 AM PDT submitted by /u/woodenspooned [link] [comments]

Can a buckyball shape be formed with any other elements aside from Carbon? Posted: 07 Sep 2016 10:32 PM PDT Title. I was watching Big Brother and they had some made up element called 'vetonium' which was shaped like a big buckyball. Which got me to wondering if there actually are any other (real) elements or molecules aside from Carbon that can form a buckyball shape. And if only Carbon can form the buckyball shape, why is this? What's so special about Carbon? Hopefully my question isn't too obvious/stupid. I don't know much about chemistry beyond first year undergrad courses. submitted by /u/HellsArchitect [link] [comments]

Is it possible for planets to have a "plane" below a star making them impossible to notice through brightness analysis from earth? Posted: 08 Sep 2016 06:11 AM PDT Read an article about the way most of the exoplanets are spotted through dimming when they traveled in front of the star, and it made me wonder if another big planet could alter it's orbit to not make it travel in front of the star when viewed from earth. (making it fly "below" so to speak) Are most orbits stuck on a central plane like ours or are there different kinds? submitted by /u/Natomica [link] [comments]

How do we know so much about the insides of the earth, when the deepest we've ever gotten was 12km (40K/ft)? Posted: 08 Sep 2016 03:00 AM PDT Seeing the TIL about the viscosity of the earth's mantle, it got me thinking. How are we able to have so much information about what makes up the inside of the earth when we have never been able to drill 'very far' (12km falls into nothing scale-wise). Are these theories, or is the knowledge of the core based on strong facts? submitted by /u/deknegt1990 [link] [comments]

If light is part of the electromagnetic spectrum would it be possible to make light-emitting antennas and radio-emitting diodes? Posted: 07 Sep 2016 09:21 PM PDT The wiki page is a bit confusing regarding that, if it's the same phenomena but at a different frequency/wavelength then the same principles should apply for antennas and diodes but at the same time it seems as if the term "electromagnetic spectrum" is an umbrella used to name many different things with wave-like properties in common. submitted by /u/Samus_ [link] [comments]

Does a magnetic , electric or electromagnetic field warp space time? And if so to what degree, and how much power do you have to use to warp space time to a degree that is noticeable? Posted: 08 Sep 2016 07:14 AM PDT Please dont delete this, part of the question. also why do people keep saying that the emdrive should generate no thrust when people who experiment record thrust (albeit a small amount). submitted by /u/Thelastshada [link] [comments]

Why have the ISS in orbit instead of on the moon? Posted: 07 Sep 2016 11:56 PM PDT It just seems like logical progression to me and makes sustainability easier. submitted by /u/Nathan1266 [link] [comments]

How does one accurately determine the bond angle of the hydrogen atoms in a molecule of water? Posted: 07 Sep 2016 07:33 PM PDT Recent reading on the properties of water led me to find some pretty outlandish statements concerning water's effect on it's environment when the bond angel is made more obtuse. Is this even possible? submitted by /u/coperni_cuss [link] [comments]

Can emotion, well-being, and mental illness be understood/studied on a fundamental and molecular level? Posted: 07 Sep 2016 09:27 PM PDT I've been reading on affective neuroscience and the biological determinates of well-being lately. Specifically, the book The Emotional Life of your Brain by Richard Davidson has captivated me. However, his studies relied primarily on MRI and fMRI scans; and thus, they outlined brain regions that were only (albeit, miraculously) correlated to different emotions and 'emotion styles.' Are we able to observe and quantify emotion on a more precise, say neuronal or molecular, level? Would this knowledge be better suited to fight neurological conditions (i.e. depression, schizophrenia)? Please let me know of any knowledge or literature that I may absorb; one of my current academic pursuits is to learn the absolute fundamentals of emotion and well-being. submitted by /u/Alexgoods [link] [comments]

Depth of Field and Virtual Reality, How Does the Human Eye Experience DoF in VR? Posted: 07 Sep 2016 06:18 PM PDT A lot of developers right now are trying to make DoF "work" in Virtual Reality. The basic setup right now is two screens, set a few inches from the eyes, with a lens for each eye focused to infinity. As I understand it, DoF is something that the eye "does", not a property of the light coming to the eye, and developers don't need to mimic it with software or hardware so long as the eyes are fooled into thinking that real distance is involved. I also understand that the human eye is not a simple camera, and that DoF is more complex than just the focus of the lens, I've even found research that says DoF is not affected by the diameter of the pupil in the human eye. DoF is just one byproduct of accommodation and should not be applied as liberally as game developers have in traditional non-VR titles. I think they're barking up the wrong tree, but I don't know enough to say either way and I'm not really keen on taking lessons on the human eye from game developers. What is DoF as experienced by the human eye, really, and is it something that needs to be built into a VR headset? submitted by /u/kodiakus [link] [comments]

Why do engines run more efficiently when hot? Posted: 07 Sep 2016 07:13 PM PDT My car gets get at least ten miles per gallon more when the engine is at optimum operating temperature. Why is this? I understand the oil may become less viscous but would that have much of effect? I can't find any good answers on google. submitted by /u/jeansonnejordan [link] [comments]

Do individual moving charges create a magnetic field? Posted: 07 Sep 2016 11:37 AM PDT Relativity explains the forces between two current-carrying wires in terms of relativistic length contraction, but what about two electrons next to each other? In their rest frame, there is only the electrostatic force, but for observers moving relative to the charges, there would be the additional lorentz forces. This cannot be explained by altering the profiles of the fields because then you would have to do the same thing for the charges in the current-carrying wire and end up with double the force. One from the fields being altered and one from the length contraction effect. Does this mean that individual moving charges do not produce a magnetic field? submitted by /u/La_vie_en_rose_61 [link] [comments]

Since linear combinations of eigenstates are eigenstates why are atomic spectra ultimately quantized? Posted: 07 Sep 2016 06:23 PM PDT I feel like I'm missing something obvious, but I can't quite put my finger on it. A linear combination of solutions to the Schrodinger equation is also a solution to the Schrodinger equation, but I never really understood the significance of that since we always seem to speak of electrons being in one of the basis eigenstates. Maybe there's a reason why I don't remember or just never dealt with, but I was having googling up an answer. What my question then boils down to is: If a linear combination of eigenstates is perfectly valid as an eigenstate, why can't an atom in the ground state have an electron transition to a fractional sum of eigenstates? Why do they only absorb and emit photons that transition them into other pure basis eigenstates? For example carbon absorbing a photon to move an electron from 2,1,0 to 1/2(2,1,0 + 3,1,0) or some other sum of fractional eigenstates so why are spectral lines ultimately quantized? I just don't know the right angle to come at this from. submitted by /u/crossedstaves [link] [comments]

Why are the wavelength intervals in some radio tuning interfaces not spaced in a consistent fashion? Posted: 07 Sep 2016 03:17 PM PDT I see AM-FM radios with tuning interfaces like this all the time: http://nevadanewsandviews.com/wp-content/uploads/2014/11/a2.jpg Usually at least one of the broadcasting bands (FM or AM) have their numbers in irregular intervals, not linear, or not even apparently logarithmic in progression. Sometimes the FM band may have the intervals evenly spaced but the AM spacing is more "erratic" (especially the spacing between 540hz and 600khz, then a 100khz change across the same distance). What establishes the reason for the irregular spacing and granularity? Are some wavelengths naturally more difficult in certain regions to broadcast signals without interference? Are the less granular areas mostly allotted for other, non-public and non-commercial purposes? submitted by /u/ccricers [link] [comments]

In a hyperbolic orbit, what is the shape of the larger body's orbit? Posted: 07 Sep 2016 03:00 PM PDT Suppose there are two bodies, e.g. a star and a planet. The star is initially at rest, and the planet has at least escape speed tangential to the star. That is, the planet is at the closest point in a hyperbolic orbit. What path does the star's "orbit" trace out after infinite time passes? Assume Newton's law only and no other bodies in the universe. Thanks for your help. submitted by /u/JWson [link] [comments]

Are birds really dinosaurs? And if so, what's the proof? Posted: 07 Sep 2016 08:00 AM PDT We are doing evolution in Biology class right now, and my teacher won't believe me that birds are dinosaurs, and by that extent reptiles. Am I wrong? It would be really awesome if you could give me sources, because according to my teacher Wikipedia is categorically wrong. submitted by /u/Uralowa [link] [comments]

What happens in my brain when I hear my name vs when I hear someone else's? Posted: 07 Sep 2016 06:12 PM PDT submitted by /u/JDIVII [link] [comments]

Why can an isotope between two stable isotopes be unstable? Posted: 07 Sep 2016 10:54 AM PDT S-34 and S-36 are stable, but S-35 isn't. This is one of the dozens of examples of this 'phenomenon,' but do we know why it happens? submitted by /u/TheLegitLogic [link] [comments]

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I read that, on average, 3 supernovas will occur in the Milky Way galaxy every century. If that is the case why haven't we observed any since the last one in 1604?

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• I read that, on average, 3 supernovas will occur in the Milky Way galaxy every century. If that is the case why haven't we observed any since the last one in 1604?
• Does scratching at irritations like bug bites harm or delay the healing process at all?
• If microwaves and gamarays have the ability to travel through walls(both of which is on the opposite spectrum), why can't visible light?
• Could someone help me understand the dephasing during T2-decay?
• Why are fires primarily red? Why don't fires naturally burn violet or green?
• On an atomic or molecular level, what happens to food when it goes off?
• Some dogs and cattle have very similar coat patterns, is that controlled by the same gene?
• How strong is a single carbon nanotube?
• What is the effect of Jupiter's pull on the sun?
• Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology
• I am floating in the center of a stationary ship in space. I throw a ball against the back wall. Does the ball cause the ship to move before I strike the opposite side?
• Are infections from species like Naegleriasis becoming more common?
• In terms of strength, how does caterpillar silk compare to spider silk?
• Why do rubber tires squeal on pavement?
• What is the name for the mixed particle that photons form when moving through a medium?
• Have all the Earth's crusts recycled to the mantle at some point?
• How do islands get internet?
• Why do magnets ruin computers and other electronic devices?
• Neutrinos vs. Photons: "Almost" the speed of light?
• Why Chile, Great Britain and Norway West coasts all look alike?
• In terms of colloidal stability is there a relation between colloid concentration and ion concentration?
• Why is mole defined as a fundamental quantity? Isn't it just a number of things like a dozen, or a trillion?
• How does a space rocket hold its angle of ascent during takeoff with no obvious points for correction - like the wings on a plane?

I read that, on average, 3 supernovas will occur in the Milky Way galaxy every century. If that is the case why haven't we observed any since the last one in 1604? Posted: 06 Sep 2016 10:20 AM PDT Source: https://arxiv.org/abs/1306.0559 submitted by /u/PA2SK [link] [comments]

Does scratching at irritations like bug bites harm or delay the healing process at all? Posted: 06 Sep 2016 07:58 PM PDT submitted by /u/Grasshop [link] [comments]

If microwaves and gamarays have the ability to travel through walls(both of which is on the opposite spectrum), why can't visible light? Posted: 06 Sep 2016 08:54 AM PDT submitted by /u/SilverWolf9300 [link] [comments]

Could someone help me understand the dephasing during T2-decay? Posted: 07 Sep 2016 06:08 AM PDT Could someone help me understand the dephasing during T2-decay which happens after the excitation of the magnetic vector in MRI? My concrete question is: Are the dephasing an expression of the single protons frequencies incoherence in the net magnetization vector, or is the incoherence happening in each proton? submitted by /u/torve_s [link] [comments]

Why are fires primarily red? Why don't fires naturally burn violet or green? Posted: 06 Sep 2016 08:36 PM PDT submitted by /u/Terrapinz [link] [comments]

On an atomic or molecular level, what happens to food when it goes off? Posted: 06 Sep 2016 07:59 AM PDT submitted by /u/OneChanceInALifetime [link] [comments]

Some dogs and cattle have very similar coat patterns, is that controlled by the same gene? Posted: 07 Sep 2016 06:10 AM PDT submitted by /u/canttaketheshyfromme [link] [comments]

How strong is a single carbon nanotube? Posted: 06 Sep 2016 09:59 AM PDT Let's say someone firmly anchors a single, continuous carbon nanotube across a hallway at neck height. I walk down the hallway. What happens when I reach the tube? Do I harmlessly break the tube? Do I get a cut to my neck? Do I get decapitated? Edit to say: I couldn't decide if this was a "physics" question or an "engineering" question. submitted by /u/SashaTheBOLD [link] [comments]

What is the effect of Jupiter's pull on the sun? Posted: 06 Sep 2016 08:59 PM PDT So I'm watching a documentary (2008) that is talking about looking for other planets and how they watch a star to see if it "wobbles" because that would show the gravitational pull of planets orbiting that star. They go on to say Jupiter pulls the sun 0.5 a million miles side to side when it orbits. And it takes 12 years (presume earth years) to orbit the sun. Question1: is this still how we look for planets? And more importantly: Does this has an effect on the earth as we could end up with the sun closer to us if Jupiter is near us / on the same side of the sun than if Jupiter was opposite us for example? Like does it create warmer weather patterns or conversely colder patterns .. Or is 0.5 million miles not that much in reality? submitted by /u/Canuckser [link] [comments]

Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology Posted: 07 Sep 2016 08:04 AM PDT Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Biology, Chemistry, Neuroscience, Medicine, Psychology Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for a typical /r/AskScience post? No question is too big or small for AAW. In this thread you can ask any science-related question! Things like: "What would happen if...", "How will the future...", "If all the rules for 'X' were different...", "Why does my...". Asking Questions: Please post your question as a top-level response to this, and our team of panellists will be here to answer and discuss your questions. The other topic areas will appear in future Ask Anything Wednesdays, so if you have other questions not covered by this weeks theme please either hold on to it until those topics come around, or go and post over in our sister subreddit /r/AskScienceDiscussion , where every day is Ask Anything Wednesday! Off-theme questions in this post will be removed to try and keep the thread a manageable size for both our readers and panellists. Answering Questions: Please only answer a posted question if you are an expert in the field. The full guidelines for posting responses in AskScience can be found here. In short, this is a moderated subreddit, and responses which do not meet our quality guidelines will be removed. Remember, peer reviewed sources are always appreciated, and anecdotes are absolutely not appropriate. In general if your answer begins with 'I think', or 'I've heard', then it's not suitable for /r/AskScience. If you would like to become a member of the AskScience panel, please refer to the information provided here. Past AskAnythingWednesday posts can be found here. Ask away! submitted by /u/AutoModerator [link] [comments]

I am floating in the center of a stationary ship in space. I throw a ball against the back wall. Does the ball cause the ship to move before I strike the opposite side? Posted: 06 Sep 2016 12:14 PM PDT If the answer is no, due to this being a closed system. I ask why? If the ball strikes the back wall one second before I hit the other side and equalize the momentum, where is that 'lost force' from the ball hiding at? If you say it does move, but then I hit the front wall to balance the force out, where I am still in the original spot then my question is this: The ball hit the wall, the spaceship moves 10 feet backward. I am now floating toward the front and hit the front wall to impart the force to go the opposite direction 10 feet. What would cause the ship to decelerate and make the net movement zero? submitted by /u/thaliart [link] [comments]

Are infections from species like Naegleriasis becoming more common? Posted: 07 Sep 2016 07:23 AM PDT Or are we just hearing about them more? Story which made me think of this: http://www.dailyfreeman.com/general-news/20160901/rare-infection-suspected-in-death-of-19-year-old-from-kingston But I believe there are others we've all heard about -- flesh eating bacteria. Also, if this amoeba entered her sinuses, basically anyone is vulnerable, correct? So open wounds, etc does not matter? submitted by /u/whistlerbrk [link] [comments]

In terms of strength, how does caterpillar silk compare to spider silk? Posted: 06 Sep 2016 08:03 PM PDT submitted by /u/liverstealer [link] [comments]

Why do rubber tires squeal on pavement? Posted: 06 Sep 2016 09:34 PM PDT Why do rubber tires make that distinctive squealing noise? What physical properties cause this? submitted by /u/Macwhopper [link] [comments]

What is the name for the mixed particle that photons form when moving through a medium? Posted: 06 Sep 2016 06:29 PM PDT So I know that the absorption/emission explanation for light slowing down in a medium is wrong, and I somewhat understand the other explanation. But for the life of me I can't recall what exactly the quasi-particle that is formed during the interaction is called. I've checked the FAQ on the subject, but the only names I've found are "polariton" and "phonon", which I don't remember reading in previous explanations. Is there another name, or is my memory just faulty? submitted by /u/15MinuteUpload [link] [comments]

Have all the Earth's crusts recycled to the mantle at some point? Posted: 06 Sep 2016 08:01 PM PDT *Has all the Earth's crust [8] submitted by /u/sizobonana [link] [comments]

How do islands get internet? Posted: 06 Sep 2016 07:41 PM PDT submitted by /u/liberaltariat [link] [comments]

Why do magnets ruin computers and other electronic devices? Posted: 06 Sep 2016 08:07 PM PDT submitted by /u/agodscomma [link] [comments]

Neutrinos vs. Photons: "Almost" the speed of light? Posted: 06 Sep 2016 05:06 PM PDT Photons have zero rest mass, therefore they move at the speed of light. Neutrinos, on the other hand, do have a rest mass, although very small. Is there a rule at super light masses, that particles are required to move at relativistic speeds? It seems like the difference between .99999999c and c is still basically infinite. I can't wrap my mind around this. Any help is welcome. submitted by /u/xxxxx420xxxxx [link] [comments]

Why Chile, Great Britain and Norway West coasts all look alike? Posted: 06 Sep 2016 09:31 PM PDT I just noticed on google maps that Chile, Great Britain and Norway west coasts all look alike. They have those canals infiltrating the mainland. is there any geological reason for this or is it just coincidence? why can't i find any major cost like this facing East on the globe? sorry for my english. submitted by /u/Danilo_Mello [link] [comments]

In terms of colloidal stability is there a relation between colloid concentration and ion concentration? Posted: 07 Sep 2016 12:34 AM PDT Lets say we have a colloid at a concentration of 5 wt% and we know the suspension becomes unstable in an electrolyte with a total ion concentration of 10 mM (arbitrary numbers), then can we predict what ion concentration a 0.5 wt% suspension will be? Will it be 100 mM (I doubt it). I assume the colloid will be more stable at higher concentrations because even though the Debye length for a given particle will be smaller, there is a smaller probability of a given particle interacting with another. submitted by /u/samyall [link] [comments]

Why is mole defined as a fundamental quantity? Isn't it just a number of things like a dozen, or a trillion? Posted: 06 Sep 2016 01:19 PM PDT Further, why does it even have a dimension? Everywhere it seems to be explained to think of it just like a number of entities, then why does it have a dimension and called a fundamental quantity? submitted by /u/thehighschoolgeek [link] [comments]

How does a space rocket hold its angle of ascent during takeoff with no obvious points for correction - like the wings on a plane? Posted: 06 Sep 2016 11:29 PM PDT I'm always baffled how the SpaceX rockets hold such a straight line with so much thrust on the back. submitted by /u/Banditbro [link] [comments]

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