Why does electricity always hum at a B-flat pitch?

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• Why does electricity always hum at a B-flat pitch?
• Is the universe expanding faster and faster at the same speed everywhere or is there areas where it's expanding at a different speed?
• Can plants get cancer from the sun like humans can get skin cancer?
• If a Train Circling the Globe Traveled Fast Enough, Would the Passengers Inside Float?
• How do we know the composition and mass of some planets/stars ?
• Are there any animals that consume non cellular matter as a significant part of their diet?
• Why do some metals glow red hot at their melting point (i.e. Iron, nickel, etc) while others (i.e. Aluminum) are silver when molten?
• Can other iron-group elements be alloyed with carbon to create a "heavy steel"? If so, what are their properties?
• Old 3D video games rendered circles as visibly crude polygons. Modern games have them perfectly circular. Did we just increase polygon count until its too high to notice, or have rendering algorithms changed to allow "true" circles?
• Can chickens have identical twins?
• How does the stomach know when you should vomit something you ate?
• Why is nitrogen inert?
• What creates the sensation of thirst?
• What are the implications of finding magnetic monopoles?
• Why do lionesses leave the safety of the pride to give birth?
• What would Earth's sky look like if a Black Hole was in the Solar System ?
• How are vaccines replicate or recreated for distribution?
• What changes does someone go through when acclimating to high altitude?
• What's the little peg in an airplane window for?
• What causes a hurricane to stall in one area for an extended time, as Harvey is doing?
• If I had an extension cord plugged into a power source at the Earth that went all the way to the Moon, how long would it take for the power to reach once you plugged something in on the other end?
• Why does holding your nose inhibit your sense of taste?

Why does electricity always hum at a B-flat pitch? Posted: 27 Aug 2017 11:00 AM PDT Whenever I pass a power plant or hear a lot of electricity running through my house, I always hear that pitch. Edit: To those asking, I am a musician. submitted by /u/agodscomma [link] [comments]

Is the universe expanding faster and faster at the same speed everywhere or is there areas where it's expanding at a different speed? Posted: 28 Aug 2017 03:17 AM PDT submitted by /u/ViciousFerret [link] [comments]

Can plants get cancer from the sun like humans can get skin cancer? Posted: 27 Aug 2017 06:43 PM PDT submitted by /u/sofa_king_lo [link] [comments]

If a Train Circling the Globe Traveled Fast Enough, Would the Passengers Inside Float? Posted: 27 Aug 2017 10:19 PM PDT I understand that the concept of "floating" in microgravity is due to a spacecraft moving faster than gravity is able to pull it down resulting in a continuous orbit that "falls" around the Earth. Discounting the practical constraints, would a train moving around the globe at or exceeding escape velocity cause its passengers to experience microgravity? What would the passengers experience as they approached this speed? What would happen when the train exceeded this speed assuming it remained tightly on its track? submitted by /u/ChuckTexas [link] [comments]

How do we know the composition and mass of some planets/stars ? Posted: 27 Aug 2017 08:21 PM PDT submitted by /u/DannyHei [link] [comments]

Are there any animals that consume non cellular matter as a significant part of their diet? Posted: 27 Aug 2017 04:11 PM PDT I recall hearing of an animal that will ingest rocks to aid the mechanical act of digestion, but what about for nutritional need? submitted by /u/riddus [link] [comments]

Why do some metals glow red hot at their melting point (i.e. Iron, nickel, etc) while others (i.e. Aluminum) are silver when molten? Posted: 27 Aug 2017 07:42 PM PDT submitted by /u/GreenThought [link] [comments]

Can other iron-group elements be alloyed with carbon to create a "heavy steel"? If so, what are their properties? Posted: 27 Aug 2017 06:46 PM PDT submitted by /u/amaROenuZ [link] [comments]

Old 3D video games rendered circles as visibly crude polygons. Modern games have them perfectly circular. Did we just increase polygon count until its too high to notice, or have rendering algorithms changed to allow "true" circles? Posted: 28 Aug 2017 02:25 AM PDT submitted by /u/GeneReddit123 [link] [comments]

Can chickens have identical twins? Posted: 27 Aug 2017 07:52 PM PDT Would they have to come from one egg? I found some references to a chicken with two heads and that sort of thing, but didn't see much about chickens having otherwise normal healthy twin chicks. submitted by /u/Ivan_Whackinov [link] [comments]

How does the stomach know when you should vomit something you ate? Posted: 27 Aug 2017 07:39 PM PDT submitted by /u/Kichitsukima [link] [comments]

Why is nitrogen inert? Posted: 28 Aug 2017 06:07 AM PDT Why is it that (molecular) nitrogen is more inert than oxygen that is more inert than flourine? Because Ive learned that a tripple bond is less stable than a double bond, thats less stable than a single bond. Is this because electronegativity becomes higher along that line, and high electronegativity for a two-atom gas is more important for high reactivity than the bond order? submitted by /u/MappeMappe [link] [comments]

What creates the sensation of thirst? Posted: 27 Aug 2017 08:35 PM PDT Is there like a "Thirst sensor" protein? submitted by /u/mementomoriok [link] [comments]

What are the implications of finding magnetic monopoles? Posted: 27 Aug 2017 02:02 PM PDT If we were to find magnetic monopoles exist and potentially also make them, what would it mean for science? What would be the implications for normal life? submitted by /u/Sterweror [link] [comments]

Why do lionesses leave the safety of the pride to give birth? Posted: 27 Aug 2017 06:07 PM PDT submitted by /u/t4yl0rj4d3 [link] [comments]

What would Earth's sky look like if a Black Hole was in the Solar System ? Posted: 27 Aug 2017 10:09 AM PDT Assuming that the black hole is small and far enough to not swallow Earth right away. And how would Humanity react to that ? submitted by /u/space_human01010 [link] [comments]

How are vaccines replicate or recreated for distribution? Posted: 27 Aug 2017 06:16 PM PDT submitted by /u/ForegroundHealth [link] [comments]

What changes does someone go through when acclimating to high altitude? Posted: 27 Aug 2017 09:43 PM PDT I have recently moved from sea level up to 8000ft in elevation. As a runner, this dramatic change makes it difficult to get enough air while I'm running. How does my body adjust itself to receiving thinner air? submitted by /u/Sentient_pasta [link] [comments]

What's the little peg in an airplane window for? Posted: 27 Aug 2017 07:57 AM PDT https://i.imgur.com/mL1CX6W.jpg submitted by /u/TheKLaMike [link] [comments]

What causes a hurricane to stall in one area for an extended time, as Harvey is doing? Posted: 27 Aug 2017 11:50 PM PDT Hurricane Harvey is currently causing massive flooding hundreds of miles east of where it made landfall. I have read that this is because because it has stalled in one region for days, and is continuously scooping up moisture from the gulf and dumping it over the coast. Why has this hurricane stalled near shore, and what factors make other hurricane likely to do the same? submitted by /u/impedocles [link] [comments]

If I had an extension cord plugged into a power source at the Earth that went all the way to the Moon, how long would it take for the power to reach once you plugged something in on the other end? Posted: 27 Aug 2017 11:24 PM PDT submitted by /u/Tactical_Tugboats [link] [comments]

Why does holding your nose inhibit your sense of taste? Posted: 27 Aug 2017 06:59 PM PDT submitted by /u/Greg4581 [link] [comments]

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How can we hear the voice in our head and how is it produced?

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• How can we hear the voice in our head and how is it produced?
• Is it easier to predict the future or the past of orbits?
• How can xylitol be an alcohol and a sugar at the same time?
• how is it possible for carbon-14 to be present in coal samples millions of years old?
• How does the Van De Graff Generator work?
• What is the density of DNA?
• Can blind people tell if it's dark outside?
• If a hurricane gets it's moisture from the ocean, does that create salt water rain, or does the ocean become slightly more concentrated? What happens to the salt in the water when the vapor is absorbed?
• How can they accurately measure rainfall in hurricanes?
• Is the accelerating expansion of the universe a constant acceleration or does the acceleration vary?
• What is happening on a molecular level when I make a cup of coffee?
• North of the Tropic of Cancer is the sun never on the north half of the sky?
• Why can the sound of thunder last for several seconds when a lightning flash is much quicker?
• In construction of buildings what are the different considerations for short and tall buildings?
• How do spiders not get caught in their own webs? Can they get caught in other spider's webs?
• How do mosquitoes know what blood type you are?

How can we hear the voice in our head and how is it produced? Posted: 26 Aug 2017 05:12 PM PDT submitted by /u/Theblankuser [link] [comments]

Is it easier to predict the future or the past of orbits? Posted: 27 Aug 2017 05:44 AM PDT We know about eclipses in the future and we can also figure out unobserved eclipses of the past with the information we have. But is there any difference in our accuracy of predictions between future and past events? What about longer time, less precise things than eclipses, like predicting where Mars is relative to us in a million years? submitted by /u/empire314 [link] [comments]

How can xylitol be an alcohol and a sugar at the same time? Posted: 26 Aug 2017 02:19 PM PDT Basically what the title says. Xylitol is a sugar, but it has the "ol" ending, so it's also an alcohol according to my teacher. How? submitted by /u/63796379 [link] [comments]

how is it possible for carbon-14 to be present in coal samples millions of years old? Posted: 27 Aug 2017 12:29 AM PDT I tried looking up the phrase "how can carbon 14 be present in coal beds" and "carbon 14 found in coal" and found no reliable sources with most of the search results listed being creationist sources which I don't believe to be reliable. If carbon-14 decays in thousands of years how is it possible for it to be present in coal samples millions of years old? submitted by /u/iamcurious1234 [link] [comments]

How does the Van De Graff Generator work? Posted: 27 Aug 2017 05:34 AM PDT I'm really having difficulties with it and it'll be on my exams. Explanation with simpler terms is appreciated. submitted by /u/tejas22 [link] [comments]

What is the density of DNA? Posted: 26 Aug 2017 05:06 PM PDT submitted by /u/SymphonyofWar181 [link] [comments]

Can blind people tell if it's dark outside? Posted: 26 Aug 2017 12:38 PM PDT Like they'd be able to tell if it is cooler outside but what if it was winter or something like that. submitted by /u/Schibalski [link] [comments]

If a hurricane gets it's moisture from the ocean, does that create salt water rain, or does the ocean become slightly more concentrated? What happens to the salt in the water when the vapor is absorbed? Posted: 26 Aug 2017 08:07 AM PDT Earth sciences submitted by /u/Frankensteinrunsmile [link] [comments]

How can they accurately measure rainfall in hurricanes? Posted: 26 Aug 2017 11:32 AM PDT If the rain is essentially coming down sideways, how is the total measured accurately? submitted by /u/4gotOldU-name [link] [comments]

Is the accelerating expansion of the universe a constant acceleration or does the acceleration vary? Posted: 26 Aug 2017 01:09 PM PDT submitted by /u/HaphazardlyOrganized [link] [comments]

What is happening on a molecular level when I make a cup of coffee? Posted: 26 Aug 2017 01:32 PM PDT Every morning I get up and I make a coffee by adding a teaspoon of instant coffee with two teaspoons of sugar to boiling water and then adding milk and string, what is happening when everything is mixing together? submitted by /u/fenster112 [link] [comments]

North of the Tropic of Cancer is the sun never on the north half of the sky? Posted: 26 Aug 2017 08:41 PM PDT submitted by /u/tymuthi [link] [comments]

Why can the sound of thunder last for several seconds when a lightning flash is much quicker? Posted: 26 Aug 2017 08:32 AM PDT submitted by /u/WhyAmIMisterPinkk [link] [comments]

In construction of buildings what are the different considerations for short and tall buildings? Posted: 26 Aug 2017 09:35 AM PDT Short buildings are more often 'flatter', and thus their loads and weights are distributed to a larger area thus minimizing pressures. In tall buildings steel frames and spread footing are used to distribute its load to a larger area and thus achieving the same result. Beside weights and loads are there any other differences, in terms of design and physics concepts, that structural engineers have to consider in constructing tall and short buildings? submitted by /u/TheBigNewsMorgan [link] [comments]

How do spiders not get caught in their own webs? Can they get caught in other spider's webs? Posted: 26 Aug 2017 09:13 AM PDT Am watching two different species of spiders very near to each other and was just wondering... submitted by /u/nat0han [link] [comments]

How do mosquitoes know what blood type you are? Posted: 26 Aug 2017 06:24 AM PDT submitted by /u/noir_01001 [link] [comments]

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Do insects experience pain in the same way we do?

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• Do insects experience pain in the same way we do?
• Why does cigarette smoke swirl in continuous lines rather than dispersing in air? Is it just the shape of air current or is there a binding force?
• Every computer program is compiled (or interpreted) by another program, called the compiler or interpreter. This includes compilers themselves. Is there a "common ancestor" compiler of all high-level programs today, and if so what is it?
• Are humans more biased to "liking" certain colors? E.g. Is "blue" a much more common color to like than "green"
• To switch or not to switch?
• Do we need less energy to maintain our body temperature in a hot environment?
• Why do we hiccup?
• Can we prove that there are things that have definite answers that can't be proven?
• We are scientists from the Society of Vertebrate Paleontology coming to you from our annual meeting in Calgary, Alberta. We study fossils. Ask Us Anything!
• Why does sour taste trigger your taste glands to release saliva ?
• What kind of statistics are needed to determine whether a point is moving randomly?
• In neuron depolarization, why does the cell use two types of ions (Na+ and K+) if they are both positive? Why not just use one type?
• How can some animals eat just one thing and get all nutritions and vitamins and all that?
• Why does a magnet fall slowly when dropped down in a copper pipe?
• How do flat moles form in the first place?
• How does the fact that energy is quantized explain blackbody radiation?
• Are we viewing the Sun's magnetic field in this picture of the recent solar eclipse? [Photo in comments section.]
• [Mathematics] Two distinct points are always colinear. Three distinct non-colinear points are always coplanar. Four distinct non-coplanar points always form the points of a tetrahedron. What can be said of 5 distinct points?
• Why can't dogs eat certain foods like chocolate?
• Does the total eclipse affect animal behavior? If so, what does it change?

Do insects experience pain in the same way we do? Posted: 25 Aug 2017 05:41 PM PDT For instance, would a bee have a similar experience to a human if their leg was torn off? submitted by /u/Dylan7225 [link] [comments]

Why does cigarette smoke swirl in continuous lines rather than dispersing in air? Is it just the shape of air current or is there a binding force? Posted: 25 Aug 2017 07:19 AM PDT In ideal conditions, when someone puffs out a smoke ring it travels while retaining its original shape - is there something holding the shape together or is it just particles travelling in their original direction without being dispersed by air current? Even when smoke leaves the cigarette and is transformed it appears to stretch out like gum, rather than disperse instantly: http://footage.framepool.com/shotimg/qf/723479910-cigarette-smoke-pattern-no-people-moving-motion.jpg Is there a binding force or is it just the shape of air currents it travels through? submitted by /u/thesignal [link] [comments]

Every computer program is compiled (or interpreted) by another program, called the compiler or interpreter. This includes compilers themselves. Is there a "common ancestor" compiler of all high-level programs today, and if so what is it? Posted: 25 Aug 2017 07:15 AM PDT I assume the first compilers were written by hand in machine code. Then subsequent compilers can be written in the language implemented by that first compiler, etc. Is there a single hand-written program that basically "birthed" all high-level code we use today? submitted by /u/rm999 [link] [comments]

Are humans more biased to "liking" certain colors? E.g. Is "blue" a much more common color to like than "green" Posted: 25 Aug 2017 05:50 PM PDT If one color is more dominant- is there a scientific / cultural reason why? submitted by /u/Snydypants [link] [comments]

To switch or not to switch? Posted: 26 Aug 2017 06:54 AM PDT So, i just remembered a discussion I had with a friend and where I strongly disagreed with him and my maths teacher, because in my head, it makes no sense. So here is the scenario: There are three doors: Behind two doors is nothing, but behind one door is a car that you can win, you just need to choose the correct door. After you select one door, the Showmaster will open one of the doors with nothing behind them. Now you can choose if you want to stick with the door you first picked or if you want to switch. My math teacher said that you have a higher chance of winning if you switch doors, because when you picked the first door you picked a 1 out of 3 chance, but if you switch now it's a 50/50 chance For me this makes absolutely no sense, because as soon as one door is eliminated you essentially pick again, and both doors are a 50/50 chance. Or am I missing something? submitted by /u/Alias-_-Me [link] [comments]

Do we need less energy to maintain our body temperature in a hot environment? Posted: 25 Aug 2017 06:12 PM PDT submitted by /u/Memecas [link] [comments]

Why do we hiccup? Posted: 25 Aug 2017 06:29 PM PDT submitted by /u/stranker21 [link] [comments]

Can we prove that there are things that have definite answers that can't be proven? Posted: 25 Aug 2017 12:21 PM PDT I've been interested in mathematical proofs, and I've been fascinated by the amount of things we are pretty sure we know the answer, but can't prove. I was wondering if we know if everything even has a proof. Are there mathematical concepts that, true or false, we will never find a proof for? submitted by /u/bathord [link] [comments]

We are scientists from the Society of Vertebrate Paleontology coming to you from our annual meeting in Calgary, Alberta. We study fossils. Ask Us Anything! Posted: 26 Aug 2017 07:44 AM PDT Hello AskScience! We are members of the Society of Vertebrate Paleontology. We study fossil fish, mammals, amphibians, and reptiles — anything with a backbone! Our research includes how these organisms lived, how they were affected by environmental change like a changing climate, how they're related, and much more. You can learn more about SVP in this video or follow us on Twitter @SVP_vertpaleo. We're at our 77th Annual Meeting in Calgary, Alberta. Ask us your vertebrate paleontology questions! We'll be here to answer your questions later this afternoon (Mountain Time)! Joining us today are: PastTime Podcast hosts Matt Borths, Ph.D. and Adam Pritchard, Ph.D.: Dr. Pritchard studies the early history of the reptiles that gave rise to lizards, dinosaurs, crocodiles and birds. Dr. Borths works on the evolution of carnivorous mammals and African ecosystems. He is a postdoctoral researcher at Ohio University. Find them on Twitter @PastTimePaleo. Stephanie Drumheller, Ph.D.: Dr. Drumheller is a paleontologist at the University of Tennessee whose research focuses on the processes of fossilization, evolution, and biology, of crocodiles and their relatives, including identifying bite marks on fossils. Find her on Twitter @UglyFossils. Eugenia Gold, Ph.D.: Dr. Gold studies brain evolution in relation to the acquisition of flight in dinosaurs. She is a postdoctoral researcher at Stony Brook University. Find her on Twitter @DrNeurosaurus. submitted by /u/VertPaleoAMA [link] [comments]

Why does sour taste trigger your taste glands to release saliva ? Posted: 25 Aug 2017 05:24 PM PDT Why do your taste glands release saliva when you eat something sour but not when you eat something sweet or bitter? I've noticed this everytime I eat something sour but haven't seen it with any other type of flavor. Is it a specific gland that releases saliva ? submitted by /u/Tsarofski98 [link] [comments]

What kind of statistics are needed to determine whether a point is moving randomly? Posted: 25 Aug 2017 11:40 PM PDT Bear with me, there's some explaining to do here: I was watching water striders skim across the surface of a lake, and was wondering what kind of statistical techniques or math are needed to determine whether the movement is random, or following some sort of pattern. So a more precise formulation of the question: suppose we have a point S that starts at the origin. Every second, point S moves a fixed distance (let's say 1 unit) in some direction in the 2D plane. How long would I have to watch point S before I could be 95% confident whether or not the movement was random? Extension questions; suppose the distance moved is variable also, not just the direction. How does that change things? submitted by /u/quatrevingtneuf [link] [comments]

In neuron depolarization, why does the cell use two types of ions (Na+ and K+) if they are both positive? Why not just use one type? Posted: 25 Aug 2017 08:44 PM PDT Is it because one type is faster than the other at crossing the membrane? Or is it just because there is more sodium available in our diet? submitted by /u/ten_mile_river [link] [comments]

How can some animals eat just one thing and get all nutritions and vitamins and all that? Posted: 25 Aug 2017 11:40 AM PDT We need to eat a balanced diet to get everything we need. Some our bodies can just create (classic vitamin D using our skin), but others we just have to consume. How can certain animals (how many are there? What is the percentage) just eat one thing. Like blue whales only eat krill. Does Krill just happen to contain everything they need? Or Pandas and eucalyptus leaves. I know cows occasional lick salt. Do those animals that we (mainly I ;) perceive to be single item eaters also snack on other items? But how does a blue whale, with very specialized eating habits, eat anything else? Side question: Does every animal need vitamin C? Scurvy must be horrible for an animal... submitted by /u/hombre74 [link] [comments]

Why does a magnet fall slowly when dropped down in a copper pipe? Posted: 25 Aug 2017 11:53 PM PDT submitted by /u/Landodrums [link] [comments]

How do flat moles form in the first place? Posted: 25 Aug 2017 11:32 AM PDT Flat moles that look like a blotch of black or brown ink on the skin. Those that cannot be felt by hand. How do these moles form in the first place? Is there any way to prevent new moles from growing near other moles? submitted by /u/therealquestionasker [link] [comments]

How does the fact that energy is quantized explain blackbody radiation? Posted: 25 Aug 2017 06:32 AM PDT submitted by /u/AmateurRaven [link] [comments]

Are we viewing the Sun's magnetic field in this picture of the recent solar eclipse? [Photo in comments section.] Posted: 25 Aug 2017 09:01 PM PDT Photo of Eclipsed Sun. I understand that you can't see magnetic field lines, but are the lines that are emanating from the top and bottom of the disk the result of the Sun's magnetic field interacting with charged particles? I'm assuming that charged particles in the corona are following the field lines while giving off heat. Since this is an infrared photo, I'm assuming that's why we see what appear to be field lines. submitted by /u/uninc4life2010 [link] [comments]

[Mathematics] Two distinct points are always colinear. Three distinct non-colinear points are always coplanar. Four distinct non-coplanar points always form the points of a tetrahedron. What can be said of 5 distinct points? Posted: 25 Aug 2017 05:37 PM PDT Apologies if the question doesn't seem clear. What structure can be formed by five distinct points (in 3 dimensions or higher) which don't all lie on the surface of a tetrahedron? submitted by /u/IlanRegal [link] [comments]

Why can't dogs eat certain foods like chocolate? Posted: 25 Aug 2017 06:41 PM PDT submitted by /u/bigboycory [link] [comments]

Does the total eclipse affect animal behavior? If so, what does it change? Posted: 25 Aug 2017 12:48 PM PDT submitted by /u/HeyUBd [link] [comments]

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