What is the physical difference in the brain between an objectively intelligent person and an objectively stupid person?

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• What is the physical difference in the brain between an objectively intelligent person and an objectively stupid person?
• Why does paper turns transparent when i smear fat/oil over it?
• How would our understanding of physics (or more specifically E&M) change if we found a magnetic monopole?
• If the moon or a big asteroid were to crash directly into the earth, what would happen to the other side of the earth that didn't receive the impact?
• Was the theory of infinitesimals proven true?
• If visible light is photons, then is all electromagnetic radiation photons? If so, why does its wavelength give the photons certain properties (e.x. harmful to humans, visible, can pass through matter)?
• Are there any indications that there are elements beyond the 118 we have currently discovered or synthesized? If so, is there any indication that there is a finite number of elements, other than their increasingly short halflives?
• How holes and electrons in the diode gets back to their original position when it is turned off?
• [Physics] How is the sound of moving water created? Do different liquids have specific different "wet" sounds? What factors determine how do they sound like?
• Are we--and all multicellular life--just giant biological synergies between our cells?
• Why is sustained attention span limited to about 20 minutes?
• What the smallest movement that the human eye can detect? Could a human eye perceive 1.5 arc seconds of movement under ideal conditions? What could it detect?
• How does a spider retract its web?
• Is it possible for there to be tiny (let's say basketball sized) Suns or even tiny solar systems in the universe?
• Why are the pressure and volume of a gas inversely related while either one of their relationships with temperature is linear?
• Is there a way to accurately measure amounts of endorphins in the human brain?
• What variables produce colorful sunsets? Are beautiful sunsets predictable?
• What's the fastest growing tissue in the human body?
• Does boiling water by lowering atmospheric pressure sanitize water?
• Why are sympathetic chain ganglion (and associated nervous tissue) on the outside of the vertebrae, why don't they get the protection that the CNS gets?
• How did the pressure of earth's atmosphere during past eras compare to that of today?
• How do scientists statistically prove cause and effect?
• Would I float in wet cement?

What is the physical difference in the brain between an objectively intelligent person and an objectively stupid person? Posted: 24 Jul 2016 06:20 AM PDT Does it have to do with connections of neurons in the brain? submitted by /u/flaminghotcheetos123 [link] [comments]

Why does paper turns transparent when i smear fat/oil over it? Posted: 24 Jul 2016 06:31 AM PDT submitted by /u/Ardubegino [link] [comments]

How would our understanding of physics (or more specifically E&M) change if we found a magnetic monopole? Posted: 23 Jul 2016 11:51 PM PDT submitted by /u/louieg888 [link] [comments]

If the moon or a big asteroid were to crash directly into the earth, what would happen to the other side of the earth that didn't receive the impact? Posted: 24 Jul 2016 06:28 AM PDT Would people get launched right off the ground or something totally different? submitted by /u/Cyanide814 [link] [comments]

Was the theory of infinitesimals proven true? Posted: 23 Jul 2016 10:07 PM PDT I understand that this concept is the building block of calculus, but was it simply an "almost true" concept used to understand calculus, or did it become a fundamental truth because of calculus? I could also be framing this question in a horrendously incorrect fashion, because I have only elementary mathematical education. submitted by /u/taehyun778 [link] [comments]

If visible light is photons, then is all electromagnetic radiation photons? If so, why does its wavelength give the photons certain properties (e.x. harmful to humans, visible, can pass through matter)? Posted: 23 Jul 2016 07:15 PM PDT submitted by /u/ThyFluffyOne [link] [comments]

Are there any indications that there are elements beyond the 118 we have currently discovered or synthesized? If so, is there any indication that there is a finite number of elements, other than their increasingly short halflives? Posted: 23 Jul 2016 03:06 PM PDT As a layperson, I would assume that one could just continually add more protons and neutrons to continually make new elements, but I'm not sure about the physics or any limitations related to that. If I'm right, then I assume the only difficulty is stabilizing the samples long enough for a confirmation, as I know that the last few elements we synthesized had incredibly short halflives. Are there any OTHER limitations to the atomic number of an atom? Will the periodic table ever be done? And are there any ways to forcefully stabilize atoms that would allow us to push farther? submitted by /u/nathanpaulyoung [link] [comments]

How holes and electrons in the diode gets back to their original position when it is turned off? Posted: 23 Jul 2016 08:56 PM PDT When diode is turned on the holes and electrons gets mixed that is the holes will also appear largely on the n side and electrons also appears on the p side but when turned off how electrons and holes get separated as p and n side with same as when it is not connected. Practicals explanation please submitted by /u/Balaeraivan [link] [comments]

[Physics] How is the sound of moving water created? Do different liquids have specific different "wet" sounds? What factors determine how do they sound like? Posted: 24 Jul 2016 05:33 AM PDT Imagine a largish pool of water (or some other liquid) which is still and you submerge your palm in it and slosh it around a bit, making that wet noise. What exactly is making that? submitted by /u/Fun1k [link] [comments]

Are we--and all multicellular life--just giant biological synergies between our cells? Posted: 24 Jul 2016 01:22 AM PDT I mean, there isn't really anything that makes our cells any more special than bacteria, as far as I'm aware. Is it possible that complex life just originated from a few cells suddenly finding out that it is easier to reproduce when attached to different cells? Edit: not even sure that synergy is the exact phrase I'm looking for, just couldn't be bothered to search for the right one. submitted by /u/NitzanLeo [link] [comments]

Why is sustained attention span limited to about 20 minutes? Posted: 23 Jul 2016 01:15 PM PDT I've noticed it myself as well that it's so much harder to increase how long one can maintain peak concentration than to increase the intensity of said concentration. What happens at 20 minutes that most adults are limited to a 20 minute sustained attention span? submitted by /u/Josent [link] [comments]

What the smallest movement that the human eye can detect? Could a human eye perceive 1.5 arc seconds of movement under ideal conditions? What could it detect? Posted: 23 Jul 2016 01:30 PM PDT I'm curious about the question of parallax in nearby stars. The parallax of the nearest visible star is 0.77 arc second. That means that every six months or so Alpha Centauri moves twice that (1.54 arc second) accross the sky relative to other stars close to it in the sky. An arc second is one part in 3600 of one degree. That seems really small. Six months is a long time. I don't know what "ideal" conditions for detecting movement are but I presume the time units are smaller than months. If I place two LEDs a meter apart and stand a kilometer away, moving one far enough to make a degree of movement across my field of vision means moving it 17m. That feels like it would be possible to detect - we can easily see a semi at that distance. Moving the LED enough to make 1.5 arc seconds of movement accross my field of view means moving it 7.5mm ((1.54*2*pi*1000m)/(360*3600)) that seems too small to detect. submitted by /u/bunabhucan [link] [comments]

How does a spider retract its web? Posted: 23 Jul 2016 02:12 PM PDT When a spiders retracts or climbs up a strand of its web. What happens to the web? Does it climb up its web and digest the web? Does it spool itself up with web? What happens? Can't find anything that answers this clearly on the web (heh). submitted by /u/iasmatt [link] [comments]

Is it possible for there to be tiny (let's say basketball sized) Suns or even tiny solar systems in the universe? Posted: 23 Jul 2016 06:41 PM PDT I know they wouldn't be observable, so there's no definitive "yes there is" answer, but is there any reason there couldn't be a basketball sized sun? Perhaps even briefly (compared to larger Suns)? Based on current understanding. submitted by /u/TurangaLeelaFry [link] [comments]

Why are the pressure and volume of a gas inversely related while either one of their relationships with temperature is linear? Posted: 24 Jul 2016 06:09 AM PDT Also a related question: It seems like when the number of moles of a gas changes but both pressure and volume are not restricted, the pressure and volume will both change at the same rate. Is this correct? If so, is there an intuitive explanation for why this is the case? submitted by /u/throwaway146587 [link] [comments]

Is there a way to accurately measure amounts of endorphins in the human brain? Posted: 24 Jul 2016 05:36 AM PDT Is there a way to accurately measure and quantify specific amounts of endorphins that are released in the human brain? Specifically, I am woundering about endorphins that are released from a painful or traumatic experiences, if that helps narrow anything down. I know one way to do this would be to use a PET machine, but are there other more accurate ways to measure this type of thing? submitted by /u/thewiscojoker [link] [comments]

What variables produce colorful sunsets? Are beautiful sunsets predictable? Posted: 24 Jul 2016 05:29 AM PDT What variables produce colorful, dramatic sunsets? Are beautiful sunsets predictable the way rain or storms are? We seem to get nice ones after rain. Why is that? submitted by /u/Mens_provida_Reguli [link] [comments]

What's the fastest growing tissue in the human body? Posted: 24 Jul 2016 05:23 AM PDT submitted by /u/KongeriketNorge [link] [comments]

Does boiling water by lowering atmospheric pressure sanitize water? Posted: 23 Jul 2016 01:56 PM PDT We all know that you can sanitize water by adding heat and boiling it. Does the same ring true if the boiling it caused by a lowered atmospheric pressure? submitted by /u/Whatever1234567891 [link] [comments]

Why are sympathetic chain ganglion (and associated nervous tissue) on the outside of the vertebrae, why don't they get the protection that the CNS gets? Posted: 24 Jul 2016 04:11 AM PDT Why did they evolve this way? How are they protected? submitted by /u/chazwazer69 [link] [comments]

How did the pressure of earth's atmosphere during past eras compare to that of today? Posted: 24 Jul 2016 12:21 AM PDT A friend and I were wondering why aquatic mammals can grow so big, which led to the same question for dinosaurs. I had heard that ancient atmospheres were denser than our current atmosphere, but this seems to be something of a myth. Can anyone shed some light on how the earth's atmospheric pressure has changed over time? submitted by /u/Versepelles [link] [comments]

How do scientists statistically prove cause and effect? Posted: 24 Jul 2016 02:56 AM PDT Is there some formula that proves all confounding variables are irrelevant and one particular direct variation between two variables proves cause and effect? If there isn't some clearly defined line, how much is "good enough" to claim cause and effect? submitted by /u/CallMeAladdin [link] [comments]

Would I float in wet cement? Posted: 24 Jul 2016 02:25 AM PDT Just trying to settle a debate I'm having at 4am. Roommate's convinced you'd sink to the bottom and can't swim/float up. submitted by /u/anonymousbear [link] [comments]

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Does the craving of different foods at different times have to do with what nutrients your body is currently in need of (protein vs carbs for example)?

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• Does the craving of different foods at different times have to do with what nutrients your body is currently in need of (protein vs carbs for example)?
• How do scientists achieve extremely low temperatures?
• How do we know the approximate temperature of distant objects, like planets and stars, as well as from a very long time ago?
• At what temperature do muscles operate optimally, and why?
• Why does sugary drinks heat faster than simple water in a microwave oven?
• For every action, there is an equal and opposite reaction. The universe is still expanding from the Big Bang, is it fair to say that it will some day contract and return to a homogeneous state with little to no empty space?
• How dense must a cloud be to completely obscure vision? What is the ratio of ppm to distance light travels through the cloud.
• If moving electrons produce changing electric field, and if changing electric field produces magnetic field, every electron must produce an electromagnetic wave. This means an atom in its natural state must emit light or other waves in electromagnetic spectrum. But why doesn't this happen?
• How can the sea level differ between the Atlantic and the Pacific (around Panama) since they are connected by the antarctic ocean?
• How long will it be until new maps will need to be made due to the continents moving?
• Carbon Trust: 'A photocopier left on overnight uses enough energy to produce over 1500 copies'. Am I missing something or is this utter rubbish?
• What does the airport security swab thing do and how does it work?
• [Engineering] If "fast charging" works by increasing amperage, then why can't we just keep increasing amperage to have a super fast charging device?
• Couldn't the same technology in a double-walled, vacuum-sealed bottle (like a Stanley or Yeti) be used for buildings, allowing for super efficient heating and cooling?
• Do Microwaves (The appliance) "heat up" or are they instantly as hot as they get?
• How much does an individual's DNA change over a lifetime?
• Does Cholesterol in cellular membrane possess any glycerol structure?
• Are flies more attracted to different colours than others?
• At very high gravities are thermobaric properties asymmetrical?
• Does Vitamix blending kills probiotics, enzymes or damages chlorophyll in raw whole plant foods?
• How do we know that vaccines work and are responsible for protecting against certain diseases?

Does the craving of different foods at different times have to do with what nutrients your body is currently in need of (protein vs carbs for example)? Posted: 22 Jul 2016 12:21 PM PDT submitted by /u/AyyBodyFrizzesAlone [link] [comments]

How do scientists achieve extremely low temperatures? Posted: 23 Jul 2016 07:10 AM PDT From my understanding, refrigeration works by having a special gas inside a pipe that gets compressed, so when it's compressed it heats up, and while it's compressed it's cooled down, so that when it expands again it will become colder than it was originally. Is this correct? How are extremely low temperatures achieved then? By simply using a larger amount of gas, better conductors and insulators? submitted by /u/2Punx2Furious [link] [comments]

How do we know the approximate temperature of distant objects, like planets and stars, as well as from a very long time ago? Posted: 23 Jul 2016 07:32 AM PDT I was looking at this very interesting infographic about temperatures in the universe, and it listed objects such as the Boomerang nebula - which is 5000 light years away - as well as the universe at 10-35 seconds old. How can scientists calculate the temperature of stars and nebulae from so far away, and how can they calculate the temperature of the universe from so long ago? submitted by /u/plasmapuadenas [link] [comments]

At what temperature do muscles operate optimally, and why? Posted: 23 Jul 2016 01:32 AM PDT submitted by /u/peppigue [link] [comments]

Why does sugary drinks heat faster than simple water in a microwave oven? Posted: 23 Jul 2016 07:20 AM PDT submitted by /u/Zangheri [link] [comments]

For every action, there is an equal and opposite reaction. The universe is still expanding from the Big Bang, is it fair to say that it will some day contract and return to a homogeneous state with little to no empty space? Posted: 23 Jul 2016 07:02 AM PDT Title says it all, but is it too expanded to return to its original state? Thanks! submitted by /u/bleachworthy [link] [comments]

How dense must a cloud be to completely obscure vision? What is the ratio of ppm to distance light travels through the cloud. Posted: 22 Jul 2016 12:09 PM PDT This is a smaller part of a larger hypothetical question I am trying to work through. There is a lead box that is missing one of its six sides buried underground. The open face of the box is the part that is deepest underground. Superman can look through anything that is not lead. Superman would logically fly partially around the earth until he had an oblique enough angle to peer straight through the earth and see the open underside of the box to determine what is inside. Here is the question. How much of the earths crust would need to be in supermans way before he could NOT see through it because the cumulative number of lead particles he is trying to look through is too much, the way that normal humans can see through a little bit of water vapor but cannot see through a large cloud Once I have an algorithm for (X) ppm multiplied by (X) distance I can plug it into the numbers I pulled from geological survey papers. Top soil in the US has an average of 10 ppm of lead and a range of 7 to 20 ppm The Crust has an average of 15 ppm with a range of 1 to 30 The Mantle has a mere 0.185 ppm After I have figured out the appropriate distance through the earth I am going to have to figure out some geometry for how deep the box must be buried. This Cloud problem has really derailed me. Any help you can offer would be greatly appreciated. submitted by /u/atlasonholiday [link] [comments]

If moving electrons produce changing electric field, and if changing electric field produces magnetic field, every electron must produce an electromagnetic wave. This means an atom in its natural state must emit light or other waves in electromagnetic spectrum. But why doesn't this happen? Posted: 22 Jul 2016 10:02 AM PDT submitted by /u/imemyself03 [link] [comments]

How can the sea level differ between the Atlantic and the Pacific (around Panama) since they are connected by the antarctic ocean? Posted: 22 Jul 2016 01:03 PM PDT submitted by /u/Moon_ire [link] [comments]

How long will it be until new maps will need to be made due to the continents moving? Posted: 23 Jul 2016 12:28 AM PDT submitted by /u/mangozombidude [link] [comments]

Carbon Trust: 'A photocopier left on overnight uses enough energy to produce over 1500 copies'. Am I missing something or is this utter rubbish? Posted: 22 Jul 2016 12:50 PM PDT All over my workplace there are the bog-standard 'reduce energy expenditure' posters, fairly standard these days. I was having a fairly slow day today and noticed one from the Carbon Trust that states 'A photocopier left on overnight uses enough energy to produce over 1500 copies'. "That sounds utterly ridiculous" I thought to myself, so I decided to look into it. This is the example they give: This fact is based on a mid-volume copier. In "sleep" mode this uses 51W and is on all day. Assume that the office is empty from 6pm to 8am = 14 hours. Then (51W x 14 hours) / 1000 = 0.714kWh In copy mode the machine uses 614W and produces 25 copies a minute (1/60=0.016667 hours). This is (614 x 0.016667) / 1000 = 0.010233kWh for 25 copies 0.714kWh / 0.010233 = 69.77199 69.7719 x 25(copies) = 1,744 copies could be produced overnight. This doesn't look remotely right to me... So I looked up the specs of our office copier (Ricoh, can't remember the model) and ran my own calculations: Power consumption: 1.6kW Sleep: 0.00088kW Warmup time: 55s Copy time: 6.7s Core hours for our office are 9am-5pm, this means 16 hours 'idle' time 5pm - 6am (note this is 2h longer than in their example!). 16h * 0.00088W = 0.01408kWh consumed overnight. The amount of copies produced in an hour for a continuous print job = (3600s - 55s) / 6.7s = 529 copies. In full operation the copier consumes 1.6kW, and therefore: 1.6kWh / 529 copies = 0.003024kWh/copy With the energy consumed overnight while 'idle' and the 'energy per copy' I can therefore work out that the actual number of copies that can be produced with the energy wasted overnight is in fact: 0.01408kWh / 0.003024kWh/copy = 4.656 copies A little less than the 1700 copies they quote! Have I done something horrendously wrong here, are they using outdated information or is this simply a campaign of misinformation? At best I figure they must have missed a decimal point in their sleep power usage... which would put their number at a more reasonable 17 copies... Everywhere you look online regarding energy saving in the office this value is quoted, and I simply can't wrap my head around where they obtained these values from. EDIT: Uhh I don't know if that's the most appropriate flair but I try :| submitted by /u/Nebbo_67 [link] [comments]

What does the airport security swab thing do and how does it work? Posted: 22 Jul 2016 03:46 PM PDT Just going through an airport now and was wondering what the swab thing does? The patch of white attached to a handle that they swab over your hands with. What exactly is it? edit: flaired "chemistry" but honestly I have no idea. submitted by /u/ricekurt [link] [comments]

[Engineering] If "fast charging" works by increasing amperage, then why can't we just keep increasing amperage to have a super fast charging device? Posted: 22 Jul 2016 04:30 PM PDT The title sums it up mostly. iPhones draw 1A when charging. iPads I believe draw 2.1A because they have bigger batteries. My Nexus 6P draws 3A and thus charges much faster than an iPhone. So why can't we just make a phone that draws, say 10A and charge in minutes? submitted by /u/MonkeysInABarrel [link] [comments]

Couldn't the same technology in a double-walled, vacuum-sealed bottle (like a Stanley or Yeti) be used for buildings, allowing for super efficient heating and cooling? Posted: 22 Jul 2016 01:28 PM PDT I feel this could work, with the right ventilation system. Are there reasons it wouldn't? Or does this already exist? submitted by /u/JoeKnowsNothing [link] [comments]

Do Microwaves (The appliance) "heat up" or are they instantly as hot as they get? Posted: 22 Jul 2016 04:06 PM PDT Would a Microwave be hotter or more powerful 5 minutes into cooking or is it the same from the beginning? submitted by /u/r3volc [link] [comments]

How much does an individual's DNA change over a lifetime? Posted: 22 Jul 2016 10:14 AM PDT All cells divide, except neurons. Each mitosis division requires error prone DNA replication, which in turn causes mutations. Considering things like shortening telomeres, UV radiation, and cancer, there are a lot of opportunities for an individual's DNA to change. How much does it change over a lifetime? submitted by /u/BoogieBear21 [link] [comments]

Does Cholesterol in cellular membrane possess any glycerol structure? Posted: 22 Jul 2016 08:48 PM PDT Is cholesterol composed of glycerol? submitted by /u/credditational [link] [comments]

Are flies more attracted to different colours than others? Posted: 22 Jul 2016 11:00 AM PDT TL;DR Do flies prefer to hang around certain colours? Why? So me and my father are camping in Lappland, Sweden and we have been eating our meals out in the wild by our tent. He has been eating and drinking in peace while I have been in a war with the flies. They all seem to LOVE my pink camping mug, and gather around it in groups while my father's mug have not had a single fly land on it. His mug is dark green. Is it because flies see my mug better in this environment, or is it because flies, just like me, love a little colourful touch to their daily lives? Answers with any kind of information is greatly appreciated so that my father and I can end our own speculations. EDIT: By following the link you will see a picture of my father's mug versus my mug. http://m.imgur.com/h3MV3We,h8xCoVb http://imgur.com/Bik0UGa submitted by /u/Glooten21 [link] [comments]

At very high gravities are thermobaric properties asymmetrical? Posted: 22 Jul 2016 06:13 PM PDT By the gods if I had the maths to avoid that word salad I would use it. I assume brownian motion for thermobaric forces, but far inside a gravity well, wouldn't the forces distribute quite differently? submitted by /u/FondOfDrinknIndustry [link] [comments]

Does Vitamix blending kills probiotics, enzymes or damages chlorophyll in raw whole plant foods? Posted: 22 Jul 2016 08:10 AM PDT I am wondering about damage on cell level that Vitamix may be causing while blending plant based foods. E.g. if I blend kombucha, spinach, or an apple -- will it kill probiotics in kombucha, damage chlorophyll in spinach, or kill enzymes in the apple? Thanks so much! I can't wait to read what you post. :) submitted by /u/MssDee [link] [comments]

How do we know that vaccines work and are responsible for protecting against certain diseases? Posted: 22 Jul 2016 12:14 PM PDT Anti-vaxxers always state there are no double blind randomized controlled trials. If that is true, then how do we know for sure that the vaccines are helping to protect against certain disease? submitted by /u/WiseShepherd [link] [comments]

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If Hexagons are the Most Efficient Way to Store Something in Two Dimensions, What is the Best For Three?

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• If Hexagons are the Most Efficient Way to Store Something in Two Dimensions, What is the Best For Three?
• How do mineral deposits like veins of ore form? Why don't elements mix homogeneously in the Earth's Mantle?
• How does the LIGO observatory compensate for all of the environmental factors i.e. storms, strong winds, human movement around the facility etc. ?
• How large can a cubic-single-room-style structure be, like NASA's vehicle assembly building?
• Do we find new rocks, minerals, crystals formed from recent volcanic eruptions? Why or why not?
• Can someone help me explain the science behind the boiling point of a liquid decreasing as the pressure does?
• How accurate is counting seconds between seeing lightning and hearing thunder?
• Why do dogs tilt their heads upwards as they howl?
• Does a baseball really travel farther in humid weather?
• What's the fastest speed sound can go?
• Why is Ecuador being consistently hit with earthquakes ever since the 7.8 earthquake on April 16?
• Efficiently calculating the volume and surface of complicated objects?
• How is gravitational potential energy calculated for heights at which the object's distance is such that the diminished effects of gravity aren't negligible?
• If Earth was split into two and the halves moved 100m apart, would they fall onto one another?
• Why can I use a propane stove indoors, but not a propane grill?
• How would a geochemist test the heavy metal levels of an area/substance in the late 1970s?

If Hexagons are the Most Efficient Way to Store Something in Two Dimensions, What is the Best For Three? Posted: 21 Jul 2016 06:24 PM PDT submitted by /u/DaKing97 [link] [comments]

How do mineral deposits like veins of ore form? Why don't elements mix homogeneously in the Earth's Mantle? Posted: 21 Jul 2016 01:34 PM PDT submitted by /u/superhelical [link] [comments]

How does the LIGO observatory compensate for all of the environmental factors i.e. storms, strong winds, human movement around the facility etc. ? Posted: 21 Jul 2016 03:05 PM PDT submitted by /u/Edgele55Placebo [link] [comments]

How large can a cubic-single-room-style structure be, like NASA's vehicle assembly building? Posted: 22 Jul 2016 06:24 AM PDT submitted by /u/ChunkyLaFunga [link] [comments]

Do we find new rocks, minerals, crystals formed from recent volcanic eruptions? Why or why not? Posted: 22 Jul 2016 12:44 AM PDT I always wondered why I only see obsidian like rocks, lava rocks etc near recent eruptions like in Hawaii. But why don't we find, gold, diamonds, granite, crystals etc, from cooled magma in recent eruptions? submitted by /u/paneling [link] [comments]

Can someone help me explain the science behind the boiling point of a liquid decreasing as the pressure does? Posted: 21 Jul 2016 10:58 PM PDT Sorry for poorly worded title. Looking to understand what is really happening there. submitted by /u/BlackKnightGlaive [link] [comments]

How accurate is counting seconds between seeing lightning and hearing thunder? Posted: 21 Jul 2016 01:02 PM PDT How accurate is counting seconds between seeing lightning and hearing thunder during a thunder storm to gauge the distance of the storm, and why does this work? submitted by /u/SatansWaffles [link] [comments]

Why do dogs tilt their heads upwards as they howl? Posted: 21 Jul 2016 07:51 AM PDT submitted by /u/Motha_Effin_Kitty_Yo [link] [comments]

Does a baseball really travel farther in humid weather? Posted: 21 Jul 2016 07:34 AM PDT I was listening to a Washington Nationals game and one of the players hit a ball all the way into the upper deck above right field. The announcers made a comment that because it was so humid that night the ball traveled farther. Is this actually true? And why would humidity have any impact on the distance traveled? submitted by /u/OrpheusAlarmClock [link] [comments]

What's the fastest speed sound can go? Posted: 21 Jul 2016 08:13 AM PDT Specifically, what temperature, medium, or any other factors that are relevant. Thanks! submitted by /u/LakersBeast22 [link] [comments]

Why is Ecuador being consistently hit with earthquakes ever since the 7.8 earthquake on April 16? Posted: 21 Jul 2016 08:53 AM PDT Ecuador suffered a major earthquake on April 16 and ever since then they have been constantly hit with them almost on a daily basis? Prior to that big on in April I didn't hear much about natural disasters like this in Ecuador. Since my family is from there i'm very curious/worried about why this continues to happen. Today there was another one (5.6) and it seems almost daily they are getting hit with earthquakes in or around the area of the 7.8 earthquake suffered on April 16. submitted by /u/bryansm1208 [link] [comments]

Efficiently calculating the volume and surface of complicated objects? Posted: 21 Jul 2016 09:18 AM PDT Hi there Is there an easy way of calculating the volume and surface of complicated/difficult/irregular objects? Objects that aren't similar to cubes, spheres, cylinders and the like. Thanks! submitted by /u/Katie_Deely [link] [comments]

How is gravitational potential energy calculated for heights at which the object's distance is such that the diminished effects of gravity aren't negligible? Posted: 21 Jul 2016 08:18 AM PDT submitted by /u/coalminnow [link] [comments]

If Earth was split into two and the halves moved 100m apart, would they fall onto one another? Posted: 21 Jul 2016 03:18 PM PDT Imagine you used a giant knife to cut the planet into two halves of the same size, how would gravity work? Would they fall or float in space? submitted by /u/Kanaxai [link] [comments]

Why can I use a propane stove indoors, but not a propane grill? Posted: 21 Jul 2016 05:58 AM PDT submitted by /u/PhatalFlaw [link] [comments]

How would a geochemist test the heavy metal levels of an area/substance in the late 1970s? Posted: 21 Jul 2016 08:03 AM PDT Would it be different then we do now, or would it be generally the same? I know it's kind of a mix between askscience/askhistorians, but I wanted to try here first because it is mostly a science question. Also, if I could expand upon it, what would be in the geochemists field kit in the 1970's if they were sent to study an unknown geochemical anomaly? submitted by /u/Devilock [link] [comments]

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