When did people realize that a whip crack was breaking the sound barrier? What did people think was causing that sound before then?

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• When did people realize that a whip crack was breaking the sound barrier? What did people think was causing that sound before then?
• Does an octopus have a dominant tentacle?
• Do we permanently blind deep sea creatures when we point spotlights at them in their natural habitat?
• If I stick my head out of a car window at 65 mph and try to look directly ahead I’m effectively blinded by the air rushing passed my eyes. How does a cheetah see and track prey when running at top speed?
• What was the Amazon like when the Sahara was green?
• How do computers allocate resources?
• In the event of an heart attack why is it an either or decision between thrombolysis and angioplasty? Why can't both be done at the same time or successively?
• When you recieve a blood donation, what happens to the DNA of the blood you recieved?
• Why do Tetanus shots hurt more than flu shots?
• If I have two devices (a remote and a flashlight, or whatever) each using two common AA/AAA/D batteries, but only one of them has 100% remaining useful battery power and the other one has 0%... Can I theoretically swap one battery in each device and increase the power of each device to 50% life?
• How do people who study fluid mechanics get accurate positional data on things like air and water?
• On a calculator, Square root of -1 gives you a math error, but -1 to the power of 1/2 gives you -1. Why is that?
• Why does your mouth water when you're about to throw up? Wouldnt the increased saliva make nausea worse?
• Is all space expanding the same everywhere?
• Is tree bark an ancestral trait in Gymnosperms and Angiosperms or did both species evolve it separately?
• why do hiccups occur?
• Since there is a limited amount of energy in the Universe, isn't there a maximum max temperature?
• How did where the land meets the sea in Ireland result in cliffs and not beaches like everywhere else?
• I know that through evolution one species can become another species, but at what point does one species turn into another?

When did people realize that a whip crack was breaking the sound barrier? What did people think was causing that sound before then? Posted: 26 Mar 2019 02:07 AM PDT submitted by /u/diald4dm [link] [comments]

Does an octopus have a dominant tentacle? Posted: 25 Mar 2019 02:52 PM PDT submitted by /u/bluecoloredlenses [link] [comments]

Do we permanently blind deep sea creatures when we point spotlights at them in their natural habitat? Posted: 25 Mar 2019 03:46 PM PDT Basically as above. Got me thinking whilst watching Blue Planet. Some creatures appear not to have 'eyes' (at least in the classical sense), so perhaps they use other senses for survival, navigation, etc, and therefore aren't affected. On the other hand, surely shining a light from an ROV or manned submersible, even of low luminosity/brightness/whatever, at creatures who possess some kind of vision would immediately blind them and thus reduce their chances of survival to zero? submitted by /u/-drmw- [link] [comments]

If I stick my head out of a car window at 65 mph and try to look directly ahead I’m effectively blinded by the air rushing passed my eyes. How does a cheetah see and track prey when running at top speed? Posted: 26 Mar 2019 07:33 AM PDT submitted by /u/MJamesRead [link] [comments]

What was the Amazon like when the Sahara was green? Posted: 25 Mar 2019 02:31 PM PDT So the Amazon gets a lot of its nutrients from Saharan dust. I recall, however, that the Sahara undergoes periodic greening periods due to climatic changes, when dust would presumably be prevented from being kicked up by vegetation and relatively damp conditions. What happens to the Amazon during these periods? submitted by /u/InterplanetaryCyborg [link] [comments]

How do computers allocate resources? Posted: 26 Mar 2019 02:08 AM PDT If a computer is doing something in the background, say rendering video, and something in the foreground, say browsing the web, and the web browsing is lagging, why doesn't it automatically redirect resources to ensure that the foreground task is smooth, and devote only the excess resources to the background task? Or does it? How do computers allocate resources? submitted by /u/benjaminikuta [link] [comments]

In the event of an heart attack why is it an either or decision between thrombolysis and angioplasty? Why can't both be done at the same time or successively? Posted: 26 Mar 2019 04:07 AM PDT Non-native English speaker here. From what I understand, in the event of an ongoing heart attack the doctors must choose between thrombolysis or an angioplasty with stenting/PCI (PCI and Angioplasty are the same thing right?). But both cannot be done. So suppose someone is very far away from a hospital with angioplasty facilities. Why can't they be given thrombolysis first to save heart muscle and then when they reach the hospital after an hour they are treated with angioplasty with stents? Why does it have to be an either or decision? submitted by /u/Experimentalphone [link] [comments]

When you recieve a blood donation, what happens to the DNA of the blood you recieved? Posted: 25 Mar 2019 01:41 PM PDT submitted by /u/KusH_SpleXx [link] [comments]

Why do Tetanus shots hurt more than flu shots? Posted: 26 Mar 2019 07:31 AM PDT I get flu shots every year and seldom feel the shot as more than just a small jab and never feel any discomfort at the injection site afterward. I got a Tetanus (DTAP) shot yesterday and holy fuck does my arm hurt! The shot hurt going in and my deltoid hurts today. They appeared to be the same volume of "stuff" so I can't chalk it up to a larger injection volume. Any ideas? submitted by /u/sjvmi87 [link] [comments]

If I have two devices (a remote and a flashlight, or whatever) each using two common AA/AAA/D batteries, but only one of them has 100% remaining useful battery power and the other one has 0%... Can I theoretically swap one battery in each device and increase the power of each device to 50% life? Posted: 25 Mar 2019 03:59 PM PDT submitted by /u/saslumpff [link] [comments]

How do people who study fluid mechanics get accurate positional data on things like air and water? Posted: 25 Mar 2019 03:21 PM PDT I know there are things like pressure and motion sensors exist but I don't understand how someone might track the general flow of water in a tank. submitted by /u/EudaiGG [link] [comments]

On a calculator, Square root of -1 gives you a math error, but -1 to the power of 1/2 gives you -1. Why is that? Posted: 25 Mar 2019 07:19 PM PDT Root of 9 is 3, 9 to the power of 1/2 is 3. Root of 1 is 1, 1 to the power of 1/2 is 1. Root of -1 gives you an error, -1 to the power of 1/2 is -1. How come? submitted by /u/throwaway_8098 [link] [comments]

Why does your mouth water when you're about to throw up? Wouldnt the increased saliva make nausea worse? Posted: 25 Mar 2019 12:40 PM PDT submitted by /u/angelsgirl2002 [link] [comments]

Is all space expanding the same everywhere? Posted: 25 Mar 2019 10:03 AM PDT Is a cubic foot of interstellar space expanding the same as a cubic foot of intergalactic space? submitted by /u/Dls95405 [link] [comments]

Is tree bark an ancestral trait in Gymnosperms and Angiosperms or did both species evolve it separately? Posted: 25 Mar 2019 08:35 AM PDT I'm more of a human anatomy and health sciences fella but this made me curious. In my biology class we're on plant physiology. Gymnosperms and angiosperms are both seed bearing plants and both contain species which have bark. All gymnosperms, to my limited knowledge, have bark while there are many angiosperm trees as well. However, many angiosperms don't have bark. Did angiosperms evolve away from bark and to a fleshier stalk? submitted by /u/Lothken [link] [comments]

why do hiccups occur? Posted: 25 Mar 2019 03:11 PM PDT submitted by /u/Raman_M [link] [comments]

Since there is a limited amount of energy in the Universe, isn't there a maximum max temperature? Posted: 25 Mar 2019 11:05 AM PDT Title. submitted by /u/Dat_Peep [link] [comments]

How did where the land meets the sea in Ireland result in cliffs and not beaches like everywhere else? Posted: 25 Mar 2019 10:04 AM PDT submitted by /u/gocubsgo22 [link] [comments]

I know that through evolution one species can become another species, but at what point does one species turn into another? Posted: 25 Mar 2019 12:20 PM PDT I also don't know what flair to put, so I put chemistry submitted by /u/The-Beat-is-Fope [link] [comments]

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What’s that lump in your throat you get when you’re about to cry?

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• What’s that lump in your throat you get when you’re about to cry?
• Is there an example of a mathematical problem that is easy to understand, easy to believe in it's truth, yet impossible to prove through our current mathematical axioms?
• How do optometrists get prescription for babies?
• Why doesn't the west coast get any hurricanes or tropical storms?
• Just watched the Sixty Symbols video on LHC and that it has discovered one particle; Is there any major physics theories that it has categorically disproved?
• Why can other animals eat raw meat but humans can't?
• How do CPU instructions work at the hardware/electrical level?
• If I were to magically appear several hundred km above the planet with no orbital velocity, do I experience “weightlessness” or not?
• How has Jupiter's storm lasted for so long?
• Why do black holes have such strong gravitational fields ?
• If you were to wear a completely super hydrophobic body suit, and jump into a pool, would you repel all liquid and just go crashing down to the bottom?
• Why haven’t we found any preserved dinosaur bodies in oxygen-depleted environments similar to bog bodies? (Or have we?)
• If energy is never lost, how does the earth get rid of excess energy from the sun?
• A geologist was quoted by the BBC as saying "most of the major animal lineages were established in a singular event in the history of life, the Cambrian explosion". How true is this? Was the Cambrian explosion really an event? And did the lineages of all modern animals begin in the Cambrian?
• If a black hole sucks something in, Where does it go?
• How do lymphatics gain protein from blood?
• How do stickers "really work?"
• If you have a hypothetical quad-copter that has a 24 hour battery life, is unaffected by the elements and had a clear path. Would it be possible for it to make a full rotation of the Earth while hovering in one place?
• How do societies/cultures 'lose knowledge'?
• What are the bumps on a humpback whale for?
• Is there a photoelectric effect that applies to quarks or other small particles? (instead of electrons)
• How is the change in magnetic field due to spatial variation different from from motional emf?

What’s that lump in your throat you get when you’re about to cry? Posted: 24 Mar 2019 12:02 PM PDT submitted by /u/karenfromfinance_ [link] [comments]

Is there an example of a mathematical problem that is easy to understand, easy to believe in it's truth, yet impossible to prove through our current mathematical axioms? Posted: 25 Mar 2019 05:56 AM PDT I'm looking for a math problem (any field / branch) that any high school student would be able to conceptualize and that, if told it was true, could see clearly that it is -- yet it has not been able to be proven by our current mathematical knowledge? submitted by /u/Stuck_In_the_Matrix [link] [comments]

How do optometrists get prescription for babies? Posted: 24 Mar 2019 12:00 PM PDT Just saw the cutest post on r/wholesomegifs of a baby getting glasses and being able to see clearly for the first time. I see these posts often but I always wonder how they get the eyeglass prescription right for babies? Normally eye doctors ask you the "is 1 or 2 better" question 15 times but babies can't answer that answer that so how do optometrists get around that? Is there a method they use that gets the correct prescription or is there a way to tell if the baby is near or far sighted and they just go from there? submitted by /u/ScienceFreak7 [link] [comments]

Why doesn't the west coast get any hurricanes or tropical storms? Posted: 24 Mar 2019 05:03 PM PDT I've been living on the west coast for 18 years and had never had a problem with hurricane, but every fall the east coast always gets a storm. submitted by /u/DarthTroop [link] [comments]

Just watched the Sixty Symbols video on LHC and that it has discovered one particle; Is there any major physics theories that it has categorically disproved? Posted: 24 Mar 2019 08:00 AM PDT submitted by /u/Shelleen [link] [comments]

Why can other animals eat raw meat but humans can't? Posted: 24 Mar 2019 06:38 PM PDT submitted by /u/slinky12355 [link] [comments]

How do CPU instructions work at the hardware/electrical level? Posted: 25 Mar 2019 07:44 AM PDT Hi, /r/AskScience. Longtime reader, first time poster. I actually have a degree (well, a minor) in CS, but lately I've been getting very interested in the actual physics/electrical engineering involved in computers, particularly the CPU. As all things in CS are conducted at various levels of abstraction, I guess I never really thought much beyond high-level code -> machine code -> CPU instruction set -> logic gates -> back to memory, but now I'm having a hard time wrapping my head around just how this all works, electrically speaking. My question: how do the electrical signals that physically make up computer code/instructions actually come into being? In CS, we'd imagine executing our code and it would instantly appear in the memory stack, but that's leaving a lot of steps out, I feel. If anyone could help me better understand this phenomena at an electrical engineering level, I'd be very grateful. I guess I'm ultimately getting thrown for a loop (no pun intended) by the fact that there are no moving parts inside the CPU or RAM; I'm not actually changing anything other than the position of some electrons by "coding," and I'm not all too clear on how this process actually physically takes place. Thanks in advance. submitted by /u/upper_crust [link] [comments]

If I were to magically appear several hundred km above the planet with no orbital velocity, do I experience “weightlessness” or not? Posted: 24 Mar 2019 11:25 PM PDT I've seen multiple posts explaining that "weightlessness"'in space is a misconception, and that when we see astronauts in orbit, the apparent weightlessness comes from them being in freecall at 17,000 mph around the planet. Similar, there have been posts that say that the weightlessness that will be experienced by Blue Origin passengers is simply a side effect of being accelerated straight up and then the acceleration ceasing as the capsule enters a coast phase before accelerating back to earth. So my question is : if I was able to instantly appear 100km above the planet's surface with zero orbital velocity, would I experience normal 9.8 m/s/s towards earth and start falling? What if I appeared 200km high? 500km high? 1000km high? Did the Apollo astronauts heading to the moon in a coast phase (no acceleration) experience weightlessness or not? submitted by /u/ShuffleStepTap [link] [comments]

How has Jupiter's storm lasted for so long? Posted: 24 Mar 2019 05:02 PM PDT submitted by /u/WingsOfDeath99 [link] [comments]

Why do black holes have such strong gravitational fields ? Posted: 25 Mar 2019 12:29 AM PDT They are formed from a collapsed star core right? I always thought gravitational fields depended on mass not density, why doesn't this work for black holes? submitted by /u/rqwert2345 [link] [comments]

If you were to wear a completely super hydrophobic body suit, and jump into a pool, would you repel all liquid and just go crashing down to the bottom? Posted: 24 Mar 2019 10:35 PM PDT Always wondered this after watching videos of liquids bouncing off shoes and surfaces that were covered in those crazy waterproofing sprays. submitted by /u/Anti_Axis [link] [comments]

Why haven’t we found any preserved dinosaur bodies in oxygen-depleted environments similar to bog bodies? (Or have we?) Posted: 24 Mar 2019 10:14 AM PDT submitted by /u/kb583 [link] [comments]

If energy is never lost, how does the earth get rid of excess energy from the sun? Posted: 24 Mar 2019 08:42 PM PDT Why hasn't the earth gotten so hot that life ceases to exist? What protects the earth from absorbing all energy it gets from the sun and holding on to it? submitted by /u/coolgr3g [link] [comments]

A geologist was quoted by the BBC as saying "most of the major animal lineages were established in a singular event in the history of life, the Cambrian explosion". How true is this? Was the Cambrian explosion really an event? And did the lineages of all modern animals begin in the Cambrian? Posted: 24 Mar 2019 08:58 AM PDT submitted by /u/alcianblue [link] [comments]

If a black hole sucks something in, Where does it go? Posted: 24 Mar 2019 03:12 PM PDT submitted by /u/PapaStalinsGulag [link] [comments]

How do lymphatics gain protein from blood? Posted: 24 Mar 2019 04:40 PM PDT From what I understand proteins are too large to pass through the walls of capillaries. When tissue fluid enters the lymph vessel it does not contain protein. Where and how does it get into a lymph? submitted by /u/Meikayah_ [link] [comments]

How do stickers "really work?" Posted: 24 Mar 2019 03:31 PM PDT I'm wondering at a microscopic and molecular level. Do the glue molecules get locked in with whatever molecules make up the surface it comes into contact with, do they form bonds, share electrons, that sort of thing? submitted by /u/clearwall [link] [comments]

If you have a hypothetical quad-copter that has a 24 hour battery life, is unaffected by the elements and had a clear path. Would it be possible for it to make a full rotation of the Earth while hovering in one place? Posted: 24 Mar 2019 09:39 PM PDT submitted by /u/rob_dawg45 [link] [comments]

How do societies/cultures 'lose knowledge'? Posted: 24 Mar 2019 04:03 PM PDT The Greek and the Romans (and I'm sure other cultures too) seem to have had an amazing level of knowledge and wisdom in a wide variety of fields. They created things like the Baghdad Battery, the Antikythera Mechanism, special cements which helped create Aquaeducts that are still around millenia later. Also knowledge about astronomy, the human body and many other things I forgot about (pun bad, but intended). Many things took centuries to be re-discovered. How does this happen and what else might we have collectively forgotten over time? submitted by /u/st0pmakings3ns3 [link] [comments]

What are the bumps on a humpback whale for? Posted: 24 Mar 2019 09:07 AM PDT I've done a little research and have found out they are called turbicles. They are seemingly for hydrodynamic performance, however, It seems to me that they would be bad for streamlining . submitted by /u/brit-ish-beef [link] [comments]

Is there a photoelectric effect that applies to quarks or other small particles? (instead of electrons) Posted: 24 Mar 2019 08:54 AM PDT In school we study the absorption of photons by electrons and leaving the atom but could other smaller particles absorb photons like neutrinos and quarks? submitted by /u/Lucas_The_Man [link] [comments]

How is the change in magnetic field due to spatial variation different from from motional emf? Posted: 24 Mar 2019 12:34 PM PDT Consider the case where a wire is moving in a magnetic field, the source of the magnetic field can either be the loop itself(rail) or an externally applied one (magnet). If the conductor where to move, the induced emf would simply be the change in flux, which simplifies to ε = -vBL for motional emf where the charges experience a magnetic force on them. However, if the loop was stationary. And the magnetic field source were to move causing two effects: Change in magnetic field due to it's strength changing. Change in magnetic field due to it's motion , spatial change. If both effects were occurring this equation can represent it. How is the second term, only exclusive to the change in magnetic field and not considered to be similar to motional emf? submitted by /u/tinkenieer [link] [comments]

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Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States

How do you grow seedless grapes of you don’t get any seeds from them ?

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• How do you grow seedless grapes of you don’t get any seeds from them ?
• Does dark energy actually exert a force? Is it actually energy?
• What does blood type affect in the function of the human body other than determining which blood types can be received and donated to?
• How does your stomach know when to stop digesting food and move it into the small intestine?
• What is the smallest organism capable of learning?
• When going gray, does hair grow as gray hair or does hair lose its color?
• What would happen if a positron and proton collide or electron and anti-proton? What happens if you introduce a neutron in the mix?
• Why is your voice changing during the puberty,how does changing function and around what age the voice is fully changed?
• When our pupils dilate, what's the iris doing? Where does the colour "go"?
• Does the lethal dose scale linearly even for very fat people?
• How do physicists measure that photon has zero rest mass?
• Are there any female animals that can delay or suppress ovulation or sexual maturity in insuitable environments?
• Has anyone ever witnessed a star death ?
• How does aluminium chloride stop sweat?
• Can dogs appreciate music?
• What physical limits exist on the sending and receiving of digital data? How quickly can discrete bits be pushed and received before they are no longer discrete?
• What are some potential life hosting places in our solar system and how long will it most likely be until we are able to send something to those areas to look for life?
• This is probably common knowledge amongst earth science folk but how does water become salty? Is it a myth that all rivers / lakes / creeks eventually lead to the ocean?
• Does sugar/sugary sweets directly cause rotting/decay of our teeth?
• What is that "thud" sound that lights make when they are turned on?
• Is it possible to generate a neutrino beam using an electron beam?
• How much energy does an average post on social media take?

How do you grow seedless grapes of you don’t get any seeds from them ? Posted: 23 Mar 2019 12:13 PM PDT How do you grow seedless grapes of you don't get any seeds from seedless grapes? Where do the seeds come from ? submitted by /u/Slithery_0 [link] [comments]

Does dark energy actually exert a force? Is it actually energy? Posted: 24 Mar 2019 03:38 AM PDT Been reading about this recently and I'm a little confused as to how it's supposed to work. If every point is expanding from every other point, how can any quantifiable value of force be determined for it? If it's actually antigravity -something like negative mass particles appearing with vacuum energy and annihilating or whatever- doesn't that break causality because negative mass allows stuff like building FTL drives? Articles also say it's a force being exerted on the fabric of the universe itself, but is that quantifiable too? Is there a type of energy you can exert that actually does that? submitted by /u/saramiie [link] [comments]

What does blood type affect in the function of the human body other than determining which blood types can be received and donated to? Posted: 23 Mar 2019 11:55 AM PDT submitted by /u/Cs1999 [link] [comments]

How does your stomach know when to stop digesting food and move it into the small intestine? Posted: 23 Mar 2019 11:00 AM PDT submitted by /u/TheOber [link] [comments]

What is the smallest organism capable of learning? Posted: 23 Mar 2019 06:45 AM PDT From my understanding most microbes interact with their environment but are not capable of pattern recognition or learning based on experience. They simply react as they were programmed to by their DNA. Mice can be taught to run mazes. I want to know what is the smallest creature that has been shown to have intelligence or learning capabilities. submitted by /u/Otterchaoss03 [link] [comments]

When going gray, does hair grow as gray hair or does hair lose its color? Posted: 24 Mar 2019 05:21 AM PDT submitted by /u/xmCm [link] [comments]

What would happen if a positron and proton collide or electron and anti-proton? What happens if you introduce a neutron in the mix? Posted: 24 Mar 2019 06:21 AM PDT Would it behave the same as an ion? or would they just repel each other no matter how much force you use to keep them together? Say you include a neutron would that allow the now 3 particles to form 1 exotic particle? submitted by /u/johnminton [link] [comments]

Why is your voice changing during the puberty,how does changing function and around what age the voice is fully changed? Posted: 24 Mar 2019 05:58 AM PDT Why is your voice changing during the puberty,how does changing function and around what age the voice is fully changed? submitted by /u/ugandan_yobungus [link] [comments]

When our pupils dilate, what's the iris doing? Where does the colour "go"? Posted: 23 Mar 2019 08:38 AM PDT submitted by /u/behind-these-eyes [link] [comments]

Does the lethal dose scale linearly even for very fat people? Posted: 24 Mar 2019 04:37 AM PDT Lethal dose is usually given as per body weight. My question is, if I eat a lot now, get really fat and double my weight, is 'my' lethal dose now twice as high? submitted by /u/GermanAaron [link] [comments]

How do physicists measure that photon has zero rest mass? Posted: 23 Mar 2019 09:00 AM PDT submitted by /u/hungteoh123 [link] [comments]

Are there any female animals that can delay or suppress ovulation or sexual maturity in insuitable environments? Posted: 24 Mar 2019 01:07 AM PDT As the title says, I'm sure I heard/read/saw somewhere that some animals won't go into heat or ovulate or mature sexually if the external environments are unsuitable, such as no suitable breeding males, insufficient food or other issues. If so, is there a term for this suppressed ovulation or delayed sexual maturity? submitted by /u/FarewellMyQueen [link] [comments]

Has anyone ever witnessed a star death ? Posted: 23 Mar 2019 12:07 PM PDT I understand the time difference of how long it takes light to come to Earth from stars, galaxies, and other wonders of the night sky. Has there ever been a recorded time when someone just so happened to be looking in the right place at the right time and has seen that light stop ? In essence, watching a star die. submitted by /u/rru96 [link] [comments]

How does aluminium chloride stop sweat? Posted: 23 Mar 2019 07:12 AM PDT I know it combines with the sweat but is it a reaction of sorts? submitted by /u/cornwallm3 [link] [comments]

Can dogs appreciate music? Posted: 23 Mar 2019 07:08 AM PDT This is one that's been on my mind a lot lately. So I play piano and whenever I play, my dog wouldn't leave the room or anything, would just sit there and sometimes even comes in while I'm playing. I find it strange as if there is any erratic, unusual noise like a loud piano note she is fine but if I watch rugby and shout or any other loud noise she would leave the room. It would be the same if I'm listening to loud music. I'm just wondering if that's just something to do with her being able to tell the mood of the situation or if she has an appreciation for music or is neutral with it, super confused please help. submitted by /u/ansomenes [link] [comments]

What physical limits exist on the sending and receiving of digital data? How quickly can discrete bits be pushed and received before they are no longer discrete? Posted: 23 Mar 2019 07:42 AM PDT It seems like there is a high upper limit to how much data can be transmitted simply by adding channels and increasing bandwidth, but wouldn't the harder, lower limit be on how quickly pulses can be generated/received whilst remaining intelligible? submitted by /u/RockleyBob [link] [comments]

What are some potential life hosting places in our solar system and how long will it most likely be until we are able to send something to those areas to look for life? Posted: 23 Mar 2019 08:03 PM PDT submitted by /u/Aidanmartin3 [link] [comments]

This is probably common knowledge amongst earth science folk but how does water become salty? Is it a myth that all rivers / lakes / creeks eventually lead to the ocean? Posted: 23 Mar 2019 07:24 PM PDT submitted by /u/jonhon2 [link] [comments]

Does sugar/sugary sweets directly cause rotting/decay of our teeth? Posted: 23 Mar 2019 05:01 AM PDT Or does it just feed the biofilms in our mouth that cause rotting? submitted by /u/Hodgki [link] [comments]

What is that "thud" sound that lights make when they are turned on? Posted: 23 Mar 2019 05:18 AM PDT I have seen it only in movies, Is it even real? submitted by /u/ravypmr [link] [comments]

Is it possible to generate a neutrino beam using an electron beam? Posted: 23 Mar 2019 12:03 PM PDT I know that using a proton beam is the standard, but would it be theoretically possible to somehow do it via electrons instead, using other interactions? submitted by /u/mrkovaltski [link] [comments]

How much energy does an average post on social media take? Posted: 23 Mar 2019 09:42 PM PDT This is more about the amount of energy the servers that belong to these companies (Facebook, Twitter, YouTube, Reddit, Instagram) take to store and retrieve a post. If there are estimates which include energy expenditure on clients' devices too, that would be nice. I realize that each of these platforms have different types of posts which would probably account for most of the difference in energy expenditure (an average YouTube video probably takes more energy than an average tweet). Nevertheless, I thought it'd be interesting to know how our content on social media is adding up to our carbon footprint. And should we be worried that some of this footprint is not insignificant, that we might probably be better off not posting? I also realize the irony of making this post, but i guess curiosity got the better of me. submitted by /u/bowdangatip [link] [comments]

You are subscribed to email updates from AskScience: Got Questions? Get Answers.. To stop receiving these emails, you may unsubscribe now.	Email delivery powered by Google
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