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Friday, June 7, 2019

What are the tiny triangular creases on your skin called?

What are the tiny triangular creases on your skin called?


What are the tiny triangular creases on your skin called?

Posted: 06 Jun 2019 07:30 PM PDT

So if you look close, like I mean REAL close at your skin's surface, such as your arm for instance, you'll see this mural-like pattern of triangles. I suppose these are creases to allow the skin to be more flexible. Anyone know what these triangles/creases are called?

submitted by /u/GSdragon
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Is the Chernobyl explosion different from a Nuclear warhead test w.r.t to the nuclear radiation it emits?

Posted: 07 Jun 2019 05:26 AM PDT

What does the '+' sign in specific saccharide nomenclatures mean?

Posted: 07 Jun 2019 03:06 AM PDT

For example D-(+)-Galactose. I know D/L define which stereoisomere of the bottom most chiral point (in acyclic form) it is and α/β means the orientation of the first OH functional group on the anomeric carbon in cyclic form but the + evades me.

Thanks in advance.

submitted by /u/FeistyBananaSplit
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What happens to the body/brain when someone is under hypnosis? Is it a real state of mind, or is it power of influence?

Posted: 06 Jun 2019 09:52 PM PDT

I have wondered about this since I was a university student. I've taken many psychology classes and different courses studying the human mind and hypnosis has always interested me but I also think it could be just the 'power of influence' or something similar. I have even tried to let myself be hypnotized on 2 separate occasions, but, I was told I might not be susceptible to hypnosis. So that has made me skeptical whenever I further read or observed someone being "hypnotized" for an intensive psychology session, or even on stage in a hypnotist/mentalist show. Is it real and what happens to the mind/body if someone can be successfully hypnotized?

Edit spelling

submitted by /u/Bigreddog19
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How many chicks can a chicken have?

Posted: 06 Jun 2019 11:35 AM PDT

I have chickens and they lay (generally) eggs once a day. If I had a rooster would the rooster just keep fertilizing the eggs and the chicken keep laying them? Is there a point where the chicken/rooster just says "fuck this" and stop?

submitted by /u/oofive2
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Is there a limit to the height a mountain can reach? Conversely, is there a limit to the depth a natural trench can reach?

Posted: 07 Jun 2019 03:42 AM PDT

If a laser can impart momentum to a light sail, does it mean it has recoil?

Posted: 06 Jun 2019 01:32 PM PDT

Using space-based lasers to accelerate (or decelerate) ships is a near-future tech that's often taken as granted by futurists.

It sure sounds awesome, but if it can impart momentum doesn't that mean that it will be submitted to some sort of recoil? Would they need to carry chemical fuel or have a backwards-shooting laser to compensate?

If so, is it a significant challenge to manage, or pretty easy once you already have high-power lasers in space?

submitted by /u/Sbajawud
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Why does earth’s rotation not slow down from tidedal forces?

Posted: 06 Jun 2019 02:25 PM PDT

Of course it requires energy to move all this water around... where is this coming from? Something must be slowing down... somewhere?

submitted by /u/laupyluke
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Are modern farms in the US now "soil stable," or do we still lose more topsoil per year than we build?

Posted: 06 Jun 2019 04:00 PM PDT

Erosion of agricultural land was a huge issue in the US before WWII. The Dustbowl was a huge issue, but even before that, a lot of farms became heavily degraded.

What's the current situation? Are we still losing more soil than we're building? Is this a sustainable situation?

submitted by /u/RusticBohemian
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Radiometric Dating: How do we know the parent:daughter isotope ratio was initially 100:0?

Posted: 06 Jun 2019 08:23 PM PDT

A few simple questions about radiometric dating:

  1. Am I correct to believe that scientists assume the parent:daughter ratio is initially about 100:0 upon the death of an animal or formation of a rock?
  2. Has this assumption been experimentally tested for carbon dating in regards to what the ratio is when an animal dies?
  3. Has this assumption been experimentally tested for other types of radiometric dating in regards to what the ratio is when a rock forms?

I would gladly take articles about the last two questions with open arms if people could point me in the right direction. Thank you.

submitted by /u/DasIstWangernumb
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Does the availability of Narcan (naloxone) encourage opioid use?

Posted: 06 Jun 2019 05:10 PM PDT

How accurate was the 'cause of explosion' presentation given by Valery Legasov (Jared Harris) in the final episode of Chernobyl?

Posted: 06 Jun 2019 10:18 AM PDT

Which aspects are technically accurate? Which were over-simplified?

submitted by /u/jull1234
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What kind of planetary/solar configuration would cause the random, long winters in Game of Thrones?

Posted: 06 Jun 2019 01:15 PM PDT

Why is the symbol for internal energy ΔU and not something like ΔI? What does the "U" stand for?

Posted: 06 Jun 2019 09:56 AM PDT

How can a virus like hpv eventually work itself out of the system, but a virus like hsv cannot?

Posted: 06 Jun 2019 08:53 AM PDT

What is the difference between these two types of viruses that makes one impossible to get rid of, but not the other?

submitted by /u/FrozenPea123
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Why are volcanic eruptions often followed by lightning?

Posted: 06 Jun 2019 02:00 PM PDT

Is there a chemical you can spontaneously inject into the muscle tissue and have someone immediately pass out like Hollywood shows?

Posted: 06 Jun 2019 02:53 AM PDT

I thought for an intravenous injection to work/have rapid onset it had to be... intravenous?

submitted by /u/princess-kelly
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Why does inhaling helium make your voice sound higher?

Posted: 06 Jun 2019 11:02 AM PDT

Are mosquitoes, fleas, ticks, or any other creatures that feed on human blood affected by carcinogens, caffeine, or anything else that we put into our body?

Posted: 06 Jun 2019 02:55 AM PDT

Does cherenkov radiation slow down the beta particles?

Posted: 06 Jun 2019 08:27 AM PDT

I've always seen cherenkov radiation analogous to a sonic boom. And in a sonic boom, there's air resistance to slow down the object and that's why it creates a sound at all. But for beta particles emitting cherenkov radiation, does the photon emitted reduce the speed of the beta particle, like in Bremsstrahlung radiation?

submitted by /u/Raiden60
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How to these pictures which show how objects distort spacetime make any sense?

Posted: 06 Jun 2019 02:13 PM PDT

https://i.stack.imgur.com/sXO2u.png In this image, the sun is sinking in a flat plane. I just don't understand how this image makes any sense though, as space is 3D. This model wouldn't work if the planets were orbiting on a vastly different plane, and I think it would get more confusing if you looked at the gravity of things on earth. Objects don't influence other objects gravitationally only on one plane.

submitted by /u/Flipdip35
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Thursday, June 6, 2019

AskScience AMA Series: I'm Seth Shostak, Senior Astronomer at the SETI Institute and host of Big Picture Science, and I'm looking for aliens. AMA!

AskScience AMA Series: I'm Seth Shostak, Senior Astronomer at the SETI Institute and host of Big Picture Science, and I'm looking for aliens. AMA!


AskScience AMA Series: I'm Seth Shostak, Senior Astronomer at the SETI Institute and host of Big Picture Science, and I'm looking for aliens. AMA!

Posted: 06 Jun 2019 04:00 AM PDT

For nearly 60 years, scientists have been using sophisticated technology to find proof of cosmic companions. So far, they've not turned up any indications that anyone is out there. What, if anything, does that mean? And what are the chances that we will trip across some other galactic inhabitants soon... or ever?

I will be on to answer your questions at 11am (PT, 2 PM ET, 18 UT). AMA!

Links:

EDIT: Please note the corrected time at which our guest will be joining us.

submitted by /u/AskScienceModerator
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What technological advancement would make Thermoelectric Cooling a realistic substitute for conventional refrigeration systems?

Posted: 05 Jun 2019 02:05 PM PDT

Is there any kind of wear (microscopic) in cables from data flow?

Posted: 06 Jun 2019 12:47 AM PDT

I was wondering if the fact that a cable (or fiber) is being heavily used is inducing any damage to it ?
Of course I mean on a very tiny tiny level.

submitted by /u/sweetmozzarella
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How do genetics show invasion took place in history?

Posted: 05 Jun 2019 10:56 PM PDT

Quite often I see genetic changes in populations viewed as invasion etc

Can you differentiate using genetics between a population that is undergoing invasion compared to say becoming multi-ethnic/cultural?

Or is more than genetic evidence required to make this conclusion?

Thanks for any help

submitted by /u/ingenious-ruse
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Is there a significant impact of owning a pet on depression? Have there been studies conducted on this topic?

Posted: 06 Jun 2019 06:44 AM PDT

I've seen anecdotes online about pet cats and dogs helping lift individuals out of a depressive rut, but have there been any studies on this effect on a larger scale?

submitted by /u/Hipp013
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Which liquid has the most surface tension?

Posted: 06 Jun 2019 12:43 AM PDT

How did we adopt standard rendering settings such as 1080p resolution, 30-60 fps, 60-144 hz refresh rate, etc.?

Posted: 05 Jun 2019 06:20 PM PDT

I'm curious as to how we came up with these standard values that most screen manufacturers, game creators, video rendering programs have adopted, etc. have adopted.

submitted by /u/_Sunny--
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Is our body temperature constant throughout our body? If so when we touch a part of our body why can it feel hot?

Posted: 05 Jun 2019 06:21 PM PDT

How do wolf eels retain the ability to bite after being beheaded?

Posted: 05 Jun 2019 04:23 PM PDT

Are they still alive, or is it because of nerves that haven't atrophied yet?

submitted by /u/selesnyandruid
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How would you classify what continent islands are on, such as Hawaii and St. Helena?

Posted: 05 Jun 2019 05:40 PM PDT

I couldn't find a good answer on google, all of them were very basic.

submitted by /u/XXnighthawk8809
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Can a gas/smoke stick to an adhesive surface? And if so, at what density would it require for this to possible?

Posted: 05 Jun 2019 06:18 PM PDT

What's the difference between your skin being burned by fire, UV-rays, and ionizing radiation?

Posted: 05 Jun 2019 06:18 PM PDT

At a certain level of severity are they all the same or are they each radically different at every scale?

submitted by /u/AnalogBubblebath
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What is the meaning of geological process? What are its examples?

Posted: 05 Jun 2019 10:58 PM PDT

I've been really curious about geological processes for quite a while now and I've been searching it on internet but I'm still not satisfied

submitted by /u/less-Name
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Do kidneys adapt to whether/regions with higher temperature?

Posted: 05 Jun 2019 05:52 PM PDT

It is known that after some time in a weather with much higher temperature than we are used to, we adapt by having changes in our sweating and metabolism. I do not know whether our kidneys also adapt in the long term by, for example, reabsorbing more water and producing urine with a higher concentration of solutes.

submitted by /u/mancifue
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What do the cerebellar tonsils actually do?

Posted: 05 Jun 2019 08:34 PM PDT

In Chiari malformation, a portion of the cerebellum called the tonsils herniate down through the opening of the skull, interfering with the circulation of cerebrospinal fluid and increasing pressure on the brain stem.

My question is this: What functional role do the tonsils play in the brain, and what neuronal tracts are they a part of? Are they functionally or histologically distinct from other regions of the cerebellum? Aside from the downstream mechanical effects due to their displacement, what implications does Chiari malformation have on their function/development?

submitted by /u/informant720
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Why does the western Asian region above India appear to have a much cooler climate?

Posted: 05 Jun 2019 08:20 PM PDT

I'm guessing elevation is a large factor. Looking for any clarification.

Source example: Cool Region https://imgur.com/a/SxxlVDb

Thanks ahead of time.

submitted by /u/logic_is_cool
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Ask Anything Wednesday - Engineering, Mathematics, Computer Science

Posted: 05 Jun 2019 08:13 AM PDT

Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Engineering, Mathematics, Computer Science

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
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What is the process- start to finish, of a hurricane?

Posted: 05 Jun 2019 09:18 AM PDT

Wednesday, June 5, 2019

What process occurs for a light bulb to be “burnt out”?

What process occurs for a light bulb to be “burnt out”?


What process occurs for a light bulb to be “burnt out”?

Posted: 04 Jun 2019 07:44 PM PDT

What is the diameter of the average bolt of lightning?

Posted: 04 Jun 2019 03:37 PM PDT

Does the size of the lighting have anything to do with its visibility? Or is it the intensity/energy in the bolt that makes it look bigger than it actually is?

submitted by /u/lilafrika
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Will the continents eventually connect to recreate Pangea?

Posted: 04 Jun 2019 04:22 PM PDT

What happens to breast implants after you die? So they decompose with the body or will they last with your skeleton for thousands of years?

Posted: 04 Jun 2019 01:59 PM PDT

Why are DVD-RAM disc sectors laid out the way they are?

Posted: 05 Jun 2019 04:20 AM PDT

I saw a DVD-RAM disc for the first time the other day and noticed an interesting pattern etched into the disc. The DVD-RAM Wikipedia page indicates they mark sector boundaries but not why they have that layout. It looks similar to how a rolling shutter affects rotating objects which makes me think it has something to do with how the read/write head moves over the disc. I feel it could also be caused by the increased number of sectors you can fit in each track as you move out from the center of the disc. I know very little about science and technology so I apologize if the answer is obvious.

submitted by /u/BrawkSyamson
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Are galaxies continually getting flatter?

Posted: 04 Jun 2019 05:47 PM PDT

Just like accretion disks, are galaxies destined to get flatter and flatter over time? Ignoring any kind of galactic mergers etc.

submitted by /u/Symbolmini
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How do we know that exoplanets aren't sunspots (starspots)?

Posted: 04 Jun 2019 11:35 AM PDT

It is my understanding that we have observed sunspots to be on an approximately 11 year cycle. For exoplanets that have have been discovered using transit photometry how is it determined that it is a planet causing the drop in brightness and not large sunspots?

submitted by /u/MithandirsGhost
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Does the toxicity of PM2.5 pollution depend on the composition of the particles?

Posted: 04 Jun 2019 03:21 PM PDT

For example, are soot particles more toxic than ammonium salt particles formed from ammonia reacting with atmospheric acids? Or is it simply the size that determines the toxicity?

I couldn't find much information about this.

submitted by /u/-Metacelsus-
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Why does a capacitor eventually have the voltage of the connected battery?

Posted: 04 Jun 2019 08:03 PM PDT

When a capacitor collects negative charge on one plate, it repels further incoming current, and also repels the negative charges on the other side of the plate so that the second plate is positively charged.

So additional electrons will be repeled by the negative plate but shouldn't they also be attracted to the positive plate? How do we know current stops when the capacitor voltage is equal to the battery voltage?

submitted by /u/yosimba2000
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Do photons decay or does just its evidence decay?

Posted: 04 Jun 2019 03:11 PM PDT

How is the age of a photon affected by large gravitational body?

Does the age of a photon directly relate to its rate of decay?

Has it been established that photons decay away? Or are the photons we speak of simply redshifting?

submitted by /u/Rogue_Evelynn
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Would the geographic center of a tectonic plate be the least earthquake-prone spot on that plate?

Posted: 04 Jun 2019 06:29 PM PDT

Or is it more the makeup of the underlying rock that makes an area less likely to experience quakes, regardless of how close it is to a fault line? Or perhaps a combination of both?

submitted by /u/Pawprintjj
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Does the macroscopic cosmic web and the microscopic quantum foam resemble one another in any manner?

Posted: 04 Jun 2019 02:42 PM PDT