Pages

Saturday, September 23, 2017

What have been the implications/significance of finding the Higgs Boson particle?

What have been the implications/significance of finding the Higgs Boson particle?


What have been the implications/significance of finding the Higgs Boson particle?

Posted: 22 Sep 2017 04:04 PM PDT

There was so much hype about the "god particle" a few years ago. What have been the results of the find?

submitted by /u/Idle_Redditing
[link] [comments]

On a planet with more than 1 sun, what would a rainbow look like?

Posted: 22 Sep 2017 10:31 AM PDT

What happens when wind / a fluid is put through a T-shaped tube, where the bottom of the T is closed off, but the two sides are open? What happens to the fluid in the closed, vertical tube?

Posted: 23 Sep 2017 03:39 AM PDT

Say you have a tube in the shape of a T, where there is an opening on the left and right, but the bottom part is closed off. We have wind going into the right tube and exiting the left tube, or vice versa, but no wind is entering or exiting the bottom tube, because it's a dead-end.

Does the wind in the vertical tube get blown around randomly from the residual wind that doesn't go straight from the entrance to the exit?

Or is the wind mostly still because there's no path for the wind to take outside?

Does the pressure become higher or lower in the dead-end path?

Does it become windier or less windy?

And, of course, why does this happen?

Is there a place to learn more about this type of behavior in other types of tubes, like an X-shape where two paths are dead-ends, etc?

EDIT: Also, does the behavior change at all if, for example, the dead-end becomes the left or right side instead, such that the wind's path is no longer straight, but requires a right-angle turn?

submitted by /u/namohysip
[link] [comments]

We are carbon based life forms, however, is it possible for life to be based off another element?

Posted: 22 Sep 2017 08:02 AM PDT

Is there a maximum size for a raindrop?

Posted: 22 Sep 2017 09:49 AM PDT

My 9yo joked about a really big raindrop and asked me what I thought about that. When i thought about it, I didn't had the answer to a maximum raindrop size.

submitted by /u/spacees1
[link] [comments]

It's been about 5 years since the Mochizuki's ABC Conjecture proof was originally published. What's its current status?

Posted: 23 Sep 2017 03:22 AM PDT

How real is the threat of human extinction by gamma ray bursts?

Posted: 22 Sep 2017 07:31 PM PDT

Recently watched this video https://youtu.be/qqw41X3tai0 and now I'm terrified, should I be terrified or am I overreacting?

submitted by /u/3aush
[link] [comments]

Is learning another language simply additive to your mother tongue, or is the second language "separate" in your brain?

Posted: 22 Sep 2017 09:45 AM PDT

I noticed that I had an easy time reading in one language and listening to a talk show in another language while being able to focus on both things, but this was harder when I tried to do the same with the same language.

This lead me to ask the stated question, as this seems to be only explainable via a model where languages are not simply additive (by this I mean there exists a model of something in you brain, like a chair, and the word for chair in the language you are learning is simply another reference added onto the list of words that refer to chair, like what we do within a language when we learn of synonyms).

I put "separate" in quotations because I do not literally mean a new brain part, but something along the lines of a separate disassociated network.

submitted by /u/Boccard
[link] [comments]

What is actually happening when an electric current flows through an a salt solution or a molten salt?

Posted: 22 Sep 2017 07:41 PM PDT

Are the ions themselves moving? Are electrons jumping between ions? Something else?

submitted by /u/forager51
[link] [comments]

Why does the spin of a Black Hole affect how it looks?

Posted: 22 Sep 2017 10:16 AM PDT

I was reading another post on here about black holes and Interstellar, and stumbled on this article. There is a difference between how a non-spinning black hole looks and how a spinning black hole looks. No matter whether it's spinning, the black hole still has the same density and gravity right? If so, how come it bends the light differently in both instances?

submitted by /u/TrapHappier
[link] [comments]

How does soap work?

Posted: 22 Sep 2017 07:25 AM PDT

Assuming that Moon used to be part of the Earth, what made it so different?

Posted: 22 Sep 2017 09:31 AM PDT

I know that there is not fully accepted hypothesis on how Moon originated, but it seems like the theory of Moon forming after a major body impacted Earth is the leading theory.

So if we assume that this theory is true, what caused Moon to be so different to Earth? I am mainly talking about much higher albedo that allows Moon to reflect sunlight.

submitted by /u/Redthrist
[link] [comments]

Is there any physical or chemical difference between brand name and generic prescription drugs?

Posted: 22 Sep 2017 07:57 AM PDT

Can characteristics of same plant species vary from one place of growing to another?

Posted: 22 Sep 2017 07:25 AM PDT

I'm just reading about some plant healing effects, how it's less effective if it was grown in Europe instead of Egypt, and I find this absurd.

submitted by /u/lotekjeromuco
[link] [comments]

Where does the energy released during nuclear fusion come from?

Posted: 22 Sep 2017 10:43 AM PDT

Nuclear fusion is a process of nuclei being fused together to form heavier elements, which releases massive amounts of energy. What I'm wondering is whether this energy is present in those nuclei, and fusing them just releases it, or whether energy released at fusion comes from the energy used to fused those nuclei?

On a related note, how likely it is that nuclear fusion reactors on Earth are even possible, seeing how stars fuse nuclei through gravitational pressure, something that we can't exactly replicate on earth?

submitted by /u/Redthrist
[link] [comments]

Is it possible to make artificial cells such as cones or nerve cells?

Posted: 22 Sep 2017 08:31 AM PDT

So I'm only a sophomore in college but I have a strong interest in neuro-ophthalmology and I was wondering if nerve cells and other cells such as cones in your eyes can be artificially made. I understand stem cells are a possible way to regenerate but is there a way to artificially create those types of cells given the knowledge of biology and chemistry?

submitted by /u/al100100
[link] [comments]

What is the highest resolution a screen can have, at least in theory. And when would the pixel size become so small that it doesn't matter to the eyes anymore?

Posted: 22 Sep 2017 05:36 AM PDT

Is it possible to contract a common ilness (Flu, Colds) whilst being aboard the ISS?

Posted: 22 Sep 2017 08:15 AM PDT

If you launch something into space will it go forever, or is there a point at which it would come to a halt due to the few molecules floating around out there?

Posted: 22 Sep 2017 04:21 AM PDT

What are the main factors that determine how quickly a certain food will cook?

Posted: 22 Sep 2017 09:12 AM PDT

When measuring water percentage in an organism, is it only free water that is measured?

Posted: 22 Sep 2017 07:54 AM PDT

Or does the measure include water content in amino acids and carbohydrates?

submitted by /u/GothamBum
[link] [comments]

Friday, September 22, 2017

Are there any challenges for parasites living in animal blood?

Are there any challenges for parasites living in animal blood?


Are there any challenges for parasites living in animal blood?

Posted: 21 Sep 2017 05:32 PM PDT

As far as I know, most habitats have qualities that challenge inhabitants, so I was wondering how a blood habitat would challenge a parasite living in it.

submitted by /u/cuckoo22
[link] [comments]

What happens to heavy elements in a star?

Posted: 22 Sep 2017 04:20 AM PDT

I know that stars produce them when they explode, and that's the google result that is hard to dig through for an answer to this, but as the title says; What happens to heavy elements in a star? Do they get ejected, do they coalesce and get pushed aside in the core, or what?

Edit: I should clarify, I looked up heavy elements and apparently that means anything over #92 on the periodic table. I really just meant any metals, like gold as an example because it's relatable.

submitted by /u/TopComms
[link] [comments]

Have we physically measured time dilation in a real time experiment before?

Posted: 21 Sep 2017 11:06 PM PDT

If we put PTSD patients in an fMRI and asked them to relive their triggering memory, what would the scans show and what would it mean? Would it be possible to differentiate experience of the triggering memory from other significant emotional memories?

Posted: 22 Sep 2017 01:52 AM PDT

I understand the clinical side of ptsd but not the neurological side and am interested in finding out more, but don't know where to start or what the basics are. My preexisting knowledge is a B+ worth of Brain and Cognition five years ago in my undergrad. I presume there'd be arousal in the amygdala because it is fear inducing and the temporal lobes because it is a memory but that is guess work. Thank you for your time!

submitted by /u/dry-cleaner
[link] [comments]

Do Fungi have cell walls?

Posted: 22 Sep 2017 05:06 AM PDT

I'm not too sure, but do fungi have cell walls containing chitin?

submitted by /u/DemDankMemes
[link] [comments]

Why are atoms seemingly more stable at the "magic numbers" of 2, 8, 20, and 50?

Posted: 21 Sep 2017 08:29 AM PDT

Is it possible to crack/shatter a quartz (or any piezoelectric material) with enough electricity?

Posted: 21 Sep 2017 11:42 PM PDT

Will it crack, explode, shatter, or just melt when too much voltage is applied?

submitted by /u/NorthboundFox
[link] [comments]

Will cooling a piece of plastic increase its rigidity?

Posted: 21 Sep 2017 11:37 PM PDT

Since getting it hot has the opposite effect (melting), if I stick a piece of plastic in the freezer will this make it more rigid?

submitted by /u/Fluffy_G
[link] [comments]

Can trapped charged particles escape the Van Allen Belts? If so, how?

Posted: 21 Sep 2017 03:36 PM PDT

I teach a general astronomy course at my university. While discussing the Earth's magnetosphere and the Van Allen Belts, a student asked if the radiation was just building up or if a portion of it could escape somehow. I didn't know off the top of my head, so rather than BS an answer, I told them I'd find out and report back. A quick google and wikipedia search hasn't provided me with a succinct answer, so I'm hoping reddit can help me out.

My best guess is that random collisions give random particles enough energy to escape from the belts, but I'm not sure.

submitted by /u/mick4state
[link] [comments]

How far does electricity travel when lightening hits the ocean?

Posted: 21 Sep 2017 10:33 PM PDT

How was the modern science of photosynthesis and respiration discovered?

Posted: 21 Sep 2017 02:11 PM PDT

I'm a second level science teacher and I often get asked when teaching photosynthesis & respiration "how did people discover this?" I can never give a definite answer. I'm aware how it was originally discovered ,but I want to be able to give the answer as to how the electron pathways and things like the Krebs cycle were discovered. Thanks

submitted by /u/thefint
[link] [comments]

Why do bubbles in a glass or cup tend to move to the edges and stay there?

Posted: 21 Sep 2017 09:38 PM PDT

I don't mean carbonation. When I pour a coffee or something, the bubbles are all spread out and then "migrate" to the sides of the cup, even if you slosh it around a little.

submitted by /u/Kansai_Moth
[link] [comments]

What, if anything, are we doing to reduce waste buildup orbiting earth?

Posted: 21 Sep 2017 07:37 PM PDT

From what i know, it will soon become increasingly more difficult to launch spacecraft due to a field of it growing in our orbit. Could we somehow pull or push it into earths atmosphere for it to burn up?

submitted by /u/b-crew96
[link] [comments]

Is a rigid vacuum balloon possible? If so, how buoyant would it be?

Posted: 21 Sep 2017 05:14 PM PDT

How exactly do scents just "disappear"?

Posted: 21 Sep 2017 11:12 PM PDT

How do scents disappear? From what i understand scent is caused by small particles, but as long add those particles exist, shouldn't the smell last forever? For example, if i were to spray perfume into a pillow, i would expect the scent to last indefinitely until i wash it since the particles are still on the pillow.

submitted by /u/iritator
[link] [comments]

If sea level is rising, why are the beaches I know still the same size and shape?

Posted: 21 Sep 2017 10:20 AM PDT

It seems pretty clear that sea level is rising (3mm a year): https://oceanservice.noaa.gov/facts/sealevel.html That being the case, shouldn't that be obvious when looking at beaches and other coastlines? All the coastlines I know well (Northern Europe) haven't noticeably changed in the last 20 years and looking at old photos, haven't changed in over 100.

I could understand the argument that some areas rise while others fall for various reasons but, again, looking at historical photos of other regions, the story is the same.

So why doesn't sea level seem to be rising to a layperson when the actual rise is significant?

submitted by /u/whocaresitsjustred
[link] [comments]

[Astrophysics] Do gravity waves propagate at the speed of light, or, if they are ripples in the fabric of Space-time, do they propagate instantaneously?

Posted: 21 Sep 2017 07:00 PM PDT

Why don't we use Thorium for our power plants?

Posted: 21 Sep 2017 09:57 AM PDT

Is our body better at warming us up or cooling us down?

Posted: 21 Sep 2017 11:24 AM PDT

Thursday, September 21, 2017

Does heat, humidity, and other atmospheric variables affect wi-fi and other signals?

Does heat, humidity, and other atmospheric variables affect wi-fi and other signals?


Does heat, humidity, and other atmospheric variables affect wi-fi and other signals?

Posted: 20 Sep 2017 07:36 PM PDT

Are there equations that model how rivers change their course over time?

Posted: 21 Sep 2017 05:20 AM PDT

I was looking at this picture, and it reminded me of the Kelvin–Helmholtz instability

How accurate this idea? The KH-instability is only intended for use at the interface between two fluids, and the riverbed is solid. Are there good equations modeling how rivers change their course over time?

submitted by /u/Baconmancr
[link] [comments]

What elastic moduli are strain dependent?

Posted: 21 Sep 2017 06:54 AM PDT

Hi,

I'll try and keep it brief; Which of the elastic moduli show a strong dependence on strain rate and magnitude?

I know for a fact that the shear modulus does, do the bulk and young's modulus also?

Some background to my question - I am working with both dynamic and static moduli at varying measurement frequency, and well aware of shear-modulus degradation with strain. But I was wondering about the others. If anyone can direct some reading my way that would be great; I have access to most journals and papers through my institution.

Thanks

submitted by /u/8556732
[link] [comments]

Where does the Higgs boson gets its own mass?

Posted: 21 Sep 2017 03:11 AM PDT

I was learning about the Higgs boson and read that it had mass but if everything got its mass from the Higgs boson and the Higgs field then how does a Higgs boson get mass? Does it self interact? Or does the Higgs Boson not have mass and can travel at light speed?

submitted by /u/JackTalle
[link] [comments]

What do sexes in fungus mean?

Posted: 20 Sep 2017 12:43 PM PDT

From the Wikipedia entry on Schizophyllum commune

It has 23,328 distinct sexes; individuals of any sex are compatible for mating with all but their own sex.

What does that mean?

submitted by /u/Snewzie
[link] [comments]

Where does the theoretical "two week" limit on weather forecasting skill come from?

Posted: 21 Sep 2017 04:53 AM PDT

I'm familiar with Lorenz' chaos paper and ensemble forecasting in general but I have yet to find a reference that actually calculates the oft repeated "two week" theoretical limit on weather forecasting. Does anyone know of the original reference?

For context, here are the final paragraphs from Ed Lorenz' seminal chaos paper:

This quasi-periodic behavior need not be established, though, even if very-long-range forecasting is feasible, if the variety of possible atmospheric states is so immense that analogues need never occur. It should be noted that these conclusions do not depend upon whether or not the atmosphere is deterministic.

There remains the very important question as to how long is "very-long-range". Our results do not give the answer for the atmosphere; conceivably it could be a few days or a few centuries. In an idealized system, whether it be the simple convective model described here, or a complicated system designed to resemble the atmosphere as closely as possible [Such as weather forecasting models], the answer may be obtained by comparing pairs of numerical solutions having nearly identical initial conditions [Ensemble forecasting]. In the case of the real atmosphere, if all other methods fail, we can wait for an analogue [Cheeky].

submitted by /u/aClimateScientist
[link] [comments]

Do Most Comets Orbit in the Same Plane as the Planets?

Posted: 21 Sep 2017 08:18 AM PDT

How different is our vision from the other apes?

Posted: 21 Sep 2017 08:17 AM PDT

Does honey from different flowers taste different or do all bee "recipes" taste the same?

Posted: 21 Sep 2017 08:12 AM PDT

Similarly, do these differences affect pollen allergy sensitivity?

submitted by /u/shutterlagged
[link] [comments]

Where does the "blast" portion of a nuclear explosion come from?

Posted: 20 Sep 2017 03:04 PM PDT

In a chemical explosion, overpressure is generated by rapidly expanding gasses as the explosive reacts with Oxygen. I can see where the kinetic energy is produced there. In a nuclear explosion, it's a little bit fuzzier as to where the medium is getting the kinetic energy to produce a pressure wave. Is it coming from the expulsion of high-speed neutrons and fission products? Or is the radiation itself producing pressure from thermal expansion?

submitted by /u/Rysander
[link] [comments]

Historically, when large numbers of sailboats/ships had to travel in formation as a fleet, are there different dynamics governing the movement of ships in the front, middle and rear of the group?

Posted: 20 Sep 2017 11:20 AM PDT

I was wondering if large numbers of ships traveling together created issues for the ships behind them. Does wind change direction in between the boats of the fleet? Are there currents created by the front of the fleet that can cause problems for the rest of the fleet? Does that translate to larger ships today, like the ships the navy uses?

submitted by /u/scrubbingbubble
[link] [comments]

How do female mosquitoes know humans have blood to suck?

Posted: 21 Sep 2017 04:42 AM PDT

How do your eyes prevent shaking while you're walking?

Posted: 20 Sep 2017 05:49 PM PDT

I've paid close attention to how some camera's now use OIS, or optical image stabilization, and EIS, or Electronic image stabilization and I was wondering why my vision isn't shaking while I'm walking. Is it some physical thing near my eyes stabilizing what I see or is that handled by the brain?

submitted by /u/wisconsinb5
[link] [comments]

Does a volcanic eruption make another volcanic eruption more likely?

Posted: 20 Sep 2017 01:48 PM PDT

Clarification: Another eruption from a different volcano.

submitted by /u/re_nonsequiturs
[link] [comments]

Saw this strange cloud over Santa Cruz/tenerife today. Everyone was taking pictures. Can someone explain what is going on here? (does this type have a name?...)

Posted: 20 Sep 2017 06:42 PM PDT

Here is a picture. We strolled through the city and everywhere were people taking pictures of it. Clpud https://imgur.com/gallery/09tbN

submitted by /u/farox
[link] [comments]

Do atmospheric CO2 measurements include a significant diurnal cycle?

Posted: 20 Sep 2017 11:58 AM PDT

I know the annual cycle is obvious in CO2 concentrations. Is a diurnal cycle often visible either locally or globally?

Also, what (roughly) is the mixing time scale for CO2 over the whole atmosphere?

submitted by /u/descabezado
[link] [comments]

Are Toucans (Americas) and Hornbills (Asia/Africa) an example of convergent evolution?

Posted: 20 Sep 2017 09:53 AM PDT

Indian Hornbill

Toucan

Both eat fruit/insects in various amounts depending on the species. Figs, etc.

submitted by /u/sobeadrenalinerush
[link] [comments]

How do bionic arms work?

Posted: 20 Sep 2017 10:11 AM PDT

My understanding is people can control bionic arms the same way they control regular arms: through volition and transmitting neurological signals to various locations in the body.

Where and how do bionic arms interface with the body? Do they read neurological signals directly? How?

submitted by /u/_Clever_Name_Here_
[link] [comments]

Why do nuclei release energy when they fuse?

Posted: 20 Sep 2017 11:16 AM PDT

I understand that the binding energy increases, but this doesn't make sense to me.

You need a lot of energy to break a small nucleus into its constituents to overcome the strong force, but why would "submitting" to the strong force and attracting cause energy to be released?

Is this some sort of potential energy? (Like how work is needed to overcome gravity, but if an object "submits" to gravity and falls it releases its potential energy)

Is it the case with all forces that when something submits to a force it releases its potential energy like that?

submitted by /u/Ambidextroid
[link] [comments]

Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science

Posted: 20 Sep 2017 08:07 AM PDT

Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Physics, Astronomy, Earth and Planetary 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
[link] [comments]

What are the estimated thicknesses for northern sea-ice at the height of the Pleistocene glaciation, and how are those thicknesses estimated?

Posted: 20 Sep 2017 12:48 PM PDT

I get how these estimates are calculated on land, on the basis of isostatic rebound notably. But how do we work that out over sea?

submitted by /u/Gargatua13013
[link] [comments]

Why are non-differentiable continuous functions integrable?

Posted: 20 Sep 2017 09:18 AM PDT

We learnt that a |mod| function is continuous yet non-differentiable and as integrals are defined as "anti-derivatives" sooo how come we can integrate a mod function yet we can't differentiate it?

submitted by /u/Ishjot11
[link] [comments]