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Sunday, September 24, 2017

Duck fat melts at 57 degrees Fahrenheit. So on a 90 degree day, is a living duck's fat just... sloshing around?

Duck fat melts at 57 degrees Fahrenheit. So on a 90 degree day, is a living duck's fat just... sloshing around?


Duck fat melts at 57 degrees Fahrenheit. So on a 90 degree day, is a living duck's fat just... sloshing around?

Posted: 23 Sep 2017 05:36 AM PDT

Is there some difference in how the fat behaves in a jar vs. a living duck?

submitted by /u/personablepickle
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How does computer memory work when the computer is turned off?

Posted: 23 Sep 2017 09:08 AM PDT

Do the currents keep on going somehow in the semiconductor chips? Is it somehow that the state is stored in a static manner?

submitted by /u/rusty_ballsack_42
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If natural fruit juices contain large amounts of sugar, why do we only seem to refine sugars from a select few plants (sugarcane, sugar beets) instead of from fruits in general?

Posted: 23 Sep 2017 01:25 PM PDT

I understand that there's differences in the sugar composition (sucrose as a disaccharide vs glucose/fructose as monosaccharides, and that fruits contain more fructose), but I don't understand why "alternative" sugars like HFCS seem to be a relatively new thing, and limited to basically just corn so far as I'm aware.

In theory, humans have had access to fruit pretty much forever, so why do we only use a few dedicated sugar crops to produce refined sugar, instead of more regionally accessible fruits?

Is it simply a matter of economics, or is there some inherent difference that makes refining fruit sugars impossible?

submitted by /u/FeatherFallen
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Can microwaves work without using water molecules to heat up food?

Posted: 23 Sep 2017 09:51 AM PDT

What have we learned from Cassini's dive into Saturn so far?

Posted: 23 Sep 2017 01:45 PM PDT

Why do hospitals have heart clinics specifically for Women? Aren't all hearts the same?

Posted: 23 Sep 2017 04:44 PM PDT

Do ape's toenails grow slower than their fingernails, like humans?

Posted: 23 Sep 2017 06:33 PM PDT

I know our toenails grow 3-4 times slower than our fingernails, just wondering how we compare to apes.

submitted by /u/UsernameCreated2Vote
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How do they prevent the ISS from crashing into satellites and space junk?

Posted: 23 Sep 2017 01:36 PM PDT

Do small songbirds - a finch, say - ever get stung by bees/ wasps? If so, is it typically fatal?

Posted: 23 Sep 2017 08:03 AM PDT

Does Quinine glow even after you remove it from a black light?

Posted: 23 Sep 2017 09:50 AM PDT

So I know that quinine glows when you shine a black light on it. However, I don't know what happens when you take it away, and a quick Google search doesn't seem to help. Does the quinine found in tonic water continue to glow after taking the black light away from it? My end goal is to make homemade nuka cola quantum that glows, but I don't know if using quinine is worth it if I always need a black light.

submitted by /u/_MMartinez_
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Can we forecast the northern and/or southern lights?

Posted: 23 Sep 2017 07:35 AM PDT

What can layers and swrils in rock indicate?

Posted: 23 Sep 2017 05:41 AM PDT

I drive by this out cropping everyday and I've always noticed the curves and waves in the rock. What causes bending like this? I know it probably took a billion years for it to show on the side of the highway in NE Tennessee, but what can you tell from looking at it?

https://imgur.com/3tdjgJu

submitted by /u/matt12046
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Why can't you count the number of things touching you in a certain spot?

Posted: 23 Sep 2017 08:12 AM PDT

If someone poked me in the back with multiple fingers and asked me to count how many fingers were on my back, I would not be able to come up with an accurate number. I don't mean getting poked in the arm and on the hip because those are two separate places and it's obvious; I mean getting poked in one area with multiple fingers. Obviously it gets more difficult the closer together those fingers are, but regardless it's still nigh impossible to count correctly if they're all in one region. Why?

submitted by /u/lmaoser
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How do insects protect their eyes from direct sunlight?

Posted: 23 Sep 2017 04:35 AM PDT

In a coronary bypass surgery, why do doctors use veins instead of arteries? Is there an advantage to this?

Posted: 23 Sep 2017 03:11 AM PDT

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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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[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