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Monday, September 25, 2017

Nutrition Facts: Why is sodium listed instead of salt?

Nutrition Facts: Why is sodium listed instead of salt?


Nutrition Facts: Why is sodium listed instead of salt?

Posted: 24 Sep 2017 02:58 PM PDT

On nutrition facts they always list off sodium but never just salt. How come chloride content isn't listed as well, or all of the elements for that matter?

submitted by /u/Khannuuuuur
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When a baby is in the womb, what is the biological signal that lets the mother know the baby has reached full development, and what goes wrong with this signal when a child is born premature or late?

Posted: 25 Sep 2017 04:44 AM PDT

Is there just a biological clock in the mother's body that says 'times up' and then gives birth regardless of development, or is the signal sent from the unborn baby when they're fully developed?

submitted by /u/Mvnz
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The heart is just a basic two way pump. Why can't we just install two turbines and have a continuous flow of blood?

Posted: 25 Sep 2017 05:28 AM PDT

How do they determine the impact of a volcano that's about to erupt?

Posted: 25 Sep 2017 05:06 AM PDT

For example the one on Bali. How do they know that a radius of 12km will be enough?

submitted by /u/martijnvb
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What is the process of finding, extracting and containing helium for sale?

Posted: 25 Sep 2017 05:06 AM PDT

Considering that quantum computers may become a reality, how this will affect to programming languages?

Posted: 25 Sep 2017 07:06 AM PDT

I come to read this thread and I'm wondering if this could affect to programming languages such as C++, and then our ways to write software, or if it just would have and impact at the hardware level and/or assembly languages (like ARM).

submitted by /u/EuGENE87
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What gas is inside of unopened peppers? Or is it just air?

Posted: 24 Sep 2017 01:42 PM PDT

I'm assuming as a pepper grows its inside is never exposed to air on the outside.

submitted by /u/Driftinfisch
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How heavy is fire? If something catches on fire is it heavier or lighter?

Posted: 24 Sep 2017 07:06 PM PDT

How do we know how long the sun will burn for?

Posted: 25 Sep 2017 05:49 AM PDT

What would a circle look like if the ratio of its circumference to diameter was 3 instead of pi?

Posted: 24 Sep 2017 10:07 PM PDT

In Arthur C Clarke's series A Time Odyssey, there are spheres that have the ratio as 3 instead of pi and I was wondering what they might look like.

submitted by /u/747173
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What is a kilowatt hour, and why do electric companies charge based on this instead of kilowatts?

Posted: 24 Sep 2017 11:40 PM PDT

why are there Northern Lights but not Eastern Lights?

Posted: 25 Sep 2017 05:34 AM PDT

Is it because there is less rotation at the north and south pole's so the effect is condensed?

submitted by /u/detspek
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How does deodorant work?

Posted: 24 Sep 2017 01:44 PM PDT

I sweat a lot, but I never smell from it. How?

submitted by /u/puffymustash
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How much Asteroid mining/extra mass until it has an impact on earth's orbit?

Posted: 24 Sep 2017 04:41 PM PDT

How do scientists figure out how tall a mountain is?

Posted: 24 Sep 2017 08:49 PM PDT

How does a volume knob work?

Posted: 24 Sep 2017 10:36 PM PDT

If fluorine is bound into a diatomic molecule in which the octet rule is satisfied, then why is it still unstable to the point in which it violently reacts with just about anything else?

Posted: 24 Sep 2017 10:25 PM PDT

I have always been under the impression that in molecules in which the octet rule has been satisfied, each atom is "happy" with the eight electrons in its outer shell. Why, then, does fluorine prefer to bond with, say, sodium as opposed to itself? Why do hydrogen and oxygen prefer to be bound into H2O as opposed to their diatomic counterparts? In essence, why do atoms prefer some arrangements to others, even though the octet rule is fulfilled either way?

submitted by /u/Forestpotato
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In a magnetic hard disk, how are the servos that position the read/write head so accurate?

Posted: 24 Sep 2017 09:50 PM PDT

With the data tracks as narrow as they are (on the order of a hundred nanometers or so wide), these servos must be incredibly precise. How do they achieve that level of precision?

submitted by /u/dzScritches
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Why is drinking milk after spicy foods better than drinking water?

Posted: 24 Sep 2017 01:37 PM PDT

Google said that milk is non-polar which help to actually dissolve the capsaicin molecules in your mouth but I don't understand that.

submitted by /u/Theblankuser
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If we want to colonise mars, why don't we colonise it first with Cyanobacteria and then plants in order to create a habitable atmosphere?

Posted: 24 Sep 2017 02:40 PM PDT

In sending humans to Mars, what problems will need to be solved with respect to launching and returning astronauts from Mars' surface?

Posted: 24 Sep 2017 01:53 PM PDT

Even with the lower Martian gravity, will returning launch platforms/vehicles need to be in place before humans step foot on Mars for the first time? Also, with respect to the amount of time to travel to Mars and the differences between a Martian orbit and and Earth orbit, what is the minimum amount of time such a trip require?

submitted by /u/arachnids-on-parade
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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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