Recent comments in /f/explainlikeimfive
GuruBuckaroo t1_iyd85qf wrote
Reply to comment by mikeholczer in eli5 Are GMT and UTC timezones somehow different? If so, how? by CrispyDairy
The gap may never become wider. Last year it was determined that a leap second should be deducted from UTC for the first time, but there was no precedent on how to do so. This was the driving factor for the removal of Leap Seconds overall.
[deleted] t1_iyd82l3 wrote
Reply to ELI5: Why do 26°C (78°F) feel colder in the water than 26°C (78°F) air temperature? by GrooveBeatz
Water is roughly 20x more thermally conductive than air, so it takes heat away much faster. Air also takes heat away from your body, but your body can make the heat back faster than the air can take it away.
[deleted] t1_iyd81mx wrote
Reply to comment by [deleted] in ELI5: Why are pills those specific shapes and sizes? I've noticed ibuprofen is always smaller and tastes sweeter than paracetamol. Codeine is tiny and amoxiclav pills are huge. Is this to make it harder to confuse them, or is it because of the way the active ingredient is released in the stomach? by mwclarkson
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ialsoagree t1_iyd7zq3 wrote
Reply to comment by Chromotron in ELI5: Why does stuff dissolve in hot water more? by samuelma
I'm saying it's not "bonding to a molecule" if you disagree you need to take introductory chemistry.
Further, I just want to point out, hydrogen bonding only applies to ionic substances being dissolved in specific solvents. So many things dissolve without hydrogen bonding at all.
You clearly don't understand the basics of chemistry.
its-octopeople t1_iyd7xq4 wrote
Reply to comment by avdolian in ELI5: How is that space is “flat” yet we are able to look around the universe (up, down, left, right, etc.,) as if it were not flat? by nhabz
Okay, not parallel lines but parallel geodesic curves. I don't know if I can ELI5 geodesics, but I'll have a go
Okay, you can't take a straight line on a sphere, obviously. But if you walked around the equator, most people would a agree you'd walked pretty much a straight path. However, if you walked a 1 meter circle around the North pole, no-one would recognise that as a straight path, even though they're both lines of latitude and they're both parallel
What's the difference? Pick any two points on the equator. The shortest path between them (staying on the sphere), also follows the equator. For the small circle you don't have that property - you can find a shorter curve that cuts through the interior of the circle. Curves that have this shortest distance property are called geodesics
So the statement about flatness should be; two geodesics - that is, two shortest distance curves - that are parallel at some point, stay parallel their whole lengths
[deleted] t1_iyd7u8g wrote
Reply to comment by [deleted] in ELI5: Why are pills those specific shapes and sizes? I've noticed ibuprofen is always smaller and tastes sweeter than paracetamol. Codeine is tiny and amoxiclav pills are huge. Is this to make it harder to confuse them, or is it because of the way the active ingredient is released in the stomach? by mwclarkson
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[deleted] t1_iyd7kqu wrote
Reply to comment by [deleted] in ELI5 how the illegal trade of human organs works? by C20_H26_N2O
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Chromotron t1_iyd79iq wrote
Reply to comment by ialsoagree in ELI5: Why does stuff dissolve in hot water more? by samuelma
Are you seriously saying that "hydrogen bonding" is not "bonding""? Because that is clearly silly.
And yes, they said the new bonds (the hydrogen ones, duh!) release energy; after more(!) energy was used to break ionic bonds.
You are just trying to be pedantic and fail at it.
Clewin t1_iyd736l wrote
Reply to comment by Deadmist in ELI5: why is using "goto" considered to be a bad practice in programming? by Dacadey
Speaking of, one of the biggest uses of GOTO I saw in C was for exception handling. C++ as well, until try-catch blocks were added (and that varied by compiler until the late 1990s, early 2000s).
Miss_Understands_ t1_iyd701t wrote
Reply to comment by WFOMO in ELI5: How does electricity shock us in water? by thebiggestbirddd
No, because salt doesnt make water perfectly conductive, and a 100,000 volt bolt will break down any insulation.
[deleted] t1_iyd6x68 wrote
Reply to comment by [deleted] in ELI5: Why are pills those specific shapes and sizes? I've noticed ibuprofen is always smaller and tastes sweeter than paracetamol. Codeine is tiny and amoxiclav pills are huge. Is this to make it harder to confuse them, or is it because of the way the active ingredient is released in the stomach? by mwclarkson
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Chromotron t1_iyd6vvv wrote
Reply to comment by Megalomania192 in ELI5: Why does stuff dissolve in hot water more? by samuelma
Maybe some examples for lesser solubility at higher temperatures that are salts:
- many calcium salts such as its carbonate (gypsum), sulfate (chalk), phosphate, etc.;
- sodium sulfate has its highest solubility at 33°C, it falls off in both directions;
- unlike what many believe, table salt's solubility increases almost not with temperature; only the speed of dissolving does.
It is also interesting to note that some salts produce a lot of heat (e.g. NaOH a.k.a. caustic soda) or cold (e.g. ammonium nitrate a.k.a. the stuff that blew up Beirut, or urea). This and solubility are related, but all combinations can happen.
LOSTandCONFUSEDinMAY t1_iyd6qt5 wrote
Reply to comment by nhabz in ELI5: How is that space is “flat” yet we are able to look around the universe (up, down, left, right, etc.,) as if it were not flat? by nhabz
We use the word flat because we haven't got a specific word for 3D nor a general word to use so we use the closet one available which is 'flat' a word traditionally for 2D. Not curved/a curvature of 0, might be a less confusing way to describe the universe.
A similar issue arises when talking about 'size' in higher dimensions. An object in 1D is a line and its size is called length, in 2D you have a surface with an area, in 3D your object has a volume.
But in 4D we haven't got a unique name for its size and call it volume again. and it doesn't help that like every 3D object has a 2D surface area, a 4D object has a 3D volume. Therefore every 4D object has two measurements called volume (though its specified surface or interior volume).
And get gets worse as you go up in dimensions because every dimension you go up you get an additional type of volume to consider but the highest dimension measurement is usually considered its size.
TLDR: dimensions are confusing and we haven't got enough words in english to properly or easily talk about it.
shompyblah t1_iyd6pzc wrote
Reply to comment by just_a_pyro in ELI5: How does machine learning work? by Nightmarewasta
….but a computer doesn’t care if it’s rewarded or punished.
internetboyfriend666 t1_iyd6o6t wrote
Reply to ELI5: How is that space is “flat” yet we are able to look around the universe (up, down, left, right, etc.,) as if it were not flat? by nhabz
Flat in this context doesn't mean 2 dimensional, flat means the universe is not curved, or in other words, it obeys Euclidean geometry. Euclidean geometry is the geometry that everyone is most familiar with and is most applicable in our daily lives. It's where parallel lines never meet and the sum of the angles in a triangle is always 180 degrees. There are other types of geometry where these things are not true. For example, the surface of a sphere is not Euclidean - parallel lines will always meet and the sum of angles in a triangle can be more that 180 degrees.
thatnotsorichrichkid t1_iyd6k6r wrote
Reply to comment by Way2Foxy in ELI5 why we first multiply, then add by TheManNamedPeterPan
That's exactly how I'd do it, but i kinda understand your point. To do a set of non-whole integers multiplied, one requires a way of splitting 'the last plus', and the only way my Imagination allows me to would be multiplication
nmxt t1_iyd6ju9 wrote
Reply to comment by finlandery in ELI5: Why does stuff dissolve in hot water more? by samuelma
No it’s not always like that. During dissolving the bonds between the pieces of the solid are broken but new bonds between water molecules and ions are formed. Breaking bonds requires energy, and making bonds releases energy. Therefore, if the pieces of solid are more inclined to bonding with water than with other pieces of the same solid, then overall energy is released and the temperature rises (e.g. sugar). Otherwise, energy is consumed and the temperature falls (e.g. table salt).
reviewbarn t1_iyd6exp wrote
Reply to comment by Lithuim in ELI5 If money can come out of nowhere, can't it pop into somewhere? by TheKrillers
Your first paragraph is accurate. The government can print money indefinitely with a forever balance of benefits/problems.
Your second paragraph is quasi accurate. Overprinting money is ONE way inflation can happen, but not the only one. And more importantly, it is NOT the cause of the current GLOBAL inflation, nor is it relevant to the OP's question.
He asked specifically how two programs were paid for, and neither were paid for in the manner you suggest here.
[deleted] t1_iyd63y2 wrote
Reply to comment by [deleted] in ELI5: Why are pills those specific shapes and sizes? I've noticed ibuprofen is always smaller and tastes sweeter than paracetamol. Codeine is tiny and amoxiclav pills are huge. Is this to make it harder to confuse them, or is it because of the way the active ingredient is released in the stomach? by mwclarkson
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Tofts4545 t1_iyd5wip wrote
Reply to comment by themeatbridge in ELI5 how the illegal trade of human organs works? by C20_H26_N2O
It was clear. Reading the thread allows you to formulate the context of what is being discussed.
>but you could have been clearer
Second, I was not the one discussing anything. I am a bystander who understood what was being discussed. I chimed in to help others understand.
ThatCrossDresser t1_iyd5szp wrote
At a basic level heat is just molecules moving around more. The colder it is, the slower water molecules fly around. Water molecules either bind or breakdown other molecules through typical chemical processes. When water comes in contact with glucose it binds with it and your Hot Chocolate mix starts to become one fluid instead of water and a powder. So the more the molecules are moving around the more likely they are to come into contact with the thing you are dissolving. Fats also undergo chemical changes when they get hot so they may become fluid and mix better in water.
WinBarr86 t1_iyd5s0i wrote
Reply to comment by urzu_seven in ELI5: How is that space is “flat” yet we are able to look around the universe (up, down, left, right, etc.,) as if it were not flat? by nhabz
I'm trying to keep it simple. But plz do explain. Without explaining like your talking to a scientist who knows alot of the concepts of space/time.
Edit.
But we both know space isn't flat.
Spacetime is not flat. It can't be: Einstein's general theory of relativity says that matter and energy curve spacetime, and there are enough matter and energy lying around to provide for curvature.
[deleted] t1_iyd5mfx wrote
Reply to comment by [deleted] in ELI5 how the illegal trade of human organs works? by C20_H26_N2O
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KKtwo t1_iyd5l2z wrote
Reply to eli5. If Windows is an 11gb download, why do you need at least 65gbs free on your hard drive to run it? by graemo72
Imagine you’re moving into a new house. You have all your possession in boxes and they take up your living room leaving the rest of the house empty. You unpack your possessions and fill the rest of the house making it easy to find and use things.
Downloading Windows onto your hard drive or ssd is the same as putting your ‘moving boxes’ on the drive. Installing windows is the same as unpacking and settling in and having files where they need to be to use them.
talkingprawn t1_iyd85tc wrote
Reply to ELI5: Why do 26°C (78°F) feel colder in the water than 26°C (78°F) air temperature? by GrooveBeatz
It’s because of heat conduction. Air is a better insulator than water, so it transmits less heat out of your body. Water is a poor insulator and transmits more. You feel cold based on how much heat leaves your body.