Recent comments in /f/explainlikeimfive
[deleted] t1_j6mk905 wrote
Reply to comment by AshFraxinusEps in ELI5: Why do so many fruits have seedless varieties but the apple and cherry do not? by JanaCinnamon
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Spank86 t1_j6mjs6s wrote
Reply to comment by bal00 in ElI5 why do digital books in the library have limited copies? by Leather-Custard8329
Pretty sure it would be worse for them than that. Unlimited copies of an ebook would mean no ebook sales not to libraries once word got around. Thats a lot of sales to make up.
NotJoeMama727 OP t1_j6mjrd0 wrote
Reply to comment by Pocok5 in ELI5: Why is having a lower refresh rate on a display better for battery? by NotJoeMama727
What if it's an OLED display though?
Chromotron t1_j6mjqvg wrote
Reply to comment by The_A4_Paper in ELI5: If the universe is flat, and therefore infinite in size, how could it have been condensed to a single point in the past? by joeyo1423
> If the universe as a whole(including outside of the observable universe) then it wasn't a single point, infinite was always infinite and will always be infinite.
This misconception is weirdly common and contradicts basic topology:
If every bubble of, say, 10^10 ly, was once a single point, then the entire universe was once a single point.
Proof: assume x,y are any two points. Connect them by a path of finite (but potentially extremely large, even by universe standards) length. Overlay that path with finitely many of those 10^10 ly bubbles, such that they overlap, forming a "chain". Let A, B be two neighboring overlapping bubbles. Then once all points of A were the same point a, and all of B were once the same point b. But now look at any point p in their intersection: p was once both a and b, thus a=b! Doing this iteratively with the chain of bubbles, we arrive at the conclusion that any two points were once the same! [ ]
And indeed, the infinite(!) 3D (or 4D) space is contractible, it can be contracted into a single point in finite time. Even at locally finite & bounded speed.
Anyway, there are quite a few models of the Big Bang where the universe was always infinite, just with also infinite density at the beginning. The Big Bang needs not necessarily be a single point in the usual sense.
Pocok5 t1_j6mjprs wrote
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Lower power consumption from the CPU and GPU as they don't need to prepare and render that many frames
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Lower power consumption from the LCD panel - it takes power to flip the little crystals from transparent to opaque, and generally the faster you want something to work, the more power you need to pump in it, though I think that last part is only relevant if the screen also switches to a slower response time.
The_A4_Paper t1_j6miz2h wrote
Reply to comment by ZombieCupcake22 in ELI5: If the universe is flat, and therefore infinite in size, how could it have been condensed to a single point in the past? by joeyo1423
To add to this though, Not all tori are flat. Donut isn't flat it's negative on the inside and positive on the outside. When we specifically talk about tori that are flat, we usually refer to them as "flat torus"
WeirdGamerAidan OP t1_j6miy85 wrote
Reply to comment by WeirdGamerAidan in ELI5: Why do computers need GPUs (integrated or external)? What information is the CPU sending to the GPU that it can't just send to a display? by WeirdGamerAidan
I don't recall if in task manager it shows it's using the gpu
WeirdGamerAidan OP t1_j6miuo3 wrote
Reply to comment by kanavi36 in ELI5: Why do computers need GPUs (integrated or external)? What information is the CPU sending to the GPU that it can't just send to a display? by WeirdGamerAidan
When it happens, as soon as I load up the game cpu usage skyrockets to 100 and gpu stays low, and the game runs at like 1 fps. Happens the most with Roblox and Superliminal. I usually have to reload those games several times before it works properly.
[deleted] t1_j6mirab wrote
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jtho78 t1_j6miox2 wrote
Reply to comment by Tanagrabelle in ElI5 why do digital books in the library have limited copies? by Leather-Custard8329
Correct, OP should be comparing Netflix to something like Kindle Unlimited, not the library
Chromotron t1_j6mioqq wrote
Reply to comment by ZombieCupcake22 in ELI5: If the universe is flat, and therefore infinite in size, how could it have been condensed to a single point in the past? by joeyo1423
Be careful, technically a torus is not flat at most points when drawn as a donut. One needs to use the "flat torus" which can only be properly embedded ("drawn") in 4 dimensions.
ZombieCupcake22 t1_j6mid7f wrote
Reply to ELI5: If the universe is flat, and therefore infinite in size, how could it have been condensed to a single point in the past? by joeyo1423
If the universe is spatially flat and can still be finite.
The surface of the torus (donut) can also be spatially flat, but it is finite. So you have two possibilities for a flat Universe: one infinite, like a plane, and one finite, like a torus, where both are flat.
agate_ t1_j6mi3f9 wrote
Reply to ELI5: Who gives authority to a police department? Lets say a new town were to be founded somewhere in the US, how is the local law enforcement agency brought up in that town? by Interesting-Leek-202
In the US, towns get their authority from their charter, which is approved by the state legislature when they are formed. The charter will describe and authorize a town police department; the local police get their authority from that.
The_A4_Paper t1_j6mhu2d wrote
Reply to ELI5: If the universe is flat, and therefore infinite in size, how could it have been condensed to a single point in the past? by joeyo1423
If the universe is infinite then it wasn't a single point, when physicists talk about a "Single point" they usually refer to the "Observable universe" which is finite. in fact when they talk about the "Universe" they usually just mean the observable part.
If the universe as a whole(including outside of the observable universe) then it wasn't a single point, infinite was always infinite and will always be infinite.
The leading idea is that there's no single point but every point in the universe is the center of big bang, a finite volume of space comes from a point and every point expands into a finite volume the size of the observable universe.
[deleted] t1_j6mhpsr wrote
Tanagrabelle t1_j6mhpj7 wrote
Because in theory, every person watching that movie has paid Netflix to use it.
Your library bought that digital book. One book. One person can borrow it. Two books. Two people can borrow them. Tax money has already paid for those books.
mostlygray t1_j6mhn9g wrote
Reply to comment by Tratix in Eli5....can you dig a well anywhere and hit water...and how did the early ranchers in the West know where to dig for water. Especially in the really dry areas? by pinkshrinkrn
Ideally the water is coming from a free-flowing aquifer. You dig down a few hundred feet. Sometimes the water is sitting on top of the rock. Sometimes it's below. Sometimes it's in a mix of gravel. It could be 100 feet down, it could be 1,000 feet down. It depends on where the water is.
If the water is from an artesian well, it could be coming from a thousand miles away through the bedrock from the mountains. It could be refilled from rain water that leaks down through the water table. It could be from underground streams.
Unless the water is very shallow, there shouldn't be any bacterial contamination. You test the water to see that it's safe to drink. You're looking for bacteria, heavy metals, pesticide runoff, that sort of thing.
My parents well is about 400 feet down. Through the bedrock. The water is from an underground stream and comes up through the cracks in the rock and keeps the field next door always wet, even in a dry year. The water is high in iron but doesn't have heavy metal contamination to speak off. The copper/nickle is closer to the surface in the clay. The clay is full of iron too. At about 6 feet down, the clay has enough iron in it that a magnet sticks to it. Below that, it's a neutral gray clay that goes down to pea gravel, then bedrock. You can get water out of the gravel, but the refill time would be ridiculous so you pull from below it.
All that clay and rock acts like a filter to keep contaminates out of your drinking water.
Chromotron t1_j6mhn7u wrote
Reply to comment by joeyo1423 in Eli5 Why can’t Stars use Iron in nuclear fusion? by Drippidy
I have no idea why people down-voted you, this is a perfectly legitimate and pretty good question; some here are just jerks...
Yes, but rarely. And mostly at the end when the star is at its hottest in the center. I don't have numbers on how often it actually happens, but it definitely does.
At the most extreme end in particular, when a star goes supernova (not all do) it collapses so hard to its center that this creates extreme pressure and releases absurd amounts of energy. This fuses iron and all the other stuff beyond all limits; the energy is almost irrelevant, we are talking about hundreds of Earth masses(!!!) as pure energy. This is one of the two processes that creates the elements beyond iron in the amounts we find them (the other option are collisions of neutron stars).
ExtremelyGamer1 t1_j6mhhwh wrote
Reply to comment by TheLuteceSibling in ELI5: Why do computers need GPUs (integrated or external)? What information is the CPU sending to the GPU that it can't just send to a display? by WeirdGamerAidan
I think you have cpu and gpu flipped.
joeyo1423 t1_j6mhcd0 wrote
Reply to comment by ZackyZack in Eli5 Why can’t Stars use Iron in nuclear fusion? by Drippidy
That I do understand, but I wasn't sure if heavier elements fuse while the star is still active or if there is absolutely no fusion beyond iron until it blows up
[deleted] t1_j6mhai2 wrote
ExtremelyGamer1 t1_j6mh9z7 wrote
Reply to comment by Sneak-Scope in ELI5: Why do computers need GPUs (integrated or external)? What information is the CPU sending to the GPU that it can't just send to a display? by WeirdGamerAidan
Yes you’re right the GPU is better at task switching which is why it is good at parallel tasks. It can switch between threads so that it never has to wait too long on it to finish.
ZackyZack t1_j6mh22c wrote
Reply to comment by joeyo1423 in Eli5 Why can’t Stars use Iron in nuclear fusion? by Drippidy
Supernovas do it all the time
kaizokuuuu t1_j6mk9k8 wrote
Reply to comment by Amationary in ELI5: Why does eating pineapple make my tongue tingle? by crqlp4
Is this the same thing that happens when eating Monstera deliciosa as well?