Recent comments in /f/explainlikeimfive
shuvool t1_iy8nn2m wrote
I'm pretty sure this has been asked recently. Lungs are designed specifically to exchange gas with blood. They've got a huge amount of surface area to do this. Mammals have alveoli, and other vertebrates have parts that function similarly but the structures can be different. The big thing here is that the air sacs can expand when a breath is inhaled and there are a bunch of capillaries lining the air sacs that exchange gas through the cells in the air sacs. Gills don't really expand like that. They're flexible but they don't increase in volume nearly to the degree that lungs can. Gills are also very delicate and are dependent on the surrounding water for structural support. They can't do their job if the water isn't supporting them. They still perform gas exchange, but in the case of gills, the gas comes from the oxygen dissolved into the water. This also means that there has to be gas dissolved in the water or the fish will die from oxygen deprivation.
Lithuim t1_iy8n7fm wrote
Reply to comment by TheRealOrous in ELI5: why fish can’t breathe in air despite air having plenty of oxygen by CR1MS4NE
A fishtank full of rowdy corydoras catfish! …and a background in chemistry.
Wickedsymphony1717 t1_iy8n4yo wrote
Reply to ELI5. Why do active noise cancelling headphones/earbuds not protect your hearing? by mostofit
A few reasons, 2 really noticeable ones. The first and most important is that in order to make that claim you need to prove it under scientific conditions and testing, which is expensive and time consuming. Product manufacture don't want to waste money on that if it's not their intended goal, especially considering most headphone companies put out new products regularly, and each one would need to undergo that testing.
Another important thing is that active noise canceling works not by blocking sound but by creating sound waves that destructive interfere with the outside sound waves. This means they (in theory) should be emitting sound waves of the same amplitude and frequency just 180° out of phase of the incoming sound to be blocked. While this would technically make the sound dampened, it is a much greater risk to the user because suddenly you have 2 loud sound waves being directed at your ear, and if the active noise dampening fails for some reason, suddenly they're not working to protect your hearing at all. This is why passive hearing protection is much safer than active. Passive is usually when a material just blocks the sound from reaching your ear at all.
dozure t1_iy8mj6u wrote
Reply to comment by [deleted] in Eli5: Mortgage rates by sanevsnormal27
> I will just note that UK mortgages are unique
What's unique about them?
[deleted] t1_iy8m9e4 wrote
Reply to comment by [deleted] in ELI5: Uvalde and the "coward" cops by MarBoBabyBoy
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pegasBaO23 t1_iy8ldsd wrote
Reply to comment by Youngheezy182 in ELI5: Why do condoms have so many different types (invisible, extra safe, feel thin, etc). How do you know which one to pick? by [deleted]
>A different shoe isnt gonna make or break michael jordan when he steps onto the court
Categorically untrue, there is a reason soldiers wear combat boots, laborers wear wide shoes with iron reinforcements, and athletes wear sneakers.
TheRealOrous t1_iy8la07 wrote
Reply to comment by Lithuim in ELI5: why fish can’t breathe in air despite air having plenty of oxygen by CR1MS4NE
Thanks for the knowledge friend! I suspected that it was something to do with our warm blooded nature, nice to see it as a side by side comparison.
One last question, what sub section of learning gave you this information to so readily share with me?
ThunderChaser t1_iy8k5ig wrote
mostofit OP t1_iy8juhm wrote
Reply to comment by Ippus_21 in ELI5. Why do active noise cancelling headphones/earbuds not protect your hearing? by mostofit
okay yes this is what i’ve heard as well. ( i work in a wood shop) but again i don’t really understand why. the noise cancelling makes it sounds so quiet. why doesn’t it help?
homeboi808 t1_iy8jm3z wrote
Reply to Eli5: Mortgage rates by sanevsnormal27
When you make the required monthly minimum payment, you are paying towards both the principal (loan amount) and the interest added.
At the beginning, the majority of the payment is going towards the interest and then the ratio slowly changes so that towards the end, it is the principal that is what most of the payment is for.
When the interest rates change, they look at how much principal is left and then redo the payment amount with the new percentage and years left. So, if you have $65,000 left and you've been paying for 5 years, then it's the same math as a $65,000 loan on a 25yr repayment. So look at how much principal is left on the loan and then the time left on the 30 years.
Now, your monthly payments are sometimes locked in until you hit a "trigger" where the monthly payments need to be adjusted. If it isn't adjusted, then you keep paying the same monthly but then have balloon payments or longer payoff length (more than 30 years).
WebW3b OP t1_iy8j4ca wrote
Reply to comment by Fellainis_Elbows in Eli5, how do contracted Blood Vessels lead to Increased Cardiac Preload? by WebW3b
Got it. Lots of Thanks !
Ippus_21 t1_iy8iw5j wrote
Reply to ELI5. Why do active noise cancelling headphones/earbuds not protect your hearing? by mostofit
Hearing protection actually blocks out sound pressure (which causes direct physical damage to some parts of the inner ear).
Noise-cancelling doesn't do that. Noise cancellation technology makes noise of its own, designed to create an interference patter with sounds you hear so that they don't register as noise.
So... if you're going to be in an industrial or other loud environment (concert, shooting range, trainyard, etc) where you're exposed to problematic decibel levels, choose actual hearing protection, not noise-cancelling tech.
shellshocktm t1_iy8i8m4 wrote
Reply to ELI5. Why do active noise cancelling headphones/earbuds not protect your hearing? by mostofit
Don't know what everyone is saying here because ANC was actually developed for the aviation industry specifically to protect pilots' hearing. The ones that are commercially available just aren't good enough to be protective to that degree. A good pair will be expensive and work well to block out noises and reduce the exterior loudness.
HazelnutDesert t1_iy8hsjl wrote
A bunch of clever stuff goes into that! The entire world isn't really there at one time. Only the area you're in, and it will dynamically load the other areas when you get near. Reuse of assets and textures and stuff can make things way more efficient to store (e.g. storing one grass texture for every grass block in minecraft). Storage is just really optimized so you don't have to save a lot of data to represent the state of the world; just enough to rebuild world when you need it
Sing_larity t1_iy8hjhi wrote
Reply to comment by MarBoBabyBoy in ELI5: Uvalde and the "coward" cops by MarBoBabyBoy
https://www.youtube.com/watch?v=0ioaBG3K_dk
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https://www.npr.org/2022/11/02/1133468064/uvalde-texas-shooting-911-calls
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https://twitter.com/msnbc/status/1547750084959318017
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Children died on route to hospital. Children were shot AFTER the cops arrived. Children were still alive after the cops arrived. The cops inaction is completely indefensible.
Even if not a single kid had died as a result of the inaction, which they did, it would still be indefensible cowardice. Because the cops wouldn't have known that at the time. Even if no kids HAD died as a result, that doesn't change the fact that the cops pussying out put the lives of children at risk.
Fellainis_Elbows t1_iy8elyj wrote
Reply to comment by WebW3b in Eli5, how do contracted Blood Vessels lead to Increased Cardiac Preload? by WebW3b
Mostly right. The more technical explanation is that blood is squeezed from the arterial space into the venous space. Veins return blood to the heart -> therefore increased preload
[deleted] t1_iy8ebzz wrote
Reply to comment by [deleted] in ELI5: Uvalde and the "coward" cops by MarBoBabyBoy
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MarBoBabyBoy OP t1_iy8e9te wrote
Reply to comment by Sing_larity in ELI5: Uvalde and the "coward" cops by MarBoBabyBoy
> Who do you think was doing the screaming and crying in the video footage of the cops standing around if all the kids were already dead
Where are you getting there were kids "screaming and crying" while the cops stood around? They were either dead or playing dead. All the kids who called 911 from inside the classroom survived.
I can't find any evidence any injured kid bled out or could have been saved by breaching early.
Again, I'm not saying the cops didn't make mistakes but they shouldn't be blamed for all the deaths.
Bunsbunsbunsbunnyboi t1_iy8e6qj wrote
Reply to comment by MarBoBabyBoy in ELI5: Uvalde and the "coward" cops by MarBoBabyBoy
Hey buddy you can keep being a bootlicker but the fact of the matter is, there were kids laying on the ground dying and if the cops went in and did heir jobs they wouldnt be, Ok?
They found the fucker dead and in a back room because he wasnt in the same room as the kids for as long, he was in a closet space waiting for the cops and children died as they fucked off on their phones.
Yeah they should be blamed.
Jkei t1_iy8e2nw wrote
Reply to comment by uwhyaw in ELI5: why scientific reasearch are not free to public by Purple_zither
These are fair points. I agree journals aren't entirely pointless, and that part of the blame in perpetuating this system lies with academics themselves. Watching your new paper doing numbers in Nature is something most would not pass up, even if there were alternatives that are more ethical in this sense. Disrupting that kind of status quo and trusting new platforms is always going to be hard, but I hope the push against the classical for-profit publishers continues.
Sing_larity t1_iy8dz4f wrote
Reply to comment by MarBoBabyBoy in ELI5: Uvalde and the "coward" cops by MarBoBabyBoy
It's entirely fair to blame the cops for every single kid who died after they arrived. Which is a non zero number. And frankly, at the point where the cops are directly responsible for a non zero number of children's deaths is when the actions of the cops become completely and utterly indefensible.
obolulu t1_iy8dwt0 wrote
Reply to comment by tblism in ELI5: why fish can’t breathe in air despite air having plenty of oxygen by CR1MS4NE
because they are the ultimate lifeform
MarBoBabyBoy OP t1_iy8dwfo wrote
Reply to comment by Bunsbunsbunsbunnyboi in ELI5: Uvalde and the "coward" cops by MarBoBabyBoy
Listen to this video:
https://youtu.be/B_W_SopPUGE?t=277
The shooter enters the classroom and unloaded almost non-stop. There is no way it took him 2.5 hours to kill 19 kids. He shoots almost non-stop, probably stopped to reload, before any cops arrived.
This is what doesn't make sense to me, why the cops are being blamed for all the deaths.
Twin_Spoons t1_iy8dua0 wrote
Reply to Eli5: Mortgage rates by sanevsnormal27
Interest rates are rising quickly everywhere due to the efforts of central banks to bring down inflation. Essentially, the central bank in the UK is making it more expensive for regular banks to borrow money. In a sense, those regular banks borrowed the money for your house from the central bank, so they're seeing the exact same kind of squeeze you're seeing, only they can pass it on to you by raising your rates.
Every bank is getting squeezed like this, so it will be impossible to find a rate like the one you had a few years ago. However, it could be worth it to talk to a competing bank to see if they can offer you better than your current bank. In an era of rising prices, some businesses will try to raise theirs higher than necessary and hope nobody notices, and the best way to police this is with competition.
[deleted] t1_iy8nr2k wrote
Reply to comment by dozure in Eli5: Mortgage rates by sanevsnormal27
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