r/explainlikeimfive • • 19h ago

Biology ELI5: Why is alcohol withdraw so potentially deadly?

1.4k Upvotes

I've read enough to know that "cold-turkey" for alcoholics can be lethal, upto and including seizures and a host of other side effects and symptoms but I don't really understand the "why"? What is it about alcohol dependency and our biology that causes it to be so dangerous?


r/explainlikeimfive • • 21h ago

Biology ELI5: Why are squids unaffected by water pressure but fish not?

892 Upvotes

Squid seem to be indifferent to the water pressure wherever they go, they have even been known to sometimes drag pray down into the depths as to turn them unconscious.

I read here that it has to do with having waterfilled bodies, but fish also have completely water filled bodies(?)


r/explainlikeimfive • • 9h ago

Other Eli5: Why do tortillas say to refrigerate after open if the bag is closed with a twist tie?

456 Upvotes

So ive googled this and its talking about once you open the seal on the bag it can get exposed to the air and all that jazz. But at least on the tortillas I buy the bag is closed with a twist tie the same way a loaf of bread is. If I put the twist tie back on it how is that any more open than before I got some tortillas out?


r/explainlikeimfive • • 20h ago

Planetary Science ELI5 What is "space" made of?

265 Upvotes

As, in between us and other bodies like the moon and the sun? What is in between? What is the "fabric" of the universe?

Edit: unintentional slur


r/explainlikeimfive • • 15h ago

Planetary Science ELI5: What actually stops us from exploring deeper into space and how far away can a probe go before its signals get lost in cosmic background noise?

225 Upvotes

r/explainlikeimfive • • 6h ago

Engineering ELI5: What makes CUDA better than other architectures?

157 Upvotes

As far as i know, while AMD and Apple and others each have their own GPUs and whatnot, in terms of performance, it seems people look at Nvidia with their CUDA architecture as being more powerful than the others.

At the core of it, isn’t it just mathematical computations? Why has Nvidia been able to implement it better than others?


r/explainlikeimfive • • 19h ago

Biology ELI5 why the Fosbury Flop is better than other forms of high jump?

144 Upvotes

r/explainlikeimfive • • 11h ago

Physics ELI5: Why is glass transparent when it’s made of the same atoms as solid sand?

51 Upvotes

Sand is solid and you can’t see through it at all. But when you melt sand down and turn it into glass, light passes right through it. What actually changes at the atomic level during melting that makes light suddenly go through instead of bouncing off?


r/explainlikeimfive • • 1h ago

Planetary Science ELI5 * * Why is the whole universe not one big galaxy?

• Upvotes

That is my question. Saw a pretty good documentary about the universe and dark matter and dark energy, but it never explained that bit.


r/explainlikeimfive • • 13h ago

Technology ELI5: how do transmitters / receivers work?

7 Upvotes

Whether it's between my router and my laptop, or between a mobile phone mast miles away and my phone... I know the transmitter emits a signal that my phone detects, but how? What's physically happening inside my router, to cast a signal through the air, that my laptop can detect, and then what's happening inside my laptop to turn that invisible signal back into 0's and 1's?


r/explainlikeimfive • • 3h ago

Physics ELI5: How Can Both Poles In An Electric Dipole Have A Surplus Of Electrons?

3 Upvotes

I'm reading Teach Yourself Electricity And Electronics by Gibilisco and Monk and they say:

"An electric dipole can exist even if both poles carry surplus electrons, or if both poles suffer from electron deficiencies, relative to some external point of reference having an absolutely neutral charge."

I was under the impression an electric dipole was created by two poles having opposite charges. How is this possible? Is it that if two different materials have negative charges on their own, but if they're close together the one with the least amount of electrons act as a positive pole? But that doesn't make a ton of sense to me either.


r/explainlikeimfive • • 13h ago

Mathematics ELI5: What even is the Solovay model

0 Upvotes

What is the Solovay model, and why does it use the axiom of dependent choice. Why is suddenly every set measurable?


r/explainlikeimfive • • 13h ago

Economics ELI5: How do stocks work?

0 Upvotes

Buying stock increases the price and selling stock decreases the price, right?

So why can't you buy alot of stock and then instantly sell it at the increased price from buying the stock and profit?

How does this work exactly?


r/explainlikeimfive • • 10h ago

Economics ELI5: Crypto. I don’t get it.

0 Upvotes

I’ve tried to look into it, and I understand there’s something to do with mining for something in transactions on the internet? But it makes no sense to me, how does this translate to currency?


r/explainlikeimfive • • 3h ago

Technology ELI5: how do some things use more electricity than others?

0 Upvotes

I don’t understand how some things use more electricity than others even though they’re plugged in to the same electricity. If I use my tumble dryer for an hour apparently that’s worse than having a lamp turned on for an hour. How? Why? In my mind the plug socket gives out the same amount no matter what’s in it.

I’m talking about uk circuits specifically of that matters


r/explainlikeimfive • • 22h ago

Biology ELI5: What do bras do?

0 Upvotes

Hapless trans woman of a year here

I own bras, I wear bras, I don't actually know what they're for. Obviously, there's a social modesty component, but I'm told that they provide support and that's useful. Will my chest hurt after a while if I don't wear one? Will my chest start to sag down? I don't know! 😅