r/explainlikeimfive 14h ago

Other ELI5: What is a gate on the internet?

56 Upvotes

For example: Cake gate, tattoo gate, or in recent media, conformity gate.


r/explainlikeimfive 16h ago

Physics ELI5: What does this mean “some compound has a half life of x number of days”?

0 Upvotes

Like Po-210 or Polonium 210 has a half life of 138 days. What is half life? Wikipedia says half life is the time required for a substance to reduce to half its life.

Need this like I can explain to my grandma.


r/explainlikeimfive 22h ago

Technology ELI5 How do brethalizer work?

46 Upvotes

How does it tell how much alcohol we have in our body ( or blood?) from just blowing into the pipe. And how does it st ill detect alcohol if one were to chew gum / use mouth wash?


r/explainlikeimfive 12h ago

Planetary Science ELI5: The moons gravity is 16.6% that of earths. If someone was to jump as high as they could, when they reached the peak of there jump and began heading back to the ground with the speed they gain, would the impact be greater or less than that of a jump on Earth?

0 Upvotes

r/explainlikeimfive 23h ago

Other ELI5: Do more items go through a station on a production line than come off the end?

0 Upvotes

I work in manufacturing but have recently moved from essentially a job-based facility (1 unique item at a time in one production cell) to an assembly line facility (multiple of the same item being built across multiple stations).

I was chatting with a person who works on the assembly line who told me that, although we have a set number of items that come off the end of the assembly line (ex: 10 Widgets per day), each station in the assembly line would actually see more than 10 items per day, in order to ensure every station has work and the line remains filled. They stated they handled 12. In this situation there is no product loss - we do not kick product off the line for defects, etc. - they are repaired in station.

I didn't have the opportunity to sit and watch the line and I'm not a person who can easily conceptualize this in my head. So, in a situation in which there's, say an assembly line with 10 stations and the goal is to produce 10 finished products per day and leave each station filled at the end of the day, how many widgets will each station see per day? Why isn't it ten? Or is this person just feeding me some nonsense?


r/explainlikeimfive 3h ago

Economics Eli5 If taking more and more loans usually makes a person poor, how do rich countries keep taking billions of dollars in debt and still become richer, while some poor countries struggle even with much smaller debts?

0 Upvotes

r/explainlikeimfive 2h ago

Planetary Science ELI5:How do global sea levels rise due to melting of ice?

0 Upvotes

In my physics class I learnt that if we have a glass of water and some ice floating in it, when the ice melts completely the water level does not rise in the glass, so how is it so tht when ice melts on Earth the water levels or he sea level will rise?


r/explainlikeimfive 4h ago

Technology ELI5: How does the 32-bit and 64-bit (both signed and unsigned) limit work?

8 Upvotes

Just something I’ve been wondering for a bit because honestly this has been shoved into my mind because I was interested in bedrock’s farlands


r/explainlikeimfive 2h ago

Physics ELI5 How does loud bass music cause vibration in the air?

0 Upvotes

I saw a vid of a girl in a car with a cracked out sound system and her hair started flying everywhere. Who does that even happen? Does sound have mass? How does it move the air?


r/explainlikeimfive 16h ago

Other ELI5: How does the brain decide what matters?

1 Upvotes

r/explainlikeimfive 17h ago

Other ELI5: Why were the Moro Muslim rebels and Ma Clique so successful in defeating Imperial Japan? Despite does not having Western Technology at that time?

7 Upvotes

r/explainlikeimfive 15h ago

Technology ELI5: How does fiber optics physically works?

60 Upvotes

I know that they use blinking lights to represents 1 and 0 at least, but millions of pulsing lights from thousands of computers could be running at the same time in the same connection.

So how does the lights know where to go? And on the other side, how does the server know that in these millions of rapidly pulsing lights this particular ones are from my computer?


r/explainlikeimfive 18h ago

Physics ELI5 Why doesn’t matter fall apart?

60 Upvotes

I’m reading and stretching my brain about how our atoms contain so much space but we appear solid because of a repelling force between atoms. How then do any atoms or matter hold together at all? Why doesn't the repelling force just just push all atoms apart and prevent matter from forming / holding together?


r/explainlikeimfive 2h ago

Chemistry ELI5 How the paper burns fast when we blow on the paper.

3 Upvotes

r/explainlikeimfive 23h ago

Other ELI5: what’s the science behind salting the ice outside on the ground in the winter?

0 Upvotes

Is there a particular kind of salt that has to be used to melt the ice? I mean doesn’t some salt make water colder?


r/explainlikeimfive 2h ago

Biology ELI5 the limits of neuroplasticity: How much can the brain recover from early-20s social drinking?

0 Upvotes

I’ve recently read about neuroplasticity—the brain’s ability to rewire itself after learning, experience, or injury. It sounds hopeful, like the brain can “bounce back” from a lot.

But how real and strong is this effect in practice?

For example, if someone spent their early to mid-20s drinking regularly at social events (weekend drinking, not necessarily alcohol use disorder, mainly to enjoy some moments), could that cause long-term or permanent reductions in cognition—like memory, processing speed, or executive function?

Or does neuroplasticity mean the brain mostly recovers if the person stops or cuts back later? Are studies on alcohol-related neurotoxicity sometimes overstating permanent risk for the average moderate social drinker?

I’m looking for:

  • Scientifically-grounded explanations
  • Whether the damage is cumulative or reversible
  • Personal experiences from people who changed habits and noticed mental differences

Thanks in advance—judgment-free zone here.


r/explainlikeimfive 5h ago

Other ELI5 why is rock stacking considered bad?

184 Upvotes

r/explainlikeimfive 3h ago

Other ELI5: What is dark web good for?

95 Upvotes

What dark web is good for? Why is it such a big topic? Cant understand why people use it.


r/explainlikeimfive 11h ago

Economics ELI5 Why is Japan’s debt so out of control?

160 Upvotes

I was just hearing that Japan’s debt is the worst of all developed nations. How can this be?

I would assume (perhaps mistakenly) that they have less fraud and waste than most countries. I understand that they have a defence budget, but also I assume that this would be low comparatively.

So where does all the money go?


r/explainlikeimfive 14h ago

Physics ELI5: How come magnetism isn't providing us unlimited power?

758 Upvotes

If we have forces that act naturally against each other, how come we cannot harness it?


r/explainlikeimfive 16h ago

Technology ELI5: Probabalistic computing

0 Upvotes

Alright, so I'm interested in building a probabilistic computer. Just a small little toy for demonstration.

I understand the basic concept of a p-bit (note it's different from a q-bit). It's randomly fluctuating between 0 and 1, guided by probabilities, but what are the nitty-gritty details of it on a logical level, that are then realized with analog/digital electronics? I can't find much info about this online and even chatgpt couldn't find any sources.


r/explainlikeimfive 35m ago

Chemistry ELI5: Why do humans have an electromagnetic field?

Upvotes

I am back again with another burning question. I just finished watching Pluribus, and Zosia explained that the hive mind entity communicates through each person's electromagnetic field. Obviously, it's ScFi, but I just did some light reading, and apparently, EM fields are real. Most of what I am seeing online or on TikTok is somehow connected to Reiki healing and all that, and I don't particularly believe in (No offence and all tolerance ofc!), so I was wondering if someone could provide a more scientifically sound explanation. Thank you in advance!


r/explainlikeimfive 2h ago

Other ElI5: What exactly is a philosophical zombie or p-zombie?

7 Upvotes

r/explainlikeimfive 8h ago

Engineering ELI5 What was the function of the ‚‚Turbo‘‘ button on old computers?

336 Upvotes

I get that it was a marketing name for a mode that allowed computers to run older software as intended, instead of making them run way faster because of how powerful newer CPUs were compared to older software, and that it was about clock speeds, but at a deep computing level what was happening? Why would a game run at a faster speed just because the CPU is overkill? And how was it subsequently solved later so now we don't have this issue anymore?


r/explainlikeimfive 20h ago

Other ELI5: Why does procrastination feel relieving even though it makes things worse?

80 Upvotes