Recent comments in /f/explainlikeimfive
TucsonTacos t1_iugq882 wrote
Reply to comment by [deleted] in ELI5 Why are airport ceiling so high? by TrShry
I'm not an engineer nor had any part in designing the MoA. I have no idea how its heated or not heated at night.
Fortune_Silver t1_iugq6vb wrote
Reply to comment by Shadowcat514 in ELI5 How did knights participate in tournaments like jousting without killing themselves? by QuantumHamster
This, people did die, but they also wore full plate, and used blunted wooden lances designed to (hopefully) shatter instead of pierce, and there were rules about where you had to aim, usually the breastplate etc so that your hitting the strongest part of the armor. You were trying to knock the guy off his horse, not kill him.
That said, you still have two men on horses charging at each other with large wooden sticks that you were aiming the best you could amidst all the horses movement jostling you around. Accidents happened. Sometimes people died. But at the time, the fame and prestige you stood to earn was seen as worth that risk, especially if you were only minor nobility or a commonor, if you could make a name for yourself it could transform your life.
The_RealKeyserSoze t1_iugpzap wrote
Reply to comment by Narsil86 in ELi5: Why specifically is it oxygen that is required for life? by West_Theory3934
The oxygen is converted to H2O not CO2 in aerobic respiration. The CO2 comes from the pyruvate/food.
DamionDreggs t1_iugpvk8 wrote
Reply to comment by guess_an_fear in ELI5: Why is it easy to drink a large volume of beer, compared to such a large volume of any other liquid? by Proof_Objective_5704
I'm trying to touch on that addictive quality that keeps you coming back for more, even when you really should be done. When I say satisfies a kind of hunger, I mean it feels good, not 'you're satisfied so you don't want any more'. I can see how my choice of words are confusing though. Sorry about that.
Comprehensive_Tap131 OP t1_iugpp4l wrote
Reply to comment by abat6294 in ELI5: I was looking into gravity and energy and discovered why you can't harness energy from gravity. Carry bowling ball up a hill, let it fall from a cliff, the energy doesn't come from gravity, but from you carrying it up the hill, potential energy? I then pictured it as charging aKamehameha? ELI5 by Comprehensive_Tap131
Literally not energy from gravity, scientifically
Edit: That energy comes from sunlight
ordinary_kittens t1_iugpnj5 wrote
Reply to comment by TucsonTacos in ELI5 Why are airport ceiling so high? by TrShry
It must be heated at night in the winter though, to keep pipes from freezing? Minnesota will routinely get to 10 degrees, even zero degrees, in the middle of January at night.
Crescendo_BLYAT t1_iugpnhv wrote
Reply to comment by Klai8 in ELI5 Why are airport ceiling so high? by TrShry
symbolic welcome mats to tourists & there's TSA agents ruining for everyone else 😑
bartolemew t1_iugpm50 wrote
Reply to comment by breckenridgeback in ELI5: if Earth rotates so fast, why does it always look still from outer space? by ShesOver9k
Their explanation is perfect and illustrates it well enough, considering this is EILI5.
The_RealKeyserSoze t1_iugpfn5 wrote
Reply to comment by GrumpyOldLadyTech in eli5 - If our cells only turn a certain amount of times before we die. Does causing micro damage from resistance training shorten our lifespan? by aus_ben93
Also telomeres are more relevant for the Hayflick limit, they are more of an effect and not a primary cause of aging on the level of whole organisms.
aus_ben93 OP t1_iugpbw3 wrote
Reply to comment by GrumpyOldLadyTech in eli5 - If our cells only turn a certain amount of times before we die. Does causing micro damage from resistance training shorten our lifespan? by aus_ben93
You seem to really know your stuff! Thank you so much 🙂
wah_bsdk OP t1_iugoyu8 wrote
Reply to comment by Chromotron in ELI5: Why do we have real numbers with one term, complex numbers with two terms, quaternions with four terms, octonions and so on, and nothing in between? by wah_bsdk
wow, thanks for this detailed answer. my head might just explode and it will take me days just to digest your response but that's how I feed my curiosity. also about the cross product, I had noticed once before that it only works in 3D but this seems like an interesting rabbit hole.
FriendoftheDork t1_iugou7g wrote
Reply to comment by TucsonTacos in ELI5 Why are airport ceiling so high? by TrShry
Must suck for the employees opening up though.
AZymph t1_iugotu1 wrote
Reply to ELI5: Why can’t we make spaceships that are seen in shows like Lost In space? I’ve never been able to understand this. by FoxLoser
We don't have enough study on the effect on humans or the levels in deeper space yet to create radiation shielding safe enough to venture far in space, nor the technology to power engines & life support to travel fast enough to make proper space travel feasible (plus the constraints of storing enough fuel, food and other supplies to travel that far). For example, Voyager 2 took 50 years to exit our solar system. Our communications systems are also not yet advanced enough for a mission of such, taking 16 hours to reach or return from Voyager (utterly useless in a true emergency)
sharr_zeor t1_iugoqc1 wrote
Reply to comment by HazeThere in ELI5: How do plants know that they will be eaten and therefore their seeds will be spread and regrow? by HazeThere
It's the same, they just ended up adapting differently.
The basic premise still applies, one plant mutated to be sweet/sour/bitter/spicy etc It's neighbour plant mutated to be less so
Animals/humans liked one version more, and liked the other version less, so those plants get eaten, and the seeds get spread
In some cases, humans specifically liked certain tastes so we manually selected and bred plants with specific mutations and variations to get the flavours we wanted
Comprehensive_Tap131 OP t1_iugooq8 wrote
Reply to comment by Em_Adespoton in ELI5: I was looking into gravity and energy and discovered why you can't harness energy from gravity. Carry bowling ball up a hill, let it fall from a cliff, the energy doesn't come from gravity, but from you carrying it up the hill, potential energy? I then pictured it as charging aKamehameha? ELI5 by Comprehensive_Tap131
To take advantage of gravity for energy you need to go from am area of high gravitational potential to lower gravitational potential. Do the highest levels of Earth's atmosphere contain enough potential to take advantage of an area of high gravitational potential moving to an area of lower gravitational potential?
cocompact t1_iugobdo wrote
Reply to ELI5: Newton's third law by AppropriateFeeling44
If your question is about how anything can move at all "by Newton's third law", please see https://physics.stackexchange.com/questions/45653/given-newtons-third-law-why-are-things-capable-of-moving
Comprehensive_Tap131 OP t1_iugo9ma wrote
Reply to comment by abat6294 in ELI5: I was looking into gravity and energy and discovered why you can't harness energy from gravity. Carry bowling ball up a hill, let it fall from a cliff, the energy doesn't come from gravity, but from you carrying it up the hill, potential energy? I then pictured it as charging aKamehameha? ELI5 by Comprehensive_Tap131
Basically asking as you carry that bowling ball up hill to a higher altitude are you simply storing potential energy? To be released whenever? Bowling ball sits there for 100 years until ground erodes and it then flies down to sea level or whatever. Is that really simply the storage of potential energy? I put energy in that bowling ball by carrying it uphill?
DrCortx t1_iugo8qh wrote
Reply to ELI5: Why can’t we make spaceships that are seen in shows like Lost In space? I’ve never been able to understand this. by FoxLoser
Super simple version is 1) we don’t yet have the tech to travel even through empty space at a rate that would be worthwhile. And 2) we DO have the tech to build massive space ships, but the financial cost is currently too great, with too little reward, for it to be worth doing so.
Phage0070 t1_iugo5oe wrote
Reply to ELI5: Why can’t we make spaceships that are seen in shows like Lost In space? I’ve never been able to understand this. by FoxLoser
Your submission has been removed for the following reason(s):
ELI5 is not for straightforward answers or facts - ELI5 is for requesting an explanation of a concept, not a simple straightforward answer.
If you would like this removal reviewed, please read the detailed rules first. If you believe this was removed erroneously, please use this form first. If you believe this was removed erroneously, please use this form and we will review your submission.
Luckbot t1_iugnyh6 wrote
Reply to ELI5: Why can’t we make spaceships that are seen in shows like Lost In space? I’ve never been able to understand this. by FoxLoser
The issue with spacetravel is that A: getting off planets is extremely difficult, and B: distances are extremely long.
All technology that exists right now forces us to burn a high multiple of fuel in your weight to get away from earth (if you weight 100lb then you need about 1500lb of fuel just to get you off the planet, and the same applies for everything you want to take with you, on smaller planets it's a little better though). Escaping gravity is a tough task.
The other issue is that space is huge. To get to Mars with the current in technology we take about 3 months. To get to the nearest other star at the maximum physically possible speed you take 4 years!
azuth89 t1_iugnqkx wrote
Reply to ELI5: Why can’t we make spaceships that are seen in shows like Lost In space? I’ve never been able to understand this. by FoxLoser
The really big ones? We could build something large, technologically speaking, but we couldn't boost something like that out of atmo. So we'd have to spend ludicrous resources launching construction equipment to build the construction equipment to build something that large and then boost up all the materials to do so. The cost would be astronomic and then....what? We don't have the propulsion tech to go much of anywhere with it.
If you mean the actual full ship rather than just the size....honestly they're packed with tech we don't have and I'm not sure where to start.
cantonic t1_iugnprn wrote
Reply to comment by Lab_Member_004 in ELI5 Why are airport ceiling so high? by TrShry
A bunch of the DLC are just radio and custom building little DLC. I think there are a total of 12 legitimate expansions, but none of them are necessary to enjoy the game and it has thousands of quality mods available for free.
napncrash t1_iugnia1 wrote
Reply to ELI5: Newton's third law by AppropriateFeeling44
Forces, the way Newton described them, change motion.
So when you throw a tennis ball against a wall, the tennis ball obviously applies a force to the wall.
What's less obvious is that the wall applied a force to the tennis ball. Did the motion of the ball change? Yes it did. What caused it? The wall. So, using Newton's terms, the wall applied a force to the ball.
Turns out, the wall applies the exact same amount of force back as the ball applied forward.
*EDIT: The comments below are excellent expansions. The wall doesn't seem to move, but there are vibrations throughout the wall (and so on) that account for that force. And yes, many other forces are acting on the wall.
EXPLAIN IT TO ME LIKE I'M 10: Maybe it's better to say "forces affect inertia - they can help or hurt it."
OneAndOnlyJackSchitt t1_iugnbni wrote
Reply to comment by Lab_Member_004 in ELI5 Why are airport ceiling so high? by TrShry
I've never used any of the paid DLC stuff. I might at some point, but it's certainly not required by any means.
Lots of totally free mods, though.
Edit to add: The paid DLCs add new mechanics to the base game and are basically the same as old school expansion packs were for offline games. It's not like that lootbox bullshit or anything scammy. Also, these DLCs are ongoing development. Game's been out since like 2015 and they just release a new DLC last month.
Also, I'll add that I am not affiliated with Colossal Order (developer) or Paradox Interactive (publisher) and this is not a paid advertisement. I just really like the game, just not enough to pay for DLC.
Mike2220 t1_iugqcfy wrote
Reply to comment by Fortune_Silver in ELI5 How did knights participate in tournaments like jousting without killing themselves? by QuantumHamster
>Accidents happened
"Accidents" as well