Recent comments in /f/explainlikeimfive
HunterDHunter t1_j6m8ui6 wrote
Reply to comment by Gnonthgol in Eli5 Why can’t Stars use Iron in nuclear fusion? by Drippidy
Heavy elements are also created in supernova explosions. I think that's where most of them come from as opposed to fusion within a star.
[deleted] t1_j6m8src wrote
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[deleted] t1_j6m8r21 wrote
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bal00 t1_j6m8po9 wrote
Libraries could provide an unlimited number of digital copies, but publishers don't allow that unless they buy additional copies. So it's just part of the contract. If publishers allowed unlimited checkouts, then very small libraries that only have one or two copies checked out at the same time would be paying the same price as much larger libraries that may have 50 copies checked out at the same time.
If the publisher still wants to make the same amount of money even though everyone is paying the same price, small libraries would have to pay much more, and large libraries would pay much less.
Hesk121 t1_j6m8klp wrote
My understanding is the heating the propylene glycol and glycerol in e-liquids creates compounds that release toxic chemicals that are harmful to you with and without the additions of nicotine or THC source. So in short still bad. Short term can cause inflammation, lung and throat irritation, I’m sure there’s more data on long term but cbf finding it.
THC additions have been shown to create a “sticky substance” in your lungs which can lead to further lung injury source. EDIT: THC when paired with vitamin E acetate as thickening solution not THC on its own
Nicotine additions bring in all the side effects of having nicotine in your system. Including an increase in blood pressure, heart rate, flow of blood to the heart and a narrowing of the arteries. Plus a general risk of addiction leading to more vaping and the higher chance of starting smoking.
ELI5 smoking the vapour is as bad and will result in damage to the lungs and throat, but no side effects or issues that come with the addition of nicotine or THC.
tm0587 t1_j6m8jmn wrote
Reply to comment by Freedom-No-781 in ELI5 - When losing weight, why is it common to hear "burn more than you consume" in reference to calorie intake. if you consume" 1000 calories, how do you burn 1500? by Freedom-No-781
You continue to burn more calories than resting AFTER you stopped working out so that's something to consider for your calculations.
Also, putting on muscles means your resting calorie count go up too.
positive_charging t1_j6m8jbs wrote
If you show content to more than i think 10 people at the same time you are publicly broadcasting the content and need to pay the copyright holders a fee.
Netflix pays the owners a fee to stream the content to as many folk as they want.
The library probably has a limited licence, so they can only have so many copies distributed at the same time.If they exceed this, they can be libel for copyright infringement and will be sued to high heaven.
jeihot t1_j6m8d90 wrote
tm0587 t1_j6m8c3v wrote
Reply to comment by Oaden in ELI5 - When losing weight, why is it common to hear "burn more than you consume" in reference to calorie intake. if you consume" 1000 calories, how do you burn 1500? by Freedom-No-781
The trick is also to get your body to burn fats rather than muscles, which can be tough.
Hence when someone says he wants to lose weight, I will tell him that he should concentrate on losing body fats than weight.
A good eg is me (mid 30s) vs my dad (high 60s).
He is lighter than me and appears skinny but he has a higher body fat % (22%) than me (18%).
Gnonthgol t1_j6m8bdi wrote
Iron have the lowest energy in its nucleus of all the elements. If you fuse hydrogen atoms into helium the resulting helium atom have less energy then the hydrogen atoms you started with so the rest of the energy is released into the star. As you fuse together elements up the periodic table you always end up with more energy left over until you get to iron. If you fuse iron and hydrogen for example the resulting cobalt require more energy to hold its nucleus together then the iron and hydrogen atom combined, so you need to put more energy into the fusion then you gain from it. It is still possible to do this, in fact that is how all the cobalt and other heavy elements are made. But it reduces the amount of energy in the star instead of increase it so this is a very short lived period in a stars life.
BlueParrotfish t1_j6m887e wrote
Hi /u/Drippidy!
In order to explain this fact, we have to understand binding energy:
Probably the most famous equation in physics is E=mc². It tells us that mass is a form of energy and can, therefore, be transformed into other forms of energy (just like p.ex. movement energy can be transformed into thermal energy).
Atomic nuclei are made up of protons and neutrons. Protons hold positive charge and therefore repel each other. The reason why atomic nuclei can nevertheless be stable is, that they are held together by short-range attractive forces called the strong force and the weak force. If this sound confusing, your take-away should be that there are two kinds of forces in atomic nuclei, one kind is attractive and the other is replant. This pull-and-push game means, that there is one combination of protons and neutrons that form the most tightly bound nucleus: Iron. In iron, the attractive forces win against the repellent force by the largest margin, so to speak, forming the most tightly bound nucleus. All other combinations, i.e. nuclei that have both fewer or more protons and neutrons in the core, are less tightly bound than iron.
Therefore, very light nuclei, which have fewer particles in the nucleus than iron, get more stable by gaining protons and neutrons, while nuclei that are larger than iron get more stable by losing protons or neutrons. In physics, being stable is always associated with minimizing your potential energy, so the closer nuclei are to iron, the lower is their energy level. As iron is the most tightly bound nucleus, it is the most stable configuration. Therefore, fusing iron into heavier elements requires considerable energy to be put into the system, rather than gaining energy through fusion as is the case for lighter elements.
zeekoes t1_j6m84oh wrote
You know how your saliva has enzymes that help break down foodstuff? So does pineapple. While you're breaking down the pineapple a bit with your enzymes, the pineapple is doing the same to your tongue. That's what makes it tingle.
DrChoopy t1_j6m83n5 wrote
Reply to comment by Exciting_Telephone65 in ELI5: Why do so many fruits have seedless varieties but the apple and cherry do not? by JanaCinnamon
In case of seedless varieties they do not create clones they spread “through cuttings”.
In nature there are plants that self-fertilise and create clones of themselves! They keep the option of cross pollination because plants don’t move and they need an individual able to do said fertilisation.
By creating clones you move in time… and space, so that cross pollination can happen.
*Except if you are peas!! In which case you are perfect the way that you are and you don’t need anybody else! Lol
[deleted] t1_j6m830t wrote
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[deleted] t1_j6m80xv wrote
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ContinuousZ t1_j6m7fu4 wrote
Reply to comment by DragonFireCK in ELI5: What does it mean when a company buys back stocks and why is it frowned upon? by lilly_kilgore
>avoid
You just said avoid. There is no avoiding just delaying. You still have this impression this practice is done purely to "avoid" taxes. You don't pay interest on a huge loan to delay paying taxes.
>If the collateral raises faster than the interest rate, this can be extended to add on more debt load in total. Using this is risky
the banks that are giving out the loans don't like risky
>The loans will also let them do better timing with sells.
You're just reiterating what I just said.
>If they manage to delay the repayment until death
Banks are in it to make money. They aren't going to let Jeff Bezos take out a huge loan and not pay it back for 40 years.
MistahBoweh t1_j6m6kzv wrote
English has this thing called adjective order, which might not technically matter in a lot of cases, but will still sound wrong. Other times, it changes the meaning. In situations like this one, the order doesn’t really change the meaning but it does help the recipient understand the meaning.
In this case, you put the material (brick) before the color (brown). Only, the color describes both the material and the wall, so the color comes first. In a similar fashion, despite (big) referring to the size of the wall, it also gives insight into the size or quantity of the materials used, so it comes before the material. The result, ‘the big brown brick wall,’ is the only way to arrange these adjectives because for the reader, each adjective helps to clarify the next.
A brick wall is a wall of bricks. A brown brick wall is a wall made of brown bricks. A big brown brick wall is a wall made of a lot of brown bricks. Presented like this might help you see why, in this example, the right order helps reading comprehension.
todlee t1_j6m6013 wrote
Reply to comment by todlee in ELI5 Why is desalination so hard? by MiloFrank76
Part 2: Santa Barbara famously built an expensive desal plant in the 90s which was promptly decommissioned because it started raining again. They’ve refurbished it and brought it back on line now.
If a city has multiple sources of water, they can turn to desal (or reverse osmosis of wastewater even) if they are running short. But the initial costs of building such a plant run into the hundreds of millions of dollars. Which raises the cost of water. And guess what? After a certain point necessary for cooking and hygiene, water consumers will cut back on water use if the cost rises. So a city could build a desal plant, then raise rates to pay for it, only to push their customers into conserving enough that they don’t have to run the desal plant. They could’ve just raised rates to manage demand, and not built the plant, saved $300 million, but in places like California it’s illegal to set rates like that.
A lot of California cities, 25%+ of water is used on lawns. That’s the culture after decades of underpriced water. Charge something approaching the real price, and people suddenly don’t want to be responsible for large swaths of ornamental sod any more. Places in the Middle East need desal. Most places in the US would have enough water if it was priced appropriately.
[deleted] t1_j6m5yk7 wrote
Reply to comment by todlee in ELI5 Why is desalination so hard? by MiloFrank76
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zippazappadoo t1_j6m5o14 wrote
Reply to ELI5 - When losing weight, why is it common to hear "burn more than you consume" in reference to calorie intake. if you consume" 1000 calories, how do you burn 1500? by Freedom-No-781
The average person needs about 2000 to 2400 calories a day to maintain their current weight. If you need 2000 calories to maintain your weight but you only eat 1600 in a day then you have a 400 calorie deficit for that day. A pound of fat is about 4000 calories so if you keep eating only 1600 calories a day then after 10 days of doing this you will have a 4000 calorie deficit over those 10 days and will have lost a pound of weight. If you continue this pattern eventually you keep losing weight until you reach a weight where 1600 calories is your maintenance. The opposite is true as well if you eat over your maintenance for calories then you will gain weight until your calorie maintenance is the same as your calorie intake over a long period of time.
TheRomanRuler t1_j6m5ezh wrote
Reply to comment by BobbyThrowaway6969 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
That is actually a good visualization, thank you.
GalFisk t1_j6m51tz wrote
Reply to comment by Pokemonobsessedlesbo in ELI5 - why are bonded pairs okay in animals but not humans? by Pokemonobsessedlesbo
We have a complex stack of control mechanisms. Intellect on top of emotions on top of instincts on top of reflexes on top of autonomous processes (which are layered too). The lower you go the less control you have and the more primitive the capabilities are. Reflexes and below don't even involve the brain.
While instincts are mostly concerned with immediate survival of the individual and the continuation of the species, most interpersonal, society-forming behavior is regulated by emotion. A lot of our identity lies there - belonging, love, likes and dislikes, connection, who we're comfortable with, who we open up to, but also hate, revenge and callousness.
rodolink t1_j6m50cu wrote
Reply to comment by Bit-Tree-Dabook in ELI5 why do your eyes adjust so fast to bright light but so slowly to darkness? by melig1991
crazy i found out this by myself, figured out closing my eyes before entering a dark room and opening them a bit was easier to adjust, finally found the reason thanks to reddit randomness 😎
Minuted t1_j6m4qxp wrote
Reply to comment by corsicanguppy in ELI5: Why does the order of adjectives matter? by AbleReporter565
Why would e-mails be wrong?
Unless you're talking about a single e-mail. I guess the plural of mail isn't mails but e-mail would be a different word. For example we say "I got an e-mail" rather than "I got a piece of e-mail", like we would for physical mail.
Weird discrepancy I suppose, but considering every other way we use the word e-mail, "e-mails" makes the most sense.
Mammoth-Mud-9609 t1_j6m92zk wrote
Reply to Eli5 Why can’t Stars use Iron in nuclear fusion? by Drippidy
It isn't that they don't fuse iron it is that the process of fusing energy with iron and heavier elements is that in fusing them uses energy, which is why with heavier elements when you split them apart they release energy (nuclear fission) https://youtu.be/w1GlDVt1Mpk