Recent comments in /f/explainlikeimfive
Jimid41 t1_jeg1t2c wrote
Reply to comment by urzu_seven in eli5: Why do seemingly all battery powered electronics need at least 2 batteries? by OneGuyJeff
> Strictly speaking, no its not because the words meaning has changed over time, as language often does.
Which is not the case here. It may be common parlance for the layman but they're different for people that use them in industrial settings and they're different according their definitions in the dictionary.
So he's correct. Speaking strictly, it's an oxymoron.
DestrucoMode t1_jeg1puh wrote
Reply to comment by More-Grocery-1858 in ELI5: If the chemical dopamine stimulates a 'feel good' sensation, is there a chemical that makes us angry? by Kree_Horse
I want this on a shirt
Imperium_Dragon t1_jeg1p11 wrote
Reply to ELI5: If the chemical dopamine stimulates a 'feel good' sensation, is there a chemical that makes us angry? by Kree_Horse
The simple answer is that neurotransmitters can activate different pathways depending on the receptors, how parts of the brain are working (such as the hypothalamus), and the affected organs. So dopamine could make you happy and angry, as well as serotonin and norepinephrine.
Potatoe292 t1_jeg1lsq wrote
Reply to comment by psychrolute in ELI5: If benzodiazepines are CNS depressants, why is it so hard to die from a overdose of them alone? by psychrolute
Holy shit dude. I take .25 mg of alprazolam on planes and that does the trick. I can’t imagine taking that much at once.
supapoopascoopa t1_jeg1l0i wrote
Reply to comment by nighthawk_something in ELI5: How does a DNR work? by HalloweenLover
It is a great idea to spell this out and good advice.
I don’t like at all this idea of “being a burden” on the family as a criterion for withdrawal of life supporting care. I’m an ICU doctor and almost always the family wants the patient kept alive more than the patient does, as the family loves them and doesn’t want to let them go. But the patient is the one who has to suffer the reality of their quality of life. And many will be in nursing facilities so not a “burden” on the decision maker. In addition it is unlikely the decision-maker would use being a burden as their explicit reasoning.
Focus instead on what an acceptable quality of life means to you. Knowing that they are following your wishes is usually what gives people the strength and love to let go.
DestrucoMode t1_jeg1jzi wrote
Reply to comment by BGFalcon85 in ELI5: If the chemical dopamine stimulates a 'feel good' sensation, is there a chemical that makes us angry? by Kree_Horse
I never knew that you could actually get addicted to anger and aggression
dman2316 t1_jeg1gcs wrote
Reply to comment by Throwaway08080909070 in ELI5: If benzodiazepines are CNS depressants, why is it so hard to die from a overdose of them alone? by psychrolute
Can attest to that one unfortunately. I'm on very high doses of hydromorphone (which for those who don't know is much stronger than regular morphine, 1mg of hydromorphone is equivalent to 10mg of regular morphine, and a small dose for me is 8mg of hydromorphone but have had to take up to 18mg before at doctors instruction) due to a combination of the seriousness of the pain and also the fact that my body for some reason is insanely good at processing medications, not just opioids but all types of meds, i always need far higher than the normal dose no matter what the medication is. So i was in the hospital when the dumbass doctor decided to give me benzos at a dose that was 4 times higher than they normally give to help me sleep cause i hadn't slept in almost 4 days, and i was far too tired to catch the problem until it was already too late. Scariest shit i've ever experienced.
CautiousCold8392 t1_jeg1e81 wrote
Reply to ELI5-What is the fibonacci sequence? by amsdys
In the Fibonacci sequence, each number is the sum of the two previous ones. It is helpful in computer science, for instance, for creating random numbers and sorting data. Natural examples include the spiral shapes of shells and galaxies.
GrumpyNC t1_jefzq32 wrote
Reply to ELI5: what is the GDP of a country by amradoofamash
To expand a little on what others have said:
It's a measure of the "official" economic activity in the country. As phiwong said, it doesn't do a very good job of representing illegal/black activity; in addition, it doesn't measure lots of human activity that has economic value but isn't transactional in a way that governments can track.
Childcare is a common example. The work of your kid's daycare counts towards GDP - it's one of the "services" in "goods and services." But when you pick your kid up and take them home, the childcare you perform is not counted. Childcare has measurable economic value, since people are willing to pay for it. But not all of that value is calculated as part of GDP. Only the part that involves one person paying another is. (And even then, it's only counted if the payment is reported to the government somehow - when you pay your friend's daughter to babysit, that probably isn't going into the GDP numbers either)
Is it important? By itself it can be kinda useful as a means to compare two countries. Having a higher GDP is generally desirable. It's also important to look at GDP per capita - the total GDP split among all the people in a country. This gives you a better sense of wealth. If you just look at GDP, Luxembourg ranks #72 - a couple of spots below Guatemala. This might lead you to believe that Guatemala is wealthier than Luxembourg. It isn't. Guatemala's GDP is higher, but there are a lot more Guatemalans than Luxembourgers, so that GDP gets spread a lot thinner. Luxembourg ranks #1 in GDP per capita and is considered extremely wealthy; Guatemala ranks #109 and is considered one of the poorer countries in the Western Hemisphere.
Sapphire580 t1_jefzmxr wrote
Reply to comment by Priceiswrongbitches in ELI5 The New Shape - The Hat by 13artzklauser
With the birds, if you slid it over even one row of the pattern it would be the same shape, with the hats you’ve got to go over 10 rows and down 2 to get the pattern to even be similar that means how far would you have to go straight over for the pattern to repeat on the same row, and that’s using one shape.
d0rf47 t1_jefzmsx wrote
Reply to comment by CrookedGrin78 in ELI5: If benzodiazepines are CNS depressants, why is it so hard to die from a overdose of them alone? by psychrolute
its likely that the effects of one are potentiating the effects of the other. The bigger issue is a persons response to the drug and how their body metabolizes it. I am not a physician just some with a keen interest in pharmacology. CNS is your central nervous system, this system control much more than just breathing, certain drugs may affect the heart more while others affect the breathing more. the issue becomes troubling when the cns is suppressed enough that one of sub systems (breathing or heart) becomes so low that it either stop functioning and arrest begins or in some cases it may be that they are both still "functioning" but not properly and hypoxia can set in. My understanding with GHB and alcohol is that its the heart rate dropping which causes the dangerous effect.
rkhbusa t1_jefzjd9 wrote
Relative to the earth you aren’t moving. The simplest way to explain it is using the car example, from inside a car cruising at highway speed you can drop a penny it will fall straight down to the floor of the vehicle as you perceive it relative to the car it didn’t move horizontally in space at all but when you look outside as you drop the penny it becomes evident that the penny has actually moved about 30 feet horizontally relative to the earth in the time from when it was released to when it hit the floor of the car. The earth is our car maintaining a constant velocity as it travels over its highway that is space, looking outside the windows of our car we can extrapolate that relative to the solar system and our universe we are moving very quickly but because we are all moving as one with our planet and there is no noticeable acceleration or deceleration, from our perspective relative to the earth we’re stationary.
ADDeviant-again t1_jefz9k8 wrote
Reply to comment by RockstarAgent in ELI5: If the chemical dopamine stimulates a 'feel good' sensation, is there a chemical that makes us angry? by Kree_Horse
Partially, for sure. Psychology is pretty complex, but definitely a component.
Personal_Might2405 t1_jefyx74 wrote
Reply to comment by NoPlaceForTheDead in ELI5: How does a DNR work? by HalloweenLover
Dad: I’ve made you 3rd in line to have power of attorney, and set the age to 35 before you’ll be eligible to take on the responsibility.
CautiousCold8392 t1_jefytiz wrote
Reply to Eli5 if the universe is expanding, then why isn’t the earth, and everything in it (us) getting measurably bigger too? by Far-Contribution-632
There is a very strong force holding the Earth, the sun, and the moon together known as gravity, which prevents them from separating on their own. The universe's expansion is unnoticed from our own galaxy. It's really on much larger scales, between galaxies, where the universe's expansion is noticeable.
greatdrams23 t1_jefyntg wrote
Reply to comment by jeremy-o in ELI5: "Grain Fed" vs "Grass Fed". Grain is the fruit of grass. by JessicaLain
Or eating chicken Vs eating eggs
freddwnz t1_jefymca wrote
Reply to comment by Alternative_Bar_6441 in ELI5 Why when we jump in the air the earth doesnt move by Alternative_Bar_6441
Because we are moving at the same speed as the earth rotates. You don't just magically stop moving once you lift off from the floor, you are still spinning with the earth at the same speed, just like the air in the atmosphere.
Metal-Dog t1_jefy4bs wrote
Reply to ELI5-What is the fibonacci sequence? by amsdys
Fibonacci was a mathematician who published a book. The entire purpose of the book was to show how much easier it is to do mathematics using Arabic numerals, as opposed to Roman numerals. One example he gave was a simple list of numbers: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89... et cetera. The sequence is formed by adding the two most recent numbers to get the next number.
GetARoundToIt t1_jefxzac wrote
Let’s take an everyday example.
We are riding in a car, speeding down the highway at 70mph. If we toss something (a ball?) softly up in the air, does it land right back in our hand? Or does it go spat against the back windshield, because when it lost contact with our hand it is supposed to fly backward at 70mph relative to the car?
So how does it work?
When the car is driving. Everything in the car, you, me, the ball, the air inside the car, are all going forward at the same speed. When we toss the ball upwards, we give it an upward force , but we didn’t change its forward speed. So the ball still kept going in the forward direction at the same speed as before, which is at the same speed as your hand. That’s why it can fall right back into your hand, as if the car was still.
wolfcede t1_jefxp64 wrote
Reply to comment by SirReal_Realities in ELI5: If the chemical dopamine stimulates a 'feel good' sensation, is there a chemical that makes us angry? by Kree_Horse
I heard rabies described as an experience of being thirsty for water without the ability to be satiated. So no matter how hydrated the rabies infected mammal is, they see you as standing in the way of them and the last mud puddle in the Sahara. That’s why they have an irrational instinct instinct to tear through you or anything else in its way. Similar to how you would tear off the branches of a fallen tree to get to your goal. Just instinctively acting to get an obstacle out of your way.
Peter20164m t1_jefxhfj wrote
Reply to comment by SwivelingToast in eli5: Why do seemingly all battery powered electronics need at least 2 batteries? by OneGuyJeff
If I only had an award to give!
[deleted] t1_jefxajh wrote
QuantomField t1_jefx9fc wrote
The Earth does move when you jump, but you are traveling the same speed as the Earth's rotation all the time. It only looks like you're not moving from the perspective of standing on the earth.
If someone in space could watch you jump they would see you move with the Earth before, during, and after the jump.
Not only is the Earth spinning, but it is orbiting the Sun. The Solar system is traveling through space around the galaxy, and our galaxy is moving through space. We are always in motion.
Something else to consider is that we don't sense movement. We sense changes in movement. That's why sitting in a car and sitting on the couch feels the same.
Lastly motion and speed can only be calculated in relation to something else. As an example if you're in a car travel at 50 mph, that means you are traveling at 50mph in relation to your starting position. You are still traveling at roughly 500k mph through space in relation to the Milky way galaxy. You just don't feel it because it's a constant speed.
RLDSXD t1_jefx36r wrote
Reply to comment by Prinzka in ELI5: If benzodiazepines are CNS depressants, why is it so hard to die from a overdose of them alone? by psychrolute
Anyone not familiar with them would be absolutely shocked how cheap and available RC benzos are. I love them and even I think it’s pretty scary.
RhinoG91 t1_jeg1t3m wrote
Reply to ELI5: Is there a time difference everywhere? by squidwards_noze
When you are on the phone with someone, are you talking to them at the same time or at different times? 5 minutes is always 5 minutes no matter where you are. Time zones are set by humans to match daylight hours with time in the day- more or less so noon is when the sun is directly overhead. We have to maintain consistently so we can’t say it’s 12 here and next door it’s 12:01, no one would know what time it is. We group them into zones into where it makes the most sense. It literally is an imaginary line where you have to set the clock forward, so you can match everyone else in the area.