Recent comments in /f/explainlikeimfive
Senrabekim t1_jef0kqg wrote
Reply to comment by Any_Branch_4379 in ELI5: why can’t someone who is light in weight punch as hard as someone who is heavier? by Any_Branch_4379
I'm not entirely sure what you mean by 'whipping' a punch. So I'll just go with what I know. There are 5 basic punches and the rest are just variations on them. Jab, Cross, Hook, uppercut, and overhand. Each of these punches is not just a different arm movement, but a different series of body movements. If we compare a jab and a weak side hook for example.
Jab: starts in the toes, and rear thigh, tensing those to give a rock solid base. Let the flex radiate upward to your core as you exhale sharply involving your abs and diaphram. Rotate your wrist as quickly as you can to unfold your arm straight out. You want your fist to impact at the exact moment that you fully clench your fist, the exhale completes and you flex your rear knee. Keep your center of balance directly under your shoulders the entire time, do not shift into putting more than 30% of your weight on your front leg. Your aim point should be about three inches behind the contact point. As soon as you make contact counter rotate your wrist to bring your arm back to your guard. This punch should be as fast and crisp as possible. You typically aren't looking for a knockout with a jab, you just want to take a small opening and wedge it open for a bigger punch.
Hook: From your back leg shift your weight from sode to side to your front leg. Load your front leg and prepare to drive back to the side that your weight just came from. This punch is all ass and obliques. Exhale sharply as you tilt your elbow to aim. Come across with your fist as hard and sharply as you can. Fully clench your fist and finish your exhale as you make contact. You want to drive this punch through something, I like to aim for putting the punch into the inside opposite wall of my opponents skull if I aim for the head and I want to drive it to the spine if I aim for the body. At the point of impact your entire body should be a wall of flexed muscle. Recover by twisting your elbow back into place for your guard.
In either punch you want to make an imaginary box, the top is your eyes, the bottom is your floating ribs, and the sides are the tips of your clavicle. This box extends out from your chest. Your hands do not leave this box. They are stuck in the box. We aren't getting fancy here, your hands stay in the box. And breathe dammit.
Throwaway08080909070 t1_jef0df3 wrote
Reply to ELI5: If benzodiazepines are CNS depressants, why is it so hard to die from a overdose of them alone? by psychrolute
Not all CNS depressants are born equal.
Something like morphine (or any μ-agonist), which strongly depresses the breathing reflex, has a much more narrow therapeutic index than for example, alcohol. Benzodiazepines don't depress respiratory function on their own, but when mixed with alcohol or opiates they have a synergistic effect that can be lethal.
Edit: More than one reply pointed out that this was less than layperson accessible, I hope the following helps somewhat.
μ-agonist: A type of receptor found in the brain and the GI tract among other places. Agonist just means something that binds to those receptors and makes them work. Opioids are a well known example of these substances.
Therapeutic Index: How much of a drug it takes to have the desired effect, compared to how much of the drug causes toxicity. Some medications have a very broad therapeutic index, many antibiotic types are the classic example of this.
Depressed Respiratory Function: In this case it's all about the signals your brain sends to keep you breathing. Opioids are famous for depressing that part of your brain, sometimes with lethal consequences. Benzodiazepines are not really known for this, although technically they do have some effect.
Redarrow762 t1_jef089h wrote
Reply to comment by MurkDiesel in ELI5: If the chemical dopamine stimulates a 'feel good' sensation, is there a chemical that makes us angry? by Kree_Horse
And police officers.
Chromotron t1_jeezofz wrote
Reply to comment by chimpaflimp in ELI5: If the chemical dopamine stimulates a 'feel good' sensation, is there a chemical that makes us angry? by Kree_Horse
They are not even pedantic, they are just wrong. Even pedantry would be about objectively true statements instead of pushing the opinion that "viruses are nothing more than chemicals" like that means anything.
Chromotron t1_jeezh5y wrote
Reply to comment by iCameToLearnSomeCode in ELI5: If the chemical dopamine stimulates a 'feel good' sensation, is there a chemical that makes us angry? by Kree_Horse
> Viruses do not reproduce.
That's nonsense. They do, by hijacking cells. Do humans not reproduce because they need external air, water and nutrients? Heck, do men even reproduce if they just "hijack" women to grow the little things?
SurprisedPotato t1_jeez2ao wrote
Reply to ELI5: Doesn’t the drop in a stock price after the ex-dividend day cancel out the dividend gain for an investor? by 4westofthemoon4
You've noticed that the share price drops by the dividend amount on the ex dividend date. Naturally, because a share that's going to guarantee you $5 if you own it tomorrow is less valuable than one where you have to wait for a year to get the $5.
What you don't see is the gentle pressure pushing the share price up as the year goes by, and next year's dividend date gets closer and closer. A share that guarantees you $5 in a six month's time is worth more than a share that guarantees you $5 in a year's time. When the ex dividend date is only 3 months away it's worth even more.
You won't notice that and can't notice that effect for ordinary shares, because there are so many other factors that affect the share price much more strongly. But you will see this exact effect if you look at the price of exchange-traded fixed income instruments: these are tradable on the exchange but give you literally a fixed amount of cash regularly. The price drops on the ex date, then slowly climbs until the next ex date. You earn the same amount per day no matter how many ex dates you cross.
Chromotron t1_jeez1w3 wrote
Reply to comment by iCameToLearnSomeCode in ELI5: If the chemical dopamine stimulates a 'feel good' sensation, is there a chemical that makes us angry? by Kree_Horse
They never said that viruses are alive, so I have no idea why you even mention it. And it doesn't matter anyway, unless you can show me an objective universal definition of that word which at least a majority of relevant researchers can agree on.
Being alive and having a "reason" is not the same. A complex but definitely not alive machine like a car has a purpose and does it's functions for a reason. Ultimately, all things do what they do for a "reason", be it just the laws of physics.
If instead you meant "reason" in its second meaning, based on consciousness, then it fails just as well. Bacteria are considered alive by almost everyone, yet they have no mind to speak of. They don't reason with themselves at all, they just do like a bio-machine.
If you think that it matters if viruses or prions are "alive", then you are wrong. It simply does not matter, what counts is what they do (with or without "reason"), and that is exactly what the post your responded to described. No researcher would suddenly change their approach for treating or preventing rabies or covid if you or anyone else decides they are (not) alive.
whomp1970 t1_jeeypru wrote
Reply to comment by 13artzklauser in ELI5 The New Shape - The Hat by 13artzklauser
#ELI5
I'd say that's ... three white birds high, and three white birds wide. You agree? There's like, nine complete white birds you can see. Right?
Now I tell you, that's a snapshot of a much bigger mural, painted on the side of a building.
Can you find out where that 3x3 birds section IS on that huge mural?
You probably can't, because no matter which section you focus in on in the mural, all you see are 3x3 birds.
Make sense so far?
The patterns made by the hats ... they don't repeat like that.
Take a look at JUST the darkest blue ones.. They don't really repeat like the white birds do.
And the math people who figured this out, realized that no matter how big the mural is, the dark blue hats in one section, do not resemble the same pattern of dark blue hats in any other section.
That should blow your mind.
nighthawk_something t1_jeeyo75 wrote
Reply to comment by TheCuriousSages in ELI5: why can’t someone who is light in weight punch as hard as someone who is heavier? by Any_Branch_4379
Yeah at low levels, size is likely compensated by with proper training and technique. But at the high levels where everyone is highly skilled and trained, biological differences play a more important role.
AccomplishedShoelace t1_jeeyl2k wrote
Reply to comment by sirfuzzitoes in ELI5: Why does every mail subscription seem to have an unsubscribe button? I have seen this even for the scammiest subscriptions. by OldDew
A worldwide law?
FYI there are lots of places in the world that do not have this specific law. Or it doesn't get enforced.
They all have national companies that still use the unsubscribe function. There is a Mimecast guide on keeping your e-mail reputation with ISPs up so you don't get spamlisted. Basically conforming to RFC 2822 SMTP, which includes unsubscribing functionality.
[deleted] t1_jeeyb9c wrote
Brainfuck t1_jeey6wj wrote
Reply to ELI5: Why sugar in fruits is good for you but processed sugar in chocolate and desserts is not? by Sensitive_Apple_7901
One word, fiber. Fruits have fiber which prevents excessive sugars from getting absorbed in our body.
Refined sugar is devoid of fiber and gives you the entire dose spiking blood glucose levels.
BTW fruits means fruits. Not fruit juices. Fruits juices fall in same category as refined sugar as it doesn't have fiber.
More-Grocery-1858 t1_jeexy5n wrote
Reply to comment by whatisthishere in ELI5: If the chemical dopamine stimulates a 'feel good' sensation, is there a chemical that makes us angry? by Kree_Horse
The ego is an effective substitute for talent in the minds of the deluded.
[deleted] t1_jeexvwa 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
[removed]
explainlikeimfive-ModTeam t1_jeexpdy wrote
Reply to ELI5 - In moviemaking, it seems "dailies" would be pretty easy to create for review and playback in the digital realm, but how were "dailies" created in the film era, if the film had to be processed/developed and then sync'd to sound first? by OsgoodSchlotter
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. This includes topics of a narrow nature that don’t qualify as being sufficiently complex per rule 2.
If you would like this removal reviewed, please read the detailed rules first. If you believe this {kind} was removed erroneously, please use this form and we will review your submission.
whatisthishere t1_jeexdle wrote
Reply to comment by MurkDiesel in ELI5: If the chemical dopamine stimulates a 'feel good' sensation, is there a chemical that makes us angry? by Kree_Horse
What I’ve noticed playing football in my teen years is the kids that say they should be the quarterback, usually aren’t the best pick for that position, but they want it. Then they aren’t very bright either but they want to be a doctor or stock fund manager. They have a personality where they want the most glamorous positions.
[deleted] t1_jeex92y wrote
Reply to comment by [deleted] in ELI5: why can’t someone who is light in weight punch as hard as someone who is heavier? by Any_Branch_4379
*Impulse is I, but I =deltaP
lotsofsyrup t1_jeex8u0 wrote
Reply to ELI5: Why sugar in fruits is good for you but processed sugar in chocolate and desserts is not? by Sensitive_Apple_7901
false premise. sugar in fruit is not good for you. fruit is nature tricking you into eating fiber and vitamins by luring you with sugar.
[deleted] t1_jeex85p wrote
Reply to comment by raerlynn in ELI5: why can’t someone who is light in weight punch as hard as someone who is heavier? by Any_Branch_4379
F = ma not mv.
F = dP/dt = m*dv/dt = ma. I think you mixed up dP/dt and P. Impulse is P.
GESNodoon t1_jeewqaq wrote
Reply to comment by Any_Branch_4379 in ELI5: why can’t someone who is light in weight punch as hard as someone who is heavier? by Any_Branch_4379
Your shoulder, hips and legs all play a big part in a well performed punch. Watch a professional fighter or martial artist.
PixieBaronicsi t1_jeew1sx wrote
Reply to ELI5: Doesn’t the drop in a stock price after the ex-dividend day cancel out the dividend gain for an investor? by 4westofthemoon4
If a company is making a steady profit, but otherwise everything is remaining the same then one of two things should happen:
- The company keeps its profits in the company, meaning that the company gets more valuable over time since as well as the profitable business it now has cash in the bank
- The share price increases slightly each year and then falls when it pays the dividend, repeating a constant cycle each year
The shareholders see the same return either way, either in cash or an increased stock price
thisisdumb08 t1_jeevvc5 wrote
Reply to comment by richiehustle in ELI5: Why computer chips nanometers progress is gradual? Why can not the technology bump up to the lowest nm possible immediately since the concept and mechanisms of it is already known and studied by richiehustle
They are, they started 10-15 years ago based on the results of work 20 years ago. You get the chip today. 9-14 years ago they got the results from the manufacturing 19 years ago and couldn't incorporate the changes into the the plans already in motion the previous year, though sometimes they can and you get internode improvements either in yeild or performance.
igg73 t1_jeevglg wrote
Reply to eli5: Why do seemingly all battery powered electronics need at least 2 batteries? by OneGuyJeff
I have a logitech wireless mouse my friend got me for my 19th birthday. 14 years later ive changed the battery 5 times
Bonzi777 t1_jeevd91 wrote
South Park has never really been my cup of tea, but I think the big reason is, it’s funny and it’s clearly satirical. They’ve also built up a lot of goodwill with different factions because they’ve ‘offended’ everyone over the years, so in a weird way it’s seen as operating in good faith.
I also think it’s worth noting that most comedians or comedy acts that have gotten ‘cancelled’ have happened when they’ve veered too far away from “funny jokes” and towards “mean spirited attacks”.
newworld64 t1_jef0p2m wrote
Reply to ELI5: Why sugar in fruits is good for you but processed sugar in chocolate and desserts is not? by Sensitive_Apple_7901
If it's high fructose syrup that is used, some people are even allergic to excess free glucose (myself included)
https://pubmed.ncbi.nlm.nih.gov/29587887/