Alpha decay by Ciro Santilli 35 Updated +Created
Most of the helium in the Earth's atmosphere comes from alpha decay, since helium is lighter than air and naturally escapes out out of the atmosphere.
Wiki mentions that alpha decay is well modelled as a quantum tunnelling event, see also Geiger-Nuttall law.
As a result of that law, alpha particles have relatively little energy variation around 5 MeV or a speed of about 5% of the speed of light for any element, because the energy is inversely exponentially proportional to half-life. This is because:
  • if the energy is much larger, decay is very fast and we don't have time to study the isotope
  • if the energy is much smaller, decay is very rare and we don't have enough events to observe at all
Ciro Santilli's hardware / Google Pixel 3a (2020) by Ciro Santilli 35 Updated +Created
Bought: January 2020 from store.google.com/ for 350 pounds.
Front camera video on Android 11: about 100MiB / minute. The encoding is however super inefficient, a FFmpeg re-encode without any options reduces it by 1/3.
For Fastboot mode: Power and Volume down simultaneously for 10-15s. It is OK if screen sleeps. On "no command", power then volume up to see options.
2023-10: touchscreen not registering touches anymore. Still displays images. Manage to regain access with wired USB mouse + a simple USB-C adapter. RIP. Will attempt replacement: store.ifixit.co.uk/products/google-pixel-3a-screen-genuine?variant=42388954448071, partly to get Authy access which I had never properly tested... Replaced screen, but at exact same status as before: shows image but no touch. thus I wasted my money and time (minus the learning) something else is broken.
The Sixteen Men Of Tain by Ciro Santilli 35 Updated +Created
The Social Network by Ciro Santilli 35 Updated +Created
Prokaryotic large ribosome subunit by Ciro Santilli 35 Updated +Created
The Water Margin (1998 TV series) by Ciro Santilli 35 Updated +Created
This will likely be the best TV adaptation of Water Margin for all eternity, until AGI deepfakes a better one.
The only downside is the usage of slightly supernatural martial arts.
It must be said that the series gets worse as it progresses. The best part of it is the backstory of individual characters, and how noble men are made fight their government. As things progress however, it becomes more of a mass battles thing, so less interesting. This is perhaps a problem of the novel itself, which an adaption cannot avoid. The good part basically ends with the end of Wu Song's story at episode 22.
One of the most amazing things about this series is learning about how people lived in the past. It feels very realistic. Some amazing details:
  • on the pharmacy, they used a leg powered grinder. Ciro Santilli's wife said she had actually seen one those in use in China
  • to indicate that something is for sale, the would attach some straws around it
  • it is totally fine to talk to an old person about giving them money to buy a nice coffin
  • some dudes drink baijiu from bowls. One wonders how much truth there can be in that.
Video 1. . Source.
Features the amazing theme song "Hero song" (好漢歌) by Liu Huan (劉歡). Makes Ciro Santilli want to cry. Lyrics on mojim: mojim.com/cny105509x7x2.htm. The opening sentence is particularly remarkable:
大河向东流哇
天上的星星参北斗哇
说走咱就走你有握有全都有
路见不平一声吼哇
该出手时就出手哇
风风火火闯九州哇
translation:
The big river flows to the West
The stars in the sky gather with the Big Dipper
If you say we go, then we go. You have a grip (?), you have everything
If on the road we see an injustice and someone shouting
When it is time to deal with it, we'll deal with it
We'll energetically rush through the Nine Provinces
The Big Dipper is reference is made in the novel itself as part of a dream one of the leaders of the rebellion has. The dream is a premonition of the number of men that will gather to plot to steal expensive birthday gifts corrupt officials are sending one another.
The song perfectly captures the camaraderie shown in the novel, the immediacy with which sworn brothers follow one another into the riskiest of tasks, and the fight against injustice, which is the central theme.
To get an idea of its popularity, Ciro Santilli's mother-in-law is able to complete sentences of the song by herself in her late 60's, and she isn't exactly a scholar! This was from before she stopped "having fun" (see also "No time for fun" from from the Orange Papers) and started watching nothing but Falun Gong media.
Video 2. . Source. Chinese: 王进打高俅. One of the leitmotifs, played to great effect on the suona throughout the series in moments where the good guys have a victory, e.g.: youtu.be/lnshzmF6sY4?list=PLJxTQiKLmBibFit3q-SbRBjxiKtOJz5na&t=417. Amazing, so moving.
Video 3.
Ruan Xiao's Seven Fish song 阮小七渔歌)
Source. Used when they show Liangshan at one point, this song is particularly cool. www.bilibili.com/video/BV1Xg4y1b7qj/ shows the scene where a closely related song is sang. Lyrics at baike.baidu.com/item/阮小七渔歌/20358999 with all noises removed:
英雄哪不会读诗书哇
只在那梁山泊里住哇
虽然生得泼皮身哪 杀贼原来不杀人
quick translation by Ciro Santilli:
The heroes cannot read poetry
They only live at Mount Liang marsh
Although he was born sloppy (lit. with a course leather body)
They only kill bandits, they don't kill people
  • Gao Qiu
    • 1 the rise of Gao Qiu:
      • Gao Qiu and his gang bully a street performer. Wang Jin, a military officer responsible for training the troops, beats the fuck out of the gang upon seeing the scene.
      • Gao is politely fired from the pharmacy and given a recommendation letter for a new position somewhere else. He is bounced again, and finally accepted as assistant to a wealthy household. The actor and the way Gao Qiu is portrayed is very subtle. Makes you almost like him or feel sorry for him. Good job.
      • while delivering two small jade statues to a wealthy friend of his current master, he stumbles upon the friend playing cuju with some attendants, and shows off his incredible abilities. The friend soon asks his current master to give him over, and the old master complies.
      • the new master much appreciates Gao Qiu because of his playing. Gao Qiu's old gang of misfits comes looking for him, and he invites them to restaurant the next day. But at the restaurant, he menaces his old friends who adore him, saying that they must never try to find him again. Gao then orders his men to beat the old friends with sticks. He asks the men to not beat the old friend who adored him the most so as to look as if he were an accomplice with Gao, and the other old friends then beat him up as well themselves.
      • Gao's new master becomes the emperor for some reason. The new master, now emperor, then also promotes Gao, of whom he is very fond of, to a very high military rank for which he has no qualifications. Want Jin learns of this as Gao will now be his boss, and foreseeing trouble asks for fake sick leave on the first day that Gao will be there.
      • Upon learning about the sick leave, Gao remembers Wang Jin, and calls him in regardless, and orders his men to beat him severely with sticks as a punishment for faking to be sick. An advisor pleads him to stop as that would look bad in his first day in charge.
      • while Wang Jin's mother nurses him to recovery, they decide that it is best if they escape to another city to avoid Gao's persecution. Wang Jin the flees carrying his mother on a wheeled cart. Upon learning of this, Gao orders Wang to be arrested for leaving his post. The shirtless scene in which Wang is treated by his mother shows how physically prepared the actor was, well done. Might be on steroids.
  • Lu Zhishen
    • 2 Beating up the Lord of the West.
      A Shi Jin comes to a new city, Weizhou (TODO modern location) looking for Wang Jin, and instead finds another officer called Lu Zhishen.
      Lu was doing a feat of super Strength by saving some damsel in distress from a cart with out of control horses by simply holding the cart up, which impresses Shi Jin.
      Shi Jin then tells Zhishen how he met Wang Jin by chance who coached him in the martial arts, and some more backstory that is impossible to follow. Shi Jin's story is told properly in chapter 2 and 3 of the novel according to Wikipedia, before Lu's own story is told on chapters 3-7, but this adaptation skips it.
      While they are talking, there is some lady crying nearby, and Zhishen ends up helping her out. She had been deceived by the butcher Zheng, and now ows him money and cannot leave town.
      Butcher Zheng is a ruthless fellow, one amazing scene shows him throwing a knife at a dog that was stealing some of his meat, and telling his men to skin the dog so they can eat it, saying:
      You eat from me for free, so I eat from you for free!
      in Chinese:
      你白吃我,我白吃你!
      Next morning, Shi Jin leaves whil Zhishen is sleeping his drunkenness off, and when Zhishen wakes up he goes to escort the damsel out of town. When he arrives, Lu's hotel keeper underling is causing trouble, and he slaps him hard and forces him to massage his legs while the lady can escape.
      After that, he pays butcher Zheng a visit. First he pisses Zheng off by making an order of 5 kg of lean minced meat. Minced meat was produced by cutting it up with two meat cleavers, a rather tiring job Ciro's mother in law sometimes did that when there was no pork mince but there was a piece of pork laying around, can you believe it!
      Lu then asks Zheng to produce 5 kg of minced fatty, a weird request, but to which Zheng complies, causing him much effort.
      Lu then finally asks for 5 kg of minced bones! Zheng understands that Lu is not trying to buy from him, and a fight ensues, in which Lu soon kills Zheng with his bare fists, and then escapes to avoid justice.
      Lu ends up finding the damsel he had helped earlier in another town, and she's doing fine as the concubine of a wealthy man, who then helps him become a monk to avoid justice, but entering a monastery to which the man had donated money.
    • 3 Lu can't follow the monastery rules, notably not drinking alcohol and not eating meat, and gets kicked out, sent to find work in another monastery at the Capital
  • Lin Chong
    • 4 Lu arrives at the new monastery at the capital and is assigned to take care of the vegetable garden that was being pilfered, which he does well. In a remarkable scene, he shows his might to the thieves by uprooting a willow three. Later on, while demonstrating his fighting skills to his new acquired followers, Lin Chong is passing by and takes notice. The two fight a few rounds to measure each others strengths and are impressed by one another.
    • 5 The magistrate, possibly after some bribing, does not dare accuse Lin of attempting murder, which would mean the death sentence. So he reduces it to 20 beatings with a stick and banishment to TODO Chang something. They then plan to kill him on the way and make it look like an accident.
    • 6 On the way to prison which is in another town, while crossing a forest, the two underlings attempt to murder Lin Chong, but Lu Zhishen appears and saves him.
      He intimidates the men by breaking a tree with his staff, Lu really has something against trees it seems. Lin Chong decides to still go to prison so as to not become a fugitive, and arrives safely in prison.
    • 7 Men from the capital are sent to the prison to kill Lin Chong. They transfer him to a barn, and try to set the barn on fire, but Lin Chong happens to be staying at a small nearby temple in which he made an offer to the Gods of the mountain. The killers then come by to take cover, and Lin Chong murders them with his spear, thus sealing his fate as a fugitive forever. The killing is represented in this painting: en.wikipedia.org/wiki/File:Yoshitoshi-Lin_Chong.jpg
    • 8 Lu's followers lure Gao Qiu's adopted son into a trap, and cut off his genitals. Lin Chong goes to Mount Liang marsh. He head of the bandit group there does not want to take him in afraid that he will steal his leadership post, but his second in commands badly want Lin Chong to stay, recognizing his worth. The leader asks him to kill someone to prove his commitment, but Lin refuses to kill innocent people. Still, ends up staying having nowhere else to go. At the end, the Yang Zhi, the Blue Faced Demon, passes by the Mount Liang marsh. Je has just lost a stone shipment for the Emperor's stone garden due to a storm while he was on boat. The garden is a useless pursuit directly supervised by Gao Qiu.
  • Chao Gai and the original 7:
    • 9 The Blue faced demon returns to the capital. He tries to bribe bribe Gao Qiu for forgiveness for losing the stones, but it fails and he is thrown into jail. He is then forced to use all his money to bribe his way out of jail, and after leaving has to sell his precious family inherited sword to eat. A local bully who often eats merchants food without paying, because he has connection to corrupt officials, asks to see the sword. Although the does not appear serious about buying, the Blue faced demon displays it to him and the crowd. The incredible sword can:
      • cut copper without denting. He demonstrates this on some copper coins
      • cut a hair placed on it by simply blowing the hairs
      • cut through a man without being stained by blood
      In order to demonstrate the cutting of a man, the demon asks for someone to bring a dog, but the bully keeps insisting that a man must be used. When he starts to get physical, the demon kills the bully by semi-accident with the sword. After being cut and just before dying, the bully recognizes that the sword is truly a magnificent weapon.
      The demon turns himself in for the killing, but because it was a semi accident with many witnesses to support him, all of which hated the bully, he is exiled to another city rather than put to death. Upon arriving in the new city, the governor of the new city seems happy to have him as a great warrior and releases him and gives him a good reception, having him demonstrate his weapon skills to court.
    • 10 The Blue faced demon is tasked by his new master with delivering some expensive birthday gifts from the new city to the capital, a dangerous task. He proposes transporting the gifts as ordinary goods in cheap looking packages to divert the attention of thieves.
      The scene then cuts to the Red Haired Devil and other men plan to steal the gifts, which is morally justified because they are being sent from one corrupt official to another. The leader of the group of thieves dreams about the Big Dipper and the number of stars coincides with the number of accomplices that ends up forming somewhat by chance. The band makes a formal oath to their goal and intentions, in which they burning papers (presumably with written promises) and drink baijiu ritually. The seven are:
    • 11 The gifts are stolen after the party carrying them is tricked into drinking poisoned baijiu which makes them sleepy.
  • Song Jiang becomes a murderer
    • 12 The investigation to find the gifts discovers who the culprits are, but they manage to escape to Mount Liang marsh after Song Jiang tips them off that the authorities are coming.
    • 13 The thieves reach Mount Liang marsh to seek refuge. The boss is hesitant about taking them in, because their crime is so serious that it would lead to increased attention from the emperor, and also because he's afraid they would take up his place. Lin Chong on the other hand is happy they came, since he's in a similar situation to them. He also tries to separate the men, but they simply refuse to be put apart, as they are sworn brothers. It is quite homoerotic. He eventually gets so mad he murders the chief, and declares Chao Gai as chief.
    • 14 Song Jiang marries some cute unfortunate chick who sings and plays the pipa really well just to help her out. But unlike his clerk, he doesn't want to fuck her, he's likely thinking about his brothers all sweaty in the marsh. One day he even invites the clerk to stay with his wife because he's not interested. Unwise. The clerk then sings to her, as he also sings and plays pipa very well. The red haired devil drops buy and wants to give 100 taels of gold to both Song Jiang and to the captain that let Chao Gai escape. Song Jiang refuses, taking only 1 bar as a token. The captain accepts. Song Jiang's wife then willingly confesses that she is having an affair, and Song Jiang doesn't care, he gladly signs a divorce agreement, and gives her the house. She later finds the letter from Chai Gai which would implicate Song Jiang with the bandits. She tries to bribe Song Jiang into fucking her, only then will she give the letter back, but Song Jiang is not happy with that, and instead pulls out a knife, and in the struggle kills her by semi accident. People in this novel should really learn not struggle around with open blades!!
  • Wu Song
    • 15 Song Jiang escapes to his father's home, and his father hides him. The authorities were supposed to arrest his father and torture him in-lieu of the missing son, but the father has an official document in which he had previously cut ties with his son. Song then goes to Lord Chai. At Lord Chai's he meets martial artist Wu Song, who is about to leave Chai to go home.
    The scene then follows Wu Song. He goes into a bar and drinks superhuman amounts of baijiu: 18 bowls, and in a place that prides itself for having a specially strong baijiu, the bar is called "3 bowls and you can't cross the bridge". When leaving, the bar keeper tells hims that here is a tiger on the loose, but he's not scared. While he sleeps, the tiger comes, and after some struggle he manages to kill the tiger by beating it to death with his bare hands!
    The scene then cuts to a dwarf Wu Dalang that sells some king of bun, and who has a beautiful wife. They call the buns 炊饼. Here they ask if those are mantou or not: www.zhihu.com/question/20248788. They show their deep love for each other, despite being poor. Rape incoming.
    • 16 Wu Song arrives in the city that was offering a bounty for the tiger and is received as a hero. He was about to go off searching for his brother in another town, but surprise, Wu Dalang is his brother. So he takes a job from the local magistrate who appreciated him having killed the tiger, and starts to live with his brother. The beautiful wife then starts to become sexually interested in him, the scenes that show that are very good. At the end of the episode, she proposes openly to Wu Song, in a cliffhanger ending.
    • 17 Wu Song refuses her and moves out and does not tell his brother what happened Wu Song then is sent for a few months in a task At the same time another rich dude Master Ximen from the city has become interested and asks the older innkeeper lady who lives nearby how to fuck the wife This is where she drops the porn quote from Wikipedia
    • 18 The wife starts fucking the rich dude regularly. They hide it from Wu Dalang but gossip is already out on the street and the pear seller friend warns Dalang who doesn't believe it One day he comes home early to check but he misses them and the wife lies and pretends to be offended With the help of the pear seller Dalang finally catches them however but the rich dude just kicks the dwarf and walks away This cause serious internal injuries to the dwarf and the wife appears ashamed and goes buy medicine But unfortunately the rich dude owns the medicine shops in town and they proceed to continue fucking in the medicine shop The dwarf says that hell annul the marriage so they can do it legally but he is still very sick and if he dies before his brother comes back Wu Song is going to kill everybody. They then decide to poison the dwarf instead and the proceed killing him. The rich dude bribes the coroner and some men beat up the pear seller to keep him shut.
    • 19 Wu Song returns home and finds his brother died. The big character on the grave is 祭 (dian4) from 祭奠 (make an offering to the dead). Everyone is avoiding him. The pear seller and his father moved away to another place. But he stumbles upon the boy who tells the truth. The coroner then confirms, and says he was forced to make a false statement, but already has a letter ready with the truth, including samples as proof. Wusong takes the proof and witnesses to the local magistrate, who basically dismisses the case. Guards are posted at Dalangs home to protect the wife from Wu Song, but also to prevent the wife from confessing.
      Wu Song starts inviting the neighbours to come over to eat one day. They try to avoid him, but he insists. They come. He asks for them to say who the killer is. The old lady tries to deny it, but the wife is so guilty she cant even speak. Wu Song cuts her throat in front of the little offering place for his brother. Wu Song sends the head of the to the rich dude, and then proceeds to murder him. He does put up a fight though. everybody Was Kung-Fu Fighting. Wu Song then burns his brothers belongings to return it to them, and places both heads, of the wife and rich dude, on the altar. He then hands himself in to the authorities, and is sentenced to a beating plus exile, the usual.
    • 20 Wu Song is being transported to prison. They just take the cangue off, as he is so strong he could escape anyways. They arrive at an inn run by Sun Erniang, an innkeeper lady that makes mantou out of human meat. Before they arrive, we see a scene of two random men refusing to stay at the tavern because they've heard humours of the human meat thing. But Wu Song's party don't know about it and decide to stay and drink regardless. She tries to drug them but Wu Song only pretends to drink and fall asleep. They then fight a bit and he wins. Her husband arrives, discovers that he is Wu Song, asks for excuse, and they become good friends, since they are all justified criminal. Wu Song asks her to spare the guards, who wake up next morning both having dreamt that they were on a chopping board. The arrive at the destination, and due to Wu Songs reputation, he is treated extremely well by the prison ward, given food and even a bath. The reason for this is that the warden needs him to beat up some business rival, and so Wu Song beats up the bully.
    • 21 A general comes and takes Wu Song from the constable pretending to like him. But in the end the general was in collusion with the bully, and frame Wu Song for theft. He is re-exiled somewhere else. On the way, they try to kill him, but Wu Song kills all the killers instead. He then goes to the general's home and murders everyone.
    • 22 Wu Song is helped escape by the human meat mantou lady who dresses him as a taoist monk as a disguise. Wu Song meeds Song Jiang on his way to Mount Erlong, which is where Lu Zhishen is staying. But Song Jiang is going to Qingfeng Fort, a new place never mentioned before.
    The story now follows Song Jiang. He reaches some other bandit dude Qingfeng Fort. After another evil woman, they take over Qingfeng Fort, it is quite trivial and boring. Song Jiang receives a letter saying that his father died, and he returns home ashamed for not having been there when he died, the other men go to Mount Liang marsh. Song Jiang gets home, but finds that his father is still alive, it was a trick just to bring him home. But his father is a bit sick to be honest.
  • Song Jiang joins the outlaws definitively
    • 23 Song Jiang's father asks him to serve sentence to not become an outlaw forever, he complies. There's also the fact that a new emperor took power, and so they usually grant a general amnesty. So here we go again, exile to some random place. The brothers from Mount Liang even take out the two guards he's with, but he insists on going through with it. When will they learn. In the end, the amnesty is declared, but he's not included.
    • 24 Song Jiang learns that he wasn't pardoned because they believe he is collusion with Mount Liang, and rebellion is an unpardonable crime. Song Jiang drinks a lot and writes a rebellious poem on the wall of an inn, and signs it. Someones sees it, and they arrest him for real, and ask the Capital how to punish them. The messenger however is in Song Jiang's side, and brings the letter to Mount Liang instead. They then fake a reply from the capital telling to bring Song Jiang over, and planning to free him in transit. Just after the messenger leaves, the rebels notice that they didn't fake the letter well enough, and that it will be found to be a fake.
    • 25 Due to circumstances the execution is expedited. But the rebels still manage to come in time and save Song Jiang and the messenger who was going to be killed with him while they are being taken to the execution ground. Song Jiang reveals his banner, 替天行道 ("Enforcing the Way in Heaven's Name")
The Sims by Ciro Santilli 35 Updated +Created
A young Ciro Santilli really liked this game, the way it makes you feel.
The Simpsons by Ciro Santilli 35 Updated +Created
Video 1.
The Fall of The Simpsons: How it Happened by Super Eyepatch Wolf (2017)
Source. This interesting video essay makes the main point that the Simpsons used to be good because they mocked mainstream. But then they became mainstream, which basically defeated their purpose. Think different from Apple comes to mind.

Pinned article: ourbigbook/introduction-to-the-ourbigbook-project

Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
We have two killer features:
  1. topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculus
    Articles of different users are sorted by upvote within each article page. This feature is a bit like:
    • a Wikipedia where each user can have their own version of each article
    • a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
    This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
    Figure 1.
    Screenshot of the "Derivative" topic page
    . View it live at: ourbigbook.com/go/topic/derivative
  2. local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:
    This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
    Figure 5. . You can also edit articles on the Web editor without installing anything locally.
    Video 3.
    Edit locally and publish demo
    . Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact