OpenLLM-France/wikimedia huggingface dataset:
# Scienceshow/Guides/Ferrofluid
## Purpose

This is a template for new guides and recipes. Make a brief statement about the purpose of this specific guide you're making. Remember that no copyrighted material can be added to this book without the authors explicit accept and please ackowledge sources of information and ideas with links to websites and references.
Status for this guide: Finished, Not yet finished, Check recipes...(leave the appropriate)

## Safety
### Safety Class

Choose a fitting safety class for this description
* Too dangerous! (We do not make this experiment because …)
* Very dangerous (Should only be attempted after careful training)
* Dangerous - Please be aware of this or the other thing... (Untrained people can do this experiment under supervision and guidance)
* Harmless (The most dangerous thing is this insignificant little petitesse)

### Required Safety Equipment

* The show performer: Glasses / Lab coat / Nothing / Fire extinguisher / Wet towel and a bucket of water / Eye flushing bottle
* Audience/participants: Safety screens / Hearing protection (a finger in the ear is often a help).

## Materials

You'll need the following - make a list
* item 1: formula, CAS number, supplier , Safety issues (describe the most important ones), Storage, link to safety datasheet

## Procedure

Preparation time, Performance time, Clean-up time.

### Step by step

* Start by…
* End with explaining how to properly get rid of waste products

### Alternative methods

Other ways to do the experiment

### Dangers

Now the reader knows the experiment, give a closer description of possible dangers.
* Important, be aware of…
* Consider the…

### Other Factors

What other things can sometimes affect the result of the experiment. Maybe the humidity or cleanliness of the glass ware is an issue.

### Show notes

What to consider when preparing. How to make it more spectacular. What can be difficult to achieve 'on stage' that normally is easy when practising.
What other experiments are good to that have in relation to this one?
What should you beware of that can make the experiment boring?

## Explanation
### What's taking place

Here you can give a more quantitative and mathematical description of what happens. What fundamental laws are involved or demonstrated by this experiment etc. Remember to explain jargon/expressions from the laboratory.

### In the real world

Do you meet things like this in daily life - give examples!

### Uanswered Questions

Things we do not yet know and should find an answer to - maybe how it actually works etc.

### More Information

* Websites with more info the end.

## Remember

This is just a guide and it can contain both errors and omissions. Always make experiments in small versions before proceeding to larger quantities where things could become dangerous. Ask around if you have any doubts before starting and do not start on a procedure you do not feel you understand and is qualified to perform.
This opensource material is from The Wiki Science Show Book in English. It is based on the template for new guides.
Direct link to this guide in English This guide in english.
# The Once and Future King/Minor Characters

The Once and Future King - Minor Characters
See also Major Characters.
As many characters have only a given name, or take "of Somewhere" as their last name, the characters are listed alphabetically by first name.
Note that characters in The Once and Future King may not exactly match with traditional Arthurian legend.
Sir Ector - Owns the Castle of the Forest Sauvage. He adopts and cares for the Wart . He is the father of Kay.
Sir Kay - Son of Sir Ector and friend of the Wart. He tries to act superior over the Wart. He follows Arthur on one adventure: the rescue mission at Morgan le Fay's castle (see The Sword in the Stone). When Arthur brings Kay the Sword in the Stone, Kay falsely claims to have drawn the sword himself, but soon gives the credit to Arthur. He later becomes a knight of the Round Table.
Morgan le Fay - The most evil of the Cornwalls, and the strongest in magic. "Le Fay" means "the Fairy". She is the antagonist in the major adventure in The Sword in the Stone. Her sisters are Elaine (not mentioned) and Morgause.
# The Once and Future King/The Sword in the Stone

The Once and Future King - The Sword in the Stone
Book I covers the Wart's (Arthur's) childhood education by Merlyn, including his adventures into Morgan le Fay's castle with Robin Wood, and his transformations into many different animals. It ends with the Wart removing the sword from the stone after King Uther's death, and his subsequent coronation.
* Chapter 1
* Chapter 2
* Chapter 3
* Chapter 4
* Chapter 5
* Chapter 6
* Chapter 7
* Chapter 8
* Chapter 9
* Chapter 10
* Chapter 11
* Chapter 12
* Chapter 13
* Chapter 14
* Chapter 15
* Chapter 16
* Chapter 17
* Chapter 18
* Chapter 19
* Chapter 20
* Chapter 21
* Chapter 22
* Chapter 23
* Chapter 24
* Chapter 25
# The Once and Future King/The Sword in the Stone/Chapter 17

The Once and Future King - Book I: The Sword in the Stone - Chapter 17

## Plot summary

The chapter begins a few months after the boar-hunt. King Pellinore gives the Questing Beast, now healthy, a two-hour headstart in the chase. Merlyn, Archimedes, and the Wart discuss the birds, a subject that has arisen due to spring's arrival. The Wart asks to become a bird again, because the last time he didn't get a chance to fly; Archimedes plans to go with him at night. The Wart then mentions his favorite bird is the rook, because rooks fly just for pleasure, not necessarily with a purpose. Archimedes mentions rooks are one of few birds with a legal and social system, and in response to Merlyn says his favorite are pigeons. Then Merlyn says he prefers the chaffinch, and continues that bird calls arise out of imitation of their prey or their environment. Finally Kay enters, ironically saying that he was shooting birds.

## Analysis

Anachronisms - Merlyn mentions both Gilbert White and Carolus Linnaeus, and Archimedes compares pigeons to Quakers. All came much later. Animals as forms of government - Archimedes mentions that the rooks have "parliaments...and a social system;" (a play upon the collective noun for rooks being a "parliament") they make "laws about the defense of the rookery, and marriage, and so forth"
# The Once and Future King/Templates

For a chapter:
The Once and Future King - Book N: The Book Title - Chapter X

## Plot summary

Arthur does something.

## Analysis

Topic -
For a book:
The Once and Future King - Book N: The Book Title
Book N covers topics with some characters.
* Chapter X
# The Once and Future King/The Sword in the Stone/Chapter 18

In this chapter, Wart speaks to Lyo-Lyok.
# The Once and Future King/Questing Beast
## Once and Future King/The Sword in the Stone/Chapter 2

(The Questing Beast is also known as the Beast Glatisant) King Pellinore has been searching for the Questing Beast for 17 years. Only a Pellinore or his next of kin can catch it. There is only one Questing Beast. It "has the head of a serpent, ah, and the body of a libbard, the haunches of a lion, and he is footed like a hart. Wherever this beast goes he makes a noise in his belly as it had been the noise of thirty couple hounds question. Except when he is drinking, of course." -King Pellinore, Chapter 2. More information on the Questing Beast can be found in Chapter 16.
# The Once and Future King/The Sword in the Stone/Chapter 1

The Once and Future King - Book I: The Sword in the Stone - Chapter 1

## Plot summary

Chapter 1 introduces us to Wart and Kay, Sir Ector, Kay's father, and Sir Grummore, a visiting knight to Sir Ector's castle.
Sir Ector and Sir Grummore discuss the need for Kay and Art to be 'eddicated', that is, educated. They decide that a tutor is required, and that one must be found via a quest.
It is July, and hay-making season. The entire castle goes to work in the field, with Sir Ector directing the operations. A lengthy description is given of the hay-making process, and the roles the two boys play in it. Wart loves hay-making, and is good at it. Kay is not so good at it, but hates to be beaten, so works at it until exhaustion.
A storm breaks and ends the days hay-making, at which point Kay and Wart decide to take Cully, the castle's goshawk, from The Mews and go hawking. Wart is concerned as to whether Cully is in a fit state for hawking, as he is deep in the moult; Kay rashly overrules, however, and off they go. Wart's fears were not unfounded, it turns out, as the chapter ends with Cully brooding away from his masters in a tree.

## Analysis

Anachronisms - Sir Ector Guinevere and Grummermore Grummersum are drinking port, a modern wine, as they discuss the need for an eddication. White reveals that they are in fact drinking metheglyn, but asserts it is easier for the reader to get the feel if port is mentioned. Similarly, Sir Grummore is said to suggest sending the boys to Eton for their education, but White then notes that Sir Grummore's actually talking about a similar institution, as Eton wasn't founded until 1440. Kay and Wart go rabbit hunting.
# The Once and Future King/The Sword in the Stone/Chapter 21

The Once and Future King - Book I: The Sword in the Stone - Chapter 21

## Plot summary

Wart is sad, because Kay is being made a knight, and he will be only Kay's squire. Merlyn suggests that the Wart learn something, mentioning on the side the worthlessness of education to a laborer. As he warns that this is the last use of his magic, he turns Wart into a badger. Wart picks on a hedgehog and threatens to eat it, and the hedgehog asks for mercy by singing. Finally, when the hedgehog reveals he is one that was in Merlyn's hut, the Wart agrees to let the hedgehog go. Then, the Wart goes to see Badger, who tells a myth about how, when God was about to shape the embryos of the species, most animals requested specialization of their parts to help them. Man, though, said he would settle for the embryo shape, because God must have some plan in His mind. After God reveals man has solved the riddle, he gives them dominion over the other animals. Badger continues, questioning Man's ability at this leadership; he mentions he can only think of seven species that war against themselves. When the Wart protests, he asks, "Which did you like best, the ants or the wild geese?"

## Analysis

Animals as governments - Badger ends by asking Wart whether he preferred the species that made war or the species that kept peace. Though Wart sees war as possibly noble, Badger reminds him that peace can accomplish much more. Badger also questions if humanity really holds the mankind is taken as an animal species.
# The Once and Future King/Major Characters

The very essence of the wonderfully weird wizard that dominates the King Arthur legends is rooted in mystery. Merlyn is a powerful teacher and a kind friend, though his absentmindedness leads Arthur into trouble. He’s already lived in the future and is fully aware of what will occur as he continues to grow younger over the years. He is the main majestic force behind Arthur’s ideals and power. This character has graced countless novels and bedtime stories, enlivening each with his quirkiness.
# The Organ Systems

An Introduction
# Space Invaders/Game Info

Space Invaders was an adaptation of the popular shooting gallery games that were a mainstay of carnivals. In this electronic version of the game, the player controlled the motions of a movable laser cannon that moved back and forth across the bottom of the video screen. Rows and rows of video aliens marched back and forth across the screen, slowly advancing down from the top to the bottom of the screen. If any of the aliens successfully landed on the bottom of the screen, the game would end. The player's laser cannon had an unlimited supply of ammunition to shoot at the aliens and destroy them before they hit the bottom of the screen. Meanwhile, the aliens would shoot back at the player, raining a hail of deadly rays and bombs that the player would have to dodge lest his cannon be destroyed. The player's cannon could be destroyed three times (the player had three lives), and the game would end after the player's last life was lost. Occasionally a bonus spaceship would fly across the top of the screen which the player could shoot for extra points.
Video games had existed prior to Space Invaders, and the game Pong by Atari was already a few years old when this game was released. But Space Invaders captured the attention and imagination of the public in a manner paralleled by few games before or since. Its science fiction based action and futuristic setting appealed to a public in the midst of Star Wars mania. The game's design included a touch of horror, as it gave players the illusion that they were in a desperate battle to save the world from alien invaders... a battle that they would eventually lose, as endless waves of electronic aliens would sweep down until they were overwhelmed. The simple background soundtrack to the game, which gave the impression of a beating heart, increased the tension and kept players coming back for more.
# Space Invaders/Walkthrough

You start off in a small ship, with three barriers between you and the aliens that you can and should occasionally take refuge in. Be warned, however, that these barriers are not invulnerable, and will eventually be shot to pieces by either the aliens or you (yes, you can destroy them too). What is usually a good strategy is to rather than hold the fire button, get into position, then hit the fire button rapidly, and move to a barrier, giving yourself covering fire. You can only have one shot on the screen at once, so make sure that there are enemies in your line of fire.
# Space Transport and Engineering Methods/Assembly

Assembly refers to putting together parts or component systems to make a functional complete device. Construction refers to permanent installations not intended to move often or ever and consisting of many devices and systems. These tasks typically consist of many simple steps in series.

## Assembly Methods

Assembly methods can be organized by the type of operator and the type of connections are made between elements

### Operator Types

Assembly methods can be categorized by the type of operator that performs the assembly:
* Manual Assembly - This is performed by humans using manual dexterity and strength. It can be assisted by tools and fixtures for leverage, speed, and positioning.
* Robotic Assembly - This is performed by robots either under human remote control or computer control.
* Automatic Assembly - This is where the devices to perform the assembly task are built into the components.

### Fluid Connections
## Construction Methods

Construction can be organized by analogy to Earth construction, with suitable modifications

### Logistics

Delivering construction equipment and supplies to the construction site from other locations.

#### Orbital Tugs

When launching multiple components from Earth that need to be collected in one place for assembly, if the orbits are similar, then a single vehicle dedicated to the job is more efficient than including a propulsion and navigation system on each component payload. We call that vehicle an Orbital Tug. Besides propulsion, navigation, and means to grab the payloads, it needs the ability to periodically refuel. This can be done with occasional payloads being fuel tanks, which the Tug attaches to itself as needed. In order not to be left stranded, it should have at least two tank locations, and install a fresh tank while the second one still has some fuel left. If you have more than one Tug, they should be designed to grab each other for heavier cargos needing more total propulsion, or in case one stops working and needs to be returned for repair.

### Materials Handling

Positioning items within the construction site to the point of use.

#### Docking

Mechanical Docking Systems

#### Deployment

Unpacking a component shipped in a compact state to an operating configuration.

### Site Work

Where you are doing construction on or near a natural body, and you need to modify the construction area by road-building, excavation, and other methods.

### Cast and Block Structures

These are not pressure tight structures, but installed by methods like casting concrete or stacking blocks

### Fabricated Structures

These are from metal, wood, plastic, or other materials delivered as components to be assembled on site

## Outfitting Methods

Outfitting involves installing and activating items within a larger construction element once it is in place.

### References:

* ↑ Gralla and De Weck Strategies for On-Orbit Assembly of Modular Spacecraft, JBIS, vol 60, p 219, 2007.
# Space Invaders/Introduction

Space Invaders is most likely one of the most widely known classic game, second only perhaps to Pac-Man or Donkey Kong, maybe Pong. It is involved in a futuristic setting where aliens are attacking Earth (or Alpha Centauri or whatever) and you must defend the planet. Originally designed by Toshihiro Nishikado, it was originally manufactured by Taito and licensed for production in the U.S. by the Midway Manufacturing division of Bally. Released in 1978, it ranks as one of the most influential video games ever created. Though simplistic by today's standards, it (along with other contemporary games such as Pac-Man) was one of the forerunners of modern video gaming.
# Space Invaders/Later Releases

The home version of Space Invaders for the Atari 2600 was a huge success. Not only did it capture the look and feel of the original arcade version, but it also offered 112 different versions of the game. Variations included invisible invaders, invisible missiles and other subtle alterations. It was the first video arcade adaptation for the Atari 2600 system. The console had been released in 1977, but sales of the 2600 skyrocketed during the 1980 holiday shopping season, as millions of families bought the Atari system just so that they could play Space Invaders. This marked the beginning of home video adaptations of popular arcade games (some of which were less than successful).
Space Invaders spawned a large number of imitators, as other video game manufacturers sought to cash in on its successful formula, and released many arcade games featuring variations of the same theme: attacking aliens from outer space.
Taito released several sequels to Space Invaders in the arcades over the years — Space Invaders Part II ("Deluxe Space Invaders") (1979), Return of the Invaders (1985), Majestic Twelve: The Space Invaders Part IV ("Super Space Invaders '91") (1990), Space Invaders DX (1994), and Akkanvader ("Space Invaders '95: The Attack Of The Lunar Loonies") (1995).
The release of Pac-Man in 1980 broke the mold of "alien invader" games, and it opened the way for more creativity and originality in the video gaming industry. But the legacy of Space Invaders lives on, and action-based science fiction games continue to pay homage to the original shoot-em-up video game.
Enemies based on Space Invaders also appeared in Bubble Bobble games. To top it off, Bubble Symphony featured both a giant Space Invader guarded by aliens who move just like in Space Invaders as a boss and cameo appearances by the player controlled spaceship as a companion for the main characters.
Super Space Invaders was a Space Invaders clone for a range of systems including the Amiga, Master System and Super Nintendo Entertainment System featuring greatly upgraded graphics and sound, along with additions to the gameplay such as power-ups and advanced forms of aliens. Despite this, it was given average reviews at best, and sold very poorly.
Space Raiders (Space Invaders: Invasion Day in Europe) was released in 2001 and is a 3D version of space invaders. Rather than a laser at the bottom shooting up, the player is a human shooting forward at aliens in the street: a prime example of how much games have changed over the years.
# Space Invaders/Popular Reaction

The enormous blockbuster success of Space Invaders made the entertainment industry sit up and take notice. Within the first year of its release, the game had generated revenue ranging in the hundreds of millions of dollars—with the majority coming from teenagers and school children, who pumped millions of quarters into the game at a frenzied pace. Video game mania among the youths in the United States was so pervasive that for a time, some children and teenagers were panhandling and begging strangers for quarters so that they could continue playing the game.
This phenomenon led to the first outcries against video games by groups of concerned adults, who felt that the content of video games was a corrupting influence on children. In the case of Space Invaders, the issue was not usually the highly abstract and stylized violence, but with the fact that the game could not be "won" in any familiar sense. As framed by the critics, the player is powerless to do more than to delay an inevitable defeat. They suggested that the game taught an unwholesome life lesson, inculcated defeatism, and possibly was intended to put the United States at a disadvantage in its economic rivalry with Japan by undermining the competitive spirit of American youth.
Space Invaders became very popular in part due to its new style of gameplay. Up until its release, video games were timed to a clock, and once a player's time was up (plus possible bonus time), the game ended. With Space Invaders, the game ended only when the player had exhausted the three allotted "lives": a person could therefore play for as long as their skill level allowed.
# Space Invaders/Street Art

Space Invaders has also inspired a form of street art, championed in particular by an artist named "Invader". Using ceramic tiles, Invader and other street artists cement together mosaic images of traditional Space Invader aliens, bonus spaceships, and variations on those themes, sometimes including characters from the Pac-Man series of video games. The mosaics, many being small yet others as large as murals, are cemented onto building walls, lamp post bases, and other structures. The form has spread throughout the world since the 1990s, especially among major European cities, and continues to be replicated.
# Usability for Nerds/Convincing decision makers

The first step in the design of a user friendly machine or software is to convince the decision makers that usability is important and that the usability of existing designs can be improved.
The decision makers may be managing directors, marketing department and development engineers in an innovative company. Some of these may have conservative attitudes to design and lack understanding of the importance of user friendly designs.
It is necessary to explain to these persons what usability is. The best explanation is examples. And the most convincing example you can give is probably a videotaped usability test of an existing product from the same company. Persons who are very familiar with such a product cannot imagine that users can have problems using their product until they actually see a video of a user having problems.
← Open standards · User profile →
# Usability for Nerds/Error tolerance

Human language is generally quite error tolerant. If one word of a sentence is wrong or missing then you can still guess what 7#ǝ meaning should be. Computers are, by nature, quite opposite. A comma instead of a semicolon in a computer program can make a space rocket fall down. This is certainly a usability problem. Humans are not always very careful about the correct spelling of computer commands.
Ideally, computers should be error tolerant. For example, it is fairly simple to make a computer accept alternative spellings of a command or a web address. More advanced systems may search for a similar valid word:
But there is a problem when you make the computer guess what the user wants, and the computer's guess is wrong. As explained on the previous page, the system should never correct what it thinks is an error without confirmation from the user.
← Can I guess what the user wants? · WYSIWYG →