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Parker and Stone developed South Park from two animated short films, both titled The Spirit of Christmas, released in 1992 and 1995. The second short became one of the first Internet viral videos, leading to the series' production. The pilot episode was produced using cutout animation; the remainder of the series uses computer animation recalling the prior technique. Since the fourth season, episodes are generally written and produced during the week preceding its broadcast, with Parker serving as the lead writer and director.
Since its debut on August 13, 1997, 328 episodes of South Park have been broadcast. It debuted with great success, consistently earning the highest ratings of any basic cable program. Subsequent ratings have varied, but it remains one of Comedy Central's longest-running programs. In August 2021, South Park was renewed through 2027, and a series of television specials was announced for Paramount+, the first two of which were released later that year.[2][3] In October 2019, it was announced that WarnerMedia acquired exclusive streaming rights to South Park starting in June 2020 for HBO Max.[4] The series' twenty-sixth season premiered on February 8, 2023.[5]
South Park has received critical acclaim, and is included in various publications' lists of the greatest television shows. It has received numerous accolades, including five Primetime Emmy Awards and a Peabody Award. A theatrical film, South Park: Bigger, Longer & Uncut, was released in June 1999 to commercial and critical success, garnering an Academy Award nomination. In 2013, TV Guide ranked South Park the tenth Greatest TV Cartoon of All Time.[6]
South Park centers around four boys: Stan Marsh, Kyle Broflovski, Eric Cartman and Kenny McCormick. The boys live in the fictional small town of South Park, located within the real-life South Park basin in the Rocky Mountains of central Colorado,[7] approximately a one-hour drive from Denver.[8] The town is also home to an assortment of other characters, including students, families, elementary school staff, and other various residents.[9] Prominent settings include South Park Elementary, various neighborhoods and the surrounding mountain range, actual Colorado landmarks, and the businesses along the town's main street, all of which are based on the appearance of similar locations in Fairplay, Colorado.[7][9] As one of the few television programs set in the Mountain West region that takes place outside the urban core of Denver, South Park frequently features the unique culture of the region, including cattle ranchers, Old West theme parks, snowy climates, mountaineering, Mormons, real-life Colorado locations such as Casa Bonita and Cave of the Winds, and many other regionally specific characteristics.
Stan is portrayed as an average American boy; however, he has many mishaps throughout the series. In the first 22 seasons, Stan lived in South Park, but in the episodes during and after season 22, Stan resided in Tegridy Farms. Kyle is Jewish, and his portrayal as one of the few such people in South Park is often dealt with satirically.[10] Stan is modeled after Parker, while Kyle is modeled after Stone. They are best friends, and their friendship, symbolically intended to reflect Parker and Stone's friendship,[11] is a common topic throughout the series. Cartman (as he is commonly referred to) is amoral and increasingly psychopathic, and is commonly portrayed as an antagonist. His staunch antisemitism has resulted in a progressive rivalry with Kyle.[10][12] Kenny, who comes from a poor family, tightly wears his parka hood to the point where it obscures most of his face and muffles his speech. During the first five seasons, Kenny died in almost every episode before reappearing in the next with no definite explanation. He was killed off in the fifth season episode "Kenny Dies", before being reintroduced in the sixth season finale, "Red Sleigh Down". Since then, Kenny is depicted as dying sporadically. During the first 58 episodes, the children were in the third grade. During the fourth season, they entered the fourth grade, where they have remained ever since.[13][14]
Plots are often set in motion by events, ranging from the fairly typical to the supernatural and extraordinary, which frequently happen in the town.[15] The boys often act as the voice of reason when these events cause panic or incongruous behavior among the adult populace, who are customarily depicted as irrational, gullible, and prone to overreaction.[7][16] They are frequently confused by the contradictory and hypocritical behavior of their parents and other adults, and often perceive them as having distorted views on morality and society.[9][17]
Each episode opens with a tongue-in-cheekall persons fictitious disclaimer: "All characters and events in this show—even those based on real people—are entirely fictional. All celebrity voices are impersonated.....poorly. The following program contains coarse language and due to its content it should not be viewed by anyone."[18][19]
South Park was the first weekly program to be rated TV-MA,[20] and is generally intended for adult audiences.[21][22][23] The boys and most other child characters use strong profanity, with only the most taboo words being bleeped during a typical broadcast.[9] Parker and Stone perceive this as the manner in which real-life small boys speak when they are alone.[24][25]
Early episodes tended to be shock value-oriented and featured more slapstick-style humor.[33] While social satire had been used on the show occasionally earlier on, it became more prevalent as the series progressed, with the show retaining some of its focus on the boys' fondness of scatological humor in an attempt to remind adult viewers "what it was like to be eight years old".[10] Parker and Stone also began further developing other characters by giving them larger roles in certain storylines,[10] and began writing plots as parables based on religion, politics, and numerous other topics.[9] This provided the opportunity for the show to spoof both extreme sides of contentious issues,[34] while lampooning both liberal and conservative points of view.[9][16][35] Rebecca Raphael described the show as "an equal opportunity offender",[15] while Parker and Stone describe their main purpose as to "be funny" and "make people laugh",[36][37] while stating that no particular topic or group of people be exempt from mockery and satire.[16][32][38][39][40]
Parker and Stone insist that the show is still more about "kids being kids" and "what it's like to be in [elementary school] in America",[41] stating that the introduction of a more satirical element to the series was the result of the two adding more of a "moral center" to the show so that it would rely less on simply being crude and shocking in an attempt to maintain an audience.[36][37] While profane, Parker notes that there is still an "underlying sweetness" aspect to the child characters,[34] and Time described the boys as "sometimes cruel but with a core of innocence".[11] Usually, the boys or other characters pondered over what transpired during an episode and conveyed the important lesson taken from it with a short monologue. During earlier seasons, this speech commonly began with a variation of the phrase "You know, I've learned something today...".[42]
South Park creators Trey Parker (left) and Matt Stone continue to do most of the writing, directing and voice acting on the show.
Parker and Stone met in film class at the University of Colorado in 1992 and discovered a shared love of Monty Python, which they often cite as one of their primary inspirations.[43] They created an animated short entitled The Spirit of Christmas.[27] The film was created by animating construction paper cutouts with stop motion, and features prototypes of the main characters of South Park, including a character resembling Cartman but named "Kenny", an unnamed character resembling what is today Kenny, and two near-identical unnamed characters who resemble Stan and Kyle. Fox Broadcasting Company executive and mutual friend Brian Graden commissioned Parker and Stone to create a second short film as a video Christmas card. Created in 1995, the second The Spirit of Christmas short resembled the style of the later series more closely.[44] To differentiate between the two homonymous shorts, the first short is often referred to as Jesus vs. Frosty, and the second short as Jesus vs. Santa. Graden sent copies of the video to several of his friends, and from there it was copied and distributed, including on the internet, where it became one of the first viral videos.[27][11]
As Jesus vs. Santa became more popular, Parker and Stone began talks of developing the short into a television series about four children residing in the fictional Colorado town of South Park. Fox eagerly agreed to meet with the duo about the show's premise, having prided itself on edgier products such as Cops, The Simpsons, and The X-Files. However, during the meeting at the Fox office in Century City, disagreements between the two creators and the network began to arise, mainly over the latter's refusal to air a show that included a supporting talking stool character named Mr. Hankey. Some executives at 20th Century Fox Television (which was to produce the series) agreed with its then-sister network's stance on Mr. Hankey and repeatedly requested Parker and Stone to remove the character in order for the show to proceed. Refusing to meet their demands, the duo cut ties with Fox and its sister companies all together and began shopping the series somewhere else.[45][46][47]
The two then entered negotiations with both MTV and Comedy Central. Parker preferred the show be produced by Comedy Central, fearing that MTV would turn it into a kids show.[48] When Comedy Central executive Doug Herzog watched the short, he commissioned for it to be developed into a series.[27][49] Parker and Stone assembled a small staff and spent three months creating the pilot episode "Cartman Gets an Anal Probe".[50]South Park was in danger of being canceled before it even aired when the show fared poorly with test audiences, particularly with women. However, the shorts were still gaining more popularity over the Internet, and Comedy Central ordered a run of six episodes.[36][48]South Park debuted with "Cartman Gets an Anal Probe" on August 13, 1997.[51]
Except for the pilot episode, which was produced using cutout animation, all episodes of South Park are created with the use of software, primarily Autodesk Maya.[52] As opposed to the pilot, which took three months to complete,[53] and other animated sitcoms, which are traditionally hand-drawn by companies in South Korea in a process that takes roughly eight to nine months,[27][35] individual episodes of South Park take significantly less time to produce. Using computers as an animation method, the show's production staff were able to generate an episode in about three weeks during the first seasons.[54] Now, with a staff of about 70 people, episodes are typically completed in one week,[27][34][35] with some in as little as three to four days.[55][56][57] Nearly the entire production of an episode is accomplished within one set of offices, which were originally at a complex in Westwood, Los Angeles, California and are now part of South Park Studios in Culver City, California.[49][53] Parker and Stone have been the show's executive producers throughout its entire history.[58]Debbie Liebling, who was Senior Vice President of original programming and development for Comedy Central, also served as an executive producer during the show's first five seasons, coordinating the show's production efforts between South Park Studios and Comedy Central's headquarters in New York City.[59][60] During its early stages, finished episodes of South Park were hastily recorded to D-2 to be sent to Comedy Central for airing in just a few days' time.[61] Each episode used to cost $250,000.[62]
After exchanging ideas, Parker will write a script, and from there the entire team of animators, editors, technicians, and sound engineers will each typically work 100–120 hours in the ensuing week.[50] Since the show's fourth season (2000), Parker has assumed most of the show's directorial duties, while Stone relinquished his share of the directing to focus on handling the coordination and business aspects of the production.[27][71] On Wednesday, a completed episode is sent to Comedy Central's headquarters via satellite uplink, sometimes just a few hours before its air time of 10 PM Eastern Time.[27][72]
Parker and Stone state that subjecting themselves to a one-week deadline creates more spontaneity amongst themselves in the creative process, which they feel results in a funnier show.[27] The schedule also allows South Park to both stay more topical and respond more quickly to specific current events than other satiric animated shows.[10][73] One of the earliest examples of this was in the season four (2000) episode "Quintuplets 2000", which references the United States Border Patrol's raid of a house during the Elián González affair, an event which occurred only four days before the episode originally aired.[74] The season nine (2005) episode "Best Friends Forever" references the Terri Schiavo case,[25][34] and originally aired in the midst of the controversy and less than 12 hours before she died.[35][75] A scene in the season seven (2003) finale "It's Christmas in Canada" references the discovery of dictator Saddam Hussein in a "spider hole" and his subsequent capture, which happened a mere three days prior to the episode airing.[76] The season 12 (2008) episode "About Last Night..." revolves around Barack Obama's victory in the 2008 presidential election, and aired less than 24 hours after Obama was declared the winner, using segments of dialogue from Obama's real victory speech.[77]
On October 16, 2013, the show failed to meet their production deadline for the first time ever, after a power outage on October 15 at the production studio prevented the episode, season 17's "Goth Kids 3: Dawn of the Posers", from being finished in time. The episode was rescheduled to air a week later on October 23, 2013.[78]
The various stages of production (from top to bottom): the storyboard sketch, the CorelDRAW props with stock character models, and a frame from the fully rendered episode, "Super Fun Time"
The show's style of animation is inspired by the paper cut-out cartoons made by Terry Gilliam for Monty Python's Flying Circus, of which Parker and Stone have been lifelong fans.[48][11][79]Construction paper and traditional stop motioncutout animation techniques were used in the original animated shorts and in the pilot episode. Subsequent episodes have been produced by computer animation, providing a similar look to the originals while requiring a fraction of the time to produce. Before computer artists begin animating an episode, a series of animatics drawn in Toon Boom are provided by the show's storyboard artists.[50][80]
The characters and objects are composed of simple geometrical shapes and primary and secondary colors. Most child characters are the same size and shape, and are distinguished by their clothing, hair and skin colors, and headwear.[17] Characters are mostly presented two-dimensionally and from only one angle. Their movements are animated in an intentionally jerky fashion, as they are purposely not offered the same free range of motion associated with hand-drawn characters.[10][53][81] Occasionally, some non-fictional characters are depicted with photographic cutouts of their actual head and face in lieu of a face reminiscent of the show's traditional style. Canadians on the show are often portrayed in an even more minimalist fashion; they have simple beady eyes, and the top halves of their heads simply flap up and down when the characters speak.[38]
When the show began using computers, the cardboard cutouts were scanned and re-drawn with CorelDRAW, then imported into PowerAnimator, which was used with SGI workstations to animate the characters.[50][53] The workstations were linked to a 54-processor render farm that could render 10 to 15 shots an hour.[50] Beginning with
This program unpacks Playstation 3 Theme files (.p3t) so that you can touch-up an existing theme to your likings or use a certain wallpaper from it (as many themes have multiple). But remember, if you use content from another theme and release it, be sure to give credit!
Download p3textractor.zip from above. Extract the files to a folder with a program such as WinZip or WinRAR. Now there are multiple ways to extract the theme.
The first way is to simply open the p3t file with p3textractor.exe. If you don’t know how to do this, right click the p3t file and select Open With. Alternatively, open the p3t file and it will ask you to select a program to open with. Click Browse and find p3textractor.exe from where you previously extracted it to. It will open CMD and extract the theme to extracted.[filename]. After that, all you need to do for any future p3t files is open them and it will extract.
The second way is very simple. Just drag the p3t file to p3textractor.exe. It will open CMD and extract the theme to extracted.[filename].
For the third way, first put the p3t file you want to extract into the same folder as p3textractor.exe. Open CMD and browse to the folder with p3extractor.exe. Enter the following: p3textractor filename.p3t [destination path]Replace filename with the name of the p3t file, and replace [destination path] with the name of the folder you want the files to be extracted to. A destination path is not required. By default it will extract to extracted.filename.
Parker and Stone developed South Park from two animated short films, both titled The Spirit of Christmas, released in 1992 and 1995. The second short became one of the first Internet viral videos, leading to the series' production. The pilot episode was produced using cutout animation; the remainder of the series uses computer animation recalling the prior technique. Since the fourth season, episodes are generally written and produced during the week preceding its broadcast, with Parker serving as the lead writer and director.
Since its debut on August 13, 1997, 328 episodes of South Park have been broadcast. It debuted with great success, consistently earning the highest ratings of any basic cable program. Subsequent ratings have varied, but it remains one of Comedy Central's longest-running programs. In August 2021, South Park was renewed through 2027, and a series of television specials was announced for Paramount+, the first two of which were released later that year.[2][3] In October 2019, it was announced that WarnerMedia acquired exclusive streaming rights to South Park starting in June 2020 for HBO Max.[4] The series' twenty-sixth season premiered on February 8, 2023.[5]
South Park has received critical acclaim, and is included in various publications' lists of the greatest television shows. It has received numerous accolades, including five Primetime Emmy Awards and a Peabody Award. A theatrical film, South Park: Bigger, Longer & Uncut, was released in June 1999 to commercial and critical success, garnering an Academy Award nomination. In 2013, TV Guide ranked South Park the tenth Greatest TV Cartoon of All Time.[6]
South Park centers around four boys: Stan Marsh, Kyle Broflovski, Eric Cartman and Kenny McCormick. The boys live in the fictional small town of South Park, located within the real-life South Park basin in the Rocky Mountains of central Colorado,[7] approximately a one-hour drive from Denver.[8] The town is also home to an assortment of other characters, including students, families, elementary school staff, and other various residents.[9] Prominent settings include South Park Elementary, various neighborhoods and the surrounding mountain range, actual Colorado landmarks, and the businesses along the town's main street, all of which are based on the appearance of similar locations in Fairplay, Colorado.[7][9] As one of the few television programs set in the Mountain West region that takes place outside the urban core of Denver, South Park frequently features the unique culture of the region, including cattle ranchers, Old West theme parks, snowy climates, mountaineering, Mormons, real-life Colorado locations such as Casa Bonita and Cave of the Winds, and many other regionally specific characteristics.
Stan is portrayed as an average American boy; however, he has many mishaps throughout the series. In the first 22 seasons, Stan lived in South Park, but in the episodes during and after season 22, Stan resided in Tegridy Farms. Kyle is Jewish, and his portrayal as one of the few such people in South Park is often dealt with satirically.[10] Stan is modeled after Parker, while Kyle is modeled after Stone. They are best friends, and their friendship, symbolically intended to reflect Parker and Stone's friendship,[11] is a common topic throughout the series. Cartman (as he is commonly referred to) is amoral and increasingly psychopathic, and is commonly portrayed as an antagonist. His staunch antisemitism has resulted in a progressive rivalry with Kyle.[10][12] Kenny, who comes from a poor family, tightly wears his parka hood to the point where it obscures most of his face and muffles his speech. During the first five seasons, Kenny died in almost every episode before reappearing in the next with no definite explanation. He was killed off in the fifth season episode "Kenny Dies", before being reintroduced in the sixth season finale, "Red Sleigh Down". Since then, Kenny is depicted as dying sporadically. During the first 58 episodes, the children were in the third grade. During the fourth season, they entered the fourth grade, where they have remained ever since.[13][14]
Plots are often set in motion by events, ranging from the fairly typical to the supernatural and extraordinary, which frequently happen in the town.[15] The boys often act as the voice of reason when these events cause panic or incongruous behavior among the adult populace, who are customarily depicted as irrational, gullible, and prone to overreaction.[7][16] They are frequently confused by the contradictory and hypocritical behavior of their parents and other adults, and often perceive them as having distorted views on morality and society.[9][17]
Each episode opens with a tongue-in-cheekall persons fictitious disclaimer: "All characters and events in this show—even those based on real people—are entirely fictional. All celebrity voices are impersonated.....poorly. The following program contains coarse language and due to its content it should not be viewed by anyone."[18][19]
South Park was the first weekly program to be rated TV-MA,[20] and is generally intended for adult audiences.[21][22][23] The boys and most other child characters use strong profanity, with only the most taboo words being bleeped during a typical broadcast.[9] Parker and Stone perceive this as the manner in which real-life small boys speak when they are alone.[24][25]
Early episodes tended to be shock value-oriented and featured more slapstick-style humor.[33] While social satire had been used on the show occasionally earlier on, it became more prevalent as the series progressed, with the show retaining some of its focus on the boys' fondness of scatological humor in an attempt to remind adult viewers "what it was like to be eight years old".[10] Parker and Stone also began further developing other characters by giving them larger roles in certain storylines,[10] and began writing plots as parables based on religion, politics, and numerous other topics.[9] This provided the opportunity for the show to spoof both extreme sides of contentious issues,[34] while lampooning both liberal and conservative points of view.[9][16][35] Rebecca Raphael described the show as "an equal opportunity offender",[15] while Parker and Stone describe their main purpose as to "be funny" and "make people laugh",[36][37] while stating that no particular topic or group of people be exempt from mockery and satire.[16][32][38][39][40]
Parker and Stone insist that the show is still more about "kids being kids" and "what it's like to be in [elementary school] in America",[41] stating that the introduction of a more satirical element to the series was the result of the two adding more of a "moral center" to the show so that it would rely less on simply being crude and shocking in an attempt to maintain an audience.[36][37] While profane, Parker notes that there is still an "underlying sweetness" aspect to the child characters,[34] and Time described the boys as "sometimes cruel but with a core of innocence".[11] Usually, the boys or other characters pondered over what transpired during an episode and conveyed the important lesson taken from it with a short monologue. During earlier seasons, this speech commonly began with a variation of the phrase "You know, I've learned something today...".[42]
South Park creators Trey Parker (left) and Matt Stone continue to do most of the writing, directing and voice acting on the show.
Parker and Stone met in film class at the University of Colorado in 1992 and discovered a shared love of Monty Python, which they often cite as one of their primary inspirations.[43] They created an animated short entitled The Spirit of Christmas.[27] The film was created by animating construction paper cutouts with stop motion, and features prototypes of the main characters of South Park, including a character resembling Cartman but named "Kenny", an unnamed character resembling what is today Kenny, and two near-identical unnamed characters who resemble Stan and Kyle. Fox Broadcasting Company executive and mutual friend Brian Graden commissioned Parker and Stone to create a second short film as a video Christmas card. Created in 1995, the second The Spirit of Christmas short resembled the style of the later series more closely.[44] To differentiate between the two homonymous shorts, the first short is often referred to as Jesus vs. Frosty, and the second short as Jesus vs. Santa. Graden sent copies of the video to several of his friends, and from there it was copied and distributed, including on the internet, where it became one of the first viral videos.[27][11]
As Jesus vs. Santa became more popular, Parker and Stone began talks of developing the short into a television series about four children residing in the fictional Colorado town of South Park. Fox eagerly agreed to meet with the duo about the show's premise, having prided itself on edgier products such as Cops, The Simpsons, and The X-Files. However, during the meeting at the Fox office in Century City, disagreements between the two creators and the network began to arise, mainly over the latter's refusal to air a show that included a supporting talking stool character named Mr. Hankey. Some executives at 20th Century Fox Television (which was to produce the series) agreed with its then-sister network's stance on Mr. Hankey and repeatedly requested Parker and Stone to remove the character in order for the show to proceed. Refusing to meet their demands, the duo cut ties with Fox and its sister companies all together and began shopping the series somewhere else.[45][46][47]
The two then entered negotiations with both MTV and Comedy Central. Parker preferred the show be produced by Comedy Central, fearing that MTV would turn it into a kids show.[48] When Comedy Central executive Doug Herzog watched the short, he commissioned for it to be developed into a series.[27][49] Parker and Stone assembled a small staff and spent three months creating the pilot episode "Cartman Gets an Anal Probe".[50]South Park was in danger of being canceled before it even aired when the show fared poorly with test audiences, particularly with women. However, the shorts were still gaining more popularity over the Internet, and Comedy Central ordered a run of six episodes.[36][48]South Park debuted with "Cartman Gets an Anal Probe" on August 13, 1997.[51]
Except for the pilot episode, which was produced using cutout animation, all episodes of South Park are created with the use of software, primarily Autodesk Maya.[52] As opposed to the pilot, which took three months to complete,[53] and other animated sitcoms, which are traditionally hand-drawn by companies in South Korea in a process that takes roughly eight to nine months,[27][35] individual episodes of South Park take significantly less time to produce. Using computers as an animation method, the show's production staff were able to generate an episode in about three weeks during the first seasons.[54] Now, with a staff of about 70 people, episodes are typically completed in one week,[27][34][35] with some in as little as three to four days.[55][56][57] Nearly the entire production of an episode is accomplished within one set of offices, which were originally at a complex in Westwood, Los Angeles, California and are now part of South Park Studios in Culver City, California.[49][53] Parker and Stone have been the show's executive producers throughout its entire history.[58]Debbie Liebling, who was Senior Vice President of original programming and development for Comedy Central, also served as an executive producer during the show's first five seasons, coordinating the show's production efforts between South Park Studios and Comedy Central's headquarters in New York City.[59][60] During its early stages, finished episodes of South Park were hastily recorded to D-2 to be sent to Comedy Central for airing in just a few days' time.[61] Each episode used to cost $250,000.[62]
After exchanging ideas, Parker will write a script, and from there the entire team of animators, editors, technicians, and sound engineers will each typically work 100–120 hours in the ensuing week.[50] Since the show's fourth season (2000), Parker has assumed most of the show's directorial duties, while Stone relinquished his share of the directing to focus on handling the coordination and business aspects of the production.[27][71] On Wednesday, a completed episode is sent to Comedy Central's headquarters via satellite uplink, sometimes just a few hours before its air time of 10 PM Eastern Time.[27][72]
Parker and Stone state that subjecting themselves to a one-week deadline creates more spontaneity amongst themselves in the creative process, which they feel results in a funnier show.[27] The schedule also allows South Park to both stay more topical and respond more quickly to specific current events than other satiric animated shows.[10][73] One of the earliest examples of this was in the season four (2000) episode "Quintuplets 2000", which references the United States Border Patrol's raid of a house during the Elián González affair, an event which occurred only four days before the episode originally aired.[74] The season nine (2005) episode "Best Friends Forever" references the Terri Schiavo case,[25][34] and originally aired in the midst of the controversy and less than 12 hours before she died.[35][75] A scene in the season seven (2003) finale "It's Christmas in Canada" references the discovery of dictator Saddam Hussein in a "spider hole" and his subsequent capture, which happened a mere three days prior to the episode airing.[76] The season 12 (2008) episode "About Last Night..." revolves around Barack Obama's victory in the 2008 presidential election, and aired less than 24 hours after Obama was declared the winner, using segments of dialogue from Obama's real victory speech.[77]
On October 16, 2013, the show failed to meet their production deadline for the first time ever, after a power outage on October 15 at the production studio prevented the episode, season 17's "Goth Kids 3: Dawn of the Posers", from being finished in time. The episode was rescheduled to air a week later on October 23, 2013.[78]
The various stages of production (from top to bottom): the storyboard sketch, the CorelDRAW props with stock character models, and a frame from the fully rendered episode, "Super Fun Time"
The show's style of animation is inspired by the paper cut-out cartoons made by Terry Gilliam for Monty Python's Flying Circus, of which Parker and Stone have been lifelong fans.[48][11][79]Construction paper and traditional stop motioncutout animation techniques were used in the original animated shorts and in the pilot episode. Subsequent episodes have been produced by computer animation, providing a similar look to the originals while requiring a fraction of the time to produce. Before computer artists begin animating an episode, a series of animatics drawn in Toon Boom are provided by the show's storyboard artists.[50][80]
The characters and objects are composed of simple geometrical shapes and primary and secondary colors. Most child characters are the same size and shape, and are distinguished by their clothing, hair and skin colors, and headwear.[17] Characters are mostly presented two-dimensionally and from only one angle. Their movements are animated in an intentionally jerky fashion, as they are purposely not offered the same free range of motion associated with hand-drawn characters.[10][53][81] Occasionally, some non-fictional characters are depicted with photographic cutouts of their actual head and face in lieu of a face reminiscent of the show's traditional style. Canadians on the show are often portrayed in an even more minimalist fashion; they have simple beady eyes, and the top halves of their heads simply flap up and down when the characters speak.[38]
When the show began using computers, the cardboard cutouts were scanned and re-drawn with CorelDRAW, then imported into PowerAnimator, which was used with SGI workstations to animate the characters.[50][53] The workstations were linked to a 54-processor render farm that could render 10 to 15 shots an hour.[50] Beginning with
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Bleach is the generic name for any chemical product that is used industrially or domestically to remove colour (whitening) from fabric or fiber (in a process called bleaching) or to disinfect after cleaning. It often refers specifically to a dilute solution of sodium hypochlorite, also called "liquid bleach".
Many bleaches have broad-spectrum bactericidal properties, making them useful for disinfecting and sterilizing. They are used in swimming pool sanitation to control bacteria, viruses, and algae and in many places where sterile conditions are required. They are also used in many industrial processes, notably in the bleaching of wood pulp. Bleaches also have other minor uses, like removing mildew, killing weeds, and increasing the longevity of cut flowers.[1]
Bleaches work by reacting with many coloured organic compounds, such as natural pigments, and turning them into colourless ones. While most bleaches are oxidizing agents (chemicals that can remove electrons from other molecules), some are reducing agents (that donate electrons).
Chlorine, a powerful oxidizer, is the active agent in many household bleaches. Since pure chlorine is a toxic corrosive gas, these products usually contain hypochlorite, which releases chlorine. "Bleaching powder" usually refers to a formulation containing calcium hypochlorite.[citation needed]
Bleaches generally react with many other organic substances besides the intended coloured pigments, so they can weaken or damage natural materials like fibers, cloth, and leather, and intentionally applied dyes, such as the indigo of denim. For the same reason, ingestion of the products, breathing of the fumes, or contact with skin or eyes can cause bodily harm and damage health.
Early method of bleaching cotton and linen goods on lawns, using a combination of exposure to direct sunlight and the application of water
The earliest form of bleaching involved spreading fabrics and cloth out in a bleachfield to be whitened by the action of the Sun and water.[4][5] In the 17th century, there was a significant cloth bleaching industry in Western Europe, using alternating alkaline baths (generally lye) and acid baths (such as lactic acid from sour milk, and later diluted sulfuric acid). The whole process lasted up to six months.[4]
Chlorine-based bleaches, which shortened that process from months to hours, were invented in Europe in the late 18th century. Swedish chemist Carl Wilhelm Scheele discovered chlorine in 1774,[4] and in 1785 Savoyard scientist Claude Berthollet recognized that it could be used to bleach fabrics.[4] Berthollet also discovered sodium hypochlorite, which became the first commercial bleach, named Eau de Javel ("Javel water") after the borough of Javel, near Paris, where it was produced.
Scottish chemist and industrialist Charles Tennant proposed in 1798 a solution of calcium hypochlorite as an alternative for Javel water, and patented bleaching powder (solid calcium hypochlorite) in 1799.[4][6] Around 1820, French chemist Antoine Germain Labarraque discovered the disinfecting and deodorizing ability of hypochlorites and was instrumental in popularizing their use for such purpose.[7] His work greatly improved medical practice, public health, and the sanitary conditions in hospitals, slaughterhouses, and all industries dealing with animal products.[8]
Louis Jacques Thénard first produced hydrogen peroxide in 1818 by reacting barium peroxide with nitric acid.[9] Hydrogen peroxide was first used for bleaching in 1882, but did not become commercially important until after 1930.[10]Sodium perborate as a laundry bleach has been used in Europe since the early twentieth century, and became popular in North America in the 1980s.[11]
Colours of natural organic materials typically arise from organic pigments, such as beta carotene. Chemical bleaches work in one of two ways:
An oxidizing bleach works by breaking the chemical bonds that make up the chromophore. This changes the molecule into a different substance that either does not contain a chromophore or contains a chromophore that does not absorb visible light. This is the mechanism of bleaches based on chlorine but also of oxygen-anions which react through the initial nucleophilic attack.[12]
A reducing bleach works by converting double bonds in the chromophore into single bonds. This eliminates the ability of the chromophore to absorb visible light. This is the mechanism of bleaches based on sulfur dioxide.[13]
Sunlight acts as a bleach through a process leading to similar results: high-energy photons of light, often in the violet or ultraviolet range, can disrupt the bonds in the chromophore, rendering the resulting substance colourless. Extended exposure often leads to massive discolouration usually reducing the colours to a white and typically very faded blue.[14]
The broad-spectrum effectiveness of most bleaches is due to their general chemical reactivity against organic compounds, rather than the selective inhibitory or toxic actions of antibiotics. They irreversibly denature or destroy many proteins, including all prions, making them extremely versatile disinfectants.
Hypochlorite bleaches in low concentration were also found to attack bacteria by interfering with heat shock proteins on their walls.[15] According to 2013 Home Hygiene and Health report,[16] using bleach, whether chlorine- or peroxide-based, significantly increases germicidal efficiency of laundry even at low temperatures (30-40 degrees Celsius), which makes it possible to eliminate viruses, bacteria, and fungi from a variety of clothing in a home setting.[17]
Chlorine-based bleaches are found in many household "bleach" products, as well as in specialized products for hospitals, public health, water chlorination, and industrial processes.
The grade of chlorine-based bleaches is often expressed as percent active chlorine. One gram of 100% active chlorine bleach has the same bleaching power as one gram of elemental chlorine.
The most common chlorine-based bleaches are:
Sodium hypochlorite (NaClO), usually as a 3–6% solution in water, usually called "liquid bleach" or just "bleach". Historically called "Javel water" (French: eau de Javel). It is used in many households to whiten laundry, disinfect hard surfaces in kitchens and bathrooms, treat water for drinking, and keep swimming pools free of infectious agents.
Bleaching powder (formerly known as "chlorinated lime"), usually a mixture of calcium hypochlorite (Ca(ClO) 2), calcium hydroxide (slaked lime, Ca(OH) 2), and calcium chloride (CaCl 2) in variable amounts.[18] Sold as a white powder or in tablets, it is used in many of the same applications as sodium hypochlorite but is more stable and contains more available chlorine.
Peroxide-based bleaches are characterized by the peroxide chemical group, namely two oxygen atoms connected by a single bond, (–O–O–). This bond is easily broken, giving rise to very reactive oxygen species, which are the active agents of bleach.
The main products in this class are:
Hydrogen peroxide itself (H 2O 2). It is used, for example, to bleach wood pulp and hair or to prepare other bleaching agents like perborates, percarbonates, peracids, etc.
Sodium percarbonate (Na 2H 3CO 6), an adduct of hydrogen peroxide and sodium carbonate ("soda ash" or "washing soda", Na 2CO 3). Dissolved in water, it yields a solution of the two products, that combines the degreasing action of the carbonate with the bleaching action of the peroxide.
Sodium perborate (Na 2H 4B 2O 8). Dissolved in water it forms some hydrogen peroxide, but also the perborate anion (B(OOH)(OH)− 3) which can perform nucleophilic oxidation.[20]
Peracetic (peroxoacetic) acid (H 3CC(O)OOH). Generated in situ by some laundry detergents, and also marketed for use as industrial and agricultural disinfection and water treatment.[21]
Ozone (O 3). While not properly a peroxide, its mechanism of action is similar. It is used in the manufacture of paper products, especially newsprint and white Kraft paper.[23]
Potassium persulfate (K2S2O8) and other persulfate salts. It, alongside ammonium and sodium persulfate, is common in hair-lightening products.[24]
Sodium dithionite (also known as sodium hydrosulfite) is one of the most important reductive bleaching agents. It is a white crystalline powder with a weak sulfurous odor. It can be obtained by reacting sodium bisulfite with zinc
2 NaHSO3 + Zn → Na2S2O4 + Zn(OH)2
It is used as such in some industrial dyeing processes to eliminate excess dye, residual oxide, and unintended pigments and for bleaching wood pulp.
In Negative film processing, silver halide grains are associated with couplers which, on development, produce metallic silver and a coloured image. The silver is 'bleached' to a soluble form in a solution of ferric EDTA, which is then dissolved in 'fix', a solution of sodium or ammonium thiosulfate. The procedure is the same for paper processing except that the EDTA and thiosulfate are mixed in 'bleachfix'.
In Reversal processing, residual silver in the emulsion after the first development is reduced to a soluble silver salt using a chemical bleach, most commonly EDTA. A conventional fixer then dissolves the reduced silver but leaves the unexposed silver halide intact. This unexposed halide is then exposed to light or chemically treated so that a second development produces a positive image. In colour and chromogenic film, this also generates a dye image in proportion to the silver.
Photographic bleaches are also used in black-and-white photography to selectively reduce silver to reduce silver density in negatives or prints. In such cases, the bleach composition is typically an acid solution of potassium dichromate.
A Risk Assessment Report (RAR) conducted by the European Union on sodium hypochlorite conducted under Regulation EEC 793/93 concluded that this substance is safe for the environment in all its current, normal uses.[26] This is due to its high reactivity and instability. The disappearance of hypochlorite is practically immediate in the natural aquatic environment, reaching in a short time concentration as low as 10−22 μg/L or less in all emission scenarios. In addition, it was found that while volatile chlorine species may be relevant in some indoor scenarios, they have a negligible impact in open environmental conditions. Further, the role of hypochlorite pollution is assumed as negligible in soils.
Industrial bleaching agents can be sources of concern. For example, the use of elemental chlorine in the bleaching of wood pulp produces organochlorines and persistent organic pollutants, including dioxins. According to an industry group, the use of chlorine dioxide in these processes has reduced the dioxin generation to under-detectable levels.[27] However, the respiratory risk from chlorine and highly toxic chlorinated byproducts still exists.
A European study conducted in 2008 indicated that sodium hypochlorite and organic chemicals (e.g., surfactants, fragrances) contained in several household cleaning products can react to generate chlorinated volatile organic compounds (VOCs).[28] These chlorinated compounds are emitted during cleaning applications, some of which are toxic and probable human carcinogens. The study showed that indoor air concentrations significantly increase (8–52 times for chloroform and 1–1170 times for carbon tetrachloride, respectively, above baseline quantities in the household) during the use of bleach-containing products. The increase in chlorinated volatile organic compound concentrations was the lowest for plain bleach and the highest for the products in the form of "thick liquid and gel".
The significant increases observed in indoor air concentrations of several chlorinated VOCs (especially carbon tetrachloride and chloroform) indicate that bleach use may be a source that could be important in terms of inhalation exposure to these compounds. While the authors suggested that using these cleaning products may significantly increase the cancer risk,[28][29] this conclusion appears to be hypothetical:
The highest level cited for a concentration of carbon tetrachloride (seemingly of highest concern) is 459 micrograms per cubic meter, translating to 0.073 ppm (part per million), or 73 ppb (part per billion). The OSHA-allowable time-weighted average concentration over eight hours is 10 ppm,[30] almost 140 times higher;
The OSHA highest allowable peak concentration (5-minute exposure for five minutes in 4 hours) is 200 ppm,[30] twice as high as the reported highest peak level (from the headspace of a bottle of a sample of bleach plus detergent).
Sodium hypochlorite solution, 3–6%, (common household bleach) is typically diluted for safe use when disinfecting surfaces and when used to treat drinking water.[31][32]
A weak solution of 2% household bleach in warm water is typical for sanitizing smooth surfaces before the brewing of beer or wine.[citation needed]
US government regulations (21 CFR 178 Subpart C) allow food processing equipment and food contact surfaces to be sanitized with solutions containing bleach, provided that the solution is allowed to drain adequately before contact with food and that the solutions do not exceed 200 parts per million (ppm) available chlorine (for example, one tablespoon of typical household bleach containing 5.25% sodium hypochlorite, per gallon of water).
A 1-in-47 dilution of household bleach with water (1 part bleach to 47 parts water: e.g. one teaspoon of bleach in a cup of water, or 21 ml per litre, or 1/3 cup of bleach in a gallon of water) is effective against many bacteria and some viruses in homes.[33] Even "scientific-grade", commercially produced disinfection solutions such as Virocidin-X usually have sodium hypochlorite as their sole active ingredient, though they also contain surfactants (to prevent beading) and fragrances (to conceal the bleach smell).[34]
See hypochlorous acid for a discussion of the mechanism for disinfectant action.
An oral rinse with a 0.05% dilute solution of household bleach is shown to treat gingivitis.[35]
Colour-safe bleach is a chemical that uses hydrogen peroxide as the active ingredient (for stain removal) rather than sodium hypochlorite or chlorine.[36] It also has chemicals in it that help brighten colours.[37] Though hydrogen peroxide is used for sterilization purposes and water treatment, its ability to disinfect laundry is limited because the concentration of hydrogen peroxide in laundry products is lower than what is used in other applications.[37]
The safety of bleaches depends on the compounds present, and their concentration.[38] Generally speaking, the ingestion of bleaches will cause damage to the esophagus and stomach, possibly leading to death. On contact with the skin or eyes, it causes irritation, drying, and potentially burns. Inhalation of bleach fumes can cause mild irritation of the upper airways..[38]Personal protective equipment should always be used when using bleach.
Bleach should never be mixed with vinegar or other acids, as this will create highly toxic chlorine gas, which can cause severe burns internally and externally.[39][40][41][42] Mixing bleach with ammonia similarly produces toxic chloramine gas, which can burn the lungs.[39][40][42] Mixing bleach with rubbing alcohol makes highly toxic chloroform,[43] while mixing with hydrogen peroxide results in an exothermic and potentially explosive chemical reaction that releases oxygen.[44]
Miracle Mineral Supplement (MMS), also promoted as "Master Mineral Solution" or "Chlorine Dioxide Solution" or CDS,[45] to evade restrictions by online retail platforms, is a bleach solution that has been fraudulently promoted as a cure-all since 2006.[46] Its main active ingredient is sodium chlorite, which is "activated" with citric acid to form chlorine dioxide. In an attempt to evade health regulations, its inventor Jim Humble, a former Scientologist, founded the Genesis II Church of Health and Healing, which considers MMS as its sacrament.[47][48]
During the COVID-19 pandemic, advocates of MMS including QAnon proponent Jordan Sather and Mark Grenon, who are affiliated with the Genesis II Church, began to suggest this would treat COVID-19.[49][50] Several news outlets, including The New York Times and The Washington Post, portrayed U.S. president Donald Trump's remarks in a 23 April 2020 briefing as promoting the injection of bleach as a potential COVID-19 treatment.[51][52][53] According to fact-checkers, many such reports were false and misleading, as they lacked needed context—including the fact that, at the same briefing, Trump specifically clarified that any such treatments "wouldn't be through injections, we're talking about almost a cleaning and sterilization of an area. Maybe it works, maybe it doesn't work, but it certainly has a big effect if it's on a stationary object.".[54][55] Nevertheless, the widespread reporting led the CDC, scientists, and bleach companies to re-state that bleach is harmful to humans and should not be ingested or injected.[56][53] MSN News quoted Professor Rob Chilcott, a
