1.
Medina of Tunis
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The medina of Tunis is the medina quarter of Tunis, capital of Tunisia. It has been a UNESCO World Heritage Site since 1979, the Medina contains some 700 monuments, including palaces, mosques, mausoleums, madrasas and fountains dating from the Almohad and the Hafsid periods. Founded in 698 around the core of the Zitouna Mosque. Expansions to the north and south divided the main Medina into two north and south. The opening toward the sky as a symbol, climatic effect. With an area of 270 hectares and over 100,000 inhabitants, the Medina has one-tenth of the population of Tunis, the planning of the Medina of Tunis has the distinction of not obeying geometrical layouts nor formal compositions. The complex organization of the urban fabrics has fueled an entire colonial literature where the dangerous Medina, many publications have detailed the development of the Medina model and system of prioritization of public and private spaces, residential and commercial, sacred and profane. We can raise the axes north-south and East-West comparable to a Roman cardo and decumanus that intersect at the court of Zitouna mosque, house of prayer and we distinguish the main streets, the secondary streets and the deadlocks sometimes entire private spots reserved for women. The built environment is characterized by the juxtaposition of large plots. This idea is reinforced by the area of a shop and bedroom, in the case of domestic architecture, the most they set back from the shops, the more they value. The concept of withdrawal and privacy is paramount, the late introduction of the sewer system induces a flow of waste water through the streets of the Medina. Houses and noble places are located before or in the high district. The terraces of the Medina are also an important place of social life, the rituals and dating schedules provide an informal mix. Nowadays, every district retains its culture and rivalries can be strong, thus, the northern suburb supports the football club Espérance Sportive de Tunis while the southern side is the district of the rival Club Africain. Association pour la de la medina de Tunis UNESCO site on the Tunis Medina
2.
Art
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In their most general form these activities include the production of works of art, the criticism of art, the study of the history of art, and the aesthetic dissemination of art. The oldest documented forms of art are visual arts, which include creation of images or objects in fields including painting, sculpture, printmaking, photography, and other visual media. Music, theatre, film, dance, and other performing arts, as well as literature, until the 17th century, art referred to any skill or mastery and was not differentiated from crafts or sciences. Art may be characterized in terms of mimesis, expression, communication of emotion, during the Romantic period, art came to be seen as a special faculty of the human mind to be classified with religion and science. Though the definition of what art is disputed and has changed over time, general descriptions mention an idea of imaginative or technical skill stemming from human agency. The nature of art, and related such as creativity. One early sense of the definition of art is related to the older Latin meaning. English words derived from this meaning include artifact, artificial, artifice, medical arts, however, there are many other colloquial uses of the word, all with some relation to its etymology. Several dialogues in Plato tackle questions about art, Socrates says that poetry is inspired by the muses, and is not rational. He speaks approvingly of this, and other forms of divine madness in the Phaedrus, and yet in the Republic wants to outlaw Homers great poetic art, in Ion, Socrates gives no hint of the disapproval of Homer that he expresses in the Republic. For example, music imitates with the media of rhythm and harmony, whereas dance imitates with rhythm alone, the forms also differ in their object of imitation. Comedy, for instance, is an imitation of men worse than average. Lastly, the forms differ in their manner of imitation—through narrative or character, through change or no change, Aristotle believed that imitation is natural to mankind and constitutes one of mankinds advantages over animals. The second, and more recent, sense of the art as an abbreviation for creative art or fine art emerged in the early 17th century. The creative arts are a collection of disciplines which produce artworks that are compelled by a drive and convey a message, mood. Art is something that stimulates an individuals thoughts, emotions, beliefs, works of art can be explicitly made for this purpose or interpreted on the basis of images or objects. Often, if the skill is being used in a common or practical way, likewise, if the skill is being used in a commercial or industrial way, it may be considered commercial art instead of fine art. On the other hand, crafts and design are considered applied art
3.
Recursion
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Recursion occurs when a thing is defined in terms of itself or of its type. Recursion is used in a variety of disciplines ranging from linguistics to logic, the most common application of recursion is in mathematics and computer science, where a function being defined is applied within its own definition. While this apparently defines a number of instances, it is often done in such a way that no loop or infinite chain of references can occur. The ancestors of ones ancestors are also ones ancestors, the Fibonacci sequence is a classic example of recursion, Fib =0 as base case 1, Fib =1 as base case 2, For all integers n >1, Fib, = Fib + Fib. Many mathematical axioms are based upon recursive rules, for example, the formal definition of the natural numbers by the Peano axioms can be described as,0 is a natural number, and each natural number has a successor, which is also a natural number. By this base case and recursive rule, one can generate the set of all natural numbers, recursively defined mathematical objects include functions, sets, and especially fractals. There are various more tongue-in-cheek definitions of recursion, see recursive humor, Recursion is the process a procedure goes through when one of the steps of the procedure involves invoking the procedure itself. A procedure that goes through recursion is said to be recursive, to understand recursion, one must recognize the distinction between a procedure and the running of a procedure. A procedure is a set of steps based on a set of rules, the running of a procedure involves actually following the rules and performing the steps. An analogy, a procedure is like a recipe, running a procedure is like actually preparing the meal. Recursion is related to, but not the same as, a reference within the specification of a procedure to the execution of some other procedure. For instance, a recipe might refer to cooking vegetables, which is another procedure that in turn requires heating water, for this reason recursive definitions are very rare in everyday situations. An example could be the procedure to find a way through a maze. Proceed forward until reaching either an exit or a branching point, If the point reached is an exit, terminate. Otherwise try each branch in turn, using the procedure recursively, if every trial fails by reaching only dead ends, return on the path led to this branching point. Whether this actually defines a terminating procedure depends on the nature of the maze, in any case, executing the procedure requires carefully recording all currently explored branching points, and which of their branches have already been exhaustively tried. This can be understood in terms of a definition of a syntactic category. A sentence can have a structure in which what follows the verb is another sentence, Dorothy thinks witches are dangerous, so a sentence can be defined recursively as something with a structure that includes a noun phrase, a verb, and optionally another sentence
4.
Giotto
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Giotto di Bondone, known mononymously as Giotto and Latinized as Giottus, was an Italian painter and architect from Florence in the late Middle Ages. He is generally considered the first in a line of artists who contributed to the Renaissance. Giottos masterwork is the decoration of the Scrovegni Chapel in Padua, also known as the Arena Chapel and this fresco cycle depicts the Life of the Virgin and the Life of Christ. It is regarded as one of the masterpieces of the Early Renaissance. That Giotto painted the Arena Chapel and that he was chosen by the Commune of Florence in 1334 to design the new campanile of Florences Cathedral are among the few certainties of his biography. Tradition holds that Giotto was born in a farmhouse, perhaps at Colle di Romagnano or Romignano, since 1850, a tower house in nearby Colle Vespignano has borne a plaque claiming the honor of his birthplace, an assertion commercially publicized. However, recent research has suggested that he was born in Florence. His fathers name was Bondone, and he is described in surviving records as a person of good standing. Most authors accept that Giotto was his name, but it is likely to have been an abbreviation of Ambrogio or Angelo. The year of his birth is calculated from the fact that Antonio Pucci, however, the word seventy fits into the rhyme of the poem better than would have a longer and more complex age, so it is possible that Pucci used artistic license. In his Lives, Giorgio Vasari states that Giotto was a shepherd boy, the great Florentine painter Cimabue discovered Giotto drawing pictures of his sheep on a rock. They were so lifelike that Cimabue approached Giotto and asked if he could take him on as an apprentice, Cimabue was one of the two most highly renowned painters of Tuscany, the other being Duccio, who worked mainly in Siena. Vasari recounts a number of stories about Giottos skill as a young artist. He tells of one occasion when Cimabue was absent from the workshop, later when Cimabue returned, he tried in vain several times to brush the fly off. The messenger departed ill pleased, not doubting that he had made a fool of. The messenger brought other artists drawings back to the Pope in addition to Giottos, many scholars today are uncertain about Giottos training, and consider Vasaris account that he was Cimabues pupil as legend, citing earlier sources which suggest that Giotto was not Cimabues pupil. About 1290, Giotto married Ciuta, the daughter of Lapo del Pela of Florence, the marriage produced four daughters and four sons, one of whom became a painter. By 1301, Giotto owned a house in Florence, and when he was not traveling he would return there and live in comfort with his family
5.
Mathematics and art
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Mathematics and art are related in a variety of ways. Mathematics has itself been described as an art motivated by beauty, Mathematics can be discerned in arts such as music, dance, painting, architecture, sculpture, and textiles. This article focuses, however, on mathematics in the visual arts, Mathematics and art have a long historical relationship. Artists have used mathematics since the 5th century BC when the Greek sculptor Polykleitos wrote his Canon, prescribing proportions based on the ratio 1, persistent popular claims have been made for the use of the golden ratio in ancient art and architecture, without reliable evidence. In the Italian Renaissance, Luca Pacioli wrote the influential treatise De Divina Proportione, illustrated with woodcuts by Leonardo da Vinci, another Italian painter, Piero della Francesca, developed Euclids ideas on perspective in treatises such as De Prospectiva Pingendi, and in his paintings. The engraver Albrecht Dürer made many references to mathematics in his work Melencolia I, in modern times, the graphic artist M. C. Mathematics has inspired textile arts such as quilting, knitting, cross-stitch, crochet, embroidery, weaving, Turkish and other carpet-making, as well as kilim. In Islamic art, symmetries are evident in forms as varied as Persian girih and Moroccan zellige tilework, Mughal jaali pierced stone screens, and widespread muqarnas vaulting. Mathematics has directly influenced art with conceptual tools such as perspective, the analysis of symmetry, and mathematical objects such as polyhedra. Magnus Wenninger creates colourful stellated polyhedra, originally as models for teaching, mathematical concepts such as recursion and logical paradox can be seen in paintings by Rene Magritte and in engravings by M. C. Computer art often makes use of including the Mandelbrot set. Polykleitos the elder was a Greek sculptor from the school of Argos, and his works and statues consisted mainly of bronze and were of athletes. While his sculptures may not be as famous as those of Phidias, Polykleitos uses the distal phalanx of the little finger as the basic module for determining the proportions of the human body. Next, he takes the length and multiplies that by √2 to get the length of the palm from the base of the finger to the ulna. This geometric series of measurements progresses until Polykleitos has formed the arm, chest, body, the influence of the Canon of Polykleitos is immense in Classical Greek, Roman, and Renaissance sculpture, many sculptors following Polykleitoss prescription. While none of Polykleitoss original works survive, Roman copies demonstrate his ideal of physical perfection, some scholars argue that Pythagorean thought influenced the Canon of Polykleitos. In classical times, rather than making distant figures smaller with linear perspective, painters sized objects, in the Middle Ages, some artists used reverse perspective for special emphasis. The Muslim mathematician Alhazen described a theory of optics in his Book of Optics in 1021, the Renaissance saw a rebirth of Classical Greek and Roman culture and ideas, among them the study of mathematics to understand nature and the arts
6.
Netherlands
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The Netherlands, also informally known as Holland is the main constituent country of the Kingdom of the Netherlands. It is a densely populated country located in Western Europe with three territories in the Caribbean. The European part of the Netherlands borders Germany to the east, Belgium to the south, and the North Sea to the northwest, sharing borders with Belgium, the United Kingdom. The three largest cities in the Netherlands are Amsterdam, Rotterdam and The Hague, Amsterdam is the countrys capital, while The Hague holds the Dutch seat of parliament and government. The port of Rotterdam is the worlds largest port outside East-Asia, the name Holland is used informally to refer to the whole of the country of the Netherlands. Netherlands literally means lower countries, influenced by its low land and flat geography, most of the areas below sea level are artificial. Since the late 16th century, large areas have been reclaimed from the sea and lakes, with a population density of 412 people per km2 –507 if water is excluded – the Netherlands is classified as a very densely populated country. Only Bangladesh, South Korea, and Taiwan have both a population and higher population density. Nevertheless, the Netherlands is the worlds second-largest exporter of food and agricultural products and this is partly due to the fertility of the soil and the mild climate. In 2001, it became the worlds first country to legalise same-sex marriage, the Netherlands is a founding member of the EU, Eurozone, G-10, NATO, OECD and WTO, as well as being a part of the Schengen Area and the trilateral Benelux Union. The first four are situated in The Hague, as is the EUs criminal intelligence agency Europol and this has led to the city being dubbed the worlds legal capital. The country also ranks second highest in the worlds 2016 Press Freedom Index, the Netherlands has a market-based mixed economy, ranking 17th of 177 countries according to the Index of Economic Freedom. It had the thirteenth-highest per capita income in the world in 2013 according to the International Monetary Fund, in 2013, the United Nations World Happiness Report ranked the Netherlands as the seventh-happiest country in the world, reflecting its high quality of life. The Netherlands also ranks joint second highest in the Inequality-adjusted Human Development Index, the region called Low Countries and the country of the Netherlands have the same toponymy. Place names with Neder, Nieder, Nether and Nedre and Bas or Inferior are in use in all over Europe. They are sometimes used in a relation to a higher ground that consecutively is indicated as Upper, Boven, Oben. In the case of the Low Countries / the Netherlands the geographical location of the region has been more or less downstream. The geographical location of the region, however, changed over time tremendously
7.
Nursing
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Nursing is a profession within the health care sector focused on the care of individuals, families, and communities so they may attain, maintain, or recover optimal health and quality of life. Nurses may be differentiated from other health care providers by their approach to patient care, training, Nurses practice in many specialisms with differing levels of prescriber authority. Many nurses provide care within the scope of physicians. However, nurses are permitted by most jurisdictions to practice independently in a variety of settings depending on training level, Nurses may help coordinate the patient care performed by other members of an interdisciplinary health care team such as therapists, medical practitioners and dietitians. Nurses provide care both interdependently, for example, with physicians, and independently as nursing professionals, Nursing historians face the challenge of determining whether care provided to the sick or injured in antiquity was nursing care. In the fifth century BC, for example, the Hippocratic Collection in places describes skilled care and observation of patients by male attendants, who may have been early nurses. Hence, any one desirous of acquiring a knowledge of anatomy should prepare a dead body and carefully, observe, by dissecting it. Before the foundation of modern nursing, members of religious orders such as nuns, examples exist in Christian, Islamic and Buddhist traditions amongst others. Phoebe, mentioned in Romans 16 has been described in sources as the first visiting nurse. These traditions were influential in the development of the ethos of modern nursing, the religious roots of modern nursing remain in evidence today in many countries. One example in the United Kingdom is the use of the sister to refer to a senior nurse. During the Reformation of the 16th century, Protestant reformers shut down the monasteries and convents and those nuns who had been serving as nurses were given pensions or told to get married and stay home. Nursing care went to the inexperienced as traditional caretakers, rooted in the Roman Catholic Church, were removed from their positions, the nursing profession suffered a major setback for approximately 200 years. Florence Nightingale laid the foundations of professional nursing during the Crimean War and her Notes on Nursing became popular. Agnes Jones, who established a training regime at the Brownlow Hill infirmary, Liverpool. In turn, the modern movement began in Germany in 1836. Within a half century, there were over 5,000 deaconesses in Europe, formal use of nurses in the modern military began in the latter half of the nineteenth century. Nurses saw active duty in the First Boer War, the Egyptian Campaign, hospital-based training came to the fore in the early 1900s, with an emphasis on practical experience
8.
Fractal
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A fractal is a mathematical set that exhibits a repeating pattern displayed at every scale. It is also known as expanding symmetry or evolving symmetry, if the replication is exactly the same at every scale, it is called a self-similar pattern. An example of this is the Menger Sponge, Fractals can also be nearly the same at different levels. This latter pattern is illustrated in small magnifications of the Mandelbrot set, Fractals also include the idea of a detailed pattern that repeats itself. Fractals are different from other geometric figures because of the way in which they scale, doubling the edge lengths of a polygon multiplies its area by four, which is two raised to the power of two. Likewise, if the radius of a sphere is doubled, its volume scales by eight, but if a fractals one-dimensional lengths are all doubled, the spatial content of the fractal scales by a power that is not necessarily an integer. This power is called the dimension of the fractal. As mathematical equations, fractals are usually nowhere differentiable, the term fractal was first used by mathematician Benoît Mandelbrot in 1975. Mandelbrot based it on the Latin frāctus meaning broken or fractured, there is some disagreement amongst authorities about how the concept of a fractal should be formally defined. Mandelbrot himself summarized it as beautiful, damn hard, increasingly useful, Fractals are not limited to geometric patterns, but can also describe processes in time. Fractal patterns with various degrees of self-similarity have been rendered or studied in images, structures and sounds and found in nature, technology, art, Fractals are of particular relevance in the field of chaos theory, since the graphs of most chaotic processes are fractal. The word fractal often has different connotations for laypeople than for mathematicians, the mathematical concept is difficult to define formally even for mathematicians, but key features can be understood with little mathematical background. If this is done on fractals, however, no new detail appears, nothing changes, self-similarity itself is not necessarily counter-intuitive. The difference for fractals is that the pattern reproduced must be detailed, a regular line, for instance, is conventionally understood to be 1-dimensional, if such a curve is divided into pieces each 1/3 the length of the original, there are always 3 equal pieces. In contrast, consider the Koch snowflake and it is also 1-dimensional for the same reason as the ordinary line, but it has, in addition, a fractal dimension greater than 1 because of how its detail can be measured. This also leads to understanding a third feature, that fractals as mathematical equations are nowhere differentiable, in a concrete sense, this means fractals cannot be measured in traditional ways. The history of fractals traces a path from chiefly theoretical studies to modern applications in computer graphics, according to Pickover, the mathematics behind fractals began to take shape in the 17th century when the mathematician and philosopher Gottfried Leibniz pondered recursive self-similarity. In his writings, Leibniz used the term fractional exponents, also in the last part of that century, Felix Klein and Henri Poincaré introduced a category of fractal that has come to be called self-inverse fractals
9.
Image resolution
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Image resolution is the detail an image holds. The term applies to digital images, film images. Higher resolution means more image detail, image resolution can be measured in various ways. Resolution quantifies how close lines can be to other and still be visibly resolved. Resolution units can be tied to physical sizes, to the size of a picture. Line pairs are used instead of lines, a line pair comprises a dark line. A line is either a line or a light line. A resolution of 10 lines per millimeter means 5 dark lines alternating with 5 light lines, photographic lens and film resolution are most often quoted in line pairs per millimeter. The resolution of digital cameras can be described in different ways. Resolution is the capability of the sensor to observe or measure the smallest object clearly with distinct boundaries, there is a difference between the resolution and a pixel. A pixel is actually a unit of the digital Resolution depends upon the size of the pixel, usually, with any given lens setting, the smaller the size of the pixel, the higher the resolution will be and the clearer the object in the image will be. Images having smaller pixel sizes might consist of more pixels, the number of pixels correlates to the amount of information within the image. An image of N pixels height by M pixels wide can have any less than N lines per picture height. Other conventions include describing pixels per unit or pixels per area unit. None of these pixel resolutions are true resolutions, but they are referred to as such. Below is an illustration of how the image might appear at different pixel resolutions. An image that is 2048 pixels in width and 1536 pixels in height has a total of 2048×1536 =3,145,728 pixels or 3.1 megapixels, one could refer to it as 2048 by 1536 or a 3. 1-megapixel image. Or, you can think of it as a low quality image if printed at about 28.5 inches wide
10.
Saint Peter
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Saint Peter, also known as Simon Peter, Simeon, or Simōn pronunciation, according to the New Testament, was one of the Twelve Apostles of Jesus Christ, leaders of the early Christian Great Church. Hippolytus of Rome, a 3rd-century theologian, gave him the title of Apostle of the Apostles, according to Catholic teaching, Peter was ordained by Jesus in the Rock of My Church dialogue in Matthew 16,18. He is traditionally counted as the first Bishop of Rome and by Eastern Christian tradition also as the first Patriarch of Antioch. The ancient Christian churches all venerate Peter as a saint and as founder of the Church of Antioch. The New Testament indicates that Peter was the son of John and was from the village of Bethsaida in the province of Galilee or Gaulanitis and his brother Andrew was also an apostle. According to New Testament accounts, Peter was one of twelve apostles chosen by Jesus from his first disciples, originally a fisherman, he played a leadership role and was with Jesus during events witnessed by only a few apostles, such as the Transfiguration. According to the gospels, Peter confessed Jesus as the Messiah, was part of Jesuss inner circle, thrice denied Jesus and wept bitterly once he realised his deed, according to Christian tradition, Peter was crucified in Rome under Emperor Nero Augustus Caesar. It is traditionally held that he was crucified upside down at his own request, Tradition holds that he was crucified at the site of the Clementine Chapel. His remains are said to be contained in the underground Confessio of St. Peters Basilica. According to Catholic doctrine, the direct successor to Saint Peter is the incumbent pope. Two general epistles in the New Testament are ascribed to Peter, the Gospel of Mark was traditionally thought to show the influence of Peters preaching and eyewitness memories. Peters original name was Shimon or Simeon and he was later given the name Peter, New Testament Greek Πέτρος derived from πέτρα, which means rock. In the Latin translation of the Bible this became Petrus, a form of the feminine petra. Another version of this name is Aramaic, , after his name in Hellenised Aramaic. The English, Dutch and German Peter, French Pierre, the Italian Pietro, the Spanish and Portuguese Pedro, the Syriac or Aramaic word for rock is kepa, which in Greek became Πέτρος, also meaning rock. He is also known as Simon Peter, Cephas and Kepha, both Cephas and Kepha also mean rock. In the New Testament, he is among the first of the disciples called during Jesus ministry, Peter became the first listed apostle ordained by Jesus in the early church. Peter was a fisherman in Bethsaida and he was named Simon, son of Jonah or John
11.
M. C. Escher
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Maurits Cornelis Escher, or commonly M. C. Escher, was a Dutch graphic artist who made mathematically inspired woodcuts, lithographs, early in his career, he drew inspiration from nature, making studies of insects, landscapes, and plants such as lichens, all of which he used as details in his artworks. Apart from being used in a variety of papers, his work has appeared on the covers of many books. He was one of the inspirations of Douglas Hofstadters 1979 book Gödel, Escher. Maurits Cornelis Escher was born on 17 June 1898 in Leeuwarden, Friesland and he was the youngest son of the civil engineer George Arnold Escher and his second wife, Sara Gleichman. In 1903, the moved to Arnhem, where he attended primary and secondary school until 1918. Known to his friends and family as Mauk, he was a sickly child, although he excelled at drawing, his grades were generally poor. He also took carpentry and piano lessons until he was thirteen years old, in 1918, he went to the Technical College of Delft. From 1919 to 1922, Escher attended the Haarlem School of Architecture and Decorative Arts, learning drawing and he briefly studied architecture, but he failed a number of subjects and switched to decorative arts, studying under the graphic artist Samuel Jessurun de Mesquita. In 1922, an important year of his life, Escher traveled through Italy, visiting Florence, San Gimignano, Volterra, Siena, in the same year he traveled through Spain, visiting Madrid, Toledo, and Granada. He was impressed by the Italian countryside, and in Granada by the Moorish architecture of the fourteenth-century Alhambra, Escher returned to Italy, and lived in Rome from 1923 to 1935. While in Italy, Escher met Jetta Umiker – a Swiss woman, the couple settled in Rome where their first son, Giorgio Arnaldo Escher, named after his grandfather, was born. Escher and Jetta later had two sons, Arthur and Jan. He travelled frequently, visiting Viterbo in 1926, the Abruzzi in 1927 and 1929, Corsica in 1928 and 1933, Calabria in 1930, the townscapes and landscapes of these places feature prominently in his artworks. In May and June 1936, Escher travelled back to Spain, revisiting the Alhambra, the sketches he made in the Alhambra formed a major source for his work from that time on. He also studied the architecture of the Mezquita, the Moorish mosque of Cordoba and this turned out to be the last of his long study journeys, after 1937, his artworks were created in his studio rather than in the field. All the same, even his work already shows his interest in the nature of space, the unusual, perspective. In 1935, the climate in Italy became unacceptable to Escher
12.
Photo manipulation
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Photo manipulation involves transforming or altering a photograph using various methods and techniques to achieve desired results. For example, Ansel Adams employed some of the common manipulations using darkroom exposure techniques. There are a number of applications available for digital image manipulation. Photo manipulation dates back to some of the earliest photographs captured on glass, the practice began not long after the creation of the first photograph by Joseph Nicéphore Niépce who developed heliography and made the first photographic print from a photoengraved printing plate. Negatives can be manipulated while still in the camera using double-exposure techniques, in the early 19th century, photography and the technology that made it possible was rather crude and cumbersome. While the equipment and technology progressed over time, it wasnt until the late 20th Century that photography evolved into the digital realm. At the onset, digital photography was considered by some to be a new approach. Close observation of the photograph raises questions and brings to light certain details in the photograph that simply do not add up, Photo manipulation has been used to deceive or persuade viewers or improve storytelling and self-expression. Often even subtle and discreet changes can have a impact on how we interpret or judge a photograph. As early as the American Civil War, photographs were published as engravings based on more than one negative, Joseph Stalin made use of photo retouching for propaganda purposes. On May 5,1920 his predecessor Vladimir Lenin held a speech for Soviet troops that Leon Trotsky attended, Stalin had Trotsky retouched out of a photograph showing Trotsky in attendance. In a well known case of damnatio memoriae image manipulation, NKVD leader Nikolai Yezhov, in the 1930s, artist John Heartfield used a type of photo manipulation known as the photomontage to critique Nazi propaganda. Some ethical theories have been applied to image manipulation, during a panel on the topic of ethics in image manipulation Aude Oliva theorized that categorical shifts are necessary in order for an edited image to be viewed as a manipulation. In Image Act Theory, Carson Reynolds extended speech act theory by applying it to photo editing, in How to Do Things with Pictures, William Mitchell details the long history of photo manipulation and discusses it critically. A notable incident of controversial photo manipulation occurred over a photograph that was altered to fit the vertical orientation of a 1982 National Geographic magazine cover, the altered image made two Egyptian pyramids appear closer together than they actually were in the original photograph. The incident triggered a debate about the appropriateness of falsifying an image and we regarded that afterwards as a mistake, and we wouldn’t repeat that mistake today. There are other incidents of questionable photo manipulation in journalism, one such incident arose in early 2005 after Martha Stewart was released from prison. Newsweek used a photograph of Stewarts face on the body of a much slimmer woman for their cover, staley also explained that Newsweek disclosed on page 3 that the cover image of Martha Stewart was a composite
