Guatemala the Republic of Guatemala, is a country in Central America bordered by Mexico to the north and west and the Caribbean to the northeast, Honduras to the east, El Salvador to the southeast and the Pacific Ocean to the south. With an estimated population of around 16.6 million, it is the most populated country in Central America. Guatemala is a representative democracy; the territory of modern Guatemala once formed the core of the Maya civilization, which extended across Mesoamerica. Most of the country was conquered by the Spanish in the 16th century, becoming part of the viceroyalty of New Spain. Guatemala attained independence in 1821 as part of the Federal Republic of Central America, which dissolved by 1841. From the mid to late 19th century, Guatemala experienced civil strife. Beginning in the early 20th century, it was ruled by a series of dictators backed by the United Fruit Company and the United States government. In 1944, authoritarian leader Jorge Ubico was overthrown by a pro-democratic military coup, initiating a decade-long revolution that led to sweeping social and economic reforms.
A U. S.-backed military coup in 1954 installed a dictatorship. From 1960 to 1996, Guatemala endured a bloody civil war fought between the US-backed government and leftist rebels, including genocidal massacres of the Maya population perpetrated by the military. Since a United Nations-negotiated peace accord, Guatemala has witnessed both economic growth and successful democratic elections, though it continues to struggle with high rates of poverty, drug trade, instability; as of 2014, Guatemala ranks 31st of 33 Latin American and Caribbean countries in terms of the Human Development Index. Guatemala's abundance of biologically significant and unique ecosystems includes a large number of endemic species and contributes to Mesoamerica's designation as a biodiversity hotspot; the name "Guatemala" comes from the Nahuatl word Cuauhtēmallān, or "place of many trees", a derivative of the K'iche' Mayan word for "many trees" or more for the Cuate/Cuatli tree Eysenhardtia. This was the name the Tlaxcaltecan soldiers who accompanied Pedro de Alvarado during the Spanish Conquest gave to this territory.
The first evidence of human habitation in Guatemala dates back to 12,000 BC. Evidence, such as obsidian arrowheads found in various parts of the country, suggests a human presence as early as 18,000 BC. There is archaeological proof. Pollen samples from Petén and the Pacific coast indicate that maize cultivation had developed by 3500 BC. Sites dating back to 6500 BC have been found in the Quiché region in the Highlands, Sipacate and Escuintla on the central Pacific coast. Archaeologists divide the pre-Columbian history of Mesoamerica into the Preclassic period, the Classic period, the Postclassic period; until the Preclassic was regarded as a formative period, with small villages of farmers who lived in huts, few permanent buildings. However, this notion has been challenged by recent discoveries of monumental architecture from that period, such as an altar in La Blanca, San Marcos, from 1000 BC; the Classic period of Mesoamerican civilization corresponds to the height of the Maya civilization, is represented by countless sites throughout Guatemala, although the largest concentration is in Petén.
This period is characterized by urbanisation, the emergence of independent city-states, contact with other Mesoamerican cultures. This lasted until 900 AD, when the Classic Maya civilization collapsed; the Maya abandoned many of the cities of the central lowlands or were killed off by a drought-induced famine. The cause of the collapse is debated, but the drought theory is gaining currency, supported by evidence such as lakebeds, ancient pollen, others. A series of prolonged droughts, among other reasons such as overpopulation, in what is otherwise a seasonal desert is thought to have decimated the Maya, who relied on regular rainfall; the Post-Classic period is represented by regional kingdoms, such as the Itza, Kowoj and Kejache in Petén, the Mam, Ki'che', Chajoma, Tz'utujil, Poqomchi', Q'eqchi' and Ch'orti' in the highlands. Their cities preserved many aspects of Maya culture; the Maya civilization shares many features with other Mesoamerican civilizations due to the high degree of interaction and cultural diffusion that characterized the region.
Advances such as writing and the calendar did not originate with the Maya. Maya influence can be detected from Honduras, Northern El Salvador to as far north as central Mexico, more than 1,000 km from the Maya area. Many outside influences are found in Maya art and architecture, which are thought to be the result of trade and cultural exchange rather than direct external conquest. After they arrived in the New World, the Spanish started several expeditions to Guatemala, beginning in 1519. Before long, Spanish contact resulted in an epidemic. Hernán Cortés, who had led the Spanish conquest of Mexico, granted a permit to Captains Gonzalo de Alvarado and his brother, Pedro de Alvarado, to conquer this land. Alvarado at first allied himself with the Kaqchikel nation to fight against their traditional rivals the K'iche' nation
Brazil the Federative Republic of Brazil, is the largest country in both South America and Latin America. At 8.5 million square kilometers and with over 208 million people, Brazil is the world's fifth-largest country by area and the fifth most populous. Its capital is Brasília, its most populated city is São Paulo; the federation is composed of the union of the 26 states, the Federal District, the 5,570 municipalities. It is the largest country to have Portuguese as an official language and the only one in the Americas. Bounded by the Atlantic Ocean on the east, Brazil has a coastline of 7,491 kilometers, it borders all other South American countries except Ecuador and Chile and covers 47.3% of the continent's land area. Its Amazon River basin includes a vast tropical forest, home to diverse wildlife, a variety of ecological systems, extensive natural resources spanning numerous protected habitats; this unique environmental heritage makes Brazil one of 17 megadiverse countries, is the subject of significant global interest and debate regarding deforestation and environmental protection.
Brazil was inhabited by numerous tribal nations prior to the landing in 1500 of explorer Pedro Álvares Cabral, who claimed the area for the Portuguese Empire. Brazil remained a Portuguese colony until 1808, when the capital of the empire was transferred from Lisbon to Rio de Janeiro. In 1815, the colony was elevated to the rank of kingdom upon the formation of the United Kingdom of Portugal and the Algarves. Independence was achieved in 1822 with the creation of the Empire of Brazil, a unitary state governed under a constitutional monarchy and a parliamentary system; the ratification of the first constitution in 1824 led to the formation of a bicameral legislature, now called the National Congress. The country became a presidential republic in 1889 following a military coup d'état. An authoritarian military junta came to power in 1964 and ruled until 1985, after which civilian governance resumed. Brazil's current constitution, formulated in 1988, defines it as a democratic federal republic. Due to its rich culture and history, the country ranks thirteenth in the world by number of UNESCO World Heritage Sites.
Brazil is considered an advanced emerging economy. It has the ninth largest GDP in the world by nominal, eight and PPP measures, it is one of the world's major breadbaskets, being the largest producer of coffee for the last 150 years. It is classified as an upper-middle income economy by the World Bank and a newly industrialized country, with the largest share of global wealth in Latin America. Brazil is a regional power and sometimes considered a great or a middle power in international affairs. On account of its international recognition and influence, the country is subsequently classified as an emerging power and a potential superpower by several analysts. Brazil is a founding member of the United Nations, the G20, BRICS, Union of South American Nations, Organization of American States, Organization of Ibero-American States and the Community of Portuguese Language Countries, it is that the word "Brazil" comes from the Portuguese word for brazilwood, a tree that once grew plentifully along the Brazilian coast.
In Portuguese, brazilwood is called pau-brasil, with the word brasil given the etymology "red like an ember", formed from brasa and the suffix -il. As brazilwood produces a deep red dye, it was valued by the European textile industry and was the earliest commercially exploited product from Brazil. Throughout the 16th century, massive amounts of brazilwood were harvested by indigenous peoples along the Brazilian coast, who sold the timber to European traders in return for assorted European consumer goods; the official Portuguese name of the land, in original Portuguese records, was the "Land of the Holy Cross", but European sailors and merchants called it the "Land of Brazil" because of the brazilwood trade. The popular appellation eclipsed and supplanted the official Portuguese name; some early sailors called it the "Land of Parrots". In the Guarani language, an official language of Paraguay, Brazil is called "Pindorama"; this was the name the indigenous population gave to the region, meaning "land of the palm trees".
Some of the earliest human remains found in the Americas, Luzia Woman, were found in the area of Pedro Leopoldo, Minas Gerais and provide evidence of human habitation going back at least 11,000 years. The earliest pottery found in the Western Hemisphere was excavated in the Amazon basin of Brazil and radiocarbon dated to 8,000 years ago; the pottery was found near Santarém and provides evidence that the tropical forest region supported a complex prehistoric culture. The Marajoara culture flourished on Marajó in the Amazon delta from 800 CE to 1400 CE, developing sophisticated pottery, social stratification, large populations, mound building, complex social formations such as chiefdoms. Around the time of the Portuguese arrival, the territory of current day Brazil had an estimated indigenous population of 7 million people semi-nomadic who subsisted on hunting, fishing and migrant agriculture; the indigenous population of Brazil comprised several large indigenous ethnic groups. The Tupí people were subdivided into the Tupiniquins and Tupinambás, there were many subdivisions of the other gro
Oaxaca the Free and Sovereign State of Oaxaca, is one of the 31 states which, along with Mexico City, make up the 32 federative entities of Mexico. It is divided into 570 municipalities, of which 418 are governed by the system of usos y costumbres with recognized local forms of self-governance, its capital city is Oaxaca de Juárez. Oaxaca is located in Southeastern Mexico, it is bordered by the states of Guerrero to the west, Puebla to the northwest, Veracruz to the north, Chiapas to the east. To the south, Oaxaca has a significant coastline on the Pacific Ocean; the state is best known for its indigenous cultures. The most numerous and best known are the Zapotecs and the Mixtecs, but there are sixteen that are recognized; these cultures have survived better than most others in Mexico due to the state's rugged and isolating terrain. Most live in the Central Valleys region, an economically important area for tourism, with people attracted for its archeological sites such as Monte Albán, Mitla, its various native cultures and crafts.
Another important tourist area is the coast, which has the major resort of Huatulco and sandy beaches of Puerto Escondido, Puerto Ángel, Bahia de Tembo, Mazunte. Oaxaca is one of the most biologically diverse states in Mexico, ranking in the top three, along with Chiapas and Veracruz, for numbers of reptiles, amphibians and plants; the name of the state comes from the name of Oaxaca. This name comes from the Nahuatl word "Huaxyacac", which refers to a tree called a "guaje" found around the capital city; the name was applied to the Valley of Oaxaca by Nahuatl-speaking Aztecs and passed on to the Spanish during the conquest of the Oaxaca region. The modern state was created in 1824, the state seal was designed by Alfredo Canseco Feraud and approved by the government of Eduardo Vasconcelos. Nahuatl word "Huaxyacac" was transliterated as "Oaxaca" using Medieval Spanish orthography, in which the x represented the voiceless postalveolar fricative, making "Oaxaca" pronounced as. However, during the sixteenth century the voiceless fricative sound evolved into a voiceless velar fricative, Oaxaca began to be pronounced.
In present-day Spanish, Oaxaca is pronounced or, the latter pronunciation used in dialects of southern Mexico, the Caribbean, much of Central America, some places in South America, the Canary Islands and western Andalusia in Spain where has become a voiceless glottal fricative. Most of what is known about prehistoric Oaxaca comes from work in the Central Valleys region. Evidence of human habitation dating back to about 11,000 years BC has been found in the Guilá Naquitz cave near the town of Mitla; this area was recognized as a UNESCO World Heritage site in 2010 in recognition for the "earliest known evidence of domesticated plants in the continent, while corn cob fragments from the same cave are said to be the earliest documented evidence for the domestication of maize." More finds of nomadic peoples date back to about 5000 BC, with some evidence of the beginning of agriculture. By 2000 BC, agriculture had been established in the Central Valleys region of the state, with sedentary villages.
The diet developed around this time would remain until the Spanish Conquest, consisting of harvested corn, chocolate, chili peppers and gourds. Meat was hunted and included tepescuintle, deer, peccary and iguana; the oldest known major settlements, such as Yanhuitlán and Laguna Zope are located in this area as well. The latter settlement is known for its small figures called "pretty women" or "baby face." Between 1200 and 900 BC, pottery was being produced in the area as well. This pottery has been linked with similar work done in Guatemala. Other important settlements from the same time period include Tierras Largas, San José Mogote and Guadalupe, whose ceramics show Olmec influence; the major native language family, Oto-Manguean, is thought to have been spoken in northern Oaxaca around 4400 BC and to have evolved into nine distinct branches by 1500 BC. Historic events in Oaxaca as far back as the 12th century are described in pictographic codices painted by Zapotecs and Mixtecs in the beginning of the colonial period, but outside of the information that can be obtained through their study, little historical information from pre-colonial Oaxaca exist, our knowledge of this period relies on archaeological remains.
By 500 BC, the central valleys of Oaxaca were inhabited by the Zapotecs, with the Mixtecs on the western side. These two groups were in conflict throughout the pre-Hispanic period. Archeological evidence indicates that between 750 and 1521, there may have been population peaks of as high as 2.5 million. The Zapotecs were the earliest to gain dominance over the Central Valleys region; the first major dominion was centered in Monte Albán, which flourished from 500 BC until AD 750. At its height, Monte Albán was home to some 25,000 people and was the capital city of the Zapotec nation, it remained a secondary center of power for the Zapotecs until the Mixtecs overran it in 1325. The site contains a number of notable features including the Danzantes, a set of stone reliefs and the finding of fine quality ceramics. Starting from AD 750 previous large urban centers such as Monte Alban fell across the Oaxaca area and smaller dominions grew and evolved unti
Spain the Kingdom of Spain, is a country located in Europe. Its continental European territory is situated on the Iberian Peninsula, its territory includes two archipelagoes: the Canary Islands off the coast of Africa, the Balearic Islands in the Mediterranean Sea. The African enclaves of Ceuta, Peñón de Vélez de la Gomera make Spain the only European country to have a physical border with an African country. Several small islands in the Alboran Sea are part of Spanish territory; the country's mainland is bordered to the south and east by the Mediterranean Sea except for a small land boundary with Gibraltar. With an area of 505,990 km2, Spain is the largest country in Southern Europe, the second largest country in Western Europe and the European Union, the fourth largest country in the European continent. By population, Spain is the fifth in the European Union. Spain's capital and largest city is Madrid. Modern humans first arrived in the Iberian Peninsula around 35,000 years ago. Iberian cultures along with ancient Phoenician, Greek and Carthaginian settlements developed on the peninsula until it came under Roman rule around 200 BCE, after which the region was named Hispania, based on the earlier Phoenician name Spn or Spania.
At the end of the Western Roman Empire the Germanic tribal confederations migrated from Central Europe, invaded the Iberian peninsula and established independent realms in its western provinces, including the Suebi and Vandals. The Visigoths would forcibly integrate all remaining independent territories in the peninsula, including Byzantine provinces, into the Kingdom of Toledo, which more or less unified politically and all the former Roman provinces or successor kingdoms of what was documented as Hispania. In the early eighth century the Visigothic Kingdom fell to the Moors of the Umayyad Islamic Caliphate, who arrived to rule most of the peninsula in the year 726, leaving only a handful of small Christian realms in the north and lasting up to seven centuries in the Kingdom of Granada; this led to many wars during a long reconquering period across the Iberian Peninsula, which led to the creation of the Kingdom of Leon, Kingdom of Castile, Kingdom of Aragon and Kingdom of Navarre as the main Christian kingdoms to face the invasion.
Following the Moorish conquest, Europeans began a gradual process of retaking the region known as the Reconquista, which by the late 15th century culminated in the emergence of Spain as a unified country under the Catholic Monarchs. Until Aragon had been an independent kingdom, which had expanded toward the eastern Mediterranean, incorporating Sicily and Naples, had competed with Genoa and Venice. In the early modern period, Spain became the world's first global empire and the most powerful country in the world, leaving a large cultural and linguistic legacy that includes more than 570 million Hispanophones, making Spanish the world's second-most spoken native language, after Mandarin Chinese. During the Golden Age there were many advancements in the arts, with world-famous painters such as Diego Velázquez; the most famous Spanish literary work, Don Quixote, was published during the Golden Age. Spain hosts the world's third-largest number of UNESCO World Heritage Sites. Spain is a secular parliamentary democracy and a parliamentary monarchy, with King Felipe VI as head of state.
It is a major developed country and a high income country, with the world's fourteenth largest economy by nominal GDP and sixteenth largest by purchasing power parity. It is a member of the United Nations, the European Union, the Eurozone, the Council of Europe, the Organization of Ibero-American States, the Union for the Mediterranean, the North Atlantic Treaty Organization, the Organisation for Economic Co-operation and Development, Organization for Security and Co-operation in Europe, the Schengen Area, the World Trade Organization and many other international organisations. While not an official member, Spain has a "Permanent Invitation" to the G20 summits, participating in every summit, which makes Spain a de facto member of the group; the origins of the Roman name Hispania, from which the modern name España was derived, are uncertain due to inadequate evidence, although it is documented that the Phoenicians and Carthaginians referred to the region as Spania, therefore the most accepted etymology is a Semitic-Phoenician one.
Down the centuries there have been a number of accounts and hypotheses: The Renaissance scholar Antonio de Nebrija proposed that the word Hispania evolved from the Iberian word Hispalis, meaning "city of the western world". Jesús Luis Cunchillos argues that the root of the term span is the Phoenician word spy, meaning "to forge metals". Therefore, i-spn-ya would mean "the land where metals are forged", it may be a derivation of the Phoenician I-Shpania, meaning "island of rabbits", "land of rabbits" or "edge", a reference to Spain's location at the end of the Mediterranean. The word in question means "Hyrax" due to Phoenicians confusing the two animals. Hispania may derive from the poetic use of the term Hesperia, reflecting the Greek perception of Italy as a "western land" or "land of the setting sun" (Hesperia
Cuernavaca is the capital and largest city of the state of Morelos in Mexico. The city is located around a 90 min drive south of Mexico City using the Federal Highway 95D; the name "Cuernavaca" is derived from the Nahuatl phrase "Cuauhnāhuac" and means "surrounded by or close to trees". The name was Hispanicized to Cuernavaca; the coat-of-arms of the municipality is based on the pre-Columbian pictograph emblem of the city which depicts a tree trunk with three branches, with foliage, four roots colored red. There is a cut in the trunk in the form of a mouth, from which emerges a speech scroll representing the language Nahuatl and by extension the locative suffix "-nāhuac", meaning "near". Cuernavaca has long been a favorite escape for Mexico City and foreign visitors because of its warm, stable climate and abundant vegetation; the municipality was designated a Forest Protection Zone by President Lazaro Cardenas in 1937 to protect the aquifers, the vegetation and the quality of life of residents both in Mexico City and locally.
The city was nicknamed the "City of Eternal Spring" by Alexander von Humboldt in the 19th century. Aztec emperors had summer residences there, considering its location of just a 1½-hour drive from Mexico City, today many Mexico City residents maintain homes there. Cuernavaca is host to a large foreign resident population, including large numbers of students who come to study the Spanish language. Cuernavaca was nicknamed "City of Eternal Spring" by Alexander von Humboldt in the 19th century; the city is located in a tropical region, but its temperature is constant at 21–26 °C. It is located on the southern slope of the Sierra de Chichinautzin mountains. In the morning, warm air flows up the mountains from the valley below and in the late afternoon, cooler air flows down from the higher elevations. One ubiquitous flowering plant in the city is the bougainvillea; this pleasant climate has attracted royalty and nobles since Aztec times. Foreign princes and other nobles have been attracted to this place because of its flowers, fruits, fresh-water springs, waterfalls.
Emperor Maximilian I of Mexico set up a country residence in the city. Philanthropist Barbara Hutton, who held several royal titles through marriage, had a home on the outskirts of the city. Princess Maria Beatrice of Savoy lived there from 1971 to 1999, the Shah of Iran, Mohammad Reza Pahlavi, lived in exile in the city following the Iranian Revolution. Although a native of the U. S. Bauhaus designer Michael van Beuren established his residence in a family hacienda in Cuernavaca while fleeing the rise of the Nazi regime in Germany, a colony of Bauhaus designers grew in the city during World War II. Cuernavaca always has been a popular place for people from Mexico City to escape the city. In the 20th century, the climate and flora began to attract many foreigners as well. Population increase in this urban area began in 1940, but the metro area was not created, nor recognized, until the 1960s. From this time the population and the extension of the metropolitan area have grown. From 1960 to 1980, the population had grown from 85,620 to 368,166.
From the 1980s to the present, the municipalities of Emiliano Zapata, Temixco, Tepoztlán, Xochitepec have been added to the metropolitan area. These municipalities have seen the highest rates of growth, however; the metropolitan area has a population of 912,024 and the municipality has 366,321 inhabitants, as of 2015. Over the decades since 1970, this metropolitan area has become more economically and integrated with the Mexico City metropolitan area. Many people from Mexico City own second homes there for weekend retreats, both for the climate and for the well-developed infrastructure. Starting in the 1980s permanent migration of Mexico City residents began, spurred by pollution and crime problems in the capital; the 1985 Mexico City earthquake pushed many well-to-do families there, fearful of the next catastrophe. In many of these cases, the main breadwinner commutes each day to work in Mexico City; this has produced a considerable increase in housing developments on the outskirts of the city in the late 1990s and 2000s.
This influx has had a positive economic benefit for the city but has put pressure on the infrastructure as well. 85% of the city of Cuernavaca is dedicated to housing, much of this is in middle-class housing developments such as Rancho Cortés, Rancho Tetela, Colonia del Bosque, which are located on the outskirts of the city. Lower-income housing is concentrated in the city proper. Burials dated to c. 1000 BCE have been found in Morelos, in the north of the city. The first major culture to inhabit this area was the Tlahuica, whose main settlement was where the city of Cuernavaca is today; the Tlahuicas have inhabited this area at least since the 12th century. The first incursions south into the area by peoples of the Valley of Mexico occurred in the 12th century, when a lord named Xolotl conquered most of the Valley of Mexico. An allied Chichimeca tribe moved south into what is now northern Morelos state, making Techintecuitla lord of the Cuahnahuac area, with the Tlahuicas concentrated in the nearby towns of Yecapixtla and Yautecatle.
According to the Tlatelolco Annals, in 1365, the lord of Cuahnahuac, tried to conqu
Red is the color at the end of the visible spectrum of light, next to orange and opposite violet. It has a dominant wavelength of 625–740 nanometres, it is a primary color in the RGB color model and the CMYK color model, is the complementary color of cyan. Reds range from the brilliant yellow-tinged scarlet and vermillion to bluish-red crimson, vary in shade from the pale red pink to the dark red burgundy; the red sky at sunset results from Rayleigh scattering, while the red color of the Grand Canyon and other geological features is caused by hematite or red ochre, both forms of iron oxide. Iron oxide gives the red color to the planet Mars; the red colour of blood comes from protein hemoglobin, while ripe strawberries, red apples and reddish autumn leaves are colored by anthocyanins. Red pigment made from ochre was one of the first colors used in prehistoric art; the Ancient Egyptians and Mayans colored their faces red in ceremonies. It was an important color in China, where it was used to colour early pottery and the gates and walls of palaces.
In the Renaissance, the brilliant red costumes for the nobility and wealthy were dyed with kermes and cochineal. The 19th century brought the introduction of the first synthetic red dyes, which replaced the traditional dyes. Red became the color of revolution. Since red is the color of blood, it has been associated with sacrifice and courage. Modern surveys in Europe and the United States show red is the color most associated with heat, passion, anger and joy. In China and many other Asian countries it is the color of symbolizing happiness and good fortune. See below for shades of pink The human eye sees red when it looks at light with a wavelength between 625 and 740 nanometers, it is a primary color in the RGB color model and the light just past this range is called infrared, or below red, cannot be seen by human eyes, although it can be sensed as heat. In the language of optics, red is the color evoked by light that stimulates neither the S or the M cone cells of the retina, combined with a fading stimulation of the L cone cells.
Primates can distinguish the full range of the colors of the spectrum visible to humans, but many kinds of mammals, such as dogs and cattle, have dichromacy, which means they can see blues and yellows, but cannot distinguish red and green. Bulls, for instance, cannot see the red color of the cape of a bullfighter, but they are agitated by its movement.. One theory for why primates developed sensitivity to red is that it allowed ripe fruit to be distinguished from unripe fruit and inedible vegetation; this may have driven further adaptations by species taking advantage of this new ability, such as the emergence of red faces. Red light is used to help adapt night vision in low-light or night time, as the rod cells in the human eye are not sensitive to red. Red illumination was used as a safelight while working in a darkroom as it does not expose most photographic paper and some films. Today modern darkrooms use an amber safelight. On the color wheel long used by painters, in traditional color theory, red is one of the three primary colors, along with blue and yellow.
Painters in the Renaissance mixed red and blue to make violet: Cennino Cennini, in his 15th-century manual on painting, wrote, "If you want to make a lovely violet colour, take fine lac, ultramarine blue with a binder" he noted that it could be made by mixing blue indigo and red hematite. In modern color theory known as the RGB color model, red and blue are additive primary colors. Red and blue light combined together makes white light, these three colors, combined in different mixtures, can produce nearly any other color; this is the principle, used to make all of the colors on your computer screen and your television. For example, magenta on a computer screen is made by a similar formula to that used by Cennino Cennini in the Renaissance to make violet, but using additive colors and light instead of pigment: it is created by combining red and blue light at equal intensity on a black screen. Violet is made on a computer screen in a similar way, but with a greater amount of blue light and less red light.
So that the maximum number of colors can be reproduced on your computer screen, each color has been given a code number, or sRGB, which tells your computer the intensity of the red and blue components of that color. The intensity of each component is measured on a scale of zero to 255, which means the complete list includes 16,777,216 distinct colors and shades; the sRGB number of pure red, for example, is 255, 00, 00, which means the red component is at its maximum intensity, there is no green or blue. The sRGB number for crimson is 220, 20, 60, which means that the red is less intense and therefore darker, there is some green, which leans it toward orange; as a ray of white sunlight travels through the atmosphere to the eye, some of the colors are scattered out of the beam by air molecules and airborne particles due to Rayleigh scattering, changing the final color of the beam, seen. Colors with a shorter wavelength, such as blue and green, scatter more and are removed from the light that reaches the eye.
At sunrise and sunset, when the