Green vs Cairo

Informations

Green is the color between blue and yellow on the visible spectrum. It is evoked by light which has a dominant wavelength of roughly 495–570 nm. In subtractive color systems, used in painting and color printing, it is created by a combination of yellow and blue, or yellow and cyan; in the RGB color model, used on television and computer screens, it is one of the additive primary colors, along with red and blue, which are mixed in different combinations to create all other colors. By far the largest contributor to green in nature is chlorophyll, the chemical by which plants photosynthesize and convert sunlight into chemical energy. Many creatures have adapted to their green environments by taking on a green hue themselves as camouflage. Several minerals have a green color, including the emerald, which is colored green by its chromium content. During post-classical and early modern Europe, green was the color commonly associated with wealth, merchants, bankers and the gentry, while red was reserved for the nobility. For this reason, the costume of the Mona Lisa by Leonardo da Vinci and the benches in the British House of Commons are green while those in the House of Lords are red.

It also has a long historical tradition as the color of Ireland and of Gaelic culture. It is the historic color of Islam, representing the lush vegetation of Paradise. It was the color of the banner of Muhammad, and is found in the flags of nearly all Islamic countries.In surveys made in American, European, and Islamic countries, green is the color most commonly associated with nature, life, health, youth, spring, hope, and envy. In the European Union and the United States, green is also sometimes associated with toxicity and poor health, but in China and most of Asia, its associations are very positive, as the symbol of fertility and happiness. Because of its association with nature, it is the color of the environmental movement. Political groups advocating environmental protection and social justice describe themselves as part of the Green movement, some naming themselves Green parties. This has led to similar campaigns in advertising, as companies have sold green, or environmentally friendly, products. Green is also the traditional color of safety and permission; a green light means go ahead, a green card permits permanent residence in the United States.

Source: Wikipedia

Informations

Cairo ( KY-roh; Arabic: القاهرة‎, romanized: al-Qāhirah, pronounced [ælˈqɑːhɪɾɑ] (listen), Coptic: ⲕⲁϩⲓⲣⲏ) is the capital of Egypt and the largest city in the Arab world. Its metropolitan area, with a population of over 20 million, is the biggest in Africa, the Arab world, and the Middle East, and the 6th-largest in the world. Cairo is associated with ancient Egypt, as the famous Giza pyramid complex and the ancient city of Memphis are situated in its geographical location. Located near the Nile Delta, Cairo was founded in 969 AD by the Fatimid dynasty, but the property composing the present-day city was the site of early national capitals whose descendants stay visible in parts of Old Cairo. Cairo has long been a centre of the region's cultural and political life, and is titled"the city of a thousand minarets" for its preponderance of Islamic architecture. Cairo is considered a World City with a"Beta +" classification based on GaWC.Cairo has the oldest and largest film and music industries in the Arab world, as well as the world's second-oldest institution of higher learning, Al-Azhar University.

Many international media, businesses, and organizations have regional headquarters in the city; the Arab League has had its headquarters in Cairo for the majority of its existence. With a population of over 9 million spread over 3,085 square kilometers (1,191 sq mi), Cairo is definitely the largest city in Egypt. An additional 9.5 million individuals reside in close proximity to the city. Cairo, like many other megacities, suffers from high levels of traffic and pollution. The Cairo Metro is one of the only two subway systems in Africa (the other being in Algiers, Algeria), and ranks amongst the fifteen busiest in the world, with over 1 billion annual passenger rides. The market of Cairo was ranked first in the Middle East in 2005, and 43rd internationally on Foreign Policy's 2010 Global Cities Index.

Source: Wikipedia