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Alphabet

 Alphabet, or phonemic alphabets, are sets of letters, usually arranged in a fixed order, each of which represents one or more phonemes, both consonants and vowels, in the language they are used to write. In some case combinations of letters are used to represent Single phonemes, as in the English sh, ch and th. The Greeks created the first phonemic alphabets when they adapted the Phoenician alphabet to write Greek. History of Alphabets Written language was the product of an agrarian society. These societies were centered around the cultivation of grain. Palaeography is the study of the progressive changes and developments in the form of letters over time and is usually applied to writing on less durable materials such as parchment, leather or papyrus. Where did the alphabet come from? One of the most significant inventions in human history, the alphabet has a rich and fascinating history. Here’s the 30-second version of the story. The original set of 30 signs, known as the Semitic alp
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Deserts

Deserts are dry areas that experience extremely small amounts of rainfall. They can be either cold or hot. Deserts are determined by low amounts of rainfall, not temperature. They typically receive less than 30 cm of rain per year. The driest deserts often receive less than 2 cm of rain per year. Temperatures in the desert are extreme. Because of the lack of moisture in the air, heat quickly dissipates as the sun sets. In hot deserts, the temperatures can range from above 100 degrees Fahrenheit in the day to below 32 degrees Fahrenheit at night. Cold deserts generally receive more rainfall than do hot deserts. In cold deserts, temperatures in winter range between 32-39 degrees Fahrenheit with occasional snowfall. Some locations of Cold Desert Antarctic Central Asia Greenland Some locations of Hot Desert North America West Coast of South America Central Australia North Africa Middle East Deserts Wildlife Deserts are home to many burrowing animals. These animals include badgers, jack rab

Xerox

 In 1937, the process called Xerography was invented by American Law student Chester Carlson. Carlson had invented a copying process based on electrostatic energy. Xerography became commercially available in 1950 by Xerox Corporation. Xerography comes from the Greek for “dry writing”. Chester Carlson had been frustrated with the slow mimeograph machine and the cost of photography and that lead him to inventing a new way of copying. He invented an electrostatic process that reproduced words on a page in just minutes. Carlson had a hard time finding investors in his new invention. He was turned down by IBM and U. S. Army Signal Corps, it took him eight years to find investor, which was the Haloid Company later to become the Xerox Corporation. Chester Carlson was both a research engineer and a patent attorney. He filed a patent application in April, 1939, stating, “I knew I had a very big tiger by the tail”. The Xerox Corporation trademarked the name “Xerox” and has protected the name ca

Gymnastics

  A successful gymnast must be strong, flexible, brave and graceful. However, most people can do some form of gymnastics. We learn as a child to do cartwheel or handstand in school, the basis of all gymnastic moves. Gymnastic dates back to ancient Greece and are a form of acrobatic exercise. Now a days it has evolved into a popular spectators spot. Rhythmic and artistic are the two main types of gymnastics. Artistic gymnastics is performed on objects such as a wooden horse or a vault. During gymnastics players compete in eight different events. There are floor exercises and vaults. Men compete on bars, horse and rings. Women have to perform on beams and asymmetric bars. Judges award points out of ten and many of the champions of yesteryears have been teenagers. History of Gymnastics Gymnastics has been around for over 2000 years but as a competitive sport it is more than 100 years old. In 1830s, the sport of gymnastics was introduced to United States and its school systems by immigrant

Flowers

 Nature has its ornaments to make it beautiful and worth watching, and these ornaments are embedded with gems called flowers. The history of flowers on the planet starts long before humans lived. Flowers announce spring and attract honeybees and also been used in medicine and eaten for food. They have become part of culture rituals, held by brides during weddings and found in gravesites. Perfect & imperfect Flowering plants abruptly appeared during the Cretaceous period, over 100 million years ago when dinosaurs roamed. Just as people love the scent and colour of flowers, animals and insects do too. Flowers having both male and female reproductive parts are called “perfect”. Flowers having one or the other are called “imperfect” or “unisexual”. Plants & flowers A plant might have some flowers with male reproductive parts called stamens and other flowers with female parts, which are called carpels. Plant having both male and female flowers is “monoecious”. A plant having only on