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Who first made the photocopier ?

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It was marketed by the Rectigraph Company of Rochester, New York (USA) in 1907. The patentee of the Rectigraph machine was George C. Beidler, who conceived the idea four years earlier while working in an Oklahoma City land-claim office. The need for constant duplication of legal documents led him to search for a better means than retyping or laborious copying by hand, his initial experiments being made with an ordinary dry-plate camera. The prototype Rectigraph photocopier followed and was patented in 1906.

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When was Sikhism developed ?

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Sikhism originated in Punjab with the teachings of Guru Nanak Dev (1469-1539), who was born a Hindu. Conceived as a monotheistic faith, a sort of bridge between Hinduism and Islam, Sikhism, in fact, developed as a militant sword-arm for the protection of Hinduism. Guru Nanak Dev himself lived at a time when Babar was on his numerous invasions of India, culminating in the battle of Panipat, which brought in their wake unprecedented rapine and massacre of the Hindus. Guru Nanak’s message both to the Hindus and the Muslims was one of humanity, goodwill, compassion and high ethical conduct. He was followed by a series of high-minded Gurus.

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Who discovered North Pole ?

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Robert E. Peary, who explored Greenland’s coast in 1891-92, tried for North Pole in 1893. In 1900, he reached northern limits of Greenland and 83° 50′ N. In 1902, he reached 84° 06′ N. In 1906, he went from Ellesmere Island to 87° 06′ N. He sailed in the Roosevelt in July 1908 to winter off Cape Sheridan, Grant Land. The dash for the North Pole began on March 1 from Cape Columbia, Ellesmere Land. Peary reached the pole, 90° N on April 6, 1909.

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Why do we need to sleep ?

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Sleep is a normal activity in most higher organisms. Every human being, on average, spends a third of his or her life sleeping. Babies and children spend more time sleeping than adults while old people sleep less. The sleep-wake cycle is controlled by an internal biological clock which usually coincides with the day-night cycle. We do not know yet what sleep does to our body except that we feel refreshed after a good night’s sleep. But what lack of sleep does to an individual is quite well known. Prolonged lack of sleep leads to irritability, lack of concentration and even hallucinations. Thus, sleep certainly has a restorative function which helps the body face another active day.

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What is the mythological story behind the Kumbh festival ?

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The Kumbh festival is related to the myth about the churning of the ocean to get the nectar of immortality. The churning was done by both the gods and the demons. After the churning, there was a fight over distribution of the nectar. Some stories suggest that Lord Vishnu disguised himself as a beautiful lady and seized the nectar. While fleeing from the demons he placed the nectar on Garuda. A few drops fell on Allahabad, Nashik, Haridwar and Ujjain. Since then Kumbh Melas are held at these sites. Another version of the story suggests that during the chase the pot (Kumbh) was kept on the ground and the places where it was kept later became the sites of the festival. As the story goes, it took 12 days to carry the nectar to heaven. One day of the gods is equal to one human year, and hence the festival is celebrated every 12 years.

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The first written evidence of the Kumbh Mela comes from the writings of legendary Chinese traveller Hiuen Tsang who became famous because of his 17-year journey to India during the reign of Harshavardhana of Kannauj. Between CE 629-644, Tsang travelled across the length and breadth of the country. Several historians link this festival to Shankaracharya, the famous religious preacher. The eighth-century Hindu theologian and philosopher travelled across the country to revive Hinduism which at that point of time was being threatened by Jainism and Buddhism. Many experts believe that the Kumbh Mela might be linked with his efforts for the revival of the Hindu religion.

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