Wolfgang Schivelbusch’s Disenchanted Night delineates the history of the industrialisation of light from the candle through the incandescent light bulb‚ demonstrating the relationship between the development of artificial light and the social‚ political‚ and economic milieu from which it emerged. This process was dependent on two social contexts which were integral to the pace and direction of the development of lighting technology‚ the Industrial Revolution and the Enlightenment. The Industrial
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A man wants to push a lamp of mass 7.5 kg across the floor as shown below. (a) Assuming the person pushes at a height 0.60 m above the floor and the frictional force between the base of the lamp and the floor is 15 N‚ determine whether the lamp will slide or tip over. (b) Calculate the maximum height above the floor at which the person can push the lamp so that it slides rather than tips. [0.5 m] 4. A 5.0 m long ladder leans
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purposes; the ink’s carrier‚ colorants‚ and other additives control flow and thickness of the ink and its appearance when dry. Many ancient cultures around the world have independently discovered and formulated inks for the purposes of writing and drawing. Lamp black is said to be used for making an ink. It has Fine soot collected from incompletely burned carbonaceous materials‚ used as a pigment and in matches‚ explosives‚ lubricants‚ and fertilizers. The researchers make use of the God-given gifts in a
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Mount Athos or Agion Oros‚ as it is locally known‚ is the oldest surviving monastic community in the world. It dates back more than a thousand years‚ to Byzantine times. It is a unique monastic republic‚ which‚ although part of Greece‚ it is governed by its own local administration. Because of its isolation Mount Athos has remained one of the most unspoiled parts of Greece. The landscape is stunning and wild‚ with small green valleys and gorges‚ well wooded peaks interspersed with precipitous ravines
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Life is Sweet at Kumansenu By Abioseh Nicol Notes about what I am reading 1 I knew enough about hell to stop me from stealing. I was holy in almost every bone. Some days I recognized the shadows of angels flopping on the backyard grass‚ and other days I heard faraway messages in the plumbing that howled underneath the house when I crawled there to look for something to do. The sea and the wet sand to one side of it; green tropical forest on the other; above it‚ the slow‚ tumbling clouds. The
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Teachers’ Day is celebrated on the 5th of September‚ the birth anniversary of my pre-eminent predecessor‚ Dr Sarvepalli Radhakrishnan‚ who was one of the great scholars and philosophers of our country. When he became the President of India in 1962‚ his admirers requested him to allow them to celebrate his birthday. Dr Radhakrishnan‚ who himself was an accomplished teacher‚ said‚ "instead of celebrating my birthday separately‚ it would be my proud privilege if the 5th of September
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transpiration. Results: Graph :The Pressure Change with time in different environmental Expt. Condition Time/min Slope 1 Ambient 0-10 -0.061 2 Ambient + Fan 10-20 -0.076 3 Ambient + Lamp 20-30 -0.070 4 Lamp + Fan 30-40 -0.063 Discussion: Qi Compare the rates for the 4 conditions you used. We can find that the rate of transpiration is directly proportional to the slope and the negative
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artificial light sources such as lamps and natural illumination of interiors from daylight. Daylighting (through windows‚ skylights‚ etc) is often used as the main source of light during daytime in buildings given its low cost. Artificial lighting represents a major component of energy consumption‚ accounting for a significant part of all energy consumed worldwide. Artificial lighting is most commonly provided today by electric lights‚ butgas lighting‚ candles‚ or oil lamps were used in the past‚ and still
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Kajal or kohl is a cosmetic product that is used on the eyes. Kajal is perhaps the first makeup product that most girls learn to use. The black colored kohl gives a definition to the eyes and makes them look beautiful. The use of kajal or kohl can be traced back to ancient times. The word kohl literally means to brighten the eyes. Kohl has been used in countries like Egypt‚ India and Arab countries since many years. The method of making kajal or kohl in every country was different. In Egypt‚ kohl
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for different purposes. He said that he made one of them for reading close up and the other was made to see far away at a nice view. He also made a new type of oil lamp‚ oil lamps on the street often burned out quickly. Ben franklin made a new type of lamp‚ his lamp had a square shape and a hole on the top to draw up the smoke‚ his lamps lasted twice as long as the other and burned all night long. Ben franklin showed intellect all through his life from when was a kid reading and writing to when he
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