technological advancements significantly improved and innovative construction techniques surfaced‚ surprise attacks became more common that often caused a reputable amount of destruction to occur. While initial battles were mostly land-based‚ the invention of the submarine provided a new source for stealth and power as opponents often found difficulty providing defense and counterattacks to the underwater vessel. Not only do submarines allow for commanding
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A light-emitting diode (LED) is a semiconductor light source.[6] LEDs are used as indicator lamps in many devices and are increasingly used for other lighting. Appearing as practical electronic components in 1962‚[7] early LEDs emitted low-intensity red light‚ but modern versions are available across the visible‚ ultraviolet‚ and infrared wavelengths‚ with very high brightness. When a light-emitting diode is switched on‚ electrons are able to recombine with holes within the device‚ releasing energy
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W \M.vO Margaret Mead Warfare: An Invention — Not a Biological Necessity (1940) IN 1969‚ TIME MAGAZINE named anthropologist Margaret Mead (1901-1978) the "Mother of the World." This title stemmed in part from Mead’s work with young girls in various cultures around the world‚ but it also recognized the moral and intellectual status that she earned during her fifty-year career as the world’s most famous and respected anthropologist. Mead was born in Philadelphia in 1901. She earned a
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explosive the world had ever seen and also one of the four great inventions of ancient China. When this was in the hands of strategists‚ the gunpowder was turned into black powder used in war. The military uses of gunpowder began at the end of the Tang Dynasty. In the Song Dynasty‚ the government set up gunpowder workshops‚ where flammable or explosive weapons like a fire cannon‚ rocket and missiles etc. were produced in different periods. In 1‚259 AD‚ something called an erupter was introduced. It
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and utilized whips on slave women (Sullivan 24‚ 26). Due to the stress induced by the slave owners‚ slaves endured a high rate of spontaneous abortions‚ stillbirths‚ and deaths after birth (Digital History 1). The impotent doctors of the antebellum period
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Develop a versatile invention business plan for use by invention hunts‚ licening agents‚ engineers‚ provisional patents‚ etc. See actual examples. Overview As an experienced inventor‚ I’ve learned that an idea is not perceived as a viable business opportunity until it can be effectively communicated on paper (or any other readable format). No matter how great your idea is‚ most people expect that you have it written down. When I was new to inventing‚ I had no idea what that meant. I searched
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The Spanish period Spanish colonial motives were not‚ however‚ strictly commercial. The Spanish at first viewed the Philippines as a stepping-stone to the riches of the East Indies (Spice Islands)‚ but‚ even after the Portuguese and Dutch had foreclosed that possibility‚ the Spanish still maintained their presence in the archipelago. Quick Facts Images Videos Audio quizzes Lists 1Other government offices and ministries are located in Quezon City and other Manila suburbs. 2Piso in Filipino; peso
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made some paths from Africa to Asia easier to pass with primitive boats. After entering Asia‚ the early humans spread out little by little with every generation that was born. A burial site in Australia that is over 45‚000 years old suggests the time period when our ancestors migrated to Australia. Since all of the ice had not melted when the Stone Age began‚ many people could have crossed the land bridge that many believed to have connected Asia to present-day Alaska. To conclude‚ ancient humans moved
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One day Edison’s boss called him to his office. He asked him how much it would cost to buy his improvements. He wanted $6‚000 but his boss offered $40‚000! Edison bought a factory and started inventing. In 1871‚ Edison married Mary Stiltwell and had three children. In 1876‚ Edison moved out of Newark and into Meleno Park. In 1876 Alexander Bell invented the telephone and Edison improved it by making it battery powered. He then invented a lampback out of graphite and it made the signal clearer
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Do you think life is possible without mobiles? Absolutely not! Mobiles has now became an important part of our life. In fact it has virtually become a necessity for people everywhere. As many things have been developed‚ from year to year‚ century to century‚ the world has become more unique. But mobiles will always be a popular gadget in the world. However‚ it also has certain advantages and disadvantages. Now a days‚ mobiles are not only used for communication but for other reasons also. The
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