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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the boom in America was an electric time for most americans‚ life as just beginning but the life style of many americans led to the great depression. the first world war as the peek for most farmers because europe was in demand of agriculture and food. in order for farmers to meet the minimum requirements for the growing demand for food‚ machinery was invented such as tractors‚ but not all the farmers could afford the expensive machinery. many of the smaller farmers sold their farms to the larger
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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 1920’s were the years of expression‚ change‚ innovations and new opportunities. Within these years women were exposed to different types of cultures and expressions some major ones being jazz and flappers. Women also gained the right to vote when the nineteenth amendment was passed allowing women to now have a say in political circumstances. Sheppard-Towner Act was also passed making it possible to have well-baby clinics‚ educational programs‚ as well as nursing. Expression for women came from
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Industrialization would not have happened so quickly if it wasn ’t for new inventions. Inventions made it easier for people to do their jobs and get them finished quicker. Many new inventions made during this time period where the spinning jenny‚ water frame‚ steam engine and locomotive. The inventors of these inventions were Jasmes Hargreaves‚ Richard Arkwright‚ Jame ’s Watt and Richard Trevithick. New ideas‚ methods‚ and machinery helped the Industrial Revolution go at a faster pace. The spinning
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Sarah E. Goode‚ born in 1855‚ was the first African American woman to receive a United States patent. Her invention was a cabinet bed. When the bed was not in use‚ the invention also functioned as a roll-top desk. During the time of its invention‚ people commonly lived in studios or small apartments. Most people did not have the space for bulky or large pieces of furniture because there was little space in there homes as it was. However‚ the cabinet desk was an ideal piece of furniture because it
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Western and Northern Europe continued as they had for centuries. Immigrants from Eastern‚ Southern Europe‚ Canada and Latin America came after the 1880’s‚ as well. By 1920‚ Eastern and Southern Europe made up 70 percent of immigrants entering the country‚ and after the war of 1914most had dropped off due to restrictions imposed in the 1920’s. Immigrants made their way to America from their predecessors‚ escaping religion‚ racial‚ and political persecution in hopes to seek relief of economic relief and
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Can you believe that over a few decades ago changed the way women dress and act? The flapper girls sparked in the early 1920’s leading a revolutionary change to modern day clothing for both women and men. The style that most of us try and pull of came about during a time of change and growth in our nation. Flappers in the 1920’s are considered to be our modern day feminist. During their time period‚ women were granted with more freedoms and equality to men‚ such as voting and being able to hold
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The Problems Caused by the Modern Inventions As one famous commercial says‚ “Technology always comes from humanity.” In this modern world‚ we have been counting on technology. It deprives us of our time and energy‚ although we can no longer live without it. Since it has made a huge impact on our lives‚ some negative effects caused by the technology are not irrelevant to us. Thus‚ as I have observed‚ the problems caused by the modern inventions are the distancing among people‚ the limitation of
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the most important technology evolutions‚ Greece and Rome both had an impact on technology evolution. Most of their inventions and discoveries are still used today. Throughout the history of Rome‚ the Romans intelligence served them well with inventions like aqueducts‚ bound books‚ money‚ newspapers‚ or even concrete. However‚ the same could be said about Greece. The Greeks inventions consisted of the water mill‚ alarm clock‚ and basics of modern science. Romans technology changed more drastically
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