The purpose of a light bulb is to produce light when the Sun is not shining! Another answer Light bulbs were invented to help people to see things better in gloomy or dark conditions and to be able to see their way if they wanted to go somewhere at night. Having any kind of artificial light - not just light bulbs but flaming torches, oil lamps, etc. It depends on what the lightbulb is for
Thomas Alva Edison invented the phonograph inand it quickly became the most popular home-entertainment device of the century. Seeking to provide a visual accompaniment to the phonograph, Edison commissioned Dickson, a young laboratory assistant, to invent a motion-picture… Early years In Samuel Edison became the lighthouse keeper and carpenter on the Fort Gratiot military post near Port HuronMichiganwhere the family lived in a substantial home.
Alva, as the inventor was known until his second marriageentered school there and attended sporadically for five years. He was imaginative and inquisitive, but because much instruction was by rote and he had difficulty hearing, he was bored and was labeled a misfit.
To compensate, he became an avid and omnivorous reader. In Edison quit school and began working as a trainboy on the railroad between Detroit and Port Huron.
Four years earlier, the Michigan Central had initiated the commercial application of the telegraph by using it to control the movement of its trains, and the Civil War brought a vast expansion of transportation and communication.
Edison took advantage of the opportunity to learn telegraphy and in became an apprentice telegrapher. The transformation of telegraphy to an auditory art left Edison more and more disadvantaged during his six-year career as an itinerant telegrapher in the Midwest, the South, Canadaand New England.
Amply supplied with ingenuity and insight, he devoted much of his energy toward improving the inchoate equipment and inventing devices to facilitate some of the tasks that his physical limitations made difficult. By January he had made enough progress with a duplex telegraph a device capable of transmitting two messages simultaneously on one wire and a printer, which converted electrical signals to letters, that he abandoned telegraphy for full-time invention and entrepreneurship.
Pope, a noted electrical expert, to produce the Edison Universal Stock Printer and other printing telegraphs. Between and he worked out of NewarkNew Jerseyand was involved in a variety of partnerships and complex transactions in the fiercely competitive and convoluted telegraph industry, which was dominated by the Western Union Telegraph Company.
As an independent entrepreneur he was available to the highest bidder and played both sides against the middle. Years of litigation followed.
Menlo Park Although Edison was a sharp bargainer, he was a poor financial manager, often spending and giving away money more rapidly than he earned it. In he married year-old Mary Stilwell, who was as improvident in household matters as he was in business, and before the end of they were in financial difficulties.
Accompanying him were two key associates, Charles Batchelor and John Kruesi. He was also responsible for fashioning the drawings that Kruesi, a Swiss-born machinist, translated into models. Edison experienced his finest hours at Menlo Park. While experimenting on an underwater cable for the automatic telegraph, he found that the electrical resistance and conductivity of carbon then called plumbago varied according to the pressure it was under.
In February Edison began experiments designed to produce a pressure relay that would amplify and improve the audibility of the telephonea device that Edison and others had studied but which Alexander Graham Bell was the first to patentin By the end of Edison had developed the carbon-button transmitter that is still used in telephone speakers and microphones.
The phonograph Edison invented many items, including the carbon transmitter, in response to specific demands for new products or improvements. But he also had the gift of serendipity: This was how, inhe achieved his most original discovery, the phonograph. Because the telephone was considered a variation of acoustic telegraphy, Edison during the summer of was attempting to devise for it, as he had for the automatic telegraph, a machine that would transcribe signals as they were received, in this instance in the form of the human voice, so that they could then be delivered as telegraph messages.
The telephone was not yet conceived as a general, person-to-person means of communication.
Edison hoped to reify this concept by employing a stylus-tipped carbon transmitter to make impressions on a strip of paraffined paper. To his astonishment, the scarcely visible indentations generated a vague reproduction of sound when the paper was pulled back beneath the stylus.
Thomas Alva Edison demonstrating his tinfoil phonograph, c. LC-DIG-cwpbh Edison unveiled the tinfoil phonograph, which replaced the strip of paper with a cylinder wrapped in tinfoil, in December It was greeted with incredulity.
Indeed, a leading French scientist declared it to be the trick device of a clever ventriloquist. Edison was projected into worldwide prominence and was dubbed the Wizard of Menlo Parkalthough a decade passed before the phonograph was transformed from a laboratory curiosity into a commercial product.
Edison, ThomasThomas Edison listening to a phonograph. First model of Thomas Alva Edison's phonograph, c.
Edison thought he would be able to solve this by fashioning a microtasimeter-like device to control the current. He boldly announced that he would invent a safe, mild, and inexpensive electric light that would replace the gaslight.To introduce students to the realm and power of inventions, and help them to better recognize their impact on people and society.
This lesson is the first of a two-part series on technology and inventions. Students are introduced to the world of technology and inventions and how its ongoing.
A sweeping history of the electric light revolution and the birth of modern America The late nineteenth century was a period of explosive technological creativity, but more than any other invention, Thomas Edison’s incandescent light bulb marked the arrival of modernity, transforming its inventor into a mythic figure and avatar of an era.
THOMAS EDISON "QUOTES" Paraphrased, Modernized, And Logically Sequenced For Educational Use Another Uniquely Creative Award-Winning "*Clean Contents" Document.
Fascinating facts about the invention of the light bulb by Thomas Alva Edison Albon Man formed the Sawyer & Man Electric Co for the purpose of protecting the Sawyer-Man electric lamp patent.
the lack of good vacuum and an adequate electric source resulted in a short lifetime for the bulb and an inefficient light. Fifteen years later, in.
(barnweddingvt.com)—Possibly the most well-known consequence of Einstein's theory of special relativity is that nothing can travel faster than the speed of light, c. According to the mass-energy. Jan 12, · Thomas Edison's most famous invention, the lightbulb, paved the way for modern life.
Contents. the incandescent light bulb and one of the earliest motion .