Who Invented the Cell Phone?

Who Invented the Cell Phone?...

The mobile or cell phone was invented by Martin Cooper in 1973. The history of the cell phone shows that Nathan Stubblefield had a patent in 1908. However the patent was for cave radio phones and not the mobile device as we know it today. Early History As stated, Stubblefield’s patent was for cave radio telephones, as the device was known then. The mobile phone’s origin can be traced back to the 1940s. Bell Labs had already made some mobile base stations. These were refined in the 1960s but they were mainly for radio telephony. The main users of radio telephony during those days were the military. These hand held radio gadgets had been patented in 1969 to George Sweigert. The history of the cell phone began in 1945 and these early phones are now called zero generation phones. It consisted of a solitary base that would cover a specific spot and had very limited coverage. First Generation Phones Cooper’s invention was patented on October 17, 1973. the first phone call was made by Cooper months before he applied for the patent, on April 3, 1973. He made the call to Dr. Joel Engel, a researcher at AT&T’s Bell Labs. Cooper was working at Motorola at the time, and the call was made with several media people present. Soon after, companies started making cellular networks. Although the telephone was still dominant, other companies started coming out with cell phones, although they were still large and heavy. Second Generation Phones The next stage in the history of the cell phone was the development of 2G (second generation) phones. Among the earliest 2G phone systems were GSM, IDEN, and IS-95. GSM networks started appearing in 1991 (specifically in Finland). Compared with...
Who Invented the Toaster?

Who Invented the Toaster?...

The toaster is a very reliable kitchen appliance used for toasting various kinds of bread. With the help of this electric device, you can easily enjoy nice tasting bread anytime you want. Today, toasters are classified into three major varieties, namely conveyors, ovens and pop-up toasters. It is good to find out more about this useful electric appliance including who invented the toaster. The Invention of the Toaster Who invented the toaster? George Schneider, who once worked for the American Electrical Heater Co. in Detroit, was the very first to apply for an electronic toaster patent application in the United States, which happened some time around 1893 to 1900. In 1909, General Electric applied a patent for its GE model D-12, which became the very first successful commercial electronic toaster. Its design was credited to a technician named Frank Shailor. Additional Facts and Other Important Information In 1913, a major advancement in electronic toasters took place when American inventor Lloyd Groff Copeman applied a number of patents for his creation. His invention allowed both sides of a bread to toast even without touching it. Aside from this breakthrough, he was also credited for inventing the very first ice cube tray made from rubber as well as the electric stove. After that, toasters received another improvement when the semi-automatic variant was launched. This product automatically turned off once the bread toasted. In 1921, American inventor Charles Strite came up with the very first automatic pop-up toaster. Unlike earlier models, the toasted bread ejects automatically. After that, the Waters Genter Co. launched the Model 1-A-1 Toastmaster in 1925, which toasted both sides of the bread simultaneously. By 1946, ultramodern chrome designs were launched. In 1950, product models like the T-50, T-35...
Who Invented the Stock Ticker?

Who Invented the Stock Ticker?...

It was in the year 1867 when Edward A. Calahan came up with the invention of the first stock telegraph printing instrument. But was Calahan noted as the first person who invented the stock ticker and was this model the very first product that came out? Or is there someone else who should get the credit? The Telegraph Years ago, Claude Chappe invented a non-electric telegraph that used a visual system. This optical system was created in 1794. After some time, with many modifications (like the invention of the Morse Code by Samuel Morse), the use of the telegraph widely spread. Companies were set up, and jobs were given to people who wanted to work for a telegraph firm. From Calahan’s Ideas to the Creation of the Stock Telegraph Calahan was working in the American Telegraph Company, then, when Calahan’s invention of the stock telegraph was created in 1867. Calahan thought that stock prices during those times could actually be produced through a form of telegraphy. And, thus, Calahan started to work on these ideas to create a very useful invention. When the invention was made, it produced an interesting sound that actually influenced its name, the stock ticker. Thomas Edison’s Part in the Invention Before Thomas Edison became known as the inventor of the electric light bulb, this inventor actually started as a simple telegrapher in younger years. After successfully improving the stock ticker model, Edison took on more challenging experiments to create more things. Edison’s invention was called as the Universal Stock Printer. For the creation of this improved model of the stock ticker, and other related creations, Edison was able to put up the first laboratory – albeit, small in size – and a facility for...
Who Invented the Light Bulb?

Who Invented the Light Bulb?...

When asked who invented the light bulb there are those who quickly answer that it was Thomas Edison. Unfortunately it was not Edison who invented the light bulb since there are at least 22 others who have invented something that resembles something like it. There were actually others who had come up with the idea to generate light from electricity. Comparing Edison Thomas Edison’s invention may not be the first but it is one that far exceeds many of the earlier inventions. It is noted that Edison did not just create a new type of light bulb he also created an integrated lighting system. Origin As early as the 1800’s there have been inventors who have tried to convert electricity and produce light. Sir Humphry Davy was one who was a bit successful. He was an English physician who was able to pass an electric current through strips of platinum. The only drawback with his experiments was that the platinum strips dissipated rather quickly and he was unable to create light. He then created the Arc lamp in 1809. He was able to make an electrical connection among a couple of charcoal rods that were connected to a battery. The light was quite bright however it was small as well. Though we can not credit Sir Humphry Davy as the one who invented the light bulb he did add to its development. Further Developments The next 50 years after Davy’s success will bring up others who would strive to lengthen the life of the light produced from electricity. A notable inventor is Warren de la Rue who was able to make a more efficient design. He used a platinum coil in a vacuum tube that produced light a lot...
Who Invented the Color Television?

Who Invented the Color Television?...

Early Traces of Color Television Well, early traces points to a German patent that was garnered in 1904. This was said to contain the first recorded proposal written for a color television. In 1928, Charles Jenkins receives the license for the first television station issued by the Federal Radio Commission. Another known patent was filed by Vladimir Zworykin in 1925 for a television system using all-electronic color. The transmission and television reception of the images was done with what was called a kinescope tube. However, both patents did not receive instant success for the color television system. Nevertheless, these were the earliest records in history for color television, and these early records of inventors were known to be the ones who invented the color television system. Other Attempts in Modifying the System With Peter Goldmark leading the group of CBS researchers, Goldmark invented a particular mechanical color TV system in 1940. This system was actually based on John Logie Baird’s designs in 1928. But this didn’t last long in the market. Rise to Commercial Success It was only during the year 1949 did televisions rose to commercial success with the monochrome television. Around ten million of these television sets were sold to a lot of people. And television programs were made available to the pleasure of the public. But color television systems can only be licensed if the broadcast signal for colored systems can be received as a monochrome signal on these television sets. Attempts at Making a National Standard System In 1950, FCC authorized CBS’s color televisions system as the standard system throughout the nation even though the system used was not actually compatible with early products of black and white monochrome TV sets. (CBS and RCA are...
Who Invented the Gatling Gun?

Who Invented the Gatling Gun?...

The Gatling gun is arguably one of the more famous and recognizable among all of the firearms ever made. Due to its distinct appearance and its unique capabilities, many are familiar with Gatling gun, even those who are not well-versed with firearms. Despite this familiarity even with the most gun-averse of laymen however, not many know who invented the Gatling gun along with the history of its design and development and its impact on modern warfare. As its name suggests, it is easy to remember who invented the Gatling gun. This because the man who invented the Gatling gun lent it its name. The man who invented the Gatling gun is Richard J. Gatling, an inventor responsible for numerous patents in the United States in the latter half of the 19th Century. Despite the Gatling gun’s fearsome reputation in the battlefield, the man who invented the Gatling gun reasoned his newly-designed gun will actually lessen the casualties in warfare. Since the Gatling gun will allow relatively few personnel to deliver tremendous fire power (for its time), less soldiers will then be needed to fight wars and therefore lesser battle casualties. Of course we all know that the idealistic notion of Gatling that fewer men will die in battle as a result of his invention’s tremendous fire power was baseless. But the man who invented the Gatling gun was in part right since for the first time in history, a few personnel with the help of his invention will be able inflict massive damage to the enemy. Battle before was mostly a man-to-man struggle between combatants but with the Gatling gun, a soldier can single-handedly inflict heavy casualties on the other side. More than a hundred years after its invention,...
Page 1 of 1012345...10...Last »