In the previous section we saw limits that were infinity and itâs now time to take a look at limits at infinity. By limits at infinity we mean one of the following two limits. In other words, we are going to be looking at what happens to a function if we let x get very large in either the positive or negative sense.
Testing the Device. Bellâs assistant, Thomas Watson, was in a nearby room in Bellâs workshop, waiting to see if Bellâs device would work. Bell spoke these famous words into his device: âMr. Watson, come here. Watson heard the words clearly and distinctly, and thus, the first working model of a telephone was born. Although there were other inventors working on similar designs, including one whose patent application was almost on the same day as Bell submitted his, Bellâs invention was the first actual working telephonic device.
Samidha Verma. Like all other inventions, Telephone unfolds a fascinating story that lead to its birth. It all started when an inspired Scotsman named Alexander Graham Bell invented telephone in 1876. Thomas Watson had fashioned the device-a crude thing prepared out of a funnel, wooden stand, acid, and cooper wires.All these simple parts lead to the simple earliest call, belie the complicated past.ut a major breakthrough in this field came when unique combination of voice and electricity led to actual invention of telephone by Graham Bell in 1876. He then got his patent issued for Improvements in Telegraph in the same year.