Answer 7 people found it helpful namitaverma14041983 Answer: The bell of our school is mainly made up of metal. And I shall you know that metal has a properties of sonorosity. Therefore when Peon stuck the bell then it's produce a sound. Mark me as a Brainliest Find Physics textbook solutions? Class 11 Class 10 Class 9 Class 8 Class 7 Class 6

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Alexander Graham Bell is best known as the inventor of the telephone — the first to transmit the human voice by means of an electric current — but there was much more to this extraordinary man than his breakthrough in communications technology.

On March 7, 1876, 29-year-old Alexander Graham Bell receives a patent for his revolutionary new invention: the telephone. The Scottish-born Bell worked in London with his father, Melville Bell.

A story appearing online since many years claims that the common Telephone greeting word ‘Hello’ actually comes from the girlfriend name Margaret Hello of Alexander Graham Bell who invented the Telephone. It is said that Graham Bell used her name ‘Hello’ as a telephone greeting out of Love, so that she will be remembered.

The inventions of Alexander Graham Bell—most famously the telephone but also methods of recording sound—have allowed people to hear each other’s voices for more than 130 years. Until now, no one knew what the inventor himself sounded like. The Smithsonian’s National Museum of American History, through a collaborative project with the.

The strokes are as follows: 1) Intake stroke — air and vaporised fuel are drawn in. 2) Compression stroke - fuel vapor and air are compressed and ignited. 3) Power stroke — fuel combusts and.

One of Edinburgh's most famous sons, Alexander Graham Bell was a famous inventor, scientist and engineer who is credited with patenting the first practical telephone. He also co-founded the.

Elisha Gray, (born Aug. 2, 1835, Barnesville, Ohio, U.S.—died Jan. 21, 1901, Newtonville, Mass.), U.S. inventor and contestant with Alexander Graham Bell in a famous legal battle over the invention of the telephone. Gray invented a number of telegraphic devices and in 1869 was one of two partners who founded what became Western Electric Company.

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Alexander Graham Bell received the fundamental U.S. patent for the telephone and telephone system in 1876. Bell’s background was in hearing and speech, not electrical technologies. He came from a family of professional speech teachers, and his mother and his wife were both deaf.