The Bell Homestead National Historic Site, located in Brantford, Ontario, Canada, also known by the name of its principal structure, Melville House, was the first North American home of Professor Alexander Melville Bell and his family, including his last surviving son, scientist Alexander Graham Bell.The younger Bell conducted his earliest experiments in North …

The decibel (symbol: dB) is a relative unit of measurement equal to one tenth of a bel (B).It expresses the ratio of two values of a power or root-power quantity on a logarithmic scale.Two signals whose levels differ by one decibel have a power ratio of 10 1/10 (approximately 1.26) or root-power ratio of 10 1 ⁄ 20 (approximately 1.12).. The unit expresses a relative change or an …

Alexander Graham Bell initially used Ahoy (as used on ships) as a telephone greeting. However, in 1877, Edison wrote to T. B. A. David, president of the Central District and Printing Telegraph Company of Pittsburgh: Friend David, I do not think we shall need a call bell as Hello! can be heard 10 to 20 feet away. What you think?

The history of AT&T dates back to the invention of the telephone.The Bell Telephone Company was established in 1877 by Alexander Graham Bell, who obtained the first US patent for the telephone, and his father-in-law, Gardiner Greene Hubbard.Bell and Hubbard also established American Telephone and Telegraph Company in 1885, which acquired the Bell Telephone …

The photophone is a telecommunications device that allows transmission of speech on a beam of light.It was invented jointly by Alexander Graham Bell and his assistant Charles Sumner Tainter on February 19, 1880, at Bell's laboratory at 1325 L Street in Washington, D.C. Both were later to become full associates in the Volta Laboratory Association, created and financed by Bell.

The Volta Laboratory (also known as the Alexander Graham Bell Laboratory, the Bell Carriage House and the Bell Laboratory) and the Volta Bureau were created in Georgetown, Washington, D.C. by Alexander Graham Bell. (19/20th-century scientist and inventor best known for his work on the telephone) The Volta Laboratory was founded in 1880–1881 with Charles Sumner …

Sylvester Graham (July 5, 1794 – September 11, 1851) was an American Presbyterian minister and dietary reformer known for his emphasis on vegetarianism, the temperance movement, and eating whole-grain bread.His preaching inspired the graham flour, graham bread, and graham cracker products.: 29 Graham is often referred to as the "Father of Vegetarianism" in the …

The earliest ancestors of the airboat were waterborne vehicles for testing aircraft engines. The first airboat was the Ugly Duckling, an aircraft propeller testing vehicle built in 1905 in Nova Scotia, Canada by a team led by Dr. Alexander Graham Bell. Brazilian aviation pioneer Alberto Santos-Dumont built a similar catamaran vessel for testing an aircraft engine in 1907, which he …

The Bell Telephone Company, a common law joint stock company, was organized in Boston, Massachusetts, on July 9, 1877, by Alexander Graham Bell's father-in-law Gardiner Greene Hubbard, who also helped organize a sister company – the New England Telephone and Telegraph Company.The Bell Telephone Company was started on the basis of holding …

A diving bell is a rigid chamber used to transport divers from the surface to depth and back in open water, usually for the purpose of performing underwater work. The most common types are the open-bottomed wet bell and the closed bell, which can maintain an internal pressure greater than the external ambient. Diving bells are usually suspended by a cable, and lifted and …

Etymologie van de naam. De Nederlandse naam is afgeleid van het Latijnse Alexander, dat een Romeinse weergave van de originele Griekse nominatief Αλέξανδρος (Alexandros) is.De genitieve Griekse vorm is Alexandrou.. De naam stamt af van alex-, een vorm van alexis uit het Proto-Indo-Europese [PIE] *alek-) dat "verweer, bescherming, verdediging" betekent samen met -andros, …

Alexander Graham Bell Medal. The National Geographic Society also awards, rarely, the Alexander Graham Bell Medal, for exceptional contributions to geographic research. The award is named after Alexander Graham Bell, scientist, inventor of the telephone and the second president of the NGS. Up to mid-2011, the medal has been twice presented: ...

Background. Born on May 18, 1983, Bell was 23 years old at the time of his death. He was a nephew of college basketball coach Frank Haith. Bell was a pitcher on the baseball team for John Adams High School in Ozone Park, and also studied acting in Flushing, Queens and worked odd jobs after the birth of his daughter, Jada, on December 16, 2002. His fiancée, Nicole Paultre, …

Origin and historical locations Bell's personal research after the telephone. In 1880, when the French government awarded Alexander Graham Bell the Volta Prize of 50,000 francs (approximately US$10,000 at that time; about $290,000 in January 2019's dollars) for the invention of the telephone, he used the award to fund the Volta Laboratory (also known as the …