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Amos Dolbear
Amos Emerson Dolbear (; November 10, 1837 – February 23, 1910) was an American physicist and inventor. Dolbear researched electrical spark conversion into sound waves and electrical impulses. He was a professor at University of Kentucky in Lexington, Kentucky, Lexington from 1868 until 1874. In 1874 he became the chair of the physics department at Tufts University in Medford, Massachusetts. He is known for his 1882 invention of a system for transmitting telegraph signals without wires. In 1899 his patent for it was purchased in an unsuccessful attempt to interfere with Guglielmo Marconi's wireless telegraphy patents in the United States. Biography Amos Dolbear was born in Norwich, Connecticut, Norwich, Connecticut, on November 10, 1837. He was a graduate of Ohio Wesleyan University, in Delaware, Ohio, Delaware, Ohio. While a student there, he had made a "talking telegraph" and invented a receiver containing two features of the modern telephone: a permanent magnet and a metall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norwich, Connecticut
Norwich ( ) is a city in New London County, Connecticut, United States. The Yantic River, Yantic, Shetucket River, Shetucket, and Quinebaug Rivers flow into the city and form its harbor, from which the Thames River (Connecticut), Thames River flows south to Long Island Sound. The city is part of the Southeastern Connecticut Planning Region, Connecticut, Southeastern Connecticut Planning Region. The population was 40,125 at the 2020 United States Census. History The town of Norwich was founded in 1659, on the site of what is now the neighborhood of Norwichtown, by settlers from Saybrook Colony led by Major John Mason (c. 1600–1672), John Mason, James Fitch (minister), James Fitch, and Lieutenant Francis Griswold. They purchased the land "nine miles square" that became Norwich from Mohegan Sachem Uncas. One of the co-founders of Norwich was Thomas Leffingwell, who rescued Uncas when surrounded by his Narragansett people, Narragansett tribesmen, and whose son established the Leff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Graham Bell
Alexander Graham Bell (; born Alexander Bell; March 3, 1847 – August 2, 1922) was a Scottish-born Canadian Americans, Canadian-American inventor, scientist, and engineer who is credited with patenting the first practical telephone. He also co-founded the AT&T Corporation, American Telephone and Telegraph Company (AT&T) in 1885. Alexander Melville Bell, Bell's father, grandfather, and brother had all been associated with work on elocution and speech, and both his mother and wife were deaf, profoundly influencing Bell's life's work. His research on hearing and speech further led him to experiment with hearing devices, which eventually culminated in his being awarded the first United States patent law, U.S. patent for the telephone, on March 7, 1876. Bell considered his invention an intrusion on his real work as a scientist and refused to have a telephone in his study. Many other inventions marked Bell's later life, including ground-breaking work in Free-space optical commun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1910 Deaths
Events January * January 6 – Abé people in the French West Africa colony of Côte d'Ivoire rise against the colonial administration; the rebellion is brutally suppressed by the military. * January 8 – By the Treaty of Punakha, the Himalayan kingdom of Bhutan becomes a protectorate of the British Empire. * January 11 – Charcot Island is discovered by the Antarctic expedition led by French explorer Jean-Baptiste Charcot on the ship '' Pourquoi Pas?'' Charcot returns from his expedition on February 11. * January 12 – Great January Comet of 1910 first observed ( perihelion: January 17). * January 15 – Amidst the constitutional crisis caused by the House of Lords rejecting the People's Budget the January 1910 United Kingdom general election is held resulting in a hung parliament with neither Liberals nor Conservatives gaining a majority. * January 21 – The Great Flood of Paris begins when the Seine overflows its banks. * January 22 – Completion of cons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1837 Births
Events January–March * January 1 – The destructive Galilee earthquake causes thousands of deaths in Ottoman Syria. * January 26 – Michigan becomes the 26th state admitted to the United States. * February 4 – Seminoles attack Fort Foster in Florida. * February 25 – In Philadelphia, the Institute for Colored Youth (ICY) is founded, as the first institution for the higher education of black people in the United States. * February – Charles Dickens's '' Oliver Twist'' begins publication in serial form in London. * March 1 – The Congregation of Holy Cross is formed in Le Mans, France, by the signing of the Fundamental Act of Union, which legally joins the Auxiliary Priests of Blessed Basil Moreau, CSC, and the Brothers of St. Joseph (founded by Jacques-François Dujarié) into one religious association. April–June * April 12 – The conglomerate of Procter & Gamble has its origins, when British-born businessmen William Procter and James Gamble begi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samuel Escue Tillman
Samuel Escue Tillman (October 2, 1847 – June 24, 1942) was an astronomer, engineer, military educator, and career officer in the United States Army who spent 30 years teaching at the United States Military Academy at West Point, New York. In addition to writing for periodicals on a wide range of subjects and authoring several influential textbooks on chemistry and geology, in 1917 Tillman was recalled from previous mandatory retirement to serve as superintendent of the United States Military Academy for the duration of conflict which became known as World War I. Early life Samuel Tillman was born in Bedford County, Tennessee, near modern Shelbyville on October 2, 1847, one of several sons of Lewis Tillman and Mary C. Davidson Tillman. The younger Tillman and his brothers were raised on the family plantation in wartime Tennessee during much of the American Civil War. Tillman left the farm in 1864 to attend Miami University in Oxford, Ohio, but left after a year to accept an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erath County, Texas
Erath County () is a county located in the U.S. state of Texas. According to the United States Census bureau its population was 42,545 in 2020. The county seat is Stephenville. The county is named for George Bernard Erath, an early surveyor and a soldier at the Battle of San Jacinto. Erath County is included in the Stephenville, Texas, Micropolitan Statistical Area. Erath County is the location of two of North America's largest renewable natural gas plants. The largest is at Huckabay Ridge, near Stephenville. The second largest is located outside Dublin at Rio Leche Estates. History Native Americans Caddo tribe Anadarko villages were scattered along the Trinity and Brazos Rivers. French explorer Jean-Baptiste Bénard de la Harpe developed camaraderie among the Anadarko in 1719 when he established Fort Saint Louis de los Cadodaquious. The Anadarko became entangled with the French battles with the Spanish and later the Anglos and suffered the consequences, including disea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stephenville, Texas
Stephenville is a city in and the county seat of Erath County, Texas, United States. It sits on the North Bosque River, which rises nearby. Founded in 1854, it is home to Tarleton State University. Located in north-central Texas, Stephenville's population was 20,847 as of the 2020 census, and it is the principal city in the Stephenville Micropolitan Statistical Area. Stephenville is among several communities that call themselves the "Cowboy Capital of the World". History Stephenville is founded by and named after John M. Stephen, who settled there in 1854, and donated the land for the townsite laid out by George B. Erath when the county was organized in 1856. In the first two years of its settlement, the population increased to 776. The population then declined until 1871, because the townsite was in Comanche territory and raids were common, and because the hardships of the American Civil War led citizens to leave. The population grew after Stephenville became an agriculture ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dallas Morning News
''The Dallas Morning News'' is a daily newspaper serving the Dallas–Fort Worth area of Texas, with an average print circulation in 2022 of 65,369. It was founded on October 1, 1885, by Alfred Horatio Belo as a satellite publication of the '' Galveston Daily News'', of Galveston, Texas. Historically, and to the present day, it is the most prominent newspaper in Dallas. Throughout the 1990s and as recently as 2010, the paper has won nine Pulitzer Prizes for reporting and photography, George Polk Awards for education reporting and regional reporting, and an Overseas Press Club award for photography. Its headquarters is in downtown Dallas. History ''The Dallas Morning News'' was founded in 1885 as a spin-off of the '' Galveston Daily News'' by Alfred Horatio Belo. In 1926, the Belo family sold a majority interest in the paper to its longtime publisher, George Dealey. By the 1920s, ''The Dallas Morning News'' had grown larger than the ''Galveston Daily News'' and had beco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dolbear's Law
Dolbear's law states the relationship between the air temperature and the rate at which crickets chirp. It was formulated by physicist Amos Dolbear and published in 1897 in an article called "The Cricket as a Thermometer". Dolbear's observations on the relation between chirp rate and temperature were preceded by an 1881 report by Margarette W. Brooks, of Salem, Massachusetts, in her letter to the Editor of ''Popular Science Monthly'' Note that Brooks' letter r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cricket (insect)
Crickets are orthopteran insects which are related to Tettigoniidae, bush crickets and more distantly, to grasshoppers. In older literature, such as Augustus Daniel Imms, Imms,Imms AD, rev. Richards OW & Davies RG (1970) ''A General Textbook of Entomology'' 9th Ed. Methuen 886 pp. "crickets" were placed at the family level (''i.e.'' Gryllidae), but contemporary authorities including Dan Otte, Otte now place them in the superfamily Grylloidea. The word has been used in combination to describe more distantly related taxa in the suborder Ensifera, such as Stenopelmatoidea, king crickets and mole crickets. Crickets have mainly cylindrically shaped bodies, round heads, and long antenna (biology), antennae. Behind the head is a smooth, robust pronotum. The abdomen ends in a pair of long Cercus, cerci; females have a long, cylindrical ovipositor. Diagnostic features include legs with 3-segmented Arthropod leg#Tarsus, tarsi; as with many Orthoptera, the hind legs have enlarged femora ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Incandescent Light
An incandescent light bulb, also known as an incandescent lamp or incandescent light globe, is an electric light that produces illumination by Joule heating a #Filament, filament until it incandescence, glows. The filament is enclosed in a glass bulb that is either vacuum, evacuated or filled with inert gas to protect the filament from oxidation. Electric current is supplied to the filament by terminals or wires embedded in the glass. A bulb socket provides mechanical support and electrical connections. Incandescent bulbs are manufactured in a wide range of sizes, light output, and voltage ratings, from 1.5 volts to about 300 volts. They require no external Regulator (automatic control), regulating equipment, have low manufacturing costs, and work equally well on either alternating current or direct current. As a result, the incandescent bulb became widely used in household and commercial lighting, for portable lighting such as table lamps, car headlamps, and flashlights, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New-York Tribune
The ''New-York Tribune'' (from 1914: ''New York Tribune'') was an American newspaper founded in 1841 by editor Horace Greeley. It bore the moniker ''New-York Daily Tribune'' from 1842 to 1866 before returning to its original name. From the 1840s through the 1860s it was the dominant newspaper first of the American Whig Party, then of the Republican Party. The paper achieved a circulation of approximately 200,000 in the 1850s, making it the largest daily paper in New York City at the time. The ''Tribune''s editorials were widely read, shared, and copied in other city newspapers, helping to shape national opinion. It was one of the first papers in the North to send reporters, correspondents, and illustrators to cover the campaigns of the American Civil War. It continued as an independent daily newspaper until 1924, when it merged with the '' New York Herald''. The resulting '' New York Herald Tribune'' remained in publication until 1966. Among those who served on the paper's ed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
