What happened 1872 AD

During the first half of the 20th century, many scientific computing needs were met by increasingly sophisticated analog computers, which used a direct mechanical or electrical model of the problem as a basis for computing. However, these were not programmable and generally lacked the versatility and accuracy of modern digital computers. The first modern analog computer was a tide-predicting machine, invented by Sir William Thomson in 1872.

In 1872, Russian Alexander Lodygin invented an incandescent light bulb and obtained a Russian patent in 1874. He used as a burner two carbon rods of the diminished section in a glass receiver, hermetically sealed, and filled with nitrogen, electrically arranged so that the current could be passed to the second carbon when the first had been consumed. Later he lived in the US, changed his name to Alexander de Lodyguine and applied and obtained patents for incandescent lamps having chromium, iridium, rhodium, ruthenium, osmium, molybdenum and tungsten filaments, and a bulb using a molybdenum filament was demonstrated at the world fair of 1900 in Paris.

Bobby is said to have sat by the grave for 14 years. He died in 1872 and a necropsy by Prof Thomas Walley of the Edinburgh Veterinary College concluded he had died from cancer of the jaw.

Bobby was buried just inside the gate of Greyfriars Kirkyard, not far from John Gray's grave.

The first official Canadian Thanksgiving occurred on April 15, 1872, when the nation was celebrating the Prince of Wales' recovery from a serious illness.

In 1872 Julia Ward Howe called for women to join in support of disarmament and asked for 2 June 1872, to be established as a "Mother's Day for Peace".

In 1872, Douglass became the first African American nominated for Vice President of the United States, as Victoria Woodhull's running mate on the Equal Rights Party ticket. He was nominated without his knowledge. Douglass neither campaigned for the ticket nor acknowledged that he had been nominated.

In 1872, Meyer was the first to suggest that the six carbon atoms in the benzene ring (that had been proposed a few years earlier by August Kekulé) were interconnected by single bonds only, the fourth valence of each carbon atom being directed toward the interior of the ring.

In 1872, Kossel attended the University of Strassburg to study medicine. He studied under Felix Hoppe-Seyler, who was head of the department of biochemistry, the only such institution in Germany at the time. He attended lectures by Anton de Bary, Waldeyer, August Kundt, and Baeyer.

Labor Day has been celebrated in Canada on the first Monday in September since the 1880s. The origins of Labor Day in Canada can be traced back to December 1872 when a parade was staged in support of the Toronto Typographical Union's strike for a 58-hour work-week, almost a full decade before a similar event in New York City by the American Knights of Labor, a late 19th-century U.S. labor federation, launched the movement towards the American Labor Day holiday. The Toronto Trades Assembly (TTA) called its 27 unions to demonstrate in support of the Typographical Union who had been on strike since 25 March. George Brown, Canadian politician and editor of the Toronto Globe hit back at his striking employees, pressing police to charge the Typographical Union with "conspiracy."[7] Although the laws criminalising union activity were outdated and had already been abolished in Great Britain, they were still on the books in Canada and police arrested 24 leaders of the Typographical Union. Labor leaders decided to call another similar demonstration on 3 September to protest the arrests. Seven unions marched in Ottawa, prompting a promise by Canadian Prime Minister Sir John A. Macdonald to repeal the "barbarous" anti-union laws. Parliament passed the Trade Union Act on 14 June the following year, and soon all unions were seeking a 54-hour work-week.

Douglass was presidential elector at large for the State of New York, and took that state's votes to Washington, D.C..

Naram-Sin (1872–1828 BC) repelled an attempted usurpation of his throne by the future king Shamshi-Adad I late in his reign, however, his successor Erishum II was deposed by Shamshi-Adad I in 1809 BC, bringing an end to the dynasty founded either by Ushpia or Puzur-Ashur I.