On January 2, 1906, Carrier was granted U.S. Patent 808,897 for an Apparatus for Treating Air, the world's first spray-type air conditioning equipment. It was designed to humidify or dehumidify air, heating water for the first function and cooling it for the second.
In 1905, Stravinsky was engaged to his cousin Katherine Gavrylivna Nosenko (called "Katya"), whom he had known since early childhood. In spite of the Orthodox Church's opposition to marriage between first cousins, the couple married on 23 January 1906.
On 19 April 1906, Pierre Curie was killed in a road accident. Walking across the Rue Dauphine in heavy rain, he was struck by a horse-drawn vehicle and fell under its wheels, causing his skull to fracture. Curie was devastated by her husband's death.
The Russian Constitution of 1906, Created 6 May [O.S. 23 April] 1906, also known as the Fundamental Laws, set up a multiparty system and a limited constitutional monarchy. The revolutionaries were quelled and satisfied with the reforms, but it was not enough to prevent the 1917 revolution that would later topple the Tsar's regime.
On 13 May 1906 the physics department of the University of Paris decided to retain the chair that had been created for her late husband and to offer it to Marie. She accepted it, hoping to create a world-class laboratory as a tribute to her husband Pierre. She was the first woman to become a professor at the University of Paris.
The Wright brothers wrote their 1903 patent application themselves, but it was rejected. In January 1904 they hired Ohio patent attorney Henry Toulmin, and on May 22, 1906, they were granted U.S. Patent 821393 for "new and useful Improvements in Flying Machines".
On 12 August [O.S. 30 July] 1906, Russian artillerymen and military engineers rose in revolt in the fortress of Sveaborg (later called Suomenlinna), Helsinki. The Finnish Red Guards supported the Sveaborg Rebellion with a general strike, but the mutiny was quelled within 60 hours by loyal troops and ships of the Baltic Fleet.
In 1906, the Transvaal government promulgated a new Act compelling registration of the colony's Indian and Chinese populations. At a mass protest meeting held in Johannesburg on 11 September that year, Gandhi urged Indians to defy the new law and to suffer the punishments for doing so.
In September, riots broke out in Atlanta, precipitated by unfounded allegations of black men assaulting white women. This was a catalyst for racial tensions based on a job shortage and employers playing black workers against white workers. Ten thousand whites rampaged through Atlanta, beating every black person they could find, resulting in over 25 deaths.
However, Dorgan's earliest usage of hot dog was not in reference to a baseball game at the Polo Grounds, but to a bicycle race at Madison Square Garden, in The New York Evening Journal December 12, 1906, by which time the term hot dog in reference to sausage was already in use. In addition, no copy of the apocryphal cartoon has ever been found.