What happened 1902 AD

By 1902 they realized that wing-warping created "differential drag" at the wingtips. Greater lift at one end of the wing also increased drag, which slowed that end of the wing, making the glider swivel—or "yaw"—so the nose pointed away from the turn. That was how the tailless 1901 glider behaved.

The Curries undertook the arduous task of separating out radium salt by differential crystallization. From a ton of pitchblende, one-tenth of a gram of radium chloride was separated in 1902.

Between 1898 and 1902, the Curials published, jointly or separately, a total of 32 scientific papers, including one that stated that, when exposed to radium, diseased, tumor-forming cells were destroyed faster than healthy cells.

In 1902 she visited Poland on the occasion of her father's death.

In the summer of 1902, Stravinsky stayed with composer Nikolai Rimsky-Korsakov and his family in the German city of Heidelberg, where Rimsky-Korsakov, arguably the leading Russian composer at that time, suggested to Stravinsky that he should not enter the Saint Petersburg Conservatoire but instead study composing by taking private lessons, in large part because of his age.

"In the provinces of Kharkov and Poltava in 1902, thousands of them, ignoring restraints and authority, burst out in a rebellious fury that led to extensive destruction of property and looting of noble homes before troops could be brought to subdue and punish them".

In January 1902, Boer leader Manie Maritz was implicated in the Leliefontein massacre in the far Northern Cape.

In 1902, during a congress of the Young Turks held in Paris, the heads of the liberal wing, Sabahaddin and Ahmed Riza Bey, partially persuaded the nationalists to include in their objectives ensuring some rights for all the minorities of the empire.

The two-year expedition was conceived and led by Ludvig Mylius-Erichsen, who had previously led the 'Literary Expedition' to Northwest Greenland together with Knud Rasmussen in 1902–1904.

Worker strikes in Caucasus broke out in March 1902 and strikes on the railway originating from pay disputes took on other issues and drew in other industries, culminating in a general strike at Rostov-on-Don in November.

The Boer victories in the west led to stronger action by the British. In the second half of March 1902, large British reinforcements were sent to the Western Transvaal under the direction of Ian Hamilton.

On the morning of 7 March 1902, the Boers attacked the rear guard of Methuen's moving column at Tweebosch. Confusion reigned in British ranks and Methuen was wounded and captured by the Boers.

Plague infection is first reported in Mexico.

The opportunity the British were waiting for arose on 11 April 1902 at Rooiwal, where a commando led by General Jan Kemp and Commandant Potgieter attacked a superior force under Kekewich. The British soldiers were well positioned on the hillside and inflicted severe casualties on the Boers charging on horseback over a large distance, beating them back. This was the end of the war in the Western Transvaal and also the last major battle of the war.

Some burghers joined the British in their fight against the Boers. By the end of hostilities in May 1902, there were no fewer than 5,464 burghers working for the British.

On 6 May 1902 at Holkrantz in the southeastern Transvaal, a Zulu faction had their cattle stolen and their people mistreated by the Boers as a punishment for helping the British. The local Boer officer then sent an insulting message to the tribe, challenging them to take back their cattle. The Zulus attacked at night, and in a mutual bloodbath, the Boers lost 56 killed and 3 wounded, while the Africans suffered 52 killed and 48 wounded.

Mount Pelée (Montagne Pelée, meaning "bald mountain" or "peeled mountain") is a volcano at the northern end of Martinique, an island and French overseas department in the Lesser Antilles island arc of the Caribbean. Its volcanic cone is composed of stratified layers of hardened ash and solidified lava. The stratovolcano's eruption in 1902 destroyed the town of Saint-Pierre, killing 28,000 people in the space of a few minutes, in the worst volcanic disaster of the 20th century.

31 May 1902, with 54 of the 60 delegates from the Transvaal and Orange Free State voting to accept the terms of the peace treaty.

The last of the Boers surrendered in May 1902 and the war ended with the Treaty of Vereeniging signed on 31 May 1902.

In June 1902, Tesla moved his lab operations from Houston Street to Wardenclyffe.

By the twentieth century, football had gained ground all around the world and national football associations were being founded. The first official international match outside the British Isles was played between Uruguay and Argentina in Montevideo in July 1902.

In Buffalo, New York, on July 17, 1902, in response to an air quality problem experienced at the Sackett-Wilhelms Lithographing & Publishing Company of Brooklyn, Willis Carrier submitted drawings for what became recognized as the world's first modern air conditioning system.

Henry Ford Company became the Cadillac Motor Company on August 22, 1902, after Ford left with the rights to his name.

The Yacolt Burn is the collective name for dozens of fires in Washington state and Oregon occurring between September 8 and September 12, 1902, causing 38 deaths in the Lewis River area, at least nine deaths by fire in Wind River and 18 deaths in the Columbia River Gorge.

In 1902 he founded the Saxon Manufacturers' Association, and was its representative until 1911.

In 1902, Willem became a member of the Royal Netherlands Academy of Arts and Sciences.

From September 19 to October 24 they made between 700 and 1,000 glides, the longest lasting 26 seconds and covering 622.5 feet (189.7 m). Hundreds of well-controlled glides after they made the rudder steerable convinced them they were ready to build a powered flying machine.

Ruhollah Musavi Khomeini, whose first name means "spirit of Allah", was born on 24 September 1902 in Khomeyn, Markazi Province.

With their new method the Wrights achieved true control in turns for the first time on October 8, 1902, a major milestone.

The first eruption of Santa María in recorded history occurred in October 1902. The eruption began on 24 October, and the largest explosions occurred over the following two days, ejecting an estimated 8 cubic kilometres (1.9 cu mi) of magma. Estimates are that 6,000 people died as a result of the eruption.

In 1902, Mussolini emigrated to Switzerland, partly to avoid compulsory military service. He worked briefly as a stonemason in Geneva, Fribourg, and Bern, but was unable to find a permanent job.