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Dmitri Ivanovich Mendeleev (/ ˌ m ɛ n d əl ˈ eɪ ə f / MEN-dəl-AY-əf; [2] [b] [a] 8 February [O.S. 27 January] 1834 – 2 February [O.S. 20 January] 1907) was a Russian chemist known for formulating the periodic law and creating a version of the periodic table of elements.
Since the first award in 1901, conferment of the Nobel Prize has engendered criticism [1] and controversy. [2] After his death in 1896, the will of Swedish industrialist Alfred Nobel established that an annual prize be awarded for service to humanity in the fields of physics, chemistry, physiology or medicine, literature, and peace.
To give provisional names to his predicted elements, Dmitri Mendeleev used the prefixes eka- / ˈ iː k ə-/, [note 1] dvi- or dwi-, and tri-, from the Sanskrit names of digits 1, 2, and 3, [3] depending upon whether the predicted element was one, two, or three places down from the known element of the same group in his table.
"I killed the President because he was the enemy of the good people—the good working people. I am not sorry for my crime. [10] [11] I am sorry I could not see my father." [11] — Leon Czolgosz, assassin of U.S. President William McKinley (29 October 1901), prior to execution by electrocution "I've been looking forward to this." [12]: 58
Joseph Priestley and Antoine Lavoisier discover a new gas called oxygen, discrediting the basic theory of chemistry at the time, creating the basis for the modern science of chemistry, and prompting chemists all over the world to look for more new elements; Humphry Davy introduces audiences to nitrous oxide ("laughing gas") and uses electricity to search for new chemical elements.
A woman in the pickup also was killed, and her fiance was hospitalized. The crash was reported about 3:30 a.m. Oct. 27 on westbound Northwest Loop 820 just past Marine Creek Parkway.
The following is a list of people who are considered a "father" or "mother" (or "founding father" or "founding mother") of a scientific field.Such people are generally regarded to have made the first significant contributions to and/or delineation of that field; they may also be seen as "a" rather than "the" father or mother of the field.
Kaylin Gillis, a 20-year-old woman looking for a friend's house in upstate New York, was fatally shot by a homeowner after the car she was riding in went to the wrong address, authorities say.