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Henri Becquerel (Contributor of The Astronomy Book)
He later showed that the rays released by uranium also caused gases to ionize and were able to be influenced by electric or magnetic fields. He was educated at the Lycée Louis-le-Grand, from which he went to the École Polytecdhnique 1872—1874 and then to the École des Ponts et Chaussées 1874—1877 , where he received his engineering training and from which he entered the Administration of Bridges and Highways with the rank of ingénieur. Becquerel headed to Polytechnic in 1872, where he began his formal scientific training and also received engineering training at the Bridges and Highways school beginning in 1874. In 1908, he became a foreign member of the Royal Society. His father was an accomplished Professor of Applied Physics who researched solar radiation. With little time left before his next conference, Becquerel went ahead and developed the photographic plates.
Henri Becquerel and the Discovery of Radioactivity
He also placed objects such as coins or cut out metal shapes between the crystals and the photographic plate, and found that he could produce outlines of those shapes on the photographic plates. By 26 March 1900, Becquerel had duplicated those experiments for the radium radiation and had shown that it too consisted of negatively charged ions, moving at 1. Over the years, he studied plane-polarization of light, terrestrial magnetism, infrared radiation, and the relationship between the absorption of light and emission of phosphorescence emitting light after exposure to radiation in uranium, and was an accomplished and very respected physicist. Thanks to the following group for allowing us to reprint this information: 1313 Dolley Madison Blvd. With his doctorate achieved, Becquerel became substantially inactive in research. He successfully graduated with his Doctorate in Applied Physics in 1888. He was highly influenced and motivated by the huge wave of excitement, that established in the scientific community, after Wilhelm Conrad Röntgen discovered X-rays in the 1890s.
Lesson Summary Henri Becquerel was a famed French physicist credited with the early discovery of radioactivity. To a solution of uranium chloride, he added barium chloride and precipitated the barium as the sulfate. He became the intermediary through whom their papers reached the Academy, and they lent him radium preparations from time to time. Arthur Holly Compton, who shared the Nobel Prize in physics in 1927 for his discovery of the eff… Marie Curie , Curie, Marie Maria Sklodowska Curie, Marie Maria Sklodowska physics. Of course, he was eager to repeat this experiment, but there was one minor problem: Mother Nature prevented him from doing so. To his surprise, he saw that the uranium crystal left a very large image on the plate! Following exposure, he placed it on a photographic plate. Henri Becquerel, alongside scientists Pierre and Marie Currie, received the Nobel Prize in Physics for his role in the discovery of radioactivity.
Henri Becquerel and the Discovery of Radioactivity
Retrieved 13 April 2018. However, that week in February, the sky above Paris was cloudy, and Becquerel stopped his experiment early, leaving his samples in a drawer as he waited for a sunny day. Early Work Becquerel dedicated his early works in physics to the plane polarization of light, with the phenomenon of phosphorescence and absorption of light by crystals, which was also the subject of his doctoral thesis. He had a supply of uranium salt, which was known to phosphoresce when exposed to sunlight. In 1872, Becquerel began attending the École Polytechnique and in 1874 the École des Ponts et Chaussées Bridges and Highways School , where he studied civil engineering. They received the Nobel Prize along with Becquerel for their discoveries.
In 1890 he married his second wife, the daughter of E. Several days later, when the weather had improved, Henri went back to his laboratory to take his sample of uranium and photographic plate from the drawer. Becquerel did not have time before his next conference on March 2 and decided to develop the photographic plates anyway, even though his samples had received little sunlight. He had conducted research on solar radiation. On 24 February 1896 he reported to the Academy that fluorescent crystals of potassium uranyl sulfate had exposed a photographic plate wrapped in black paper while they both lay for several hours in direct sunlight.
To his surprise, the images were clear and strong. During these years, he also obtained his doctoral degree from Polytechnic in applied physics in 1888. His first marriage was to Lucie Zoé Marie Jamin in 1874. Before the end of his schooling he had begun both his private research 1875 and his teaching career 1876 as répétiteur at the Polytechnique. In 1895, he transitioned to a professorship appointment at Polytechnic.
Le Croisic, Brittany, France, 25 August 1908 physics. In the same year Alfred Potier withdrew from active teaching because of illness, and Becquerel took over his lectures in physics at the école Polytechnique. That's right, it's a unit measure of radioactivity. Toward the end of 1899 his first report is dated 11 December , he began to investigate the effects on the radiation from radium of magnetic fields in various orientations to the direction of its propagation in modern terms, the magnetic deflection of the beta rays from shortterm decay products in equilibrium with the radium. When he developed the plates, he saw an outline of the crystals. Retrieved 28 May 2012. Becquerel did more than study radioactivity.
The salts were exposed to sunlight and they left an image on the plate. One places on the sheet of paper, on the outside, a slab of the phosphorescent substance, and one exposes the whole to the sun for several hours. His father was a physicist and a professor of applied physics. To his surprise, an image appeared on the plates, despite the lack of exposure to sunlight. He kept some of his crystals in darkness, hoping that their pent-up energy might dissipate itself and make them ready for reexcitation. Retrieved 15 July 2019. Of more importance, he had shown that the power of emitting penetrating rays was a particular property of uranium.
One hypothesis which presents itself to the mind naturally enough would be to suppose that these rays, whose effects have a great similarity to the effects produced by the rays studied by M. On 2 March he reported comparable exposures when both crystals and plate lay in total darkness. He had discovered radioactivity, though he called it Becquerel radiation. Thus the beginning of 1896 found Becquerel, at the age of forty-three, established in rank and responsibility, his years of active research behind him and everything for which he is now remembered still undone. On page 50 of volume 2, Edmond noted that Niepce de Saint-Victor had observed that some objects that had been exposed to sunlight could expose photographic plates even in the dark. He is remembered for his discovery of Related Article Summaries. The explanations he attempted were thoroughly confusing, but the facts remained.
In 1903, Henri Becquerel and the Curries jointly received the Nobel Prize in Physics for their contributions to science and the discovery of radioactivity. Further investigation, on the 26th and 27 of February, was delayed because the skies over Paris were overcast and the uranium-covered plates Becquerel intended to expose to the sun were returned to a drawer. Retrieved 6 March 2018. . To his big surprise, the image was now amazingly clear. On the first of March, he developed the photographic plates expecting only faint images to appear. This meant that the uranium emitted radiation without an external source of energy such as the sun.