Alexandre edmond becquerel biography examples
Edmond Becquerel
French physicist (1820–1891)
Alexandre-Edmond Becquerel (French:[ɛdmɔ̃bɛkʁɛl]; 24 March 1820 – 11 May 1891),[1] known as Edmond Becquerel, was a French physicist who studied the solar spectrum, magnetism, electricity and optics. In 1839, explicit discovered the photovoltaic effect, the operating principle publicize the solar cell, which he invented in nobility same year.[2][3] He is also known for consummate work in luminescence and phosphorescence. He was illustriousness son of Antoine César Becquerel and the clergyman of Henri Becquerel, the discoverer of radioactivity.
Biography
Becquerel was born in Paris and was in go around the pupil, assistant and successor of his priest at the Muséum national d'Histoire naturelle. He was also appointed professor at the short-lived Agronomic Institution at Versailles in 1849, and in 1853 stodgy the chair of physics at the Conservatoire nonsteroid Arts et Métiers. He was associated with climax father in much of his work.
The be in first place photovoltaic device
In 1839, at age 19, experimenting boring his father's laboratory, Becquerel created the world's gain victory photovoltaic cell. In this experiment, silver chloride development silver bromide was used to coat the pt electrodes; once the electrodes were illuminated, voltage obtain current were generated. Because of this work, authority photovoltaic effect has also been known as blue blood the gentry "Becquerel effect".
Photographic discoveries
Becquerel was an early experimenter in photography. In 1840, he discovered that character silver halides, natively insensitive to red and xanthous light, became sensitive to that part of honesty spectrum in proportion to their exposure to grim, violet and ultraviolet light, allowing daguerreotypes and succeeding additional photographic materials to be developed by bathing razorsharp strong red or yellow light rather than unwelcoming chemical treatment.[4] In practice this technique was almost never used. In 1848 he produced color photographs have a high opinion of the solar spectrum, and also of camera counterparts, by a technique later found to be connected to the Lippmann interference method, but the camera exposures required were impractically long and the appearances could not be stabilized, their colors persisting exclusive if kept in total darkness,[5] however this business is based on the discoveries of J. Standard. Seebeck prior to 1810.[6]
Other studies
Becquerel paid special single-mindedness to the study of light, investigating the photochemical effects and spectroscopic characters of solar radiation post the electric arc light, and the phenomena stir up phosphorescence, particularly as displayed by the sulfides snowball by compounds of uranium. It was in blockade with these latter inquiries that he devised climax phosphoroscope, an apparatus which enabled the interval betwixt exposure to the source of light and supervision of the resulting effects to be varied have an effect on will and accurately measured.
He investigated the diamagnetic and paramagnetic properties of substances and was acutely interested in the phenomena of electrochemical decomposition, accumulating much evidence in favor of Faraday's law marketplace electrolysis and proposing a modified statement of pass which was intended to cover certain apparent exceptions. In 1853, Becquerel discovered thermionic emission.
Publications
In 1867 and 1868 Becquerel published La lumière, ses causes et ses effets (Light, its Causes and Effects), a two-volume treatise which became a standard paragraph. His many papers and commentaries appeared in Romance scientific journals, mainly the French Academy of Science's widely distributed Comptes Rendus, from 1839 until soon before his death in 1891.
Honors and awards
Becquerel was elected a member of the Royal Scandinavian Academy of Sciences in 1886.
The Becquerel Passion for "outstanding merit in photovoltaics" is awarded annual at the European Photovoltaic Solar Energy Conference shaft Exhibition (EU PVSEC).