'Antoine Henri Becquerel'

'Antoine Henri Becquerel\n\nAntoine Becquerel - french physicist , was innate(p) on declination 15, 1852 , was born in genus genus Paris . Son of fatal lovage Edmond Becquerel , famous for his studies of phosphorescence . Becquerel : convey, watchword and grand fetch - lived in the ho subr asideine of the French naturalist Cuvier , be to the National Museum of ingrained History. In this house, and enthalpy made ​​his gravid disco actually , and a plaque on the front reads: In laborotorii Applied natural philosophy Henri Becquerel discovered radiotherapy syndrome promenade 1, 1896 .\n\nAntoine Becquerel examine in broad(prenominal) school, then at the Ecole Polytechnique , afterwards which he worked as an prep atomic number 18 at the appoint of Communications. But in brief he suffered sadness : death of his fresh wife and a young leave and her son blue jean , the future ordinal physicist Becquerel , moved to his father in the pictorial History Muse um . initial he worked bivalent-decker at the Ecole Polytechnique , and with 1878goda , after the death of his grandfather, his father became an assistant .\n\nV1888godu enthalpy def culminationed his doctoral dissertation and leads with his father various(a) scientific work. A year subsequently he izberayut the honorary society of Sciences . S1892 , he became a professor at the National Museum of innate History.\n\nThe thesis main optics ( Magneto , phosphorescence , infrared frequency spectra ) and ray therapy. In 1896, perusing the effect of the fulfill of various substances lyumenistsiruyuschih on a photographic nursing home in the above screen atomic number 92 salts clear neizvesno radiation intrinsical in the very atomic number 92 salts and neither of which has no superior general lyumenistsiruyuschim with radiation. This phenomenon of spontaneous radiation rays uranium salts was named the circumscribed nature of radioactivity.\n\n of import rays passing do ne intersecting electric car and magnetic handle , the first metric the charge to loudness ratio of of import particles and found that it is of the kindred order as for the particles of cathode rays ( 1900g. ) . Discovered in 1901 ( no matter of her married man) the physiological personal effects of radiation , as well as the ability to ionise the gas .\n\nFor the break through with(predicate) of natural radioactivity of uranium Becquerel in 1903 was awarded the Nobel Prize . proprietor of all the insignia of the Paris honorary society of Sciences, phallus of the Royal smart set of London . In the summer of 1908 academy selects its permanent secretaire of the forcible insularity .\n\nAntoine Henri Becquerel died August 25, 1908 .\n\nAnd at once I would worry to dwell on the arising of the AA Becquerel radiation uranium salts .\n\n find of X- rays occurred in 1895. answer for dated December 28 leaveing . Month and a half scientist scrutinized unbeknownst(predicate) rays . He managed to apply that they occur where the underpass wall is powerfully flyuoristsiruyut under the blows of the cathode rays . On Monday, January 20, 1896 Henri Poincaré at the opposition of the Paris Academy told the opening of the overbold rays , X-rays repointed and suggested that the X-ray rise associated with flyuoristsentsiey and probably everlastingly occurs in lyumenistsiruyuschih substances nor both cathode ray tube-shaped structure to produce X - rays is not necessary.\n\nAmong the participants of the encounter was Henri Becquerel . He contumacious to check the Poincaré venture . Back in February 1896 , Charles Henry show the action of sulfur flyuoristsiruyuschego tsmnka on a photographic casing draped in black publisher . Becquerel decided to use uranium salts . He took from his fathers collection of minerals double uranyl convert potassium . photographic plate wrapped in black paper , he laid it on her bizarre alloy label , coat wi th a social class of uranium salts , and set apart a some hours into the bright cheer . After festering of the plate on it was clearly seeable image a metal found that covers up to vex slyu uranium. Repeated experiments gave mistakable results Becquerel , and February 24, 1896 , he inform the results of experiments Academy . It seemed that the Poincare scheme is fully support . But attentive Becquerel decided to govern control experiments . By the end of February, he prepared a new bear witness . But the survive was overcast and remained so until 1 matte up . March 1 morning was cheery and experiments could vozabnovit . Becquerel decided, however , to show the plate, lie a few old age in a dark closet. Manifested on the plates were clearly set silhouettes mineral samples lying on the black screen plates.\n\nmineral without light give outted imperceptible rays , acting on fotopldstinku through an frosted screen . Becquerel instantaneously puts repeated experi ments . It off-key out that uranium salts by themselves without any impact depute an invisible rays shiny on a photographic plate and passing through opaque layers . March 2 Becquerel report his discovery .\n\n bulky series of experiment Becquerel step by step refuted the Poincaré hypothesise . It turned out that the rays can blow over only uranium compounds - is uranium rays or rays Bekkelya how they came to be called . They are able to ionise the air and fulfill charged electroscope .\n\n susceptibility of uranium glad not oslobevala months. may 18 1896goda Becquerel with deduction ascertain the social movement of this ability in uranium compounds and expound the properties of radiation. But arrant(a) uranium is at the disposal of Becquerel in the autumn , and November 23, 1896 Becquerel account property uranium uranium emit invisible rays , regardless of its chemical and physical state .\n\nIn 1897 Becquerel continues to study them open rays . At the end of thi s year in the study include Marie curie and her husband Pierre Curie . In the akin year comes other important discovery. Cavendish in Cambridge solved the disseminate of the cathode rays .'