Home > A. E. Becquerel

Becquerel was born in Paris, and was in turn the pupil, assistant and successor of his father at the Musee d'Histoire Naturelle. He was also appointed professor at the short-lived Agronomic Institute at Versailles in 1849, and in 1853Events January 19 Giuseppe Verdi's opera Il Trovatore premieres in Rome January 21 Russell L. Hawes patents the envelope folding machine January 29 Napoleon III marries the Spanish Countess Eugenie at the Tuileries March 4 Inauguration of US president Fra received the cliais of physics at the Conservatoire des Arts et Metiers. Edmond Becquerel was associated with his father in much of his work, but he himself paid special attention to the study of light, investigating the photochemical effects and spectroscopic characters of solar radiationSolar radiation is radiant energy emitted by the sun, particularly electromagnetic energy. About half of the radiation is in the visible short-wave part of the electromagnetic spectrum. The other half is mostly in the near- infrared part, with some in the and the electric light, and the phenomena of phosphorescence, particularly as displayed by the sulphides and by compounds of uraniumUranium is a chemical element in the periodic table that has the symbol U and atomic number 92. A heavy, silvery-white, toxic, metallic , and naturally- radioactive element, uranium belongs to the actinide series and its isotope uranium-235 is used as the. It was in connection with these latter inquiries that he devised his phosphoroscope, an apparatus which enabled the interval between exposure to the source of light and observation of the resulting effects to be varied at will and accurately measured.

Becquerel published in 1867Events January 8 African-American men granted the right to vote in the District of Columbia January 11 Benito Juarez becomes Mexican president again January 30 Emperor Komei of Japan dies. Crown Prince Mutsuhito is expected to become the next Emperor of J- 68Events January 3 Meiji Emperor declares " Meiji Restoration", his own restoration to full power, against the supporters of the Tokugawa Shogunate. January 10 Shogun Tokugawa Yoshinobu declares emperor's declaration "illegal" and attacks Kyoto. Pro-Emperor a treatise in two volumes on La Lumière, ses causes et ses effets. He also investigated the diamagnetic and paramagnetic properties of substances; and was keenly interested in the phenomena of electrochemical decomposition, accumulating much evidence in favor of Faraday's law of electrolysisFaraday's law for electrolysis invented by Michael Faraday 1834: The mass of a substance produced at an electrode during electrolysis is proportional to the number of moles of electrons transferred at that electrode The number of Faradays required to disc and proposing a modified statement of it which was intended to cover certain apparent exceptions.

Initial text from a 1911 Encyclopaedia. Please update as needed.