Becquerel Sentence Examples

His Son, Alexandre Edmond Becquerel (1820-1891), was born in Paris on the 24th of March 1820, and was in turn his pupil, assistant and successor at the Musee d'Histoire Naturelle; he was also appointed professor at the short-lived Agronomic Institute at Versailles in 1849, and in 1853 received the chair of physics at the Conservatoire des Arts et Métiers.

The Becquerel rays have a marked chemical action on certain substances.

Antoine Cesar Becquerel (1788-1878), was born at Chatillon sur Loing on the 8th of March 1788.

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 radiation and the electric light, and the phenomena of phosphorescence, particularly as displayed by the sulphides and by compounds of uranium.

In 1903 they were awarded the Davy medal of the Royal Society in recognition of this work, and in the same year the Nobel prize for physics was divided between them and Henri Becquerel.

Becquerel's observation in 1896 that certain uranium preparations emitted a radiation resembling the X rays observed by Rntgen in 1895.

Like the X rays, the Becquerel rays are invisible; they both traverse thin sheets of glass or metal, and cannot be refracted; moreover, they both ionize gases, i.e.

C. Becquerel, that plants possess no proper temperature, but are wholly dependent on that of the surrounding medium.

The infra-red requires special appliances; it has been examined visually by the help of phosphorescent plates (Becquerel), and with special photographic plates (Abney); but the most efficient way is to use the bolometer or radiomicrometer; by this means some 500 or 600 lines have been mapped.

Becquerel that the intensity of the effect depended on the thermoelectric power of the junction and was independent of its form or dimensions.

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Becquerel's observation in 1896 that certain uranium preparations emitted a radiation resembling the X rays observed by Röntgen in 1895.

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Antoine Henri Becquerel (1852-1908), son of the lastnamed, who succeeded to his chair at the Musee d'Histoire Naturelle in 1892, was born in Paris on the 15th of December 1852, studied at the Ecole Polytechnique, where he was appointed a professor in 1895, and in 1875 entered the department des posts et chaussees, of which in 1894 he became chef.

Becquerel, however, investigated the character of the dispersion by using prism-shaped flames strongly coloured with sodium.

After the discovery of the radioactive properties of uranium by Henri Becquerel in 1896, it was noticed that some minerals of uranium, such as pitchblende, were more active than the element itself, and this circumstance suggested that such minerals contained small quantities of some unknown substance or substances possessing radioactive properties in a very high degree.