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Rys emitted by radioactive substances.
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What scientists were involved in the discovery of radioactivity?
Henri Becquerel first discovered radioactivity (by mistake).
What is the activity of uranium in 1 gram of uranyl nitrate?
Approx. 12 Bq (Bq is the symbol of becquerel, unit of activity).
What did Henry Becquerel invent?
Henri Becquerel accidently discovered radioactivity while conducting experiments on phosphorescence. He saw that photographic plates that were still wrapped in their black paper packaging was exposed when placed near uranium salts. Therefore, this suggested a type of radiation that can pass through solid matter. He went on the share a Nobel prize with the Curies.
What is absorbed by the earth changing the rays to heat?
ultraviolet rays are absorbed by the earth changing the rays to heat
Is cathrone rays steams of electron?
yes, cathode rays are streams of electrons
What did Henri becquerel discover?
Henri Becquerel discovered in 1896 the natural radioactivity.
Who is Becqueral?
Becquerel discovered x-rays and radioactivity in 1896.
What are the works of Antoine Henri Becquerel?
He discovered rays, invisible to the eye but NOT xray or cathodrays (have been discovered prior) but radioactive rays.
What was the first thing that Marie curie discover?
The first thing Marie Curie discovered was Becquerel's rays but called it radioactivity after her home land.
Did Henri Becquerel and the Curies find out that the atoms werent indivisible?
The work of Henri Becquerel discovered uranium rays. Marie Curie used them in her work and helped to discover evidence that atoms may not have been the simplest blocks of matter and could in fact be divided.
Contribution of Henri becquerel?
Henri Becquerel discovers the radioactivity.
What was discovered by Henri becquerel?
Henri Becquerel discovered radioactivity
When did Jean Becquerel die?
Jean Becquerel died in 1953.
When was Jean Becquerel born?
Jean Becquerel was born in 1878.
What has the author Karl Papius written?
Karl Papius has written: 'Das Radium und die radioaktiven Stoffe' -- subject(s): Radium, Radioactivity, Becquerel rays
How did Antoine Becquerel improve the atomic theory?
=Becquerel's earliest work was concerned with the plane polarization of light, with the phenomenon of phosphorescence and with the absorption of light by crystals (his doctorate thesis). He also worked on the subject of terrestrial magnetism. In 1896, his previous work was overshadowed by his discovery of the phenomenon of natural radioactivity. Following a discussion with Henri Poincaré on the radiation which had recently been discovered by Röntgen (X-rays) and which was accompanied by a type of phosphorescence in the vacuum tube, Becquerel decided to investigate whether there was any connection between X-rays and naturally occurring phosphorescence. He had inherited from his father a supply of uranium salts, which phosphoresce on exposure to light. When the salts were placed near to a photographic plate covered with opaque paper, the plate was discovered to be fogged. The phenomenon was found to be common to all the uranium salts studied and was concluded to be a property of the uranium atom. Later, Becquerel showed that the rays emitted by uranium, which for a long time were named after their discoverer, caused gases to ionize and that they differed from X-rays in that they could be deflected by electric or magnetic fields. For his discovery of spontaneous radioactivity Becquerel was awarded half of the Nobel Prize for Physics in 1903, the other half being given to Pierre and Marie Curie for their study of the Becquerel radiation
How do minerals containing uranium darken photographic film?
Emitting alpha particles and gamma rays. These rays affect the photographic emulsion. The natural radioactivity of uranium was discovered by Henri Becquerel in 1896.
