who 1st discovered naturally occurring radioactivity ?

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https://www.thoughtco.com › henri-becquerel-radioactivity-4570960

https://www.thoughtco.com › henri-becquerel-radioactivity-4570960
Henri Becquerel and the Discovery of Radioactivity – ThoughtCo
Antoine Henri Becquerel (born December 15, 1852 in Paris, France), known as Henri Becquerel, was a French physicist who discovered radioactivity, a process in which an atomic nucleus emits particles because it is unstable. He won the 1903 Nobel Prize in Physics with Pierre and Marie Curie, the latter of whom was Becquerel’s graduate student. The SI unit for radioactivity called the becquerel (or Bq), which measures the amount of ionizing radiation that is released when an atom experiences …

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Marie Curie and the Discovery of Radioactivity – Stanford University
Marie and Pierre discovered not only polonium, but also radium, through their work with pitchblende. In 1903, Marie Curie and her husband won the Nobel Prize in physics for their work on radioactivity. She was the first woman ever to receive a Nobel Prize. Just three years after winning the Nobel Prize, Pierre was killed in an accident. Despite being a single mother of two and a widow, Marie Curie continued her research as well as teaching, as she took over Pierre’s teaching position at …

https://edu.rsc.org › feature › radioactivity-discovered › 2020216.article

https://edu.rsc.org › feature › radioactivity-discovered › 2020216.article
Radioactivity discovered | Feature | RSC Education
As Thomson’s first research student, Rutherford continued his work on magnetism but, after Becquerel’s discovery, soon became interested in radioactivity. In 1897-8 Rutherford studied the radioactivity of uranium and thorium using an apparatus comprising zinc plates (A and B) 4 cm apart and charged to 50 V (see Fig 1). He placed aluminium foils of differing thicknesses above the uranium sample on A and measured the ‘rate of leak’ (current flowing through the ionised air) using a …

https://nuclear-energy.net › what-is-nuclear-energy › history › discovery-of-radioactivity

https://nuclear-energy.net › what-is-nuclear-energy › history › discovery-of-radioactivity
Discovery of Radioactivity. How and When Was It? – Nuclear energy
Discovery of Radioactivity. In 1896, the French physicist Antoine Henri Becquerel discovers that certain substances produced penetrating radiation of unknown origin. This fact was named as we know it today: radioactivity. Two years before, in 1895, the German physicist Wilhelm Conrad Röntgen discovered X-rays.

https://www.mirion.com › learning-center › radiation-safety-basics › the-history-of-radiation

https://www.mirion.com › learning-center › radiation-safety-basics › the-history-of-radiation
The History of Radiation – Mirion
Although it was Henri Becquerel that discovered the phenomenon, it was his doctoral student, Marie Curie, who named it: radioactivity. She would go on to do much more pioneering work with radioactive materials, including the discovery of additional radioactive elements: thorium, polonium, and radium. She was awarded the Nobel Prize twice, once alongside Henri Becquerel and her husband Pierre in Physics for their work with radioactivity, and again years later in Chemistry for her …

https://www.ans.org › news › article-879 › henri-becquerels-discovery-of-radioactivity

https://www.ans.org › news › article-879 › henri-becquerels-discovery-of-radioactivity
Henri Becquerel and the Discovery of Radioactivity
December 15, 1852, was the birthday of French physicist Antoine Henri Becquerel, who discovered a completely unknown property of matter in March 1896. Becquerel Some might say Becquerel’s discovery of radioactivity was a lucky accident-but as the Roman philosopher Seneca wrote in the 1st century, Luck is what happens when preparation meets opportunity.

https://www.sciencedirect.com › science › article › pii › S1631070517300786

https://www.sciencedirect.com › science › article › pii › S1631070517300786
The discovery of radioactivity – ScienceDirect
The radioactivity of uranium was discovered in 1896 by Henri Becquerel who, starting from a wrong idea, progressively realized what he was observing, regularly informing the French Academy of Sciences of the progress he was doing. In the next years, it was found that thorium was radioactive too, and two new radioactive elements, polonium and radium, were discovered by Pierre and Marie Curie, while a third one, actinium, was identified by André Debierne. The study of the penetrating power …

https://www2.lbl.gov › nsd › education › ABC › wallchart › chapters › 03 › 4.html

https://www2.lbl.gov › nsd › education › ABC › wallchart › chapters › 03 › 4.html
The Discovery of Radioactivity – Lawrence Berkeley National Laboratory
The Discovery of Radioactivity In 1896 Henri Becquerel was using naturally fluorescent minerals to study the properties of x-rays , which had been discovered in 1895 by Wilhelm Roentgen. He exposed potassium uranyl sulfate to sunlight and then placed it on photographic plates wrapped in black paper, believing that the uranium absorbed the sun’s energy and then emitted it as x-rays.

https://www.quora.com › Who-discovered-first-radioactivity?share=1

https://www.quora.com › Who-discovered-first-radioactivity?share=1
Who discovered first radioactivity? – Quora
The phenomenon of radioactivity was discovered by Henri Becquerel in 1896. He found that a jataphotographic plate wrapped in a black paper was affected by certain penetrating radiations emitted by uranium salt. Rutherford showed later that the radiations from the salt were capable of ionising a gas. The current produced due to the ions was taken as a measure of activity of the compound. A few years later Madame Marie Curie and her husband Piers Curie discovered the highly radioactive …

https://en.wikipedia.org › wiki › Naturally_occurring_radioactive_material

https://en.wikipedia.org › wiki › Naturally_occurring_radioactive_material
Naturally occurring radioactive material – Wikipedia
Naturally occurring radioactive materials (NORM) and technologically enhanced naturally occurring radioactive materials (TENORM) consist of materials, usually industrial wastes or by-products enriched with radioactive elements found in the environment, such as uranium, thorium and potassium and any of their decay products, such as radium and radon.

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