It does not store any personal data.It is with an especial satisfaction that I perform the pleasant duty which has been assigned to me today. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. Should you see an error, please notify us.Įditor’s note: This article was originally posted on Decemand edited on December 21, 2018. EDN strives to be historically accurate with these postings. 1st periodic table is presented, March 6, 1869įor more moments in tech history, see this blog.Understanding electromagnetic fields and antenna radiation takes (almost) no math.Wilhelm Conrad Röntgen discovers the X-ray, November 8, 1895.The becquerel is now the SI derived unit of radioactivity. In 1903, Marie and Pierre Curie shared the Nobel Prize in Physics with Becquerel for “the extraordinary services they have rendered by their joint researches on the radiation phenomena.” The common historical unit for radioactivity is the curie, in honor of the pair. The pair’s laboratory notes are still radioactive and have to be stored in lead boxes, and Marie’s coffin was lined with lead. Marie died in 1934 from aplastic anemia, likely caused by her exposure to radiation. Use of radium in everyday life, including its use in luminous paint to create watches that would glow in the dark, led to the discovery of radiation poisoning. The detrimental effects of radiation were not immediately known, and the research took its toll on the Curies’ health. As early as 1899, it was reported that a malignant tumor of the skin was cured by radioactive source application. The discovery of radium allowed for radiotherapy and nuclear medicine, which changed the treatment of cancer and other diseases. Marie Curie received the Nobel Prize in Chemistry 1911 for the discovery of the elements radium and polonium. They measured radium’s intensity at around 3,000 times uranium. Later that year, on December 21, 1898, the Curies found radioactive compounds similar to barium compounds that became a new element they named radium because of the way it emitted energy in rays. In this paper, the pair also used the term radioactivity for the first time. In documenting their work they wrote, “We thus believe that the substance that we have extracted from pitchblende contains a metal never known before, akin to bismuth in its analytic properties.” The substance was about 300 times more strongly active than uranium. They first discovered polonium, named for Marie’s homeland Poland, in July 1898.
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