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Actinium is a chemical element; it has symbol Ac and atomic number 89. It was first isolated by Friedrich Oskar Giesel in 1902, who gave it the name emanium; the element got its name by being wrongly identified with a substance André-Louis Debierne found in 1899 and called actinium.
André-Louis Debierne (French pronunciation: [ɑ̃dʁe lwi dəbjɛʁn]; 14 July 1874 – 31 August 1949) was a French chemist.He is often considered the discoverer of the element actinium, though H. W. Kirby disputed this in 1971 and gave credit instead to German chemist Friedrich Oskar Giesel.
Actinium is likely to be one of two elements that will next recieve a picture. Actinium can be made in reasonable amounts, and has a decent half-life of 21 years. There is only one picture of anything actinium related so far, and it's an image of it's oxide. However, if it's oxide can be photographed, there's no reason why the metal can't.
Friedrich Oskar Giesel (20 May 1852 – 13 November 1927, known as Fritz) was a German organic chemist.During his work in a quinine factory in the late 1890s, he started to work on the at-that-time-new field of radiochemistry and started the production of radium.
Image credits: therock #5 Drew Barrymore's Body Image Struggles After Giving Birth. Taking to her Instagram page in 2020, the 49-year-old actress shared before and after photos of herself ...
Actinium-225 is a member of the radioactive neptunium series; [60] it was first discovered in 1947 as a decay product of uranium-233 and it is an α-emitter with a half-life of 10 days. Actinium-225 is less available than actinium-228, but is more promising in radiotracer applications. [30]
Scientists say comet C/2023 A3 Tsuchinshan-ATLAS is visible once every 80,000 years, and people across North America were treated to stunning views.
The discovery is reshaping views on California geology with the possibility of extinct islands. For decades, students at San Pedro High walked over millions of ancient fossils hidden beneath the ...