[DOC] [TLE] Henri Becquerel discovers radioactivity on February 26, 1896 [PAR] Feb 28, 2011 ... A metal Maltese cross, placed between the plate and radioactive uranium salt, ... 
Physicist Wilhelm Rntgen had recently discovered X-rays; ... But nature didn't 
cooperate; Becquerel didn't get his sunny day. Still eager to show something to 
the Acadmie, he took the plates and the crystals out of his drawer. [DOC] [TLE] Discovery of Radioactivity - Vigyan Prasar [PAR] During the meeting of January 20, 1896, he felt that the X-rays appeared to 
emanate from the ... Uranium had been discovered in 1789 by a German 
analytical chemist, Martin ... The plates rested in a dark drawer until Sunday, 1 
March, when Becquerel ... The existence of radioactivity _ metal that somehow 
shot out energy! [DOC] [TLE] The Discovery of Radioactivity [PAR] In 1896 Henri Becquerel was using naturally fluorescent minerals to study the 
properties of x-rays, ... It took four more years of processing tons of ore to isolate 
enough of each element to determine their chemical properties. ... distances 
through materials before interactingseveral centimeters of lead or a meter of 
concrete is... [DOC] [TLE] Early Study of Radioactivity: Marie Curie - Le Moyne [PAR] Before discovering elements, though, Curie carried out the work reported in this 
.... Eugne Demaray had discovered the rare earth metal europium in 1896. ... to 
the rare earth metals, so it would not be surprising to find some uranium or... [DOC] [TLE] History of Nuclear Energy - World Nuclear Association [PAR] Uranium was discovered in 1789 by Martin Klaproth, a German chemist, and 
named after the ... Then in 1896 Pierre and Marie Curie gave the name '
radioactivity' to this ... and their paper was published only two days before war 
broke out in 1939. .... The test of the first US atomic bomb in July 1945 had little 
impact on the... [DOC] [TLE] Marie and Pierre Curie and the Discovery of Polonium and Radium [PAR] Dec 1, 1996 ... So it was not until she was 24 that Marie came to Paris to study mathematics and 
physics. ... After two years, when she took her degree in physics in 1893, she .... 
amounts, determine their atomic weight and preferably isolate them. .... Fifty years 
afterwards the presence of radioactivity was discovered on the... [DOC] [TLE] Uranium's scientific history 1789 - 1939 [PAR] Human settlements advanced slowly along small rivers, until the discovery of 
silver in one of the rivers triggered the first precious metal rush in history. ... The 
first complete analysis of pitchblende was carried out in 1789 by a talented ... 
Sciences in Paris on 24 January 1896 and showed it to his colleague Henri 
Becquerel. [DOC] [TLE] Uranium - Wikipedia [PAR] Uranium is a chemical element with symbol U and atomic number 92. It is a 
silvery-white metal in the actinide series of the periodic table. A uranium atom 
has 92 protons and 92 electrons, of which 6 are valence electrons. Uranium is 
weakly radioactive because all its isotopes are unstable (with ... The 1789 
discovery of uranium in the mineral pitchblende is credited to... [DOC] [TLE] Uranium Quick Facts [PAR] Uranium was discovered in 1789 by Martin Klaproth, a German chemist, who ... It 
took until 1938 to discover that uranium could be split to release energy, that is 
fission. ... Henri Antoine Becquerel discovered that uranium was radioactive in 
1896. ... A chunk of uranium metal the size of a gallon milk jug weighs over 150 
lbs! [DOC] [TLE] cassies element project by cassidy henry on Prezi [PAR] Oct 5, 2012 ... it took until 1938 to discover that uranium could be split to release ... Henri 
Antoine Becquerel discovered that uranium was radioactive in 1896. [DOC] [TLE] The 1950s uranium boom | South Bay History - Daily Breeze [PAR] Apr 12, 2014 ... When word got out of uranium discoveries in California, in the Kern River Canyon 
... He reported finding surface uranium ore in the Tehachapi Mountains with a ... (
Photo: The Terrifying Age of Radioactive Toys for Kids website) ... Uranium 
Boom, with Dennis Morgan and William Talman ( before he played

Question: This metal was discovered in 1789; it took until 1896 to find out that it was radioactive
Answer: uranium