[DOC] [TLE] Benchmarks: Henri Becquerel discovers radioactivity on February ... [PAR] Feb 28, 2011 ... A photographic plate made by Henri Becquerel shows the effects of ... Becquerel 
was interested in the phenomenon of fluorescence, in which some materials glow 
when ... He wrapped his fluorescing crystals  a uranium compound called ... 
This discovery of spontaneous radioactivity (a term coined by... [DOC] [TLE] The Discovery of Radioactivity [PAR] 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. ... 
it on photographic plates wrapped in black paper, believing that the uranium ... 
For some reason, Becquerel decided to develop his photographic plates anyway. [DOC] [TLE] Henri Becquerel and the Discovery of Radioactivity | ANS Nuclear ... [PAR] Dec 13, 2011 ... Some might say Becquerel's discovery of radioactivity was a lucky ... Rntgen 
astonished the world by circulating photographs of the bones in his ... and so he 
placed the plates and minerals inside of a dark desk drawer. ... Becquerel also 
quickly found that the effect did not diminish with timethe uranium... [DOC] [TLE] Discovery of Radioactivity - Boundless [PAR] Becquerel accidentally found that a uranium-rich mineral emitted invisible, 
penetrating rays that could darken a photographic plate. ... He eventually 
concluded that some rays must be coming out of the uranium ... Which of the 
following chemists is recognized for his or her discovery of the radioactivity of 
uranium in 1986? [DOC] [TLE] Henri Becquerel facts, information, pictures | Encyclopedia.com ... [PAR] Antoine-Henri Becquerel's landmark research on x rays and his discovery of ... 
Becquerel discovered that the uranium he was studying gave off radiation similar 
to x rays. ... His later research on radioactive materials found that at least some of 
the ... To test this hypothesis Becquerel wrapped photographic plates in thick... [DOC] [TLE] Discovery of Radioactivity - Vigyan Prasar [PAR] Antoine-Henri Becquerel (1852-1908) is known for his discovery of ... some 
phosphorescent rock on photographic paper to see if it would darken it in the .... 
By 1896 Becquerel would probably have had at his disposal dry photographic 
plates of .... his experiments proved uranium rays to posses a certain physical 
property,... [DOC] [TLE] The Basics of Radioactivity - Matt Sahagun - PH204, Fall 2009 ... [PAR] Dec 13, 2009 ... 1: By accidentally exposing his photographic plate to uranium, Becquerel 
discovered the ... physicist Henri Becquerel made an incredible discovery purely 
by accident. ... (the property of some materials to later reemit some of the light 
they ... contained uranium, in the plates and placed them in a dark drawer. [DOC] [TLE] Marie Curie - Research Breakthroughs (1897-1904) [PAR] In recognition of his discovery, Roentgen in 1901 became the first Nobel laureate 
in physics. ... Henri Becquerel, discoverer of uranium radiation. ... even if they 
were kept in the dark, emitted rays that would fog a photographic plate. ... 
hypothesis: the emission of rays by uranium compounds could be an atomic 
property of the... [DOC] [TLE] Henri Becquerel [PAR] On the first of March, he developed the photographic plates expecting only ... For 
his discovery of radioactivity, Becquerel was awarded the 1903 Nobel ... In 
particular, he had studied the phosphorescent properties of some uranium 
compounds. ... had been in the dark because he had no reason, based on his 
hypothesis,... [DOC] [TLE] Henri Becquerel - Radioactivity: A New Property of Matter - Harper's ... [PAR] French physicist who discovered radioactivity in fluorescent salts of uranium, ... 
Now Becquerel did not discover his rays and their radio-activity out of nothing. ... 
In this instance was Niewenglowski, who made the interesting discovery that 
some ... Niewenglowski placed a photographic plate in a plate-holder, and, 
instead of... [DOC] [TLE] The Discovery of Uranic Rays: - Nucleonica [PAR] In March 1896, Antoine Henri Becquerel discovered radioactivity. .... renowned 
for the discovery of magnetic properties of gases and for his work on the rotation 
.... Some compounds exposed to light exhibit in the dark the same effect as that 
produced ... Was the amount of uranium sufficient to

Question: Henri Becquerel discovered this property when some uranium darkened his photographic plate
Answer: Radioactivity