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By Megan Stine

Born in Warsaw, Poland, on November 7, 1867, Marie Curie was once forbidden to wait the male-only college of Warsaw, so she enrolled on the Sorbonne in Paris to check physics and arithmetic. There she met a professor named Pierre Curie, and the 2 quickly married, forming essentially the most recognized clinical partnerships in background. jointly they found parts and received a Nobel Prize in 1903. (Later Marie received one other Nobel award for chemistry in 1911.) She died in Savoy, France, on July four, 1934, a sufferer of decades of publicity to poisonous radiation.

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She made up our minds to check a rock known as pitchblende. Pitchblende is a rock that includes a lot of uranium. however it has different metals in it, too. whilst Marie validated the pitchblende, she discovered it gave off much more rays than uranium by myself! How might that be? Marie found out the reply. There needed to be whatever else—another metal—mixed into the pitchblende! That different steel, no matter what it was once, had much more power than uranium. quickly Marie learned the reality. She had stumbled on a brand new aspect that the realm didn’t find out about! Marie named the recent steel after her place of birth of Poland. She referred to as it polonium. Then she got here up with a observe for the rays that the metals gave off. She known as it “radioactivity. ” It intended that metals like polonium and uranium have been capable of free up strength into the air. * * * what's a component? each natural CHEMICAL on the earth is named a component. METALS equivalent to COPPER, GOLD, AND URANIUM ARE ALL parts. SO ARE GASES reminiscent of HELIUM—THE fuel inside of HELIUM BALLOONS. THE AIR WE BREATHE isn't really a component since it ISN’T A unmarried, natural CHEMICAL. AIR IS a mix of OXYGEN AND different components. SCIENTISTS HAVE A CHART THAT TELLS THEM WHAT the entire components on this planet ARE. thus far, we all know OF 118 components, yet SCIENTISTS nonetheless may perhaps realize extra. * * * To enable the realm learn about her new discoveries, Marie did what scientists continuously do: She wrote a file. She desired to learn it to a gaggle of different scientists within the Academy of Sciences in Paris. The Academy was once like a posh technological know-how membership for an important scientists in France. It used to be tough to affix and contributors needed to be voted in. Marie and Pierre weren't contributors of the Academy. at the moment, Pierre couldn’t even get a task educating on the Sorbonne! different scientists idea Marie and Pierre weren’t more than enough simply because they didn’t have PhDs from the simplest faculties. along with, Marie was once a girl. The Academy by no means allow girls in. ladies weren’t even allowed contained in the Academy’s rooms! fortunately, notwithstanding, Marie and Pierre had vital neighbors. the entire recognized scientists in Europe and the US knew each other. In April 1898, Marie’s document approximately her discoveries was once learn to the Academy via her instructor and buddy Gabriel Lippmann. The scientists have been attracted to Marie’s record, yet not anyone was once amazed—not but. They weren’t yes she was once correct. Marie nonetheless needed to end up that polonium existed. How? by means of setting apart it out of the pitchblende. * * * what's RADIOACTIVITY? RADIOACTIVITY IS a distinct form of strength THAT COMES FROM contained in the ATOMS IN definite METALS OR chemical substances. while anything IS RADIOACTIVE, IT offers OFF strength RAYS until eventually THE strength IS ALL long gone. HOW lengthy DOES IT TAKE FOR A RADIOACTIVE steel TO LOSE ALL ITS strength? the reply DIFFERS for every steel. a few METALS LOSE power QUICKLY—IN just a couple of mins, HOURS, OR DAYS. different METALS, LIKE RADIUM, CAN TAKE a long time TO LOSE THEIR strength. SCIENTISTS USE THE time period “HALF-LIFE” to explain HOW lengthy IT TAKES FOR a component TO LOSE 1/2 ITS power. RADIUM HAS A HALF-LIFE OF approximately 1,600 YEARS.

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