Radioactive! is one of those books that makes you wish you had listened better during high school chemistry and physics. But even if your high school days were a long time ago like mine were, Winifred Conkling has written the history of how artificial radioactivity was discovered in such an engaging and reader-friendly way, that the science is accessible. Better yet, it made an unscientific person like myself want to understand concepts like nuclear fission and transuranic elements. And that says a lot!
Radioactive! is the story of how two largely unknown women- Irene Curie and Lise Meitner--worked independently on this important discovery. I selected this book from Recorded Books because Lillie, the African American protagonist in Half-Truths, wants to become a scientist. Irene's and Lise's stories helped me gain insight into Lillie's motivation and her thoughts about science.
Irene CurieConkling includes the backstory for both scientists. Irene, the daughter of famous Marie Curie who developed the theory of radioactivity, seems to have been born to be a scientist. She was educated along with other French children of notable academics, studied science at the Sorbonne, and her doctorate dissertation was on the alpha rays of polonium, the element her parents discovered (along with radium) that was named after Marie's country of origin, Poland.
|Irene and Marie|
working together in 1925
In 1934 the Joliot-Curies finally made the discovery that sealed their place in scientific history. Building on the work of Marie and Pierre Curie, who had isolated naturally-occurring radioactive elements, the Joliot-Curies realized the alchemist’s dream of turning one element into another: creating radioactive nitrogen from boron, radioactive isotopes of phosphorus from aluminum, and silicon from magnesium. .....
Irène’s group pioneered research into radium nuclei that led a separate group of German physicists, led by Otto Hahn, Lise Meitner, and Fritz Strassman, to discover nuclear fission: the splitting of the nucleus itself, emitting vast amounts of energy. https://en.wikipedia.org/wiki/Irène_Joliot-Curie.
Lise MeitnerAs a child growing up in Austria, Lise Meitner kept a notebook under her pillow of things she was enthralled with such as the colors of oil slicks and reflected light. As a grown woman, she was not allowed to attend a public institution of higher learning so she studied physics privately. Since she enjoyed both mathematics and physics, she attended lectures on both subjects and was the second woman in Austria to receive a doctorate degree in physics. Born of Jewish parents, she converted to Christianity as an adult.
These excerpts from Wikipedia, summarize Meitner's scientific career:
In 1912 the research group Hahn–Meitner moved to the newly founded Kaiser-Wilhelm-Institute (KWI) in Berlin-Dahlem, south west in Berlin. She worked without salary as a "guest" in Hahn's department of Radiochemistry. It was not until 1913, at 35 years old and following an offer to go to Prague as associate professor, that she got a permanent position at KWI.
In 1917, she and Hahn discovered the first long-lived isotope of the element protactinium, for which she was awarded the Leibniz Medal by the Berlin Academy of Sciences. That year, Meitner was given her own physics section at the Kaiser Wilhelm Institute for Chemistry......
In 1926, Meitner became the first woman in Germany to assume a post of full professor in physics, at the University of Berlin. In 1935, as head of the physics department of the Kaiser Wilhelm Institute for Chemistry in Berlin-Dahlem (today "Hahn-Meitner-Building of the Free University) she and Otto Hahn, the director of the KWI, undertook the so called "transuranium research" program. This program eventually led to the unexpected discovery of the nuclear fission of heavy nuclei in December 1938, half a year after she had left Berlin. She was praised by Albert Einstein as the "German Marie Curie".World War II divided countries and scientists. Even though protected for a time by her Austrian citizenship, when the Nazis found out she had Jewish parents, she was forced to flee Germany. Exiled in the Netherlands and then in Sweden, Meitner continued her research--although without her precious laboratory equipment.
World War III admit that the science behind their discoveries is incredible. But what interested me was how the war changed everything for Meitner and Curie. Suddenly, the research they had done to harness the huge power within the atom, was taken out of their hands and used to create the atomic bomb. Both woman wanted nucleaer energy to be used in peaceful ways. Neither anticipated an application for warfare and both felt guilty after hearing of the destruction in Hiroshima.
|Nuclear fission experimental setup, reconstructed at the Deutsches Museum, Munich|
I am giving away my copy of this audio CD in conjunction with the fall issue of Talking Story on Radiation: Friend or Foe. Leave me a comment by September 23 for one chance to win this excellent book that would be useful in a middle or high school classroom. Share this on social media or leave another comment through Talking Story and you'll be entered twice. Just make sure that you tell me what you have done and PLEASE leave your email address if you are new to this blog.