Science!
Mar 16, 2017
HISTORICAL NOTE #1: Before Marie invented the word "radioactivity," the rays discovered by Henri Becquerel to be emitting from uranium were simply called "Becquerel rays."
HISTORICAL NOTE #2: Marie's initial observation WAS that the pitchblende ore was much more radioactive than the uranium that had been removed from the ore.
HISTORICAL NOTE #3: When Marie did eventually discover a new element, she named it after her native country of Poland: polonium.
HISTORICAL NOTE #4: The process that Marie repeated countless times, after having boiled down the ore (exposing herself to poisonous gasses), is called fractional crystallization, a process she invented.
HISTORICAL NOTE #5: The device partially depicted in panel 1, which Marie used to measure radioactivity, is a piezoelectric meter, which produces an electric charge by using weights to apply stress to a crystal. It causes a string to vibrate, twist a mirror and shine a light on the ruler thingy.
HISTORICAL NOTE #6: The piezoelectric meter, along with the discovery that stressed crystals produce electricity, was the work of Pierre Curie with his brother Jacques. The principle of piezoelectricity has many practical applications which have wide use today, notably in quartz watches, but also in the basic functioning of your computer's microprocessor.
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