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  1. In 1933, Karl Guthe Jansky accidentally picked up a radio transmission from the black hole at the center of our galaxy, starting the field of radio astronomy. #Poetry #Science #History #Astronomy #Radioastronomy #Jansky (sharpgiving.com/thebookofscien)

  2. In 1933, Walther Meissner and Robert Ochsenfeld discovered that a superconductor repels a magnetic field when it is cooled below its transition point. #Poetry #Science #History #Electromagnetism #Superconductor #Meissner #Ochsenfeld (sharpgiving.com/thebookofscien)

  3. In 1931, Harold Urey found the first heavy isotope of hydrogen, deuterium, using distillation from liquid hydrogen. #Poetry #Science #History #Chemistry #Deuterium #Urey (sharpgiving.com/thebookofscien)

  4. In 1928, Frederick Griffith showed that nonvirulent bacteria can incorporate DNA from virulent bacteria to change their behavior. #Poetry #Science #History #Genetics #DNA #Griffith (sharpgiving.com/thebookofscien)

  5. In 1928, Alexander Fleming discovered that the penicillium mold that ruined his experiment had killed staphylococci in his petri dish. #Poetry #Science #History #Pharmacology #Penicillin #Fleming (sharpgiving.com/thebookofscien)