February 22nd
1879 Johannes N. Brönsted, who offered the acid-base theory (Brönsted-Lowry), was a researcher in kinetics, properties of ions, catalysis and nitramide, was born.
1902 Fritz Strassman, who with Otto Hahn and Lise Mietner, discovered neutroninduced nuclear fission in uranium (1938) and codeveloped the rubidium-strontium technique of radio-dating geological samples, was born.
1828 Frederich Wöhler in a letter to Jöns J. Berzelius, announced the synthesis of urea from ammonium cyanate, asking whether this is a true synthesis of organic from inorganic material.