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- 1742 - Carl Wilhelm Scheele, who discovered elements including oxygen, barium, chlorine, and manganese, was born on this day.
- 1868 - Fritz Haber, who received the Nobel Prize in Chemistry in 1918 for his development of synthetic ammonia, was born on this day.
- 1921 - Thomas Midgley, Jr. an American chemist, discovered that tetra-ethyl lead (TEL) when added to gasoline stopped engine knock.
- 1952 - The London Great Smog ended on this day.
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