 1765 - Joseph-Nicéphore Niépce born: earliest photochemical imaging/photography. |
| 1788 - Antoine-César Becquerel born: first to use electrolysis of metals from ores; grandfather of Henri Becquerel. |
| 1792 - John F. W. Herschel born: invented photography on sensitized paper; introduced terms "positive" and "negative" to photography (as well as "photography" itself); astronomer and son of astronomer William Herschel. |
| 1827 - John H. Gladstone born: refractive index of gases and its relationship to density. |
| 1839 - Ludwig Mond born: discovered Mond producer gas and nickel carbonyl; cofounder of the company which later became Imperial Chemical Industries (ICI). |
| 1857 - Arthur Hantzsch born: organic acids; electrical conductivity of organic compounds; stereochemistry of nitrogen compounds. |
sources: http://webserver.lemoyne.edu/faculty/giunta/week.html, http://todayinsci.com
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