1770
| 1770 • Joseph Priestley, British chemist, recommends the use of a rubber to remove pencil marks. |
about
Age: 30y
1800
Age: 30y
|
birth of childMary McDonald Ireland ⇓ 1 Source ⇓ |
| 1800 • Alessandro Volta describes his new invention, the voltaic pile, the first chemical battery, in a letter to the Royal Society of London. |